/* Bim - A Text Editor * * Copyright (C) 2012-2021 K. Lange * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "bim.h" #include <kuroko/kuroko.h> #include <kuroko/vm.h> #include <kuroko/debug.h> #include <kuroko/util.h> #include <kuroko/scanner.h>global_config_t global_config = { /* State */ .term_width = 0, .term_height = 0, .bottom_size = 2, .yanks = NULL, .yank_count = 0, .yank_is_full_lines = 0, .tty_in = STDIN_FILENO, .bimrc_path = "~/.bim3rc", .syntax_fallback = NULL, /* Syntax to fall back to if no other match applies */ .search = NULL, .overlay_mode = OVERLAY_MODE_NONE, .command_buffer = NULL, .command_offset = 0, .command_col_no = 0, .history_point = -1, /* Bitset starts here */ .highlight_on_open = 1, .initial_file_is_read_only = 0, .go_to_line = 1, .break_from_selection = 1, /* Terminal capabilities */ .can_scroll = 1, .can_hideshow = 1, .can_altscreen = 1, .can_mouse = 1, .can_unicode = 1, .can_bright = 1, .can_title = 1, .can_bce = 1, .can_24bit = 1, /* can use 24-bit color */ .can_256color = 1, /* can use 265 colors */ .can_italic = 1, /* can use italics (without inverting) */ .can_insert = 0, /* ^[[L */ .can_bracketedpaste = 0, /* puts escapes before and after pasted stuff */ .can_sgrmouse = 0, /* Whether SGR mouse mode is availabe (large coordinates) */ /* Configuration options */ .history_enabled = 1, .highlight_parens = 1, /* highlight parens/braces when cursor moves */ .smart_case = 1, /* smart case-sensitivity while searching */ .highlight_current_line = 1, .shift_scrolling = 1, /* shift rather than moving cursor*/ .check_git = 0, .color_gutter = 1, /* shows modified lines */ .relative_lines = 0, .numbers = 1, .horizontal_shift_scrolling = 0, /* Whether to shift the whole screen when scrolling horizontally */ .hide_statusbar = 0, .tabs_visible = 1, .autohide_tabs = 0, .smart_complete = 0, .has_terminal = 0, .search_wraps = 1, .had_error = 0, .use_biminfo = 1, /* Integer config values */ .cursor_padding = 4, .split_percent = 50, .scroll_amount = 5, .tab_offset = 0, .background_task = NULL, .tail_task = NULL, }; struct key_name_map KeyNames[] = { {KEY_TIMEOUT, "[timeout]"}, {KEY_BACKSPACE, "<backspace>"}, {KEY_ENTER, "<enter>"}, {KEY_ESCAPE, "<escape>"}, {KEY_TAB, "<tab>"}, {' ', "<space>"}, /* These are mostly here for markdown output. */ {'`', "<backtick>"}, {'|', "<pipe>"}, {KEY_DELETE, "<del>"}, {KEY_MOUSE, "<mouse>"}, {KEY_MOUSE_SGR, "<mouse-sgr>"}, {KEY_F1, "<f1>"},{KEY_F2, "<f2>"},{KEY_F3, "<f3>"},{KEY_F4, "<f4>"}, {KEY_F5, "<f5>"},{KEY_F6, "<f6>"},{KEY_F7, "<f7>"},{KEY_F8, "<f8>"}, {KEY_F9, "<f9>"},{KEY_F10, "<f10>"},{KEY_F11, "<f11>"},{KEY_F12, "<f12>"}, {KEY_HOME,"<home>"},{KEY_END,"<end>"},{KEY_PAGE_UP,"<page-up>"},{KEY_PAGE_DOWN,"<page-down>"}, {KEY_UP, "<up>"},{KEY_DOWN, "<down>"},{KEY_RIGHT, "<right>"},{KEY_LEFT, "<left>"}, {KEY_SHIFT_UP, "<shift-up>"},{KEY_SHIFT_DOWN, "<shift-down>"},{KEY_SHIFT_RIGHT, "<shift-right>"},{KEY_SHIFT_LEFT, "<shift-left>"}, {KEY_CTRL_UP, "<ctrl-up>"},{KEY_CTRL_DOWN, "<ctrl-down>"},{KEY_CTRL_RIGHT, "<ctrl-right>"},{KEY_CTRL_LEFT, "<ctrl-left>"}, {KEY_ALT_UP, "<alt-up>"},{KEY_ALT_DOWN, "<alt-down>"},{KEY_ALT_RIGHT, "<alt-right>"},{KEY_ALT_LEFT, "<alt-left>"}, {KEY_ALT_SHIFT_UP, "<alt-shift-up>"},{KEY_ALT_SHIFT_DOWN, "<alt-shift-down>"},{KEY_ALT_SHIFT_RIGHT, "<alt-shift-right>"},{KEY_ALT_SHIFT_LEFT, "<alt-shift-left>"}, {KEY_SHIFT_TAB,"<shift-tab>"}, {KEY_PASTE_BEGIN,"<paste-begin>"},{KEY_PASTE_END,"<paste-end>"}, }; char * name_from_key(enum Key keycode) { for (unsigned int i = 0; i < sizeof(KeyNames)/sizeof(KeyNames[0]); ++i) { if (KeyNames[i].keycode == keycode) return KeyNames[i].name; } static char keyNameTmp[8] = {0}; if (keycode <= KEY_CTRL_UNDERSCORE) { keyNameTmp[0] = '^'; keyNameTmp[1] = '@' + keycode; keyNameTmp[2] = 0; return keyNameTmp; } to_eight(keycode, keyNameTmp); return keyNameTmp; } #define S(c) (krk_copyString(c,sizeof(c)-1)) static KrkClass * syntaxStateClass = NULL; struct SyntaxState { KrkInstance inst; struct syntax_state state; }; static void schedule_complete_recalc(void); /** * Theming data * * This default set is pretty simple "default foreground on default background" * except for search and selections which are black-on-white specifically. * * The theme colors get set by separate configurable theme scripts. */ const char * COLOR_FG = "@9"; const char * COLOR_BG = "@9"; const char * COLOR_ALT_FG = "@9"; const char * COLOR_ALT_BG = "@9"; const char * COLOR_NUMBER_FG = "@9"; const char * COLOR_NUMBER_BG = "@9"; const char * COLOR_STATUS_FG = "@9"; const char * COLOR_STATUS_BG = "@9"; const char * COLOR_STATUS_ALT= "@9"; const char * COLOR_TABBAR_BG = "@9"; const char * COLOR_TAB_BG = "@9"; const char * COLOR_ERROR_FG = "@9"; const char * COLOR_ERROR_BG = "@9"; const char * COLOR_SEARCH_FG = "@0"; const char * COLOR_SEARCH_BG = "@17"; const char * COLOR_KEYWORD = "@9"; const char * COLOR_STRING = "@9"; const char * COLOR_COMMENT = "@9"; const char * COLOR_TYPE = "@9"; const char * COLOR_PRAGMA = "@9"; const char * COLOR_NUMERAL = "@9"; const char * COLOR_SELECTFG = "@0"; const char * COLOR_SELECTBG = "@17"; const char * COLOR_RED = "@1"; const char * COLOR_GREEN = "@2"; const char * COLOR_BOLD = "@9"; const char * COLOR_LINK = "@9"; const char * COLOR_ESCAPE = "@9"; const char * current_theme = "none"; struct ColorName color_names[] = { {"text-fg", &COLOR_FG}, {"text-bg", &COLOR_BG}, {"alternate-fg", &COLOR_ALT_FG}, {"alternate-bg", &COLOR_ALT_BG}, {"number-fg", &COLOR_NUMBER_FG}, {"number-bg", &COLOR_NUMBER_BG}, {"status-fg", &COLOR_STATUS_FG}, {"status-bg", &COLOR_STATUS_BG}, {"status-alt", &COLOR_STATUS_ALT}, {"tabbar-bg", &COLOR_TABBAR_BG}, {"tab-bg", &COLOR_TAB_BG}, {"error-fg", &COLOR_ERROR_FG}, {"error-bg", &COLOR_ERROR_BG}, {"search-fg", &COLOR_SEARCH_FG}, {"search-bg", &COLOR_SEARCH_BG}, {"keyword", &COLOR_KEYWORD}, {"string", &COLOR_STRING}, {"comment", &COLOR_COMMENT}, {"type", &COLOR_TYPE}, {"pragma", &COLOR_PRAGMA}, {"numeral", &COLOR_NUMERAL}, {"select-fg", &COLOR_SELECTFG}, {"select-bg", &COLOR_SELECTBG}, {"red", &COLOR_RED}, {"green", &COLOR_GREEN}, {"bold", &COLOR_BOLD}, {"link", &COLOR_LINK}, {"escape", &COLOR_ESCAPE}, {NULL,NULL}, }; #define FLEXIBLE_ARRAY(name, add_name, type, zero) \ int flex_ ## name ## _count = 0; \ int flex_ ## name ## _space = 0; \ type * name = NULL; \ void add_name (type input) { \ if (flex_ ## name ## _space == 0) { \ flex_ ## name ## _space = 4; \ name = calloc(sizeof(type), flex_ ## name ## _space); \ } else if (flex_ ## name ## _count + 1 == flex_ ## name ## _space) { \ flex_ ## name ## _space *= 2; \ name = realloc(name, sizeof(type) * flex_ ## name ## _space); \ for (int i = flex_ ## name ## _count; i < flex_ ## name ## _space; ++i) name[i] = zero; \ } \ name[flex_ ## name ## _count] = input; \ flex_ ## name ## _count ++; \ } FLEXIBLE_ARRAY(mappable_actions, add_action, struct action_def, ((struct action_def){NULL,NULL,0,NULL})) FLEXIBLE_ARRAY(regular_commands, add_command, struct command_def, ((struct command_def){NULL,NULL,NULL})) FLEXIBLE_ARRAY(prefix_commands, add_prefix_command, struct command_def, ((struct command_def){NULL,NULL,NULL})) FLEXIBLE_ARRAY(themes, add_colorscheme, struct theme_def, ((struct theme_def){NULL,NULL})) /** * Special implementation of getch with a timeout */ int _bim_unget = -1; void bim_unget(int c) { _bim_unget = c; } void redraw_statusbar(void); int bim_getch_timeout(int timeout) { fflush(stdout); if (_bim_unget != -1) { int out = _bim_unget; _bim_unget = -1; return out; } struct pollfd fds[1]; fds[0].fd = global_config.tty_in; fds[0].events = POLLIN; int ret = poll(fds,1,timeout); if (ret > 0 && fds[0].revents & POLLIN) { unsigned char buf[1]; read(global_config.tty_in, buf, 1); return buf[0]; } else { background_task_t * task = global_config.background_task; if (task) { global_config.background_task = task->next; task->func(task); free(task); if (!global_config.background_task) { global_config.tail_task = NULL; redraw_statusbar(); } } return -1; } } /** * UTF-8 parser state */ static uint32_t codepoint_r; static uint32_t state = 0; #define UTF8_ACCEPT 0 #define UTF8_REJECT 1 static inline uint32_t decode(uint32_t* state, uint32_t* codep, uint32_t byte) { static int state_table[32] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xxxxxxx */ 1,1,1,1,1,1,1,1, /* 10xxxxxx */ 2,2,2,2, /* 110xxxxx */ 3,3, /* 1110xxxx */ 4, /* 11110xxx */ 1 /* 11111xxx */ }; static int mask_bytes[32] = { 0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F, 0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x1F,0x1F,0x1F,0x1F, 0x0F,0x0F, 0x07, 0x00 }; static int next[5] = { 0, 1, 0, 2, 3 }; if (*state == UTF8_ACCEPT) { *codep = byte & mask_bytes[byte >> 3]; *state = state_table[byte >> 3]; } else if (*state > 0) { *codep = (byte & 0x3F) | (*codep << 6); *state = next[*state]; } return *state; } #define shift_key(i) _shift_key((i), this_buf, &timeout); int _shift_key(int i, int this_buf[20], int *timeout) { int thing = this_buf[*timeout-1]; (*timeout) = 0; switch (thing) { /* There are other combinations we can handle... */ case '2': return i + 4; case '5': return i + 8; case '3': return i + 12; case '4': return i + 16; default: return i; } } int bim_getkey(int read_timeout) { int timeout = 0; int this_buf[20]; int cin; uint32_t c; uint32_t istate = 0; while ((cin = bim_getch_timeout((timeout == 1) ? 50 : read_timeout))) { if (cin == -1) { if (timeout && this_buf[timeout-1] == '\033') return KEY_ESCAPE; return KEY_TIMEOUT; } if (!decode(&istate, &c, cin)) { if (timeout == 0) { switch (c) { case '\033': if (timeout == 0) { this_buf[timeout] = c; timeout++; } continue; case KEY_LINEFEED: return KEY_ENTER; case KEY_DELETE: return KEY_BACKSPACE; } return c; } else { if (timeout >= 1 && this_buf[timeout-1] == '\033' && c == '\033') { bim_unget(c); timeout = 0; return KEY_ESCAPE; } if (timeout >= 1 && this_buf[0] == '\033' && c == 'O') { this_buf[timeout] = c; timeout++; continue; } if (timeout >= 2 && this_buf[0] == '\033' && this_buf[1] == 'O') { switch (c) { case 'P': return KEY_F1; case 'Q': return KEY_F2; case 'R': return KEY_F3; case 'S': return KEY_F4; } timeout = 0; continue; } if (timeout >= 1 && this_buf[timeout-1] == '\033' && c != '[') { timeout = 0; bim_unget(c); return KEY_ESCAPE; } if (timeout >= 1 && this_buf[timeout-1] == '\033' && c == '[') { timeout = 1; this_buf[timeout] = c; timeout++; continue; } if (timeout >= 2 && this_buf[0] == '\033' && this_buf[1] == '[' && (isdigit(c) || (c == ';'))) { this_buf[timeout] = c; timeout++; continue; } if (timeout >= 2 && this_buf[0] == '\033' && this_buf[1] == '[') { switch (c) { case 'M': return KEY_MOUSE; case '<': return KEY_MOUSE_SGR; case 'A': return shift_key(KEY_UP); case 'B': return shift_key(KEY_DOWN); case 'C': return shift_key(KEY_RIGHT); case 'D': return shift_key(KEY_LEFT); case 'H': return KEY_HOME; case 'F': return KEY_END; case 'I': return KEY_PAGE_UP; case 'G': return KEY_PAGE_DOWN; case 'Z': return KEY_SHIFT_TAB; case '~': if (timeout == 3) { switch (this_buf[2]) { case '1': return KEY_HOME; case '3': return KEY_DELETE; case '4': return KEY_END; case '5': return KEY_PAGE_UP; case '6': return KEY_PAGE_DOWN; } } else if (timeout == 5) { if (this_buf[2] == '2' && this_buf[3] == '0' && this_buf[4] == '0') { return KEY_PASTE_BEGIN; } else if (this_buf[2] == '2' && this_buf[3] == '0' && this_buf[4] == '1') { return KEY_PASTE_END; } } else if (this_buf[2] == '1') { switch (this_buf[3]) { case '5': return KEY_F5; case '7': return KEY_F6; case '8': return KEY_F7; case '9': return KEY_F8; } } else if (this_buf[2] == '2') { switch (this_buf[3]) { case '0': return KEY_F9; case '1': return KEY_F10; case '3': return KEY_F11; case '4': return KEY_F12; } } break; } } timeout = 0; continue; } } else if (istate == UTF8_REJECT) { istate = 0; } } return KEY_TIMEOUT; } enum Key key_from_name(char * name) { for (unsigned int i = 0; i < sizeof(KeyNames)/sizeof(KeyNames[0]); ++i) { if (!strcmp(KeyNames[i].name, name)) return KeyNames[i].keycode; } if (name[0] == '^' && name[1] && !name[2]) { return name[1] - '@'; } if (!name[1]) return name[0]; /* Try decoding */ uint32_t c, state = 0; int candidate = -1; while (*name) { if (!decode(&state, &c, (unsigned char)*name)) { if (candidate == -1) candidate = c; else return -1; /* Reject `name` if it is multiple codepoints */ } else if (state == UTF8_REJECT) { return -1; } } return candidate; } /** * Pointer to current active buffer */ buffer_t * env = NULL; buffer_t * left_buffer = NULL; buffer_t * right_buffer = NULL; /** * A buffer for holding a number (line, repetition count) */ #define NAV_BUFFER_MAX 10 char nav_buf[NAV_BUFFER_MAX+1]; int nav_buffer = 0; /** * Available buffers */ int buffers_len = 0; int buffers_avail = 0; buffer_t ** buffers = NULL; /** * Create a new buffer */ buffer_t * buffer_new(void) { if (buffers_len == buffers_avail) { /* If we are out of buffer space, expand the buffers vector */ buffers_avail *= 2; buffers = realloc(buffers, sizeof(buffer_t *) * buffers_avail); } /* TODO: Clean up split support and support multiple splits... */ if (left_buffer) { left_buffer->left = 0; left_buffer->width = global_config.term_width; right_buffer->left = 0; right_buffer->width = global_config.term_width; left_buffer = NULL; right_buffer = NULL; } /* Allocate a new buffer */ buffers[buffers_len] = malloc(sizeof(buffer_t)); memset(buffers[buffers_len], 0x00, sizeof(buffer_t)); buffers[buffers_len]->left = 0; buffers[buffers_len]->width = global_config.term_width; buffers[buffers_len]->highlighting_paren = -1; buffers[buffers_len]->numbers = global_config.numbers; buffers[buffers_len]->gutter = 1; buffers_len++; global_config.tabs_visible = (!global_config.autohide_tabs) || (buffers_len > 1); return buffers[buffers_len-1]; } /** * Open the biminfo file. */ FILE * open_biminfo(void) { if (!global_config.use_biminfo) return NULL; char * home = getenv("HOME"); if (!home) { /* ... but since it's not, we need $HOME, so fail if it isn't set. */ return NULL; } /* biminfo lives at ~/.biminfo */ char biminfo_path[PATH_MAX+1] = {0}; sprintf(biminfo_path,"%s/.biminfo",home); /* Try to open normally first... */ FILE * biminfo = fopen(biminfo_path,"r+"); if (!biminfo) { /* Otherwise, try to create it. */ biminfo = fopen(biminfo_path,"w+"); } return biminfo; } /** * Check if a file is open by examining the biminfo file */ int file_is_open(char * file_name) { /* Get the absolute path of the file to normalize for lookup */ char tmp_path[PATH_MAX+2]; if (!realpath(file_name, tmp_path)) { return 0; /* Assume not */ } strcat(tmp_path," "); FILE * biminfo = open_biminfo(); if (!biminfo) return 0; /* Assume not */ /* Scan */ char line[PATH_MAX+64]; while (!feof(biminfo)) { fpos_t start_of_line; fgetpos(biminfo, &start_of_line); fgets(line, PATH_MAX+63, biminfo); if (line[0] != '%') { continue; } if (!strncmp(&line[1],tmp_path, strlen(tmp_path))) { /* File is currently open */ int pid = -1; sscanf(line+1+strlen(tmp_path)+1,"%d",&pid); if (pid != -1 && pid != getpid()) { if (!kill(pid, 0)) { int key = 0; render_error("biminfo indicates another instance may already be editing this file"); render_commandline_message("\n"); render_commandline_message("file path = %s\n", tmp_path); render_commandline_message("pid = %d (still running)\n", pid); render_commandline_message("Open file anyway? (y/N)"); while ((key = bim_getkey(DEFAULT_KEY_WAIT)) == KEY_TIMEOUT); if (key != 'y') { fclose(biminfo); return 1; } } } fclose(biminfo); return 0; } } fclose(biminfo); return 0; } /** * Fetch the cursor position from a biminfo file */ int fetch_from_biminfo(buffer_t * buf) { /* Can't fetch if we don't have a filename */ if (!buf->file_name) return 1; /* Get the absolute path of the file to normalize for lookup */ char tmp_path[PATH_MAX+2]; if (!realpath(buf->file_name, tmp_path)) { return 1; } strcat(tmp_path," "); FILE * biminfo = open_biminfo(); if (!biminfo) return 1; /* Scan */ char line[PATH_MAX+64]; while (!feof(biminfo)) { fpos_t start_of_line; fgetpos(biminfo, &start_of_line); fgets(line, PATH_MAX+63, biminfo); if (line[0] != '>') { continue; } if (!strncmp(&line[1],tmp_path, strlen(tmp_path))) { /* Read */ sscanf(line+1+strlen(tmp_path)+1,"%d",&buf->line_no); sscanf(line+1+strlen(tmp_path)+21,"%d",&buf->col_no); if (buf->line_no > buf->line_count) buf->line_no = buf->line_count; if (buf->col_no > buf->lines[buf->line_no-1]->actual) buf->col_no = buf->lines[buf->line_no-1]->actual; try_to_center(); fclose(biminfo); return 0; } } fclose(biminfo); return 0; } /** * Write a file containing the last cursor position of a buffer. */ int update_biminfo(buffer_t * buf, int is_open) { if (!buf->file_name) return 1; /* Get the absolute path of the file to normalize for lookup */ char tmp_path[PATH_MAX+1]; if (!realpath(buf->file_name, tmp_path)) { return 1; } strcat(tmp_path," "); FILE * biminfo = open_biminfo(); if (!biminfo) return 1; /* Scan */ char line[PATH_MAX+64]; while (!feof(biminfo)) { fpos_t start_of_line; fgetpos(biminfo, &start_of_line); fgets(line, PATH_MAX+63, biminfo); if (line[0] != '>' && line[0] != '%') { continue; } if (!strncmp(&line[1],tmp_path, strlen(tmp_path))) { /* Update */ fsetpos(biminfo, &start_of_line); fprintf(biminfo,"%c%s %20d %20d\n", is_open ? '%' : '>', tmp_path, is_open ? getpid() : buf->line_no, buf->col_no); goto _done; } } if (ftell(biminfo) == 0) { /* New biminfo */ fprintf(biminfo, "# This is a biminfo file.\n"); fprintf(biminfo, "# It was generated by bim. Do not edit it by hand!\n"); fprintf(biminfo, "# Cursor positions and other state are stored here.\n"); } /* If we reach this point, we didn't find a record for this file * and the write cursor should be at the end, so just add a new line */ fprintf(biminfo,"%c%s %20d %20d\n", is_open ? '%' : '>', tmp_path, is_open ? getpid() : buf->line_no, buf->col_no); _done: fclose(biminfo); return 0; } void cancel_background_tasks(buffer_t * buf) { background_task_t * t = global_config.background_task; background_task_t * last = NULL; while (t) { if (t->env == buf) { if (last) { last->next = t->next; } else { global_config.background_task = t->next; } if (!t->next) { global_config.tail_task = last; } background_task_t * tmp = t->next; free(t); t = tmp; } else { last = t; t = t->next; } } } /** * Close a buffer */ buffer_t * buffer_close(buffer_t * buf) { int i; /* Locate the buffer in the buffer list */ for (i = 0; i < buffers_len; i++) { if (buf == buffers[i]) break; } /* This buffer doesn't exist? */ if (i == buffers_len) { return NULL; } /* Cancel any background tasks for this env */ cancel_background_tasks(buf); update_biminfo(buf, 0); /* Clean up lines used by old buffer */ for (int i = 0; i < buf->line_count; ++i) { free(buf->lines[i]); } free(buf->lines); if (buf->file_name) { free(buf->file_name); } history_t * h = buf->history; while (h->next) { h = h->next; } while (h) { history_t * x = h->previous; free(h); h = x; } /* Clean up the old buffer */ free(buf); /* Remove the buffer from the vector, moving others up */ if (i != buffers_len - 1) { memmove(&buffers[i], &buffers[i+1], sizeof(*buffers) * (buffers_len - i - 1)); } /* There is one less buffer */ buffers_len--; if (buffers_len && global_config.tab_offset >= buffers_len) global_config.tab_offset--; global_config.tabs_visible = (!global_config.autohide_tabs) || (buffers_len > 1); if (!buffers_len) { /* There are no more buffers. */ return NULL; } /* If this was the last buffer in the list, return the previous last buffer */ if (i == buffers_len) { return buffers[buffers_len-1]; } /* Otherwise return the buffer in the same location */ return buffers[i]; } /** * Convert syntax highlighting flag to color code */ const char * flag_to_color(int _flag) { int flag = _flag & FLAG_MASK_COLORS; switch (flag) { case FLAG_KEYWORD: return COLOR_KEYWORD; case FLAG_STRING: return COLOR_STRING; case FLAG_COMMENT: return COLOR_COMMENT; case FLAG_TYPE: return COLOR_TYPE; case FLAG_NUMERAL: return COLOR_NUMERAL; case FLAG_PRAGMA: return COLOR_PRAGMA; case FLAG_DIFFPLUS: return COLOR_GREEN; case FLAG_DIFFMINUS: return COLOR_RED; case FLAG_SELECT: return COLOR_FG; case FLAG_BOLD: return COLOR_BOLD; case FLAG_LINK_COLOR: return COLOR_LINK; case FLAG_ESCAPE: return COLOR_ESCAPE; default: return COLOR_FG; } } /** * Match and paint a single keyword. Returns 1 if the keyword was matched and 0 otherwise, * so it can be used for prefix checking for things that need further special handling. */ int match_and_paint(struct syntax_state * state, const char * keyword, int flag, int (*keyword_qualifier)(int c)) { if (keyword_qualifier(lastchar())) return 0; if (!keyword_qualifier(charat())) return 0; int i = state->i; int slen = 0; while (i < state->line->actual || *keyword == '\0') { if (*keyword == '\0' && (i >= state->line->actual || !keyword_qualifier(state->line->text[i].codepoint))) { for (int j = 0; j < slen; ++j) { paint(1, flag); } return 1; } if (*keyword != state->line->text[i].codepoint) return 0; i++; keyword++; slen++; } return 0; } /** * This is a basic character matcher for "keyword" characters. */ int simple_keyword_qualifier(int c) { return isalnum(c) || (c == '_'); } /** * These words can appear in comments and should be highlighted. * Since there are a lot of comment highlighters, this is provided * as a common function that can be used by multiple highlighters. */ int common_comment_buzzwords(struct syntax_state * state) { if (match_and_paint(state, "TODO", FLAG_NOTICE, simple_keyword_qualifier)) { return 1; } else if (match_and_paint(state, "XXX", FLAG_NOTICE, simple_keyword_qualifier)) { return 1; } else if (match_and_paint(state, "FIXME", FLAG_ERROR, simple_keyword_qualifier)) { return 1; } return 0; } /** * Paint a comment until end of line; assumes this comment can not continue. * (Some languages have comments that can continue with a \ - don't use this!) * Assumes you've already painted your comment start characters. */ int paint_comment(struct syntax_state * state) { while (charat() != -1) { if (common_comment_buzzwords(state)) continue; else { paint(1, FLAG_COMMENT); } } return -1; } /** * Find and return a highlighter by name, or return NULL if none was found. */ struct syntax_definition * find_syntax_calculator(const char * name) { for (struct syntax_definition * s = syntaxes; syntaxes && s->name; ++s) { if (!strcmp(s->name, name)) { return s; } } return NULL; } int syntax_count = 0; int syntax_space = 0; struct syntax_definition * syntaxes = NULL; void add_syntax(struct syntax_definition def) { /* See if a name match already exists for this def. */ for (struct syntax_definition * s = syntaxes; syntaxes && s->name; ++s) { if (!strcmp(def.name,s->name)) { *s = def; return; } } if (syntax_space == 0) { syntax_space = 4; syntaxes = calloc(sizeof(struct syntax_definition), syntax_space); } else if (syntax_count +1 == syntax_space) { syntax_space *= 2; syntaxes = realloc(syntaxes, sizeof(struct syntax_definition) * syntax_space); for (int i = syntax_count; i < syntax_space; ++i) syntaxes[i].name = NULL; } syntaxes[syntax_count] = def; syntax_count++; } void redraw_all(void); /** * Calculate syntax highlighting for the given line, and lines after * if their initial syntax state has changed by this recalculation. * * If `line_no` is -1, this line is taken to be a special line and not * part of a buffer; search highlighting will not be processed and syntax * highlighting will halt after the line is finished. * * If `env->slowop` is currently enabled, recalculation is skipped. */ void recalculate_syntax(line_t * line, int line_no) { if (env->slowop) return; /* Clear syntax for this line first */ int is_original = 1; while (1) { for (int i = 0; i < line->actual; ++i) { line->text[i].flags = line->text[i].flags & (3 << 5); } if (!env->syntax) { if (line_no != -1) rehighlight_search(line); return; } /* Start from the line's stored in initial state */ struct SyntaxState * s = (void*)krk_newInstance(env->syntax->krkClass); s->state.env = env; s->state.line = line; s->state.line_no = line_no; s->state.state = line->istate; s->state.i = 0; while (1) { ptrdiff_t before = krk_currentThread.stackTop - krk_currentThread.stack; krk_push(OBJECT_VAL(env->syntax->krkFunc)); krk_push(OBJECT_VAL(s)); KrkValue result = krk_callStack(1); krk_currentThread.stackTop = krk_currentThread.stack + before; if (IS_NONE(result) && (krk_currentThread.flags & KRK_THREAD_HAS_EXCEPTION)) { render_error("Exception occurred in plugin: %s", AS_INSTANCE(krk_currentThread.currentException)->_class->name->chars); render_commandline_message("\n"); krk_dumpTraceback(); goto _syntaxError; } else if (!IS_NONE(result) && !IS_INTEGER(result)) { render_error("Instead of an integer, got %s", krk_typeName(result)); render_commandline_message("\n"); goto _syntaxError; } s->state.state = IS_NONE(result) ? -1 : AS_INTEGER(result); if (s->state.state != 0) { if (line_no == -1) return; rehighlight_search(line); if (!is_original) { redraw_line(line_no); } if (line_no + 1 < env->line_count && env->lines[line_no+1]->istate != s->state.state) { line_no++; line = env->lines[line_no]; line->istate = s->state.state; if (env->loading) return; is_original = 0; goto _next; } return; } } _next: (void)0; } _syntaxError: krk_resetStack(); fprintf(stderr,"This syntax highlighter will be disabled in this environment."); env->syntax = NULL; cancel_background_tasks(env); pause_for_key(); redraw_all(); } /** * Recalculate tab widths. */ void recalculate_tabs(line_t * line) { if (env->loading) return; int j = 0; for (int i = 0; i < line->actual; ++i) { if (line->text[i].codepoint == '\t') { line->text[i].display_width = env->tabstop - (j % env->tabstop); } j += line->text[i].display_width; } } /** * The next section contains the basic editing primitives. All other * actions are built out of these primitives, and they are the basic * instructions that get stored in history to be undone (or redone). * * Primitives may recalculate syntax or redraw lines, if needed, but only * when conditions for redrawing are met (such as not being in `slowop`, * or loading the file; also replaying history, or when loading files). * * At the moment, primitives and most other functions do not take the current * buffer (environment) as an argument and instead rely on a global variable; * this should definitely be fixed at some point... */ /** * When a new action that produces history happens and there is forward * history that can be redone, we need to erase it as our tree has branched. * If we wanted, we could actually story things in a tree structure so that * the new branch and the old branch can both stick around, and that should * probably be explored in the future... */ void history_free(history_t * root) { if (!root->next) return; /* Find the last entry so we can free backwards */ history_t * n = root->next; while (n->next) { n = n->next; } /* Free everything after the root, including stored content. */ while (n != root) { history_t * p = n->previous; switch (n->type) { case HISTORY_REPLACE_LINE: free(n->contents.remove_replace_line.contents); /* fall-through */ case HISTORY_REMOVE_LINE: free(n->contents.remove_replace_line.old_contents); break; default: /* Nothing extra to free */ break; } free(n); n = p; } root->next = NULL; } /** * This macro is called by primitives to insert history elements for each * primitive action when performing in edit modes. */ #define HIST_APPEND(e) do { \ e->col = env->col_no; \ e->line = env->line_no; \ if (env->history) { \ e->previous = env->history; \ history_free(env->history); \ env->history->next = e; \ e->next = NULL; \ } \ env->history = e; \ } while (0) /** * Mark a point where a complete set of actions has ended. * Individual history entries include things like "insert one character" * but a user action that should be undone is "insert several characters"; * breaks should be inserted after a series of primitives when there is * a clear "end", such as when switching out of insert mode after typing. */ void set_history_break(void) { if (!global_config.history_enabled) return; /* Do not produce duplicate breaks, or add breaks if we are at a sentinel. */ if (env->history->type != HISTORY_BREAK && env->history->type != HISTORY_SENTINEL) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_BREAK; HIST_APPEND(e); } } /** * (Primitive) Insert a character into an existing line. * * This is the most basic primitive action: Take a line, and insert a codepoint * into it at a given offset. If `lineno` is not -1, the line is assumed to * be part of the active buffer. If inserting a character means the line needs * to grow, then it will be reallocated, so the return value of the new line * must ALWAYS be used. This primitive will NOT automatically update the * buffer with the new pointer, so if you are calling insert on a buffer you * MUST update env->lines[lineno-1] yourself. */ __attribute__((warn_unused_result)) line_t * line_insert(line_t * line, char_t c, int offset, int lineno) { if (!env->loading && global_config.history_enabled && lineno != -1) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_INSERT; e->contents.insert_delete_replace.lineno = lineno; e->contents.insert_delete_replace.offset = offset; e->contents.insert_delete_replace.codepoint = c.codepoint; HIST_APPEND(e); } /* If there is not enough space... */ if (line->actual == line->available) { /* Expand the line buffer */ if (line->available == 0) { line->available = 8; } else { line->available *= 2; } line = realloc(line, sizeof(line_t) + sizeof(char_t) * line->available); } /* If this was not the last character, then shift remaining characters forward. */ if (offset < line->actual) { memmove(&line->text[offset+1], &line->text[offset], sizeof(char_t) * (line->actual - offset)); } /* Insert the new character */ line->text[offset] = c; /* There is one new character in the line */ line->actual += 1; if (!env->loading) { line->rev_status = 2; /* Modified */ recalculate_tabs(line); recalculate_syntax(line, lineno); } return line; } /** * (Primitive) Delete a character from a line. * * Remove the character at the given offset. We never shrink lines, so this * does not have a return value, and delete should never be called during * a loading operation (though it may be called during a history replay). */ void line_delete(line_t * line, int offset, int lineno) { /* Can't delete character before start of line. */ if (offset == 0) return; /* Can't delete past end of line either */ if (offset > line->actual) return; if (!env->loading && global_config.history_enabled && lineno != -1) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_DELETE; e->contents.insert_delete_replace.lineno = lineno; e->contents.insert_delete_replace.offset = offset; e->contents.insert_delete_replace.old_codepoint = line->text[offset-1].codepoint; HIST_APPEND(e); } /* If this isn't the last character, we need to move all subsequent characters backwards */ if (offset < line->actual) { memmove(&line->text[offset-1], &line->text[offset], sizeof(char_t) * (line->actual - offset)); } /* The line is one character shorter */ line->actual -= 1; line->rev_status = 2; recalculate_tabs(line); recalculate_syntax(line, lineno); } /** * (Primitive) Replace a character in a line. * * Replaces the codepoint at the given offset with a new character. Since this * does not involve any size changes, it does not have a return value. * Since a replacement character may be a tab, we do still need to recalculate * character widths for tabs as they may change. */ void line_replace(line_t * line, char_t _c, int offset, int lineno) { if (!env->loading && global_config.history_enabled && lineno != -1) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_REPLACE; e->contents.insert_delete_replace.lineno = lineno; e->contents.insert_delete_replace.offset = offset; e->contents.insert_delete_replace.codepoint = _c.codepoint; e->contents.insert_delete_replace.old_codepoint = line->text[offset].codepoint; HIST_APPEND(e); } line->text[offset] = _c; if (!env->loading) { line->rev_status = 2; /* Modified */ recalculate_tabs(line); recalculate_syntax(line, lineno); } } /** * (Primitive) Remove a line from the active buffer * * This primitive is only valid for a buffer. Delete a line, or if this is the * only line in the buffer, clear it but keep the line around with no * characters. We use the `line_delete` primitive to clear that line, * otherwise we are our own primitive and produce history entries. * * While we do not shrink the `lines` array, it is returned here anyway. */ line_t ** remove_line(line_t ** lines, int offset) { /* If there is only one line, clear it instead of removing it. */ if (env->line_count == 1) { while (lines[offset]->actual > 0) { line_delete(lines[offset], lines[offset]->actual, offset); } return lines; } /* When a line is removed, we need to keep its contents so we * can un-remove it on redo... */ if (!env->loading && global_config.history_enabled) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_REMOVE_LINE; e->contents.remove_replace_line.lineno = offset; e->contents.remove_replace_line.old_contents = malloc(sizeof(line_t) + sizeof(char_t) * lines[offset]->available); memcpy(e->contents.remove_replace_line.old_contents, lines[offset], sizeof(line_t) + sizeof(char_t) * lines[offset]->available); HIST_APPEND(e); } /* Otherwise, free the data used by the line */ free(lines[offset]); /* Move other lines up */ if (offset < env->line_count-1) { memmove(&lines[offset], &lines[offset+1], sizeof(line_t *) * (env->line_count - (offset - 1))); lines[env->line_count-1] = NULL; } /* There is one less line */ env->line_count -= 1; return lines; } /** * (Primitive) Add a new line to the active buffer. * * Inserts a new line into a buffer at the given line offset. * Since this grows the buffer, it will return the new line array * after reallocation if needed. */ line_t ** add_line(line_t ** lines, int offset) { /* Invalid offset? */ if (offset > env->line_count) return lines; if (!env->loading && global_config.history_enabled) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_ADD_LINE; e->contents.add_merge_split_lines.lineno = offset; HIST_APPEND(e); } /* Not enough space */ if (env->line_count == env->line_avail) { /* Allocate more space */ env->line_avail *= 2; lines = realloc(lines, sizeof(line_t *) * env->line_avail); } /* If this isn't the last line, move other lines down */ if (offset < env->line_count) { memmove(&lines[offset+1], &lines[offset], sizeof(line_t *) * (env->line_count - offset)); } /* Allocate the new line */ lines[offset] = calloc(sizeof(line_t) + sizeof(char_t) * 32, 1); lines[offset]->available = 32; /* There is one new line */ env->line_count += 1; env->lines = lines; if (!env->loading) { lines[offset]->rev_status = 2; /* Modified */ } if (offset > 0 && !env->loading) { recalculate_syntax(lines[offset-1],offset-1); } return lines; } /** * (Primitive) Replace a line with data from another line. * * This is only called when pasting yanks after calling `add_line`, * but it allows us to have simpler history for that action. */ void replace_line(line_t ** lines, int offset, line_t * replacement) { if (!env->loading && global_config.history_enabled) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_REPLACE_LINE; e->contents.remove_replace_line.lineno = offset; e->contents.remove_replace_line.old_contents = malloc(sizeof(line_t) + sizeof(char_t) * lines[offset]->available); memcpy(e->contents.remove_replace_line.old_contents, lines[offset], sizeof(line_t) + sizeof(char_t) * lines[offset]->available); e->contents.remove_replace_line.contents = malloc(sizeof(line_t) + sizeof(char_t) * replacement->available); memcpy(e->contents.remove_replace_line.contents, replacement, sizeof(line_t) + sizeof(char_t) * replacement->available); HIST_APPEND(e); } if (lines[offset]->available < replacement->actual) { lines[offset] = realloc(lines[offset], sizeof(line_t) + sizeof(char_t) * replacement->available); lines[offset]->available = replacement->available; } lines[offset]->actual = replacement->actual; memcpy(&lines[offset]->text, &replacement->text, sizeof(char_t) * replacement->actual); if (!env->loading) { lines[offset]->rev_status = 2; recalculate_syntax(lines[offset],offset); } } /** * (Primitive) Merge two consecutive lines. * * Take two lines in a buffer and turn them into one line. * `lineb` is the offset of the second line... or the * line number of the first line, depending on which indexing * system you prefer to think about. This won't grow `lines`, * but it will likely modify it and can reallocate individual * lines as well. */ line_t ** merge_lines(line_t ** lines, int lineb) { /* linea is the line immediately before lineb */ int linea = lineb - 1; if (!env->loading && global_config.history_enabled) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_MERGE_LINES; e->contents.add_merge_split_lines.lineno = lineb; e->contents.add_merge_split_lines.split = env->lines[linea]->actual; HIST_APPEND(e); } /* If there isn't enough space in linea hold both... */ if (lines[linea]->available < lines[linea]->actual + lines[lineb]->actual) { while (lines[linea]->available < lines[linea]->actual + lines[lineb]->actual) { /* ... allocate more space until it fits */ if (lines[linea]->available == 0) { lines[linea]->available = 8; } else { lines[linea]->available *= 2; } } lines[linea] = realloc(lines[linea], sizeof(line_t) + sizeof(char_t) * lines[linea]->available); } /* Copy the second line into the first line */ memcpy(&lines[linea]->text[lines[linea]->actual], &lines[lineb]->text, sizeof(char_t) * lines[lineb]->actual); /* The first line is now longer */ lines[linea]->actual = lines[linea]->actual + lines[lineb]->actual; if (!env->loading) { lines[linea]->rev_status = 2; recalculate_tabs(lines[linea]); recalculate_syntax(lines[linea], linea); } /* Remove the second line */ free(lines[lineb]); /* Move other lines up */ if (lineb < env->line_count) { memmove(&lines[lineb], &lines[lineb+1], sizeof(line_t *) * (env->line_count - (lineb - 1))); lines[env->line_count-1] = NULL; } /* There is one less line */ env->line_count -= 1; return lines; } /** * (Primitive) Split a line into two lines at the given column. * * Takes one line and makes it two lines. There are some optimizations * if you are trying to "split" at the first or last column, which * are both just treated as add_line. */ line_t ** split_line(line_t ** lines, int line, int split) { /* If we're trying to split from the start, just add a new blank line before */ if (split == 0) { return add_line(lines, line); } if (!env->loading && global_config.history_enabled) { history_t * e = malloc(sizeof(history_t)); e->type = HISTORY_SPLIT_LINE; e->contents.add_merge_split_lines.lineno = line; e->contents.add_merge_split_lines.split = split; HIST_APPEND(e); } if (!env->loading) { unhighlight_matching_paren(); } /* Allocate more space as needed */ if (env->line_count == env->line_avail) { env->line_avail *= 2; lines = realloc(lines, sizeof(line_t *) * env->line_avail); } /* Shift later lines down */ if (line < env->line_count) { memmove(&lines[line+2], &lines[line+1], sizeof(line_t *) * (env->line_count - line)); } int remaining = lines[line]->actual - split; /* This is some wacky math to get a good power-of-two */ int v = remaining; v--; v |= v >> 1; v |= v >> 2; v |= v >> 4; v |= v >> 8; v |= v >> 16; v++; /* Allocate space for the new line */ lines[line+1] = calloc(sizeof(line_t) + sizeof(char_t) * v, 1); lines[line+1]->available = v; lines[line+1]->actual = remaining; /* Move the data from the old line into the new line */ memmove(lines[line+1]->text, &lines[line]->text[split], sizeof(char_t) * remaining); lines[line]->actual = split; if (!env->loading) { lines[line]->rev_status = 2; lines[line+1]->rev_status = 2; recalculate_tabs(lines[line]); recalculate_tabs(lines[line+1]); recalculate_syntax(lines[line], line); recalculate_syntax(lines[line+1], line+1); } /* There is one new line */ env->line_count += 1; /* We may have reallocated lines */ return lines; } /** * Primitives end here. Everything after this point that wants to * perform modifications must be built on these primitives and * should never directly modify env->lines or the contents thereof, * outside of syntax highlighting flag changes. */ /** * The following section is where we implement "smart" automatic * indentation. A lot of this is hacked-together nonsense and "smart" * is a bit of an overstatement. */ /** * Understand spaces and comments and check if the previous line * ended with a brace or a colon. */ int line_ends_with_brace(line_t * line) { int i = line->actual-1; while (i >= 0) { if ((line->text[i].flags & 0x1F) == FLAG_COMMENT || line->text[i].codepoint == ' ') { i--; } else { break; } } if (i < 0) return 0; return (line->text[i].codepoint == '{' || line->text[i].codepoint == ':') ? i+1 : 0; } /** * Determine if a given line is a comment by checking its initial * syntax highlighting state value. This is used by automatic indentation * to continue block comments in languages like C. * * TODO: Why isn't this a syntax-> method? */ int line_is_comment(line_t * line) { if (!env->syntax) return 0; if (!strcmp(env->syntax->name,"c")) { if (line->istate == 1) return 1; } else if (!strcmp(env->syntax->name,"java")) { if (line->istate == 1) return 1; } else if (!strcmp(env->syntax->name,"kotlin")) { if (line->istate == 1) return 1; } else if (!strcmp(env->syntax->name,"rust")) { if (line->istate > 0) return 1; } return 0; } /** * Figure out where the indentation for a brace belongs by finding * where the start of the line is after whitespace. This is called * by default when we insert } and tries to align it with the indentation * of the matching opening {. */ int find_brace_line_start(int line, int col) { int ncol = col - 1; while (ncol > 0) { if (env->lines[line-1]->text[ncol-1].codepoint == ')') { int t_line_no = env->line_no; int t_col_no = env->col_no; env->line_no = line; env->col_no = ncol; int paren_match_line = -1, paren_match_col = -1; find_matching_paren(&paren_match_line, &paren_match_col, 1); if (paren_match_line != -1) { line = paren_match_line; } env->line_no = t_line_no; env->col_no = t_col_no; break; } else if (env->lines[line-1]->text[ncol-1].codepoint == ' ') { ncol--; } else { break; } } return line; } /** * Add indentation from the previous (temporally) line. * * By "temporally", we mean not necessarily the line above, but * potentially the line below if we are inserting a line above * the cursor. */ void add_indent(int new_line, int old_line, int ignore_brace) { if (env->indent) { int changed = 0; if (old_line < new_line && line_is_comment(env->lines[new_line])) { for (int i = 0; i < env->lines[old_line]->actual; ++i) { if (env->lines[old_line]->text[i].codepoint == '/') { if (env->lines[old_line]->text[i+1].codepoint == '*') { /* Insert ' * ' */ char_t space = {1,FLAG_COMMENT,' '}; char_t asterisk = {1,FLAG_COMMENT,'*'}; env->lines[new_line] = line_insert(env->lines[new_line],space,i,new_line); env->lines[new_line] = line_insert(env->lines[new_line],asterisk,i+1,new_line); env->lines[new_line] = line_insert(env->lines[new_line],space,i+2,new_line); env->col_no += 3; } break; } else if (env->lines[old_line]->text[i].codepoint == ' ' && env->lines[old_line]->text[i+1].codepoint == '*') { /* Insert ' * ' */ char_t space = {1,FLAG_COMMENT,' '}; char_t asterisk = {1,FLAG_COMMENT,'*'}; env->lines[new_line] = line_insert(env->lines[new_line],space,i,new_line); env->lines[new_line] = line_insert(env->lines[new_line],asterisk,i+1,new_line); env->lines[new_line] = line_insert(env->lines[new_line],space,i+2,new_line); env->col_no += 3; break; } else if (env->lines[old_line]->text[i].codepoint == ' ' || env->lines[old_line]->text[i].codepoint == '\t' || env->lines[old_line]->text[i].codepoint == '*') { env->lines[new_line] = line_insert(env->lines[new_line],env->lines[old_line]->text[i],i,new_line); env->col_no++; changed = 1; } else { break; } } } else { int line_to_copy_from = old_line; int col; if (old_line < new_line && !ignore_brace && (col = line_ends_with_brace(env->lines[old_line])) && env->lines[old_line]->text[col-1].codepoint == '{') { line_to_copy_from = find_brace_line_start(old_line+1, col)-1; } for (int i = 0; i < env->lines[line_to_copy_from]->actual; ++i) { if (line_to_copy_from < new_line && i == env->lines[line_to_copy_from]->actual - 3 && env->lines[line_to_copy_from]->text[i].codepoint == ' ' && env->lines[line_to_copy_from]->text[i+1].codepoint == '*' && env->lines[line_to_copy_from]->text[i+2].codepoint == '/') { break; } else if (env->lines[line_to_copy_from]->text[i].codepoint == ' ' || env->lines[line_to_copy_from]->text[i].codepoint == '\t') { env->lines[new_line] = line_insert(env->lines[new_line],env->lines[line_to_copy_from]->text[i],i,new_line); env->col_no++; changed = 1; } else { break; } } } if (old_line < new_line && !ignore_brace && line_ends_with_brace(env->lines[old_line])) { if (env->tabs) { char_t c = {0}; c.codepoint = '\t'; c.display_width = env->tabstop; env->lines[new_line] = line_insert(env->lines[new_line], c, env->col_no-1, new_line); env->col_no++; changed = 1; } else { for (int j = 0; j < env->tabstop; ++j) { char_t c = {0}; c.codepoint = ' '; c.display_width = 1; env->lines[new_line] = line_insert(env->lines[new_line], c, env->col_no-1, new_line); env->col_no++; } changed = 1; } } int was_whitespace = 1; for (int i = 0; i < env->lines[old_line]->actual; ++i) { if (env->lines[old_line]->text[i].codepoint != ' ' && env->lines[old_line]->text[i].codepoint != '\t') { was_whitespace = 0; break; } } if (was_whitespace) { while (env->lines[old_line]->actual) { line_delete(env->lines[old_line], env->lines[old_line]->actual, old_line); } } if (changed) { recalculate_syntax(env->lines[new_line],new_line); } } } /** * Initialize a buffer with default values. * * Should be called after creating a buffer. */ void setup_buffer(buffer_t * env) { /* If this buffer was already initialized, clear out its line data */ if (env->lines) { for (int i = 0; i < env->line_count; ++i) { free(env->lines[i]); } free(env->lines); } /* Default state parameters */ env->line_no = 1; /* Default cursor position */ env->col_no = 1; env->line_count = 1; /* Buffers always have at least one line */ env->modified = 0; env->readonly = 0; env->offset = 0; env->line_avail = 8; /* Default line buffer capacity */ env->tabs = 1; /* Tabs by default */ env->tabstop = 4; /* Tab stop width */ env->indent = 1; /* Auto-indent by default */ env->history = malloc(sizeof(struct history)); memset(env->history, 0, sizeof(struct history)); env->last_save_history = env->history; /* Allocate line buffer */ env->lines = malloc(sizeof(line_t *) * env->line_avail); /* Initialize the first line */ env->lines[0] = calloc(sizeof(line_t) + sizeof(char_t) * 32, 1); env->lines[0]->available = 32; } /** * Toggle buffered / unbuffered modes */ struct termios old; void get_initial_termios(void) { tcgetattr(STDOUT_FILENO, &old); } void set_unbuffered(void) { struct termios new = old; new.c_iflag &= (~ICRNL) & (~IXON); new.c_lflag &= (~ICANON) & (~ECHO) & (~ISIG); #ifdef VLNEXT new.c_cc[VLNEXT] = 0; #endif tcsetattr(STDOUT_FILENO, TCSAFLUSH, &new); } void set_buffered(void) { tcsetattr(STDOUT_FILENO, TCSAFLUSH, &old); } /** * Convert codepoint to utf-8 string */ int to_eight(uint32_t codepoint, char * out) { memset(out, 0x00, 7); if (codepoint < 0x0080) { out[0] = (char)codepoint; } else if (codepoint < 0x0800) { out[0] = 0xC0 | (codepoint >> 6); out[1] = 0x80 | (codepoint & 0x3F); } else if (codepoint < 0x10000) { out[0] = 0xE0 | (codepoint >> 12); out[1] = 0x80 | ((codepoint >> 6) & 0x3F); out[2] = 0x80 | (codepoint & 0x3F); } else if (codepoint < 0x200000) { out[0] = 0xF0 | (codepoint >> 18); out[1] = 0x80 | ((codepoint >> 12) & 0x3F); out[2] = 0x80 | ((codepoint >> 6) & 0x3F); out[3] = 0x80 | ((codepoint) & 0x3F); } else if (codepoint < 0x4000000) { out[0] = 0xF8 | (codepoint >> 24); out[1] = 0x80 | (codepoint >> 18); out[2] = 0x80 | ((codepoint >> 12) & 0x3F); out[3] = 0x80 | ((codepoint >> 6) & 0x3F); out[4] = 0x80 | ((codepoint) & 0x3F); } else { out[0] = 0xF8 | (codepoint >> 30); out[1] = 0x80 | ((codepoint >> 24) & 0x3F); out[2] = 0x80 | ((codepoint >> 18) & 0x3F); out[3] = 0x80 | ((codepoint >> 12) & 0x3F); out[4] = 0x80 | ((codepoint >> 6) & 0x3F); out[5] = 0x80 | ((codepoint) & 0x3F); } return strlen(out); } /** * Get the presentation width of a codepoint */ int codepoint_width(wchar_t codepoint) { if (codepoint == '\t') { return 1; /* Recalculate later */ } if (codepoint < 32) { /* We render these as ^@ */ return 2; } if (codepoint == 0x7F) { /* Renders as ^? */ return 2; } if (codepoint > 0x7f && codepoint < 0xa0) { /* Upper control bytes <xx> */ return 4; } if (codepoint == 0xa0) { /* Non-breaking space _ */ return 1; } /* Skip wcwidth for anything under 256 */ if (codepoint > 127) { if (global_config.can_unicode) { /* Higher codepoints may be wider (eg. Japanese) */ int out = wcwidth(codepoint); if (out >= 1) return out; } /* Invalid character, render as [U+ABCD] or [U+ABCDEF] */ return (codepoint < 0x10000) ? 8 : 10; } return 1; } /** * The following section contains methods for crafting terminal escapes * for rendering the display. We do not use curses or any similar * library, so we have to generate these sequences ourself based on * some assumptions about the target terminal. */ /** * Move the terminal cursor */ void place_cursor(int x, int y) { printf("\033[%d;%dH", y, x); } /** * Given two color codes from a theme, convert them to an escape * sequence to set the foreground and background color. This allows * us to support basic 16, xterm 256, and true color in themes. */ char * color_string(const char * fg, const char * bg) { static char output[100]; char * t = output; t += sprintf(t,"\033[22;23;"); if (*bg == '@') { int _bg = atoi(bg+1); if (_bg < 10) { t += sprintf(t, "4%d;", _bg); } else { t += sprintf(t, "10%d;", _bg-10); } } else { t += sprintf(t, "48;%s;", bg); } if (*fg == '@') { int _fg = atoi(fg+1); if (_fg < 10) { t += sprintf(t, "3%dm", _fg); } else { t += sprintf(t, "9%dm", _fg-10); } } else { t += sprintf(t, "38;%sm", fg); } return output; } /** * Set text colors * * Normally, text colors are just strings, but if they * start with @ they will be parsed as integers * representing one of the 16 standard colors, suitable * for terminals without support for the 256- or 24-bit * color modes. */ void set_colors(const char * fg, const char * bg) { printf("%s", color_string(fg, bg)); } /** * Set just the foreground color * * (See set_colors above) */ void set_fg_color(const char * fg) { printf("\033[22;23;"); if (*fg == '@') { int _fg = atoi(fg+1); if (_fg < 10) { printf("3%dm", _fg); } else { printf("9%dm", _fg-10); } } else { printf("38;%sm", fg); } } /** * Clear the rest of this line */ void clear_to_end(void) { if (global_config.can_bce) { printf("\033[K"); } } /** * For terminals without bce, prepaint the whole line, so we don't have to track * where the cursor is for everything. Inefficient, but effective. */ void paint_line(const char * bg) { if (!global_config.can_bce) { set_colors(COLOR_FG, bg); for (int i = 0; i < global_config.term_width; ++i) { printf(" "); } printf("\r"); } } /** * Enable bold text display */ void set_bold(void) { printf("\033[1m"); } /** * Disable bold */ void unset_bold(void) { printf("\033[22m"); } /** * Enable underlined text display */ void set_underline(void) { printf("\033[4m"); } /** * Disable underlined text display */ void unset_underline(void) { printf("\033[24m"); } /** * Reset text display attributes */ void reset(void) { printf("\033[0m"); } /** * Clear the entire screen */ void clear_screen(void) { printf("\033[H\033[2J"); } /** * Hide the cursor */ void hide_cursor(void) { if (global_config.can_hideshow) { printf("\033[?25l"); } } /** * Show the cursor */ void show_cursor(void) { if (global_config.can_hideshow) { printf("\033[?25h"); } } /** * Store the cursor position */ void store_cursor(void) { printf("\0337"); } /** * Restore the cursor position. */ void restore_cursor(void) { printf("\0338"); } /** * Request mouse events */ void mouse_enable(void) { if (global_config.can_mouse) { printf("\033[?1000h"); if (global_config.can_sgrmouse) { printf("\033[?1006h"); } } } /** * Stop mouse events */ void mouse_disable(void) { if (global_config.can_mouse) { if (global_config.can_sgrmouse) { printf("\033[?1006l"); } printf("\033[?1000l"); } } /** * Shift the screen up one line */ void shift_up(int amount) { printf("\033[%dS", amount); } /** * Shift the screen down one line. */ void shift_down(int amount) { printf("\033[%dT", amount); } void insert_lines_at(int line, int count) { place_cursor(1, line); printf("\033[%dL", count); } void delete_lines_at(int line, int count) { place_cursor(1, line); printf("\033[%dM", count); } /** * Switch to the alternate terminal screen. */ void set_alternate_screen(void) { if (global_config.can_altscreen) { printf("\033[?1049h"); } } /** * Restore the standard terminal screen. */ void unset_alternate_screen(void) { if (global_config.can_altscreen) { printf("\033[?1049l"); } } /** * Enable bracketed paste mode. */ void set_bracketed_paste(void) { if (global_config.can_bracketedpaste) { printf("\033[?2004h"); } } /** * Disable bracketed paste mode. */ void unset_bracketed_paste(void) { if (global_config.can_bracketedpaste) { printf("\033[?2004l"); } } /** * Get the name of just a file from a full path. * Returns a pointer within the original string. * * Called in a few different places where the name of a file * is needed from its full path, such as drawing tab names or * building HTML files. */ char * file_basename(char * file) { char * c = strrchr(file, '/'); if (!c) return file; return (c+1); } /** * Print a tab name with fixed width and modifiers * into an output buffer and return the written width. */ int draw_tab_name(buffer_t * _env, char * out, int max_width, int * width) { uint32_t c, state = 0; char * t = _env->file_name ? file_basename(_env->file_name) : "[No Name]"; #define ADD(c) do { \ *o = c; \ o++; \ *o = '\0'; \ bytes++; \ } while (0) char * o = out; *o = '\0'; int bytes = 0; if (max_width < 2) return 1; ADD(' '); (*width)++; if (_env->modified) { if (max_width < 4) return 1; ADD('+'); (*width)++; ADD(' '); (*width)++; } while (*t) { /* File names can definitely by UTF-8, and we need to * understand their display width... */ if (!decode(&state, &c, (unsigned char)*t)) { /* But our displayed tab name is also just stored * as UTF-8 again, so we essentially rebuild it... */ char tmp[7]; int size = to_eight(c, tmp); if (bytes + size > 62) break; if (*width + size >= max_width) return 1; for (int i = 0; i < size; ++i) { ADD(tmp[i]); } (*width) += codepoint_width(c); } else if (state == UTF8_REJECT) { state = 0; } t++; } if (max_width == *width + 1) return 1; ADD(' '); (*width)++; #undef ADD return 0; } /** * Redraw the tabbar, with a tab for each buffer. * * The active buffer is highlighted. */ void redraw_tabbar(void) { if (!global_config.tabs_visible) return; /* Hide cursor while rendering UI */ hide_cursor(); /* Move to upper left */ place_cursor(1,1); paint_line(COLOR_TABBAR_BG); /* For each buffer... */ int offset = 0; if (global_config.tab_offset) { set_colors(COLOR_NUMBER_FG, COLOR_NUMBER_BG); printf("<"); offset++; } for (int i = global_config.tab_offset; i < buffers_len; i++) { buffer_t * _env = buffers[i]; if (_env == env) { /* If this is the active buffer, highlight it */ reset(); set_colors(COLOR_FG, COLOR_BG); set_bold(); } else { /* Otherwise use default tab color */ reset(); set_colors(COLOR_FG, COLOR_TAB_BG); set_underline(); } if (global_config.overlay_mode == OVERLAY_MODE_FILESEARCH) { if (global_config.command_buffer->actual) { char * f = _env->file_name ? file_basename(_env->file_name) : ""; /* TODO: Support unicode input here; needs conversion */ int i = 0; for (; i < global_config.command_buffer->actual && f[i] == global_config.command_buffer->text[i].codepoint; ++i); if (global_config.command_buffer->actual == i) { set_colors(COLOR_SEARCH_FG, COLOR_SEARCH_BG); } } } char title[64]; int size = 0; int filled = draw_tab_name(_env, title, global_config.term_width - offset, &size); if (filled) { offset += size; printf("%s", title); set_colors(COLOR_NUMBER_FG, COLOR_NUMBER_BG); while (offset != global_config.term_width - 1) { printf(" "); offset++; } printf(">"); break; } printf("%s", title); offset += size; } /* Reset bold/underline */ reset(); /* Fill the rest of the tab bar */ set_colors(COLOR_FG, COLOR_TABBAR_BG); clear_to_end(); } /** * Braindead log10 implementation for figuring out the width of the * line number column. */ int log_base_10(unsigned int v) { int r = (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 : (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 : (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0; return r; } /** * Render a line of text. * * This handles rendering the actual text content. A full line of text * also includes a line number and some padding, but those elements * are rendered elsewhere; this method can be used for lines that are * not attached to a buffer such as command input lines. * * width: width of the text display region (term width - line number width) * offset: how many cells into the line to start rendering at */ void render_line(line_t * line, int width, int offset, int line_no) { int i = 0; /* Offset in char_t line data entries */ int j = 0; /* Offset in terminal cells */ const char * last_color = NULL; int was_selecting = 0, was_searching = 0, was_underlining = 0; /* Set default text colors */ set_colors(COLOR_FG, line->is_current ? COLOR_ALT_BG : COLOR_BG); /* * When we are rendering in the middle of a wide character, * we render -'s to fill the remaining amount of the character's width. */ int remainder = 0; int is_spaces = 1; /* For each character in the line ... */ while (i < line->actual) { /* If there is remaining text... */ if (remainder) { /* If we should be drawing by now... */ if (j >= offset) { if (was_underlining) printf("\033[24m"); /* Fill remainder with -'s */ set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("-"); set_colors(COLOR_FG, line->is_current ? COLOR_ALT_BG : COLOR_BG); } /* One less remaining width cell to fill */ remainder--; /* Terminal offset moves forward */ j++; /* * If this was the last remaining character, move to * the next codepoint in the line */ if (remainder == 0) { i++; } continue; } /* Get the next character to draw */ char_t c = line->text[i]; if (c.codepoint != ' ') is_spaces = 0; /* If we should be drawing by now... */ if (j >= offset) { /* If this character is going to fall off the edge of the screen... */ if (j - offset + c.display_width >= width) { /* We draw this with special colors so it isn't ambiguous */ set_colors(COLOR_ALT_FG, COLOR_ALT_BG); if (was_underlining) printf("\033[24m"); /* If it's wide, draw ---> as needed */ while (j - offset < width - 1) { printf("-"); j++; } /* End the line with a > to show it overflows */ printf(">"); set_colors(COLOR_FG, COLOR_BG); return; } /* Syntax highlighting */ const char * color = flag_to_color(c.flags); if (c.flags & FLAG_SELECT) { if ((c.flags & FLAG_MASK_COLORS) == FLAG_NONE) color = COLOR_SELECTFG; set_colors(color, COLOR_SELECTBG); was_selecting = 1; } else if ((c.flags & FLAG_SEARCH) || (c.flags == FLAG_NOTICE)) { set_colors(COLOR_SEARCH_FG, COLOR_SEARCH_BG); was_searching = 1; } else if (c.flags == FLAG_ERROR) { set_colors(COLOR_ERROR_FG, COLOR_ERROR_BG); was_searching = 1; /* co-opting this should work... */ } else { if (was_selecting || was_searching) { was_selecting = 0; was_searching = 0; set_colors(color, line->is_current ? COLOR_ALT_BG : COLOR_BG); last_color = color; } else if (!last_color || strcmp(color, last_color)) { set_fg_color(color); last_color = color; } } if ((c.flags & FLAG_UNDERLINE) && !was_underlining) { printf("\033[4m"); was_underlining = 1; } else if (!(c.flags & FLAG_UNDERLINE) && was_underlining) { printf("\033[24m"); was_underlining = 0; } if ((env->mode == MODE_COL_SELECTION || env->mode == MODE_COL_INSERT) && line_no >= ((env->start_line < env->line_no) ? env->start_line : env->line_no) && line_no <= ((env->start_line < env->line_no) ? env->line_no : env->start_line) && ((j == env->sel_col) || (j < env->sel_col && j + c.display_width > env->sel_col))) { set_colors(COLOR_SELECTFG, COLOR_SELECTBG); was_selecting = 1; } #define _set_colors(fg,bg) \ if (!(c.flags & FLAG_SELECT) && !(c.flags & FLAG_SEARCH) && !(was_selecting)) { \ set_colors(fg,(line->is_current && bg == COLOR_BG) ? COLOR_ALT_BG : bg); \ } /* Render special characters */ if (c.codepoint == '\t') { _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("%s", global_config.tab_indicator); for (int i = 1; i < c.display_width; ++i) { printf("%s" ,global_config.space_indicator); } _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.codepoint < 32) { /* Codepoints under 32 to get converted to ^@ escapes */ _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("^%c", '@' + c.codepoint); _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.codepoint == 0x7f) { _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("^?"); _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.codepoint > 0x7f && c.codepoint < 0xa0) { _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("<%2x>", c.codepoint); _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.codepoint == 0xa0) { _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("_"); _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.display_width == 8) { _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("[U+%04x]", c.codepoint); _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.display_width == 10) { _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("[U+%06x]", c.codepoint); _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (i > 0 && is_spaces && c.codepoint == ' ' && !(i % env->tabstop)) { _set_colors(COLOR_ALT_FG, COLOR_BG); /* Normal background so this is more subtle */ if (global_config.can_unicode) { printf("▏"); } else { printf("|"); } _set_colors(last_color ? last_color : COLOR_FG, COLOR_BG); } else if (c.codepoint == ' ' && i == line->actual - 1) { /* Special case: space at end of line */ _set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("%s",global_config.space_indicator); _set_colors(COLOR_FG, COLOR_BG); } else { /* Normal characters get output */ char tmp[7]; /* Max six bytes, use 7 to ensure last is always nil */ to_eight(c.codepoint, tmp); printf("%s", tmp); } /* Advance the terminal cell offset by the render width of this character */ j += c.display_width; /* Advance to the next character */ i++; } else if (c.display_width > 1) { /* * If this is a wide character but we aren't ready to render yet, * we may need to draw some filler text for the remainder of its * width to ensure we don't jump around when horizontally scrolling * past wide characters. */ remainder = c.display_width - 1; j++; } else { /* Regular character, not ready to draw, advance without doing anything */ j++; i++; } } if (was_underlining) printf("\033[24m"); /** * Determine what color the rest of the line should be. */ if (env->mode != MODE_LINE_SELECTION) { /* If we are not selecting, then use the normal background or highlight * the current line if that feature is enabled. */ if (line->is_current) { set_colors(COLOR_FG, COLOR_ALT_BG); } else { set_colors(COLOR_FG, COLOR_BG); } } else { /* If this line was empty but was part of the selection, we didn't * set the selection color already, so we need to do that here. */ if (!line->actual) { if (env->line_no == line_no || (env->start_line > env->line_no && (line_no >= env->line_no && line_no <= env->start_line)) || (env->start_line < env->line_no && (line_no >= env->start_line && line_no <= env->line_no))) { set_colors(COLOR_SELECTFG, COLOR_SELECTBG); } } } /** * In column modes, we may need to draw a column select beyond the end * of a given line, so we need to draw up to that point first. */ if ((env->mode == MODE_COL_SELECTION || env->mode == MODE_COL_INSERT) && line_no >= ((env->start_line < env->line_no) ? env->start_line : env->line_no) && line_no <= ((env->start_line < env->line_no) ? env->line_no : env->start_line) && j <= env->sel_col && env->sel_col < width) { set_colors(COLOR_FG, COLOR_BG); while (j < env->sel_col) { printf(" "); j++; } set_colors(COLOR_SELECTFG, COLOR_SELECTBG); printf(" "); j++; set_colors(COLOR_FG, COLOR_BG); } /* * `maxcolumn` renders the background outside of the requested line length * in a different color, with a line at the border between the two. */ if (env->maxcolumn && line_no > -1 /* ensures we don't do this for command line */) { /* Fill out the normal background */ if (j < offset) j = offset; for (; j < width + offset && j < env->maxcolumn; ++j) { printf(" "); } /* Draw the line */ if (j < width + offset && j == env->maxcolumn) { j++; set_colors(COLOR_ALT_FG, COLOR_ALT_BG); if (global_config.can_unicode) { printf("▏"); /* Should this be configurable? */ } else { printf("|"); } } /* Fill the rest with the alternate background color */ set_colors(COLOR_ALT_FG, COLOR_ALT_BG); } /** * Clear out the rest of the line. If we are the only buffer or the right split, * and our terminal supports `bce`, we can just bce; otherwise write spaces * until we reach the right side of the screen. */ if (global_config.can_bce && (line_no == -1 || env->left + env->width == global_config.term_width)) { clear_to_end(); } else { /* Paint the rest of the line */ if (j < offset) j = offset; for (; j < width + offset; ++j) { printf(" "); } } } /** * Get the width of the line number region */ int num_width(void) { if (!env->numbers) return 0; int w = log_base_10(env->line_count) + 3; if (w < 4) return 4; return w; } /** * Display width of the revision status gutter. */ int gutter_width(void) { return env->gutter; } /** * Draw the gutter and line numbers. */ void draw_line_number(int x) { if (!env->numbers) return; /* Draw the line number */ if (env->lines[x]->is_current) { set_colors(COLOR_NUMBER_BG, COLOR_NUMBER_FG); } else { set_colors(COLOR_NUMBER_FG, COLOR_NUMBER_BG); } if (global_config.relative_lines && x+1 != env->line_no) { x = x+1 - env->line_no; x = ((x < 0) ? -x : x)-1; } int num_size = num_width() - 2; /* Padding */ for (int y = 0; y < num_size - log_base_10(x + 1); ++y) { printf(" "); } printf("%d%c", x + 1, ((x+1 == env->line_no || global_config.horizontal_shift_scrolling) && env->coffset > 0) ? '<' : ' '); } /** * Used to highlight the current line after moving the cursor. */ void recalculate_current_line(void) { int something_changed = 0; if (global_config.highlight_current_line) { for (int i = 0; i < env->line_count; ++i) { if (env->lines[i]->is_current && i != env->line_no-1) { env->lines[i]->is_current = 0; something_changed = 1; redraw_line(i); } else if (i == env->line_no-1 && !env->lines[i]->is_current) { env->lines[i]->is_current = 1; something_changed = 1; redraw_line(i); } } } else { something_changed = 1; } if (something_changed && global_config.relative_lines) { for (int i = env->offset; i < env->offset + global_config.term_height - global_config.bottom_size - 1 && i < env->line_count; ++i) { /* Place cursor for line number */ place_cursor(1 + gutter_width() + env->left, (i)-env->offset + 1 + global_config.tabs_visible); draw_line_number(i); } } } /** * Redraw line. * * This draws the line number as well as the actual text. */ void redraw_line(int x) { if (env->loading) return; /* Determine if this line is visible. */ if (x - env->offset < 0 || x - env->offset > global_config.term_height - global_config.bottom_size - 1 - global_config.tabs_visible) { return; } /* Calculate offset in screen */ int j = x - env->offset; /* Hide cursor when drawing */ hide_cursor(); /* Move cursor to upper left most cell of this line */ place_cursor(1 + env->left,1 + global_config.tabs_visible + j); /* Draw a gutter on the left. */ if (env->gutter) { switch (env->lines[x]->rev_status) { case 1: set_colors(COLOR_NUMBER_FG, COLOR_GREEN); printf(" "); break; case 2: set_colors(COLOR_NUMBER_FG, global_config.color_gutter ? COLOR_SEARCH_BG : COLOR_ALT_FG); printf(" "); break; case 3: set_colors(COLOR_NUMBER_FG, COLOR_KEYWORD); printf(" "); break; case 4: set_colors(COLOR_ALT_FG, COLOR_RED); printf("▆"); break; case 5: set_colors(COLOR_KEYWORD, COLOR_RED); printf("▆"); break; default: set_colors(COLOR_NUMBER_FG, COLOR_ALT_FG); printf(" "); break; } } draw_line_number(x); int should_shift = x + 1 == env->line_no || global_config.horizontal_shift_scrolling || ((env->mode == MODE_COL_SELECTION || env->mode == MODE_COL_INSERT) && x + 1 >= ((env->start_line < env->line_no) ? env->start_line : env->line_no) && x + 1 <= ((env->start_line < env->line_no) ? env->line_no : env->start_line)); /* * Draw the line text * If this is the active line, the current character cell offset should be used. * (Non-active lines are not shifted and always render from the start of the line) */ render_line(env->lines[x], env->width - gutter_width() - num_width(), should_shift ? env->coffset : 0, x+1); } /** * Draw a ~ line where there is no buffer text. */ void draw_excess_line(int j) { place_cursor(1+env->left,1 + global_config.tabs_visible + j); paint_line(COLOR_ALT_BG); set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("~"); if (env->left + env->width == global_config.term_width && global_config.can_bce) { clear_to_end(); } else { /* Paint the rest of the line */ for (int x = 1; x < env->width; ++x) { printf(" "); } } } /** * Redraw the entire text area */ void redraw_text(void) { if (!env) return; if (!global_config.has_terminal) return; /* Hide cursor while rendering */ hide_cursor(); /* Figure out the available size of the text region */ int l = global_config.term_height - global_config.bottom_size - global_config.tabs_visible; int j = 0; /* Draw each line */ for (int x = env->offset; j < l && x < env->line_count; x++) { redraw_line(x); j++; } /* Draw the rest of the text region as ~ lines */ for (; j < l; ++j) { draw_excess_line(j); } } static int view_left_offset = 0; static int view_right_offset = 0; /** * When in split view, draw the other buffer. * Has special handling for when the split is * on a single buffer. */ void redraw_alt_buffer(buffer_t * buf) { if (left_buffer == right_buffer) { /* draw the opposite view */ int left, width, offset; left = env->left; width = env->width; offset = env->offset; if (left == 0) { /* Draw the right side */ env->left = width; env->width = global_config.term_width - width; env->offset = view_right_offset; view_left_offset = offset; } else { env->left = 0; env->width = global_config.term_width * global_config.split_percent / 100; env->offset = view_left_offset; view_right_offset = offset; } redraw_text(); env->left = left; env->width = width; env->offset = offset; } /* Swap out active buffer */ buffer_t * tmp = env; env = buf; /* Redraw text */ redraw_text(); /* Return original active buffer */ env = tmp; } /** * Basically wcswidth() but implemented internally using our * own utf-8 decoder to ensure it works properly. */ int display_width_of_string(const char * str) { uint8_t * s = (uint8_t *)str; int out = 0; uint32_t c, state = 0; while (*s) { if (!decode(&state, &c, *s)) { out += codepoint_width(c); } else if (state == UTF8_REJECT) { state = 0; } s++; } return out; } int statusbar_append_status(int *remaining_width, size_t *filled, char * output, char * base, ...) { va_list args; va_start(args, base); char tmp[100] = {0}; /* should be big enough */ vsnprintf(tmp, 100, base, args); va_end(args); int width = display_width_of_string(tmp) + 2; size_t totalWidth = strlen(tmp); totalWidth += strlen(color_string(COLOR_STATUS_ALT, COLOR_STATUS_BG)); totalWidth += strlen(color_string(COLOR_STATUS_FG, COLOR_STATUS_BG)); totalWidth += strlen(color_string(COLOR_STATUS_ALT, COLOR_STATUS_BG)); totalWidth += 3; if (totalWidth + *filled >= 2047) { return 0; } if (width < *remaining_width) { strcat(output,color_string(COLOR_STATUS_ALT, COLOR_STATUS_BG)); strcat(output,"["); strcat(output,color_string(COLOR_STATUS_FG, COLOR_STATUS_BG)); strcat(output, tmp); strcat(output,color_string(COLOR_STATUS_ALT, COLOR_STATUS_BG)); strcat(output,"]"); (*remaining_width) -= width; (*filled) += totalWidth; return width; } else { return 0; } } int statusbar_build_right(char * right_hand) { char tmp[1024] = {0}; sprintf(tmp, " Line %d/%d Col: %d ", env->line_no, env->line_count, env->col_no); int out = display_width_of_string(tmp); char * s = right_hand; s += sprintf(s, "%s", color_string(COLOR_STATUS_ALT, COLOR_STATUS_BG)); s += sprintf(s, " Line "); s += sprintf(s, "%s", color_string(COLOR_STATUS_FG, COLOR_STATUS_BG)); s += sprintf(s, "%d/%d ", env->line_no, env->line_count); s += sprintf(s, "%s", color_string(COLOR_STATUS_ALT, COLOR_STATUS_BG)); s += sprintf(s, " Col: "); s += sprintf(s, "%s", color_string(COLOR_STATUS_FG, COLOR_STATUS_BG)); s += sprintf(s, "%d ", env->col_no); return out; } /** * Draw the status bar * * The status bar shows the name of the file, whether it has modifications, * and (in the future) what syntax highlighting mode is enabled. * * The right side of the status bar shows the line number and column. */ void redraw_statusbar(void) { if (global_config.hide_statusbar) return; if (!global_config.has_terminal) return; if (!env) return; /* Hide cursor while rendering */ hide_cursor(); /* Move cursor to the status bar line (second from bottom */ place_cursor(1, global_config.term_height - 1); /* Set background colors for status line */ paint_line(COLOR_STATUS_BG); set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG); /* Pre-render the right hand side of the status bar */ char right_hand[1024] = {0}; int right_width = statusbar_build_right(right_hand); char status_bits[2048] = {0}; /* Sane maximum */ size_t filled = 0; int status_bits_width = 0; int remaining_width = global_config.term_width - right_width; #define ADD(...) do { status_bits_width += statusbar_append_status(&remaining_width, &filled, status_bits, __VA_ARGS__); } while (0) if (env->syntax) { ADD("%s",env->syntax->name); } /* Print file status indicators */ if (env->modified) { ADD("+"); } if (env->readonly) { ADD("ro"); } if (env->crnl) { ADD("crnl"); } if (env->tabs) { ADD("tabs"); } else { ADD("spaces=%d", env->tabstop); } if (global_config.yanks) { ADD("y:%ld", global_config.yank_count); } if (env->indent) { ADD("indent"); } if (global_config.smart_complete) { ADD("complete"); } if (global_config.background_task) { ADD("working"); } #undef ADD uint8_t * file_name = (uint8_t *)(env->file_name ? env->file_name : "[No Name]"); int file_name_width = display_width_of_string((char*)file_name); if (remaining_width > 3) { int is_chopped = 0; while (remaining_width < file_name_width + 3) { is_chopped = 1; if ((*file_name & 0xc0) == 0xc0) { /* First byte of a multibyte character */ file_name++; while ((*file_name & 0xc0) == 0x80) file_name++; } else { file_name++; } file_name_width = display_width_of_string((char*)file_name); } if (is_chopped) { set_colors(COLOR_ALT_FG, COLOR_STATUS_BG); printf("<"); } set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG); printf("%s ", file_name); } printf("%s", status_bits); /* Clear the rest of the status bar */ clear_to_end(); /* Move the cursor appropriately to draw it */ place_cursor(global_config.term_width - right_width, global_config.term_height - 1); set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG); printf("%s",right_hand); } /** * Redraw the navigation numbers on the right side of the command line */ void redraw_nav_buffer() { if (!global_config.has_terminal) return; if (nav_buffer) { store_cursor(); place_cursor(global_config.term_width - nav_buffer - 2, global_config.term_height); printf("%s", nav_buf); clear_to_end(); restore_cursor(); } } /** * Draw the command line * * The command line either has input from the user (:quit, :!make, etc.) * or shows the INSERT (or VISUAL in the future) mode name. */ void redraw_commandline(void) { if (!global_config.has_terminal) return; if (!env) return; /* Hide cursor while rendering */ hide_cursor(); /* Move cursor to the last line */ place_cursor(1, global_config.term_height); /* Set background color */ paint_line(COLOR_BG); set_colors(COLOR_FG, COLOR_BG); /* If we are in an edit mode, note that. */ if (env->mode == MODE_INSERT) { set_bold(); printf("-- INSERT --"); clear_to_end(); unset_bold(); } else if (env->mode == MODE_LINE_SELECTION) { set_bold(); printf("-- LINE SELECTION -- (%d:%d)", (env->start_line < env->line_no) ? env->start_line : env->line_no, (env->start_line < env->line_no) ? env->line_no : env->start_line ); clear_to_end(); unset_bold(); } else if (env->mode == MODE_COL_SELECTION) { set_bold(); printf("-- COL SELECTION -- (%d:%d %d)", (env->start_line < env->line_no) ? env->start_line : env->line_no, (env->start_line < env->line_no) ? env->line_no : env->start_line, (env->sel_col) ); clear_to_end(); unset_bold(); } else if (env->mode == MODE_COL_INSERT) { set_bold(); printf("-- COL INSERT -- (%d:%d %d)", (env->start_line < env->line_no) ? env->start_line : env->line_no, (env->start_line < env->line_no) ? env->line_no : env->start_line, (env->sel_col) ); clear_to_end(); unset_bold(); } else if (env->mode == MODE_REPLACE) { set_bold(); printf("-- REPLACE --"); clear_to_end(); unset_bold(); } else if (env->mode == MODE_CHAR_SELECTION) { set_bold(); printf("-- CHAR SELECTION -- "); clear_to_end(); unset_bold(); } else if (env->mode == MODE_DIRECTORY_BROWSE) { set_bold(); printf("-- DIRECTORY BROWSE --"); clear_to_end(); unset_bold(); } else { clear_to_end(); } redraw_nav_buffer(); } /** * Draw a message on the command line. */ void render_commandline_message(char * message, ...) { /* varargs setup */ va_list args; va_start(args, message); /* Hide cursor while rendering */ hide_cursor(); /* Move cursor to the last line */ place_cursor(1, global_config.term_height); /* Set background color */ paint_line(COLOR_BG); set_colors(COLOR_FG, COLOR_BG); vprintf(message, args); va_end(args); /* Clear the rest of the status bar */ clear_to_end(); redraw_nav_buffer(); } BIM_ACTION(redraw_all, 0, "Repaint the screen." )(void) { if (!env) return; redraw_tabbar(); redraw_text(); if (left_buffer) { redraw_alt_buffer(left_buffer == env ? right_buffer : left_buffer); } redraw_statusbar(); redraw_commandline(); if (global_config.overlay_mode == OVERLAY_MODE_COMMAND || global_config.overlay_mode == OVERLAY_MODE_SEARCH || global_config.overlay_mode == OVERLAY_MODE_FILESEARCH) { render_command_input_buffer(); } } void pause_for_key(void) { int c; while ((c = bim_getch())== -1); bim_unget(c); redraw_all(); } /** * Redraw all screen elements except the other split view. */ void redraw_most(void) { redraw_tabbar(); redraw_text(); redraw_statusbar(); redraw_commandline(); } /** * Disable screen splitting. */ void unsplit(void) { if (left_buffer) { left_buffer->left = 0; left_buffer->width = global_config.term_width; } if (right_buffer) { right_buffer->left = 0; right_buffer->width = global_config.term_width; } left_buffer = NULL; right_buffer = NULL; redraw_all(); } /** * Update the terminal title bar */ void update_title(void) { if (!global_config.can_title) return; char cwd[1024] = {'/',0}; getcwd(cwd, 1024); for (int i = 1; i < 3; ++i) { printf("\033]%d;%s%s (%s) - Bim\007", i, env->file_name ? env->file_name : "[No Name]", env->modified ? " +" : "", cwd); } } /** * Mark this buffer as modified and * redraw the status and tabbar if needed. */ void set_modified(void) { /* If it was already marked modified, no need to do anything */ if (env->modified) return; /* Mark as modified */ env->modified = 1; /* Redraw some things */ update_title(); redraw_tabbar(); redraw_statusbar(); } /** * Draw a message on the status line */ void render_status_message(char * message, ...) { if (!env) return; /* Don't print when there's no active environment; this usually means a bimrc command tried to print something */ /* varargs setup */ va_list args; va_start(args, message); /* Hide cursor while rendering */ hide_cursor(); /* Move cursor to the status bar line (second from bottom */ place_cursor(1, global_config.term_height - 1); /* Set background colors for status line */ paint_line(COLOR_STATUS_BG); set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG); /* Process format string */ vprintf(message, args); va_end(args); /* Clear the rest of the status bar */ clear_to_end(); } /** * Draw an error message to the command line. */ void render_error(char * message, ...) { /* varargs setup */ va_list args; va_start(args, message); if (env) { /* Hide cursor while rendering */ hide_cursor(); /* Move cursor to the command line */ place_cursor(1, global_config.term_height); /* Set appropriate error message colors */ set_colors(COLOR_ERROR_FG, COLOR_ERROR_BG); /* Draw the message */ vprintf(message, args); va_end(args); global_config.had_error = 1; } else { printf("bim: error during startup: "); vprintf(message, args); va_end(args); printf("\n"); } } char * paren_pairs = "()[]{}<>"; int is_paren(int c) { char * p = paren_pairs; while (*p) { if (c == *p) return 1; p++; } return 0; } #define _rehighlight_parens() do { \ if (i < 0 || i >= env->line_count) break; \ for (int j = 0; j < env->lines[i]->actual; ++j) { \ if (i == line-1 && j == col-1) { \ env->lines[line-1]->text[col-1].flags |= FLAG_SELECT; \ continue; \ } else { \ env->lines[i]->text[j].flags &= (~FLAG_SELECT); \ } \ } \ redraw_line(i); \ } while (0) /** * If the config option is enabled, find the matching * paren character and highlight it with the SELECT * colors, clearing out other SELECT values. As we * co-opt the SELECT flag, don't do this in selection * modes - only in normal and insert modes. */ void highlight_matching_paren(void) { if (env->mode == MODE_LINE_SELECTION || env->mode == MODE_CHAR_SELECTION) return; if (!global_config.highlight_parens) return; int line = -1, col = -1; if (env->line_no <= env->line_count && env->col_no <= env->lines[env->line_no-1]->actual && is_paren(env->lines[env->line_no-1]->text[env->col_no-1].codepoint)) { find_matching_paren(&line, &col, 1); } else if (env->line_no <= env->line_count && env->col_no > 1 && is_paren(env->lines[env->line_no-1]->text[env->col_no-2].codepoint)) { find_matching_paren(&line, &col, 2); } if (env->highlighting_paren == -1 && line == -1) return; if (env->highlighting_paren > 0) { int i = env->highlighting_paren - 1; _rehighlight_parens(); } if (env->highlighting_paren != line && line != -1) { int i = line - 1; _rehighlight_parens(); } env->highlighting_paren = line; } /** * Recalculate syntax for the matched paren. * Useful when entering selection modes. */ void unhighlight_matching_paren(void) { if (env->highlighting_paren > 0 && env->highlighting_paren <= env->line_count) { for (int i = 0; i < env->line_count; i++) { for (int j = 0; j < env->lines[i]->actual; ++j) { env->lines[i]->text[j].flags &= ~(FLAG_SELECT); } } env->highlighting_paren = -1; } } /** * Move the cursor to the appropriate location based * on where it is in the text region. * * This does some additional math to set the text * region horizontal offset. */ void place_cursor_actual(void) { /* Invalid positions */ if (env->line_no < 1) env->line_no = 1; if (env->col_no < 1) env->col_no = 1; /* Account for the left hand gutter */ int num_size = num_width() + gutter_width(); int x = num_size + 1 - env->coffset; /* Determine where the cursor is physically */ for (int i = 0; i < env->col_no - 1; ++i) { char_t * c = &env->lines[env->line_no-1]->text[i]; x += c->display_width; } /* y is a bit easier to calculate */ int y = env->line_no - env->offset + 1; int needs_redraw = 0; while (y < 2 + global_config.cursor_padding && env->offset > 0) { y++; env->offset--; needs_redraw = 1; } while (y > 1 + global_config.term_height - global_config.bottom_size - global_config.cursor_padding - global_config.tabs_visible) { y--; env->offset++; needs_redraw = 1; } if (needs_redraw) { redraw_text(); redraw_tabbar(); redraw_statusbar(); redraw_commandline(); } /* If the cursor has gone off screen to the right... */ if (x > env->width - 1) { /* Adjust the offset appropriately to scroll horizontally */ int diff = x - (env->width - 1); env->coffset += diff; x -= diff; redraw_text(); } /* Same for scrolling horizontally to the left */ if (x < num_size + 1) { int diff = (num_size + 1) - x; env->coffset -= diff; x += diff; redraw_text(); } highlight_matching_paren(); recalculate_current_line(); /* Move the actual terminal cursor */ place_cursor(x+env->left,y - !global_config.tabs_visible); /* Show the cursor */ show_cursor(); } /** * If the screen is split, update the split sizes based * on the new terminal width and the user's split_percent setting. */ void update_split_size(void) { if (!left_buffer) return; if (left_buffer == right_buffer) { if (left_buffer->left == 0) { left_buffer->width = global_config.term_width * global_config.split_percent / 100; } else { right_buffer->left = global_config.term_width * global_config.split_percent / 100; right_buffer->width = global_config.term_width - right_buffer->left; } return; } left_buffer->left = 0; left_buffer->width = global_config.term_width * global_config.split_percent / 100; right_buffer->left = left_buffer->width; right_buffer->width = global_config.term_width - left_buffer->width; } /** * Update screen size */ void update_screen_size(void) { struct winsize w; ioctl(STDOUT_FILENO, TIOCGWINSZ, &w); global_config.term_width = w.ws_col; global_config.term_height = w.ws_row; if (env) { if (left_buffer) { update_split_size(); } else if (env != left_buffer && env != right_buffer) { env->width = w.ws_col; } } for (int i = 0; i < buffers_len; ++i) { if (buffers[i] != left_buffer && buffers[i] != right_buffer) { buffers[i]->width = w.ws_col; } } } /** * Handle terminal size changes */ void SIGWINCH_handler(int sig) { (void)sig; update_screen_size(); redraw_all(); signal(SIGWINCH, SIGWINCH_handler); } /** * Handle suspend */ void SIGTSTP_handler(int sig) { (void)sig; mouse_disable(); set_buffered(); reset(); clear_screen(); show_cursor(); unset_bracketed_paste(); unset_alternate_screen(); fflush(stdout); signal(SIGTSTP, SIG_DFL); raise(SIGTSTP); } void SIGCONT_handler(int sig) { (void)sig; set_alternate_screen(); set_bracketed_paste(); set_unbuffered(); update_screen_size(); mouse_enable(); redraw_all(); update_title(); signal(SIGCONT, SIGCONT_handler); signal(SIGTSTP, SIGTSTP_handler); } void try_to_center() { int half_a_screen = (global_config.term_height - 3) / 2; if (half_a_screen < env->line_no) { env->offset = env->line_no - half_a_screen; } else { env->offset = 0; } } BIM_ACTION(suspend, 0, "Suspend bim and the rest of the job it was run in." )(void) { kill(0, SIGTSTP); } /** * Move the cursor to a specific line. */ BIM_ACTION(goto_line, ARG_IS_CUSTOM, "Jump to the requested line." )(int line) { if (line == -1) line = env->line_count; /* Respect file bounds */ if (line < 1) line = 1; if (line > env->line_count) line = env->line_count; /* Move the cursor / text region offsets */ env->coffset = 0; env->line_no = line; env->col_no = 1; if (!env->loading) { if (line > env->offset && line < env->offset + global_config.term_height - global_config.bottom_size) { place_cursor_actual(); } else { try_to_center(); } redraw_most(); } else { try_to_center(); } } /** * Process (part of) a file and add it to a buffer. */ void add_buffer(uint8_t * buf, int size) { for (int i = 0; i < size; ++i) { if (!decode(&state, &codepoint_r, buf[i])) { uint32_t c = codepoint_r; if (c == '\n') { if (!env->crnl && env->lines[env->line_no-1]->actual && env->lines[env->line_no-1]->text[env->lines[env->line_no-1]->actual-1].codepoint == '\r') { env->lines[env->line_no-1]->actual--; env->crnl = 1; } env->lines = add_line(env->lines, env->line_no); env->col_no = 1; env->line_no += 1; } else if (env->crnl && c == '\r') { continue; } else { char_t _c; _c.codepoint = (uint32_t)c; _c.flags = 0; _c.display_width = codepoint_width((wchar_t)c); line_t * line = env->lines[env->line_no - 1]; line_t * nline = line_insert(line, _c, env->col_no - 1, env->line_no-1); if (line != nline) { env->lines[env->line_no - 1] = nline; } env->col_no += 1; } } else if (state == UTF8_REJECT) { state = 0; } } } /** * Add a raw string to a buffer. Convenience wrapper * for add_buffer for nil-terminated strings. */ void add_string(char * string) { add_buffer((uint8_t*)string,strlen(string)); } int str_ends_with(const char * haystack, const char * needle) { int i = strlen(haystack); int j = strlen(needle); do { if (haystack[i] != needle[j]) return 0; if (j == 0) return 1; if (i == 0) return 0; i--; j--; } while (1); } /** * Find a syntax highlighter for the given filename. */ struct syntax_definition * match_syntax(char * file) { for (struct syntax_definition * s = syntaxes; syntaxes && s->name; ++s) { for (char ** ext = s->ext; *ext; ++ext) { if (str_ends_with(file, *ext)) return s; } } return NULL; } /** * Set the syntax configuration by the name of the syntax highlighter. */ void set_syntax_by_name(const char * name) { if (!strcmp(name,"none")) { for (int i = 0; i < env->line_count; ++i) { env->lines[i]->istate = -1; for (int j = 0; j < env->lines[i]->actual; ++j) { env->lines[i]->text[j].flags &= (3 << 5); } } env->syntax = NULL; redraw_all(); return; } for (struct syntax_definition * s = syntaxes; syntaxes && s->name; ++s) { if (!strcmp(name,s->name)) { env->syntax = s; for (int i = 0; i < env->line_count; ++i) { env->lines[i]->istate = -1; } schedule_complete_recalc(); redraw_all(); return; } } render_error("unrecognized syntax type"); } /** * Check if a string is all numbers. */ int is_all_numbers(const char * c) { while (*c) { if (!isdigit(*c)) return 0; c++; } return 1; } struct file_listing { int type; char * filename; }; int sort_files(const void * a, const void * b) { struct file_listing * _a = (struct file_listing *)a; struct file_listing * _b = (struct file_listing *)b; if (_a->type == _b->type) { return strcmp(_a->filename, _b->filename); } else { return _a->type - _b->type; } } void read_directory_into_buffer(char * file) { DIR * dirp = opendir(file); if (!dirp) { env->loading = 0; return; } add_string("# Directory listing for `"); add_string(file); add_string("`\n"); /* Flexible array to hold directory contents */ int available = 32; int count = 0; struct file_listing * files = calloc(sizeof(struct file_listing), available); /* Read directory */ struct dirent * ent = readdir(dirp); while (ent) { struct stat statbuf; char * tmp = malloc(strlen(file) + 1 + strlen(ent->d_name) + 1); snprintf(tmp, strlen(file) + 1 + strlen(ent->d_name) + 1, "%s/%s", file, ent->d_name); stat(tmp, &statbuf); int type = (S_ISDIR(statbuf.st_mode)) ? 'd' : 'f'; if (count + 1 == available) { available *= 2; \ files = realloc(files, sizeof(struct file_listing) * available); \ } \ files[count].type = type; files[count].filename = strdup(ent->d_name); count++; ent = readdir(dirp); free(tmp); } closedir(dirp); /* Sort directory entries */ qsort(files, count, sizeof(struct file_listing), sort_files); for (int i = 0; i < count; ++i) { add_string(files[i].type == 'd' ? "d" : "f"); add_string(" "); add_string(files[i].filename); add_string("\n"); free(files[i].filename); } free(files); env->file_name = strdup(file); env->syntax = find_syntax_calculator("dirent"); schedule_complete_recalc(); env->readonly = 1; env->loading = 0; env->mode = MODE_DIRECTORY_BROWSE; env->line_no = 1; redraw_all(); } BIM_ACTION(open_file_from_line, 0, "When browsing a directory, open the file under the cursor." )(void) { if (env->lines[env->line_no-1]->actual < 1) return; if (env->lines[env->line_no-1]->text[0].codepoint != 'd' && env->lines[env->line_no-1]->text[0].codepoint != 'f') return; /* Collect file name */ char * tmp = malloc(strlen(env->file_name) + 1 + env->lines[env->line_no-1]->actual * 7); /* Should be enough */ memset(tmp, 0, strlen(env->file_name) + 1 + env->lines[env->line_no-1]->actual * 7); char * t = tmp; /* Start by copying the filename */ t += sprintf(t, "%s/", env->file_name); /* Start from character 2 to skip d/f and space */ for (int i = 2; i < env->lines[env->line_no-1]->actual; ++i) { t += to_eight(env->lines[env->line_no-1]->text[i].codepoint, t); } *t = '\0'; /* Normalize */ char tmp_path[PATH_MAX+1]; if (!realpath(tmp, tmp_path)) { free(tmp); return; } free(tmp); /* Open file */ buffer_t * old_buffer = env; open_file(tmp_path); buffer_close(old_buffer); update_title(); redraw_all(); } int line_matches(line_t * line, char * string) { uint32_t c = 0, state = 0; int i = 0; while (*string) { if (!decode(&state, &c, *string)) { if (i >= line->actual) return 0; if (line->text[i].codepoint != c) return 0; string++; i++; } else if (state == UTF8_REJECT) { state = 0; } } return 1; } void run_onload(buffer_t * env) { /* TODO */ KrkValue onLoad; if (krk_tableGet_fast(&krk_currentThread.module->fields, S("onload"), &onLoad)) { krk_push(onLoad); krk_push(krk_dict_of(0,NULL,0)); if (env->file_name) { krk_attachNamedObject(AS_DICT(krk_peek(0)), "filename", (KrkObj*)krk_copyString(env->file_name,strlen(env->file_name))); } if (env->syntax && env->syntax->krkClass) { krk_attachNamedObject(AS_DICT(krk_peek(0)), "highlighter", (KrkObj*)env->syntax->krkClass); } krk_callStack(1); krk_resetStack(); } } static void render_syntax_async(background_task_t * task) { buffer_t * old_env = env; env = task->env; int line_no = task->_private_i; if (env->line_count && line_no < env->line_count) { int tmp = env->loading; env->loading = 1; recalculate_syntax(env->lines[line_no], line_no); env->loading = tmp; if (env == old_env) { redraw_line(line_no); } } env = old_env; } static void schedule_complete_recalc(void) { if (env->line_count < 1000) { for (int i = 0; i < env->line_count; ++i) { recalculate_syntax(env->lines[i], i); } return; } /* TODO see if there's already a redraw scheduled */ for (int i = 0; i < env->line_count; ++i) { background_task_t * task = malloc(sizeof(background_task_t)); task->env = env; task->_private_i = i; task->func = render_syntax_async; task->next = NULL; if (global_config.tail_task) { global_config.tail_task->next = task; } global_config.tail_task = task; if (!global_config.background_task) { global_config.background_task = task; } } redraw_statusbar(); } /** * Create a new buffer from a file. */ void open_file(char * file) { env = buffer_new(); env->width = global_config.term_width; env->left = 0; env->loading = 1; setup_buffer(env); FILE * f; int init_line = -1; if (!strcmp(file,"-")) { /** * Read file from stdin. stderr provides terminal input. */ if (isatty(STDIN_FILENO)) { if (buffers_len == 1) { quit("stdin is a terminal and you tried to open -; not letting you do that"); } close_buffer(); render_error("stdin is a terminal and you tried to open -; not letting you do that"); return; } f = stdin; env->modified = 1; } else { char * l = strrchr(file, ':'); if (l && is_all_numbers(l+1)) { *l = '\0'; l++; init_line = atoi(l); } char * _file = file; if (file[0] == '~') { char * home = getenv("HOME"); if (home) { _file = malloc(strlen(file) + strlen(home) + 4); /* Paranoia */ sprintf(_file, "%s%s", home, file+1); } } if (file_is_open(_file)) { if (file != _file) free(_file); close_buffer(); return; } struct stat statbuf; if (!stat(_file, &statbuf) && S_ISDIR(statbuf.st_mode)) { read_directory_into_buffer(_file); if (file != _file) free(_file); return; } f = fopen(_file, "r"); if (file != _file) free(_file); if (!f && errno != ENOENT) { render_error("%s: %s", file, strerror(errno)); pause_for_key(); close_buffer(); return; } env->file_name = strdup(file); } if (!f) { if (global_config.highlight_on_open) { env->syntax = match_syntax(file); } env->loading = 0; if (global_config.go_to_line) { goto_line(1); } if (env->syntax && env->syntax->prefers_spaces) { env->tabs = 0; } update_biminfo(env, 1); run_onload(env); return; } uint8_t buf[BLOCK_SIZE]; state = 0; while (!feof(f) && !ferror(f)) { size_t r = fread(buf, 1, BLOCK_SIZE, f); add_buffer(buf, r); } if (ferror(f)) { env->loading = 0; return; } if (env->line_no && env->lines[env->line_no-1] && env->lines[env->line_no-1]->actual == 0) { /* Remove blank line from end */ env->lines = remove_line(env->lines, env->line_no-1); } if (global_config.highlight_on_open) { env->syntax = match_syntax(file); if (!env->syntax) { if (line_matches(env->lines[0], "<?xml")) set_syntax_by_name("xml"); else if (line_matches(env->lines[0], "<!doctype")) set_syntax_by_name("xml"); else if (line_matches(env->lines[0], "#!/usr/bin/env bash")) set_syntax_by_name("bash"); else if (line_matches(env->lines[0], "#!/bin/bash")) set_syntax_by_name("bash"); else if (line_matches(env->lines[0], "#!/bin/sh")) set_syntax_by_name("bash"); else if (line_matches(env->lines[0], "#!/usr/bin/env python")) set_syntax_by_name("py"); else if (line_matches(env->lines[0], "#!/usr/bin/env groovy")) set_syntax_by_name("groovy"); } if (!env->syntax && global_config.syntax_fallback) { set_syntax_by_name(global_config.syntax_fallback); } schedule_complete_recalc(); } /* Try to automatically figure out tabs vs. spaces */ int tabs = 0, spaces = 0; for (int i = 0; i < env->line_count; ++i) { if (env->lines[i]->actual > 1) { /* Make sure line has at least some text on it */ if (env->lines[i]->text[0].codepoint == '\t') tabs++; if (env->lines[i]->text[0].codepoint == ' ' && env->lines[i]->text[1].codepoint == ' ') /* Ignore spaces at the start of asterisky C comments */ spaces++; } } if (spaces > tabs) { env->tabs = 0; } else if (spaces == tabs && env->syntax) { env->tabs = env->syntax->prefers_spaces; } if (spaces > tabs) { int one = 0, two = 0, three = 0, four = 0; /* If you use more than that, I don't like you. */ int lastCount = 0; for (int i = 0; i < env->line_count; ++i) { if (env->lines[i]->actual > 1 && !line_is_comment(env->lines[i])) { /* Count spaces at beginning */ int c = 0, diff = 0; while (c < env->lines[i]->actual && env->lines[i]->text[c].codepoint == ' ') c++; if (c > lastCount) { diff = c - lastCount; } else if (c < lastCount) { diff = lastCount - c; } if (diff == 1) one++; if (diff == 2) two++; if (diff == 3) three++; if (diff == 4) four++; lastCount = c; } } if (four > three && four > two && four > one) { env->tabstop = 4; } else if (three > two && three > one) { env->tabstop = 3; } else if (two > one) { env->tabstop = 2; } else { env->tabstop = 1; } } env->loading = 0; if (global_config.check_git) { env->checkgitstatusonwrite = 1; git_examine(file); } for (int i = 0; i < env->line_count; ++i) { recalculate_tabs(env->lines[i]); } if (global_config.go_to_line) { if (init_line != -1) { goto_line(init_line); } else { env->line_no = 1; env->col_no = 1; fetch_from_biminfo(env); place_cursor_actual(); redraw_all(); set_preferred_column(); } } update_biminfo(env, 1); fclose(f); run_onload(env); } /** * Clean up the terminal and exit the editor. */ void quit(const char * message) { mouse_disable(); set_buffered(); reset(); clear_screen(); show_cursor(); unset_bracketed_paste(); unset_alternate_screen(); krk_freeVM(); if (message) { fprintf(stdout, "%s\n", message); } exit(0); } /** * Try to quit, but don't continue if there are * modified buffers open. */ void try_quit(void) { for (int i = 0; i < buffers_len; i++ ) { buffer_t * _env = buffers[i]; if (_env->modified) { if (_env->file_name) { render_error("Modifications made to file `%s` in tab %d. Aborting.", _env->file_name, i+1); } else { render_error("Unsaved new file in tab %d. Aborting.", i+1); } return; } } /* Close all buffers */ while (buffers_len) { buffer_close(buffers[0]); } quit(NULL); } /** * Switch to the previous buffer */ BIM_ACTION(previous_tab, 0, "Switch the previous tab" )(void) { buffer_t * last = NULL; for (int i = 0; i < buffers_len; i++) { buffer_t * _env = buffers[i]; if (_env == env) { if (last) { /* Wrap around */ env = last; if (left_buffer && (left_buffer != env && right_buffer != env)) unsplit(); redraw_all(); update_title(); return; } else { env = buffers[buffers_len-1]; if (left_buffer && (left_buffer != env && right_buffer != env)) unsplit(); redraw_all(); update_title(); return; } } last = _env; } } /** * Switch to the next buffer */ BIM_ACTION(next_tab, 0, "Switch to the next tab" )(void) { for (int i = 0; i < buffers_len; i++) { buffer_t * _env = buffers[i]; if (_env == env) { if (i != buffers_len - 1) { env = buffers[i+1]; if (left_buffer && (left_buffer != env && right_buffer != env)) unsplit(); redraw_all(); update_title(); return; } else { /* Wrap around */ env = buffers[0]; if (left_buffer && (left_buffer != env && right_buffer != env)) unsplit(); redraw_all(); update_title(); return; } } } } /** * Check for modified lines in a file by examining `git diff` output. * This can be enabled globally in bimrc or per environment with the 'git' option. */ int git_examine(char * filename) { if (env->modified) return 1; int fds[2]; pipe(fds); int child = fork(); if (child == 0) { FILE * dev_null = fopen("/dev/null","w"); close(fds[0]); dup2(fds[1], STDOUT_FILENO); dup2(fileno(dev_null), STDERR_FILENO); char * args[] = {"git","--no-pager","diff","-U0","--no-color","--",filename,NULL}; exit(execvp("git",args)); } else if (child < 0) { return 1; } close(fds[1]); FILE * f = fdopen(fds[0],"r"); int line_offset = 0; while (!feof(f)) { int c = fgetc(f); if (c < 0) break; if (c == '@' && line_offset == 0) { /* Read line offset, count */ if (fgetc(f) == '@' && fgetc(f) == ' ' && fgetc(f) == '-') { /* This algorithm is borrowed from Kakoune and only requires us to parse the @@ line */ int from_line = 0; int from_count = 0; int to_line = 0; int to_count = 0; fscanf(f,"%d",&from_line); if (fgetc(f) == ',') { fscanf(f,"%d",&from_count); } else { from_count = 1; } fscanf(f,"%d",&to_line); if (fgetc(f) == ',') { fscanf(f,"%d",&to_count); } else { to_count = 1; } if (to_line > env->line_count) continue; if (from_count == 0 && to_count > 0) { /* No -, all + means all of to_count is green */ for (int i = 0; i < to_count; ++i) { env->lines[to_line+i-1]->rev_status = 1; /* Green */ } } else if (from_count > 0 && to_count == 0) { /* * No +, all - means we have a deletion. We mark the next line such that it has a red bar at the top * Note that to_line is one lower than the affected line, so we don't need to mess with indexes. */ if (to_line >= env->line_count) continue; env->lines[to_line]->rev_status = 4; /* Red */ } else if (from_count > 0 && from_count == to_count) { /* from = to, all modified */ for (int i = 0; i < to_count; ++i) { env->lines[to_line+i-1]->rev_status = 3; /* Blue */ } } else if (from_count > 0 && from_count < to_count) { /* from < to, some modified, some added */ for (int i = 0; i < from_count; ++i) { env->lines[to_line+i-1]->rev_status = 3; /* Blue */ } for (int i = from_count; i < to_count; ++i) { env->lines[to_line+i-1]->rev_status = 1; /* Green */ } } else if (to_count > 0 && from_count > to_count) { /* from > to, we deleted but also modified some lines */ env->lines[to_line-1]->rev_status = 5; /* Red + Blue */ for (int i = 1; i < to_count; ++i) { env->lines[to_line+i-1]->rev_status = 3; /* Blue */ } } } } if (c == '\n') { line_offset = 0; continue; } line_offset++; } fclose(f); return 0; } /** * Write file contents to FILE */ void output_file(buffer_t * env, FILE * f) { int i, j; for (i = 0; i < env->line_count; ++i) { line_t * line = env->lines[i]; line->rev_status = 0; for (j = 0; j < line->actual; j++) { char_t c = line->text[j]; if (c.codepoint == 0) { char buf[1] = {0}; fwrite(buf, 1, 1, f); } else { char tmp[8] = {0}; int i = to_eight(c.codepoint, tmp); fwrite(tmp, i, 1, f); } } if (env->crnl) fputc('\r', f); fputc('\n', f); } } /** * Write active buffer to file */ void write_file(char * file) { if (!file) { render_error("Need a file to write to."); return; } char * _file = file; if (file[0] == '~') { char * home = getenv("HOME"); if (home) { _file = malloc(strlen(file) + strlen(home) + 4); /* Paranoia */ sprintf(_file, "%s%s", home, file+1); } } FILE * f = fopen(_file, "w+"); if (file != _file) free(_file); if (!f) { render_error("Failed to open file for writing."); return; } /* Go through each line and convert it back to UTF-8 */ output_file(env, f); fclose(f); /* Mark it no longer modified */ env->modified = 0; env->last_save_history = env->history; /* If there was no file name set, set one */ if (!env->file_name) { env->file_name = malloc(strlen(file) + 1); memcpy(env->file_name, file, strlen(file) + 1); } if (env->checkgitstatusonwrite) { git_examine(file); } update_title(); redraw_all(); } /** * Close the active buffer */ void close_buffer(void) { buffer_t * previous_env = env; buffer_t * new_env = buffer_close(env); if (new_env == previous_env) { /* ?? Failed to close buffer */ render_error("lolwat"); } if (left_buffer && env == left_buffer) { left_buffer = NULL; right_buffer->left = 0; right_buffer->width = global_config.term_width; right_buffer = NULL; } else if (left_buffer && env == right_buffer) { right_buffer = NULL; left_buffer->left = 0; left_buffer->width = global_config.term_width; left_buffer = NULL; } /* No more buffers, exit */ if (!new_env) { quit(NULL); } /* Set the new active buffer */ env = new_env; /* Redraw the screen */ redraw_all(); update_title(); } /** * Set the visual column the cursor should attempt to keep * when moving up and down based on where the cursor currently is. * This should happen whenever the user intentionally changes * the cursor's horizontal positioning, such as with left/right * arrow keys, word-move, search, mouse, etc. */ void set_preferred_column(void) { int c = 0; for (int i = 0; i < env->lines[env->line_no-1]->actual && i < env->col_no-1; ++i) { c += env->lines[env->line_no-1]->text[i].display_width; } env->preferred_column = c; } BIM_ACTION(cursor_down, 0, "Move the cursor one line down." )(void) { /* If this isn't already the last line... */ if (env->line_no < env->line_count) { /* Move the cursor down */ env->line_no += 1; /* Try to place the cursor horizontally at the preferred column */ int _x = 0; for (int i = 0; i < env->lines[env->line_no-1]->actual; ++i) { char_t * c = &env->lines[env->line_no-1]->text[i]; _x += c->display_width; env->col_no = i+1; if (_x > env->preferred_column) { break; } } if (env->mode == MODE_INSERT && _x <= env->preferred_column) { env->col_no = env->lines[env->line_no-1]->actual + 1; } /* * If the horizontal cursor position exceeds the width the new line, * then move the cursor left to the extent of the new line. * * If we're in insert mode, we can go one cell beyond the end of the line */ if (env->col_no > env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT)) { env->col_no = env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT); if (env->col_no == 0) env->col_no = 1; } if (env->loading) return; /* * If the screen was scrolled horizontally, unscroll it; * if it will be scrolled on this line as well, that will * be handled by place_cursor_actual */ int redraw = 0; if (env->coffset != 0) { env->coffset = 0; redraw = 1; } /* If we've scrolled past the bottom of the screen, scroll the screen */ if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - global_config.tabs_visible - global_config.cursor_padding) { env->offset += 1; /* Tell terminal to scroll */ if (global_config.can_scroll && !left_buffer) { if (!global_config.can_insert) { shift_up(1); redraw_tabbar(); } else { delete_lines_at(global_config.tabs_visible ? 2 : 1, 1); } /* A new line appears on screen at the bottom, draw it */ int l = global_config.term_height - global_config.bottom_size - global_config.tabs_visible; if (env->offset + l < env->line_count + 1) { redraw_line(env->offset + l-1); } else { draw_excess_line(l - 1); } } else { redraw_text(); } redraw_statusbar(); redraw_commandline(); place_cursor_actual(); return; } else if (redraw) { /* Otherwise, if we need to redraw because of coffset change, do that */ redraw_text(); } set_history_break(); /* Update the status bar */ redraw_statusbar(); /* Place the terminal cursor again */ place_cursor_actual(); } } BIM_ACTION(cursor_up, 0, "Move the cursor up one line." )(void) { /* If this isn't the first line already */ if (env->line_no > 1) { /* Move the cursor down */ env->line_no -= 1; /* Try to place the cursor horizontally at the preferred column */ int _x = 0; for (int i = 0; i < env->lines[env->line_no-1]->actual; ++i) { char_t * c = &env->lines[env->line_no-1]->text[i]; _x += c->display_width; env->col_no = i+1; if (_x > env->preferred_column) { break; } } if (env->mode == MODE_INSERT && _x <= env->preferred_column) { env->col_no = env->lines[env->line_no-1]->actual + 1; } /* * If the horizontal cursor position exceeds the width the new line, * then move the cursor left to the extent of the new line. * * If we're in insert mode, we can go one cell beyond the end of the line */ if (env->col_no > env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT)) { env->col_no = env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT); if (env->col_no == 0) env->col_no = 1; } if (env->loading) return; /* * If the screen was scrolled horizontally, unscroll it; * if it will be scrolled on this line as well, that will * be handled by place_cursor_actual */ int redraw = 0; if (env->coffset != 0) { env->coffset = 0; redraw = 1; } int e = (env->offset == 0) ? env->offset : env->offset + global_config.cursor_padding; if (env->line_no <= e) { env->offset -= 1; /* Tell terminal to scroll */ if (global_config.can_scroll && !left_buffer) { if (!global_config.can_insert) { shift_down(1); redraw_tabbar(); } else { insert_lines_at(global_config.tabs_visible ? 2 : 1, 1); } /* * The line at the top of the screen should always be real * so we can just call redraw_line here */ redraw_line(env->offset); } else { redraw_tabbar(); redraw_text(); } redraw_statusbar(); redraw_commandline(); place_cursor_actual(); return; } else if (redraw) { /* Otherwise, if we need to redraw because of coffset change, do that */ redraw_text(); } set_history_break(); /* Update the status bar */ redraw_statusbar(); /* Place the terminal cursor again */ place_cursor_actual(); } } BIM_ACTION(cursor_left, 0, "Move the cursor one character to the left." )(void) { if (env->col_no > 1) { env->col_no -= 1; /* Update the status bar */ redraw_statusbar(); /* Place the terminal cursor again */ place_cursor_actual(); } set_history_break(); set_preferred_column(); } BIM_ACTION(cursor_right, 0, "Move the cursor one character to the right." )(void) { /* If this isn't already the rightmost column we can reach on this line in this mode... */ if (env->col_no < env->lines[env->line_no-1]->actual + !!(env->mode == MODE_INSERT)) { env->col_no += 1; /* Update the status bar */ redraw_statusbar(); /* Place the terminal cursor again */ place_cursor_actual(); } set_history_break(); set_preferred_column(); } BIM_ACTION(cursor_home, 0, "Move the cursor to the beginning of the line." )(void) { env->col_no = 1; set_history_break(); set_preferred_column(); /* Update the status bar */ redraw_statusbar(); /* Place the terminal cursor again */ place_cursor_actual(); } BIM_ACTION(cursor_end, 0, "Move the cursor to the end of the line, or past the end in insert mode." )(void) { env->col_no = env->lines[env->line_no-1]->actual+!!(env->mode == MODE_INSERT); set_history_break(); set_preferred_column(); /* Update the status bar */ redraw_statusbar(); /* Place the terminal cursor again */ place_cursor_actual(); } BIM_ACTION(leave_insert, 0, "Leave insert modes and return to normal mode." )(void) { if (env->col_no > env->lines[env->line_no-1]->actual) { env->col_no = env->lines[env->line_no-1]->actual; if (env->col_no == 0) env->col_no = 1; set_preferred_column(); } set_history_break(); env->mode = MODE_NORMAL; redraw_commandline(); } /** * Helper for handling smart case sensitivity. */ int search_matches(uint32_t a, uint32_t b, int mode) { if (mode == 0) { return a == b; } else if (mode == 1) { return tolower(a) == tolower(b); } return 0; } int subsearch_matches(line_t * line, int j, uint32_t * needle, int ignorecase, int *len) { int k = j; uint32_t * match = needle; if (*match == '^') { if (j != 0) return 0; match++; } while (k < line->actual + 1) { if (*match == '\0') { if (len) *len = k - j; return 1; } if (*match == '$') { if (k != line->actual) return 0; match++; continue; } if (*match == '.') { if (match[1] == '*') { int greedy = !(match[2] == '?'); /* Short-circuit chained .*'s */ if (match[greedy ? 2 : 3] == '.' && match[greedy ? 3 : 4] == '*') { int _len; if (subsearch_matches(line, k, &match[greedy ? 2 : 3], ignorecase, &_len)) { if (len) *len = _len + k - j; return 1; } return 0; } int _j = greedy ? line->actual : k; int _break = -1; int _len = -1; if (!match[greedy ? 2 : 3]) { _len = greedy ? (line->actual - _j) : 0; _break = _j; } else { while (_j < line->actual + 1 && _j >= k) { int len; if (subsearch_matches(line, _j, &match[greedy ? 2 : 3], ignorecase, &len)) { _break = _j; _len = len; break; } _j += (greedy ? -1 : 1); } } if (_break != -1) { if (len) *len = (_break - j) + _len; return 1; } return 0; } else { if (k >= line->actual) return 0; match++; k++; continue; } } if (*match == '\\' && (match[1] == '$' || match[1] == '^' || match[1] == '/' || match[1] == '\\' || match[1] == '.')) { match++; } else if (*match == '\\' && match[1] == 't') { if (line->text[k].codepoint != '\t') break; match += 2; k++; continue; } if (k == line->actual) break; if (!search_matches(*match, line->text[k].codepoint, ignorecase)) break; match++; k++; } return 0; } /** * Replace text on a given line with other text. */ void perform_replacement(int line_no, uint32_t * needle, uint32_t * replacement, int col, int ignorecase, int *out_col) { line_t * line = env->lines[line_no-1]; int j = col; while (j < line->actual + 1) { int match_len; if (subsearch_matches(line,j,needle,ignorecase,&match_len)) { /* Perform replacement */ for (int i = 0; i < match_len; ++i) { line_delete(line, j+1, line_no-1); } int t = 0; for (uint32_t * r = replacement; *r; ++r) { char_t _c; _c.codepoint = *r; _c.flags = 0; _c.display_width = codepoint_width(*r); line_t * nline = line_insert(line, _c, j + t, line_no -1); if (line != nline) { env->lines[line_no-1] = nline; line = nline; } t++; } *out_col = j + t; set_modified(); return; } j++; } *out_col = -1; } #define COMMAND_HISTORY_MAX 255 unsigned char * command_history[COMMAND_HISTORY_MAX] = {NULL}; /** * Add a command to the history. If that command was * already in history, it is moved to the front of the list; * otherwise, the whole list is shifted backwards and * overflow is freed up. */ void insert_command_history(char * cmd) { /* See if this is already in the history. */ size_t amount_to_shift = COMMAND_HISTORY_MAX - 1; for (int i = 0; i < COMMAND_HISTORY_MAX && command_history[i]; ++i) { if (!strcmp((char*)command_history[i], cmd)) { free(command_history[i]); amount_to_shift = i; break; } } /* Remove last entry that will roll off the stack */ if (amount_to_shift == COMMAND_HISTORY_MAX - 1) { if (command_history[COMMAND_HISTORY_MAX-1]) free(command_history[COMMAND_HISTORY_MAX-1]); } /* Roll the history */ memmove(&command_history[1], &command_history[0], sizeof(char *) * (amount_to_shift)); command_history[0] = (unsigned char*)strdup(cmd); } static uint32_t term_colors[] = { 0x000000, 0xcc0000, 0x3e9a06, 0xc4a000, 0x3465a4, 0x75507b, 0x06989a, 0xeeeeec, 0x555753, 0xef2929, 0x8ae234, 0xfce94f, 0x729fcf, 0xad7fa8, 0x34e2e2, 0xFFFFFF, 0x000000, 0x00005f, 0x000087, 0x0000af, 0x0000d7, 0x0000ff, 0x005f00, 0x005f5f, 0x005f87, 0x005faf, 0x005fd7, 0x005fff, 0x008700, 0x00875f, 0x008787, 0x0087af, 0x0087d7, 0x0087ff, 0x00af00, 0x00af5f, 0x00af87, 0x00afaf, 0x00afd7, 0x00afff, 0x00d700, 0x00d75f, 0x00d787, 0x00d7af, 0x00d7d7, 0x00d7ff, 0x00ff00, 0x00ff5f, 0x00ff87, 0x00ffaf, 0x00ffd7, 0x00ffff, 0x5f0000, 0x5f005f, 0x5f0087, 0x5f00af, 0x5f00d7, 0x5f00ff, 0x5f5f00, 0x5f5f5f, 0x5f5f87, 0x5f5faf, 0x5f5fd7, 0x5f5fff, 0x5f8700, 0x5f875f, 0x5f8787, 0x5f87af, 0x5f87d7, 0x5f87ff, 0x5faf00, 0x5faf5f, 0x5faf87, 0x5fafaf, 0x5fafd7, 0x5fafff, 0x5fd700, 0x5fd75f, 0x5fd787, 0x5fd7af, 0x5fd7d7, 0x5fd7ff, 0x5fff00, 0x5fff5f, 0x5fff87, 0x5fffaf, 0x5fffd7, 0x5fffff, 0x870000, 0x87005f, 0x870087, 0x8700af, 0x8700d7, 0x8700ff, 0x875f00, 0x875f5f, 0x875f87, 0x875faf, 0x875fd7, 0x875fff, 0x878700, 0x87875f, 0x878787, 0x8787af, 0x8787d7, 0x8787ff, 0x87af00, 0x87af5f, 0x87af87, 0x87afaf, 0x87afd7, 0x87afff, 0x87d700, 0x87d75f, 0x87d787, 0x87d7af, 0x87d7d7, 0x87d7ff, 0x87ff00, 0x87ff5f, 0x87ff87, 0x87ffaf, 0x87ffd7, 0x87ffff, 0xaf0000, 0xaf005f, 0xaf0087, 0xaf00af, 0xaf00d7, 0xaf00ff, 0xaf5f00, 0xaf5f5f, 0xaf5f87, 0xaf5faf, 0xaf5fd7, 0xaf5fff, 0xaf8700, 0xaf875f, 0xaf8787, 0xaf87af, 0xaf87d7, 0xaf87ff, 0xafaf00, 0xafaf5f, 0xafaf87, 0xafafaf, 0xafafd7, 0xafafff, 0xafd700, 0xafd75f, 0xafd787, 0xafd7af, 0xafd7d7, 0xafd7ff, 0xafff00, 0xafff5f, 0xafff87, 0xafffaf, 0xafffd7, 0xafffff, 0xd70000, 0xd7005f, 0xd70087, 0xd700af, 0xd700d7, 0xd700ff, 0xd75f00, 0xd75f5f, 0xd75f87, 0xd75faf, 0xd75fd7, 0xd75fff, 0xd78700, 0xd7875f, 0xd78787, 0xd787af, 0xd787d7, 0xd787ff, 0xd7af00, 0xd7af5f, 0xd7af87, 0xd7afaf, 0xd7afd7, 0xd7afff, 0xd7d700, 0xd7d75f, 0xd7d787, 0xd7d7af, 0xd7d7d7, 0xd7d7ff, 0xd7ff00, 0xd7ff5f, 0xd7ff87, 0xd7ffaf, 0xd7ffd7, 0xd7ffff, 0xff0000, 0xff005f, 0xff0087, 0xff00af, 0xff00d7, 0xff00ff, 0xff5f00, 0xff5f5f, 0xff5f87, 0xff5faf, 0xff5fd7, 0xff5fff, 0xff8700, 0xff875f, 0xff8787, 0xff87af, 0xff87d7, 0xff87ff, 0xffaf00, 0xffaf5f, 0xffaf87, 0xffafaf, 0xffafd7, 0xffafff, 0xffd700, 0xffd75f, 0xffd787, 0xffd7af, 0xffd7d7, 0xffd7ff, 0xffff00, 0xffff5f, 0xffff87, 0xffffaf, 0xffffd7, 0xffffff, 0x080808, 0x121212, 0x1c1c1c, 0x262626, 0x303030, 0x3a3a3a, 0x444444, 0x4e4e4e, 0x585858, 0x626262, 0x6c6c6c, 0x767676, 0x808080, 0x8a8a8a, 0x949494, 0x9e9e9e, 0xa8a8a8, 0xb2b2b2, 0xbcbcbc, 0xc6c6c6, 0xd0d0d0, 0xdadada, 0xe4e4e4, 0xeeeeee, }; /** * Convert a color setting from terminal format * to a hexadecimal color code and add it to the current * buffer. This is used for HTML conversion, but could * possibly be used for other purposes. */ static void html_convert_color(const char * color_string) { char tmp[100]; if (!strncmp(color_string,"2;",2)) { /* 24-bit color */ int red, green, blue; sscanf(color_string+2,"%d;%d;%d",&red,&green,&blue); sprintf(tmp, "#%02x%02x%02x;", red,green,blue); } else if (!strncmp(color_string,"5;",2)) { /* 256 colors; needs lookup table */ int index; sscanf(color_string+2,"%d",&index); sprintf(tmp,"#%06x;", (unsigned int)term_colors[(index >= 0 && index <= 255) ? index : 0]); } else { /* 16 colors; needs lookup table */ int index; uint32_t color; sscanf(color_string+1,"%d",&index); if (index >= 10) { index -= 10; color = term_colors[index+8]; } else if (index == 9) { color = term_colors[0]; } else { color = term_colors[index]; } sprintf(tmp,"#%06x;", (unsigned int)color); } add_string(tmp); char * italic = strstr(color_string,";3"); if (italic && italic[2] == '\0') { add_string(" font-style: oblique;"); } char * bold = strstr(color_string,";1"); if (bold && bold[2] == '\0') { add_string(" font-weight: bold;"); } char * underline = strstr(color_string,";4"); if (underline && underline[2] == '\0') { add_string(" font-decoration: underline;"); } } int convert_to_html(void) { buffer_t * old = env; env = buffer_new(); setup_buffer(env); env->loading = 1; add_string("<!doctype html>\n"); add_string("<html>\n"); add_string(" <head>\n"); add_string(" <meta charset=\"UTF-8\">\n"); if (old->file_name) { add_string(" <title>"); add_string(file_basename(old->file_name)); add_string("</title>\n"); } add_string(" <style>\n"); add_string(" body {\n"); add_string(" margin: 0;\n"); add_string(" -webkit-text-size-adjust: none;\n"); add_string(" counter-reset: line-no;\n"); add_string(" background-color: "); /* Convert color */ html_convert_color(COLOR_BG); add_string("\n"); add_string(" }\n"); add_string(" .ul { text-decoration: underline; }\n"); for (int i = 0; i < 15; ++i) { /* For each of the relevant flags... */ char tmp[20]; sprintf(tmp," .s%d { color: ", i); add_string(tmp); /* These are special */ if (i == FLAG_NOTICE) { html_convert_color(COLOR_SEARCH_FG); add_string(" background-color: "); html_convert_color(COLOR_SEARCH_BG); } else if (i == FLAG_ERROR) { html_convert_color(COLOR_ERROR_FG); add_string(" background-color: "); html_convert_color(COLOR_ERROR_BG); } else { html_convert_color(flag_to_color(i)); } add_string("}\n"); } add_string(" pre {\n"); add_string(" margin: 0;\n"); add_string(" white-space: pre-wrap;\n"); add_string(" font-family: \"DejaVu Sans Mono\", Courier, monospace;\n"); add_string(" font-size: 10pt;\n"); add_string(" }\n"); add_string(" pre>span {\n"); add_string(" display: inline-block;\n"); add_string(" width: 100%;\n"); add_string(" }\n"); add_string(" pre>span>a::before {\n"); add_string(" counter-increment: line-no;\n"); add_string(" content: counter(line-no);\n"); add_string(" padding-right: 1em;\n"); add_string(" width: 3em;\n"); add_string(" display: inline-block;\n"); add_string(" text-align: right;\n"); add_string(" background-color: "); html_convert_color(COLOR_NUMBER_BG); add_string("\n"); add_string(" color: "); html_convert_color(COLOR_NUMBER_FG); add_string("\n"); add_string(" }\n"); add_string(" pre>span:target {\n"); add_string(" background-color: "); html_convert_color(COLOR_ALT_BG); add_string("\n"); add_string(" }\n"); add_string(" pre>span:target>a::before {\n"); add_string(" background-color: "); html_convert_color(COLOR_NUMBER_FG); add_string("\n"); add_string(" color: "); html_convert_color(COLOR_NUMBER_BG); add_string("\n"); add_string(" }\n"); for (int i = 1; i <= env->tabstop; ++i) { char tmp[20]; sprintf(tmp, ".tab%d", i); add_string(" "); add_string(tmp); add_string(">span {\n"); add_string(" display: inline-block;\n"); add_string(" overflow: hidden;\n"); add_string(" width: 0;\n"); add_string(" height: 0;\n"); add_string(" }\n"); add_string(" "); add_string(tmp); add_string("::after {\n"); add_string(" content: '»"); for (int j = 1; j < i; ++j) { add_string("·"); } add_string("';\n"); add_string(" background-color: "); html_convert_color(COLOR_ALT_BG); add_string("\n"); add_string(" color: "); html_convert_color(COLOR_ALT_FG); add_string("\n"); add_string(" }\n"); } add_string(" .space {\n"); add_string(" border-left: 1px solid "); html_convert_color(COLOR_ALT_FG); add_string("\n"); add_string(" margin-left: -1px;\n"); add_string(" }\n"); add_string(" </style>\n"); add_string(" </head>\n"); add_string(" <body><pre>\n"); for (int i = 0; i < old->line_count; ++i) { char tmp[100]; sprintf(tmp, "<span id=\"L%d\"><a href=\"#L%d\"></a>", i+1, i+1); add_string(tmp); int last_flag = -1; int opened = 0; int all_spaces = 1; for (int j = 0; j < old->lines[i]->actual; ++j) { char_t c = old->lines[i]->text[j]; if (c.codepoint != ' ') all_spaces = 0; if (last_flag == -1 || last_flag != (c.flags & 0x1F)) { if (opened) add_string("</span>"); opened = 1; char tmp[100]; sprintf(tmp, "<span class=\"s%d%s\">", c.flags & FLAG_MASK_COLORS, (c.flags & FLAG_UNDERLINE) ? " ul" : ""); add_string(tmp); last_flag = (c.flags & 0x1F); } if (c.codepoint == '<') { add_string("<"); } else if (c.codepoint == '>') { add_string(">"); } else if (c.codepoint == '&') { add_string("&"); } else if (c.codepoint == '\t') { char tmp[100]; sprintf(tmp, "<span class=\"tab%d\"><span> </span></span>",c.display_width); add_string(tmp); } else if (j > 0 && c.codepoint == ' ' && all_spaces && !(j % old->tabstop)) { add_string("<span class=\"space\"> </span>"); } else { char tmp[7] = {0}; /* Max six bytes, use 7 to ensure last is always nil */ to_eight(c.codepoint, tmp); add_string(tmp); } } if (opened) { add_string("</span>"); } else { add_string("<wbr>"); } add_string("</span>\n"); } add_string("</pre></body>\n"); add_string("</html>\n"); env->loading = 0; env->modified = 1; if (old->file_name) { char * base = file_basename(old->file_name); char * tmp = malloc(strlen(base) + 5); *tmp = '\0'; strcat(tmp, base); strcat(tmp, ".htm"); env->file_name = tmp; } for (int i = 0; i < env->line_count; ++i) { recalculate_tabs(env->lines[i]); } env->syntax = match_syntax(".htm"); schedule_complete_recalc(); return 0; } /** * Based on vim's :TOhtml * Convert syntax-highlighted buffer contents to HTML. */ BIM_COMMAND(tohtml,"tohtml","Convert the document to an HTML representation with syntax highlighting.") { convert_to_html(); redraw_all(); return 0; } BIM_ALIAS("TOhtml",tohtml,tohtml) int _prefix_command_run_script(char * cmd) { if (env->mode == MODE_LINE_SELECTION) { int range_top, range_bot; range_top = env->start_line < env->line_no ? env->start_line : env->line_no; range_bot = env->start_line < env->line_no ? env->line_no : env->start_line; int in[2]; pipe(in); int out[2]; pipe(out); int child = fork(); /* Open child process and set up pipes */ if (child == 0) { FILE * dev_null = fopen("/dev/null","w"); /* for stderr */ close(out[0]); close(in[1]); dup2(out[1], STDOUT_FILENO); dup2(in[0], STDIN_FILENO); dup2(fileno(dev_null), STDERR_FILENO); system(&cmd[1]); /* Yes we can just do this */ exit(1); } else if (child < 0) { render_error("Failed to fork"); return 1; } close(out[1]); close(in[0]); /* Write lines to child process */ FILE * f = fdopen(in[1],"w"); for (int i = range_top; i <= range_bot; ++i) { line_t * line = env->lines[i-1]; for (int j = 0; j < line->actual; j++) { char_t c = line->text[j]; if (c.codepoint == 0) { char buf[1] = {0}; fwrite(buf, 1, 1, f); } else { char tmp[8] = {0}; int i = to_eight(c.codepoint, tmp); fwrite(tmp, i, 1, f); } } fputc('\n', f); } fclose(f); close(in[1]); /* Read results from child process into a new buffer */ FILE * result = fdopen(out[0],"r"); buffer_t * old = env; env = buffer_new(); setup_buffer(env); env->loading = 1; uint8_t buf[BLOCK_SIZE]; state = 0; while (!feof(result) && !ferror(result)) { size_t r = fread(buf, 1, BLOCK_SIZE, result); add_buffer(buf, r); } if (env->line_no && env->lines[env->line_no-1] && env->lines[env->line_no-1]->actual == 0) { env->lines = remove_line(env->lines, env->line_no-1); } fclose(result); env->loading = 0; /* Return to the original buffer and replace the selected lines with the output */ buffer_t * new = env; env = old; for (int i = range_top; i <= range_bot; ++i) { /* Remove the existing lines */ env->lines = remove_line(env->lines, range_top-1); } for (int i = 0; i < new->line_count; ++i) { /* Add the new lines */ env->lines = add_line(env->lines, range_top + i - 1); replace_line(env->lines, range_top + i - 1, new->lines[i]); recalculate_tabs(env->lines[range_top+i-1]); } env->modified = 1; /* Close the temporary buffer */ buffer_close(new); } else { /* Reset and draw some line feeds */ reset(); printf("\n\n"); /* Set buffered for shell application */ set_buffered(); /* Call the shell and wait for completion */ system(&cmd[1]); /* Return to the editor, wait for user to press enter. */ set_unbuffered(); printf("\n\nPress ENTER to continue."); int c; while ((c = bim_getch(), c != ENTER_KEY && c != LINE_FEED)); /* Redraw the screen */ redraw_all(); } /* Done processing command */ return 0; } int replace_text(int range_top, int range_bot, char divider, char * needle) { char * c = needle; char * replacement = NULL; char * options = ""; while (*c) { if (*c == divider) { *c = '\0'; replacement = c + 1; break; } c++; } if (!replacement) { render_error("nothing to replace with"); return 1; } c = replacement; while (*c) { if (*c == divider) { *c = '\0'; options = c + 1; break; } c++; } int global = 0; int case_insensitive = 0; /* Parse options */ while (*options) { switch (*options) { case 'g': global = 1; break; case 'i': case_insensitive = 1; break; } options++; } uint32_t * needle_c = malloc(sizeof(uint32_t) * (strlen(needle) + 1)); uint32_t * replacement_c = malloc(sizeof(uint32_t) * (strlen(replacement) + 1)); { int i = 0; uint32_t c, state = 0; for (char * cin = needle; *cin; cin++) { if (!decode(&state, &c, *cin)) { needle_c[i] = c; i++; } else if (state == UTF8_REJECT) { state = 0; } } needle_c[i] = 0; i = 0; c = 0; state = 0; for (char * cin = replacement; *cin; cin++) { if (!decode(&state, &c, *cin)) { replacement_c[i] = c; i++; } else if (state == UTF8_REJECT) { state = 0; } } replacement_c[i] = 0; } int replacements = 0; for (int line = range_top; line <= range_bot; ++line) { int col = 0; while (col != -1) { perform_replacement(line, needle_c, replacement_c, col, case_insensitive, &col); if (col != -1) replacements++; if (!global) break; } } free(needle_c); free(replacement_c); if (replacements) { render_status_message("replaced %d instance%s of %s", replacements, replacements == 1 ? "" : "s", needle); set_history_break(); redraw_text(); } else { render_error("Pattern not found: %s", needle); } return 0; } BIM_PREFIX_COMMAND(repsome,"s","Perform a replacement over selected lines") { int range_top, range_bot; if (env->mode == MODE_LINE_SELECTION) { range_top = env->start_line < env->line_no ? env->start_line : env->line_no; range_bot = env->start_line < env->line_no ? env->line_no : env->start_line; } else { range_top = env->line_no; range_bot = env->line_no; } return replace_text(range_top, range_bot, cmd[1], &cmd[2]); } BIM_PREFIX_COMMAND(repall,"%s","Perform a replacement over the entire file.") { return replace_text(1, env->line_count, cmd[2], &cmd[3]); } BIM_COMMAND(e,"e","Open a file") { if (argc > 1) { /* This actually opens a new tab */ open_file(argv[1]); update_title(); } else { if (env->modified) { render_error("File is modified, can not reload."); return 1; } buffer_t * old_env = env; open_file(env->file_name); buffer_t * new_env = env; env = old_env; #define SWAP(T,a,b) do { T x = a; a = b; b = x; } while (0) SWAP(line_t **, env->lines, new_env->lines); SWAP(int, env->line_count, new_env->line_count); SWAP(int, env->line_avail, new_env->line_avail); SWAP(history_t *, env->history, new_env->history); buffer_close(new_env); /* Should probably also free, this needs editing. */ schedule_complete_recalc(); redraw_all(); } return 0; } BIM_COMMAND(tabnew,"tabnew","Open a new tab") { if (argc > 1) { open_file(argv[1]); update_title(); } else { env = buffer_new(); setup_buffer(env); redraw_all(); update_title(); } return 0; } BIM_COMMAND(w,"w","Write a file") { /* w: write file */ if (argc > 1) { write_file(argv[1]); } else { write_file(env->file_name); } return 0; } BIM_COMMAND(wq,"wq","Write and close buffer") { write_file(env->file_name); close_buffer(); return 0; } BIM_COMMAND(history,"history","Display command history") { render_commandline_message(""); /* To clear command line */ for (int i = COMMAND_HISTORY_MAX; i > 1; --i) { if (command_history[i-1]) render_commandline_message("%d:%s\n", i-1, command_history[i-1]); } render_commandline_message("\n"); redraw_tabbar(); redraw_commandline(); pause_for_key(); return 0; } BIM_COMMAND(q,"q","Close buffer") { if (left_buffer && left_buffer == right_buffer) { unsplit(); return 0; } if (env->modified) { render_error("No write since last change. Use :q! to force exit."); } else { close_buffer(); } update_title(); return 0; } BIM_COMMAND(qbang,"q!","Force close buffer") { close_buffer(); update_title(); return 0; } BIM_COMMAND(qa,"qa","Try to close all buffers") { try_quit(); return 0; } BIM_ALIAS("qall",qall,qa) BIM_COMMAND(qabang,"qa!","Force exit") { /* Forcefully exit editor */ while (buffers_len) { buffer_close(buffers[0]); } quit(NULL); return 1; /* doesn't return */ } BIM_COMMAND(tabp,"tabp","Previous tab") { previous_tab(); update_title(); return 0; } BIM_COMMAND(tabn,"tabn","Next tab") { next_tab(); update_title(); return 0; } BIM_COMMAND(tabm,"tabm","Move the current tab to a new index") { /* Figure out the current index */ int i = 0; for (; i < buffers_len; i++) { if (buffers[i] == env) break; } if (i == buffers_len) { render_status_message("(invalid state?)"); return 1; } if (argc < 2) { render_status_message("tab = %d", i); return 1; } int newIndex = atoi(argv[1]); if (newIndex == i) { return 0; } /* Okay, this is stupid, but, remove the buffer */ memmove(&buffers[i], &buffers[i+1], sizeof(*buffers) * (buffers_len - i -1)); /* Then make space at the destination */ memmove(&buffers[newIndex+1], &buffers[newIndex], sizeof(*buffers) * (buffers_len - newIndex -1)); buffers[newIndex] = env; redraw_tabbar(); update_title(); return 0; } BIM_COMMAND(tab,"tab", "Open a specific tab") { if (argc < 2) return bim_command_tabm("tabm", argc, argv); int i = atoi(argv[1]); if (i < 0 || i > buffers_len) { render_error("Invalid tab index"); return 1; } env = buffers[i]; if (left_buffer && (left_buffer != env && right_buffer != env)) unsplit(); redraw_all(); update_title(); return 0; } BIM_COMMAND(tabindicator,"tabindicator","Set the tab indicator") { if (argc < 2) { render_status_message("tabindicator=%s", global_config.tab_indicator); return 0; } if (!global_config.can_unicode && strlen(argv[1]) != 1) return 0; if (display_width_of_string(argv[1]) != 1) { render_error("Can't set '%s' as indicator, must be one cell wide.", argv[1]); return 1; } if (global_config.tab_indicator) free(global_config.tab_indicator); global_config.tab_indicator = strdup(argv[1]); return 0; } BIM_COMMAND(spaceindicator,"spaceindicator","Set the space indicator") { if (argc < 2) { render_status_message("spaceindicator=%s", global_config.space_indicator); return 0; } if (!global_config.can_unicode && strlen(argv[1]) != 1) return 0; if (display_width_of_string(argv[1]) != 1) { render_error("Can't set '%s' as indicator, must be one cell wide.", argv[1]); return 1; } if (global_config.space_indicator) free(global_config.space_indicator); global_config.space_indicator = strdup(argv[1]); return 0; } BIM_COMMAND(global_git,"global.git","Show or change the default status of git integration") { if (argc < 2) { render_status_message("global.git=%d", global_config.check_git); } else { global_config.check_git = !!atoi(argv[1]); } return 0; } BIM_COMMAND(git,"git","Show or change status of git integration") { if (!env) { render_error("requires environment (did you mean global.git?)"); return 1; } if (argc < 2) { render_status_message("git=%d", env->checkgitstatusonwrite); } else { env->checkgitstatusonwrite = !!atoi(argv[1]); if (env->checkgitstatusonwrite && !env->modified && env->file_name) { git_examine(env->file_name); redraw_text(); } } return 0; } BIM_COMMAND(colorgutter,"colorgutter","Show or change status of gutter colorization for unsaved modifications") { if (argc < 2) { render_status_message("colorgutter=%d", global_config.color_gutter); } else { global_config.color_gutter = !!atoi(argv[1]); redraw_text(); } return 0; } BIM_COMMAND(indent,"indent","Enable smart indentation") { env->indent = 1; redraw_statusbar(); return 0; } BIM_COMMAND(noindent,"noindent","Disable smart indentation") { env->indent = 0; redraw_statusbar(); return 0; } /* TODO: global.maxcolumn */ BIM_COMMAND(maxcolumn,"maxcolumn","Highlight past the given column to indicate maximum desired line length") { if (argc < 2) { render_status_message("maxcolumn=%d",env->maxcolumn); return 0; } env->maxcolumn = atoi(argv[1]); redraw_text(); return 0; } BIM_COMMAND(cursorcolumn,"cursorcolumn","Show the visual column offset of the cursor.") { render_status_message("cursorcolumn=%d", env->preferred_column); return 0; } BIM_COMMAND(noh,"noh","Clear search term") { if (global_config.search) { free(global_config.search); global_config.search = NULL; for (int i = 0; i < env->line_count; ++i) { for (int j = 0; j < env->lines[i]->actual; ++j) { env->lines[i]->text[j].flags &= ~(FLAG_SEARCH); } } redraw_text(); } return 0; } BIM_COMMAND(help,"help","Show help text.") { if (argc < 2) { render_commandline_message(""); /* To clear command line */ render_commandline_message("\n"); render_commandline_message(" \033[1mbim - a text editor \033[22m\n"); render_commandline_message("\n"); render_commandline_message(" Available commands:\n"); render_commandline_message(" Quit with \033[3m:q\033[23m, \033[3m:qa\033[23m, \033[3m:q!\033[23m, \033[3m:qa!\033[23m\n"); render_commandline_message(" Write out with \033[3m:w \033[4mfile\033[24;23m\n"); render_commandline_message(" Set syntax with \033[3m:syntax \033[4mlanguage\033[24;23m\n"); render_commandline_message(" Open a new tab with \033[3m:e \033[4mpath/to/file\033[24;23m\n"); render_commandline_message(" \033[3m:tabn\033[23m and \033[3m:tabp\033[23m can be used to switch tabs\n"); render_commandline_message(" Set the color scheme with \033[3m:theme \033[4mtheme\033[24;23m\n"); render_commandline_message(" Set the behavior of the tab key with \033[3m:tabs\033[23m or \033[3m:spaces\033[23m\n"); render_commandline_message(" Set tabstop with \033[3m:tabstop \033[4mwidth\033[24;23m\n"); render_commandline_message("\n"); render_commandline_message(" Bim %s%s\n", BIM_VERSION, BIM_BUILD_DATE); render_commandline_message(" %s\n", BIM_COPYRIGHT); render_commandline_message("\n"); } else { int found = 0; for (struct command_def * c = regular_commands; !found && regular_commands && c->name; ++c) { if (!strcmp(c->name, argv[1])) { render_commandline_message(""); /* To clear command line */ render_commandline_message("Help description for `%s`:\n", c->name); render_commandline_message(" %s\n", c->description); found = 1; break; } } for (struct command_def * c = prefix_commands; !found && prefix_commands && c->name; ++c) { if (!strcmp(c->name, argv[1])) { render_commandline_message(""); /* To clear command line */ render_commandline_message("Help description for `%s`:\n", c->name); render_commandline_message(" %s\n", c->description); found = 1; break; } } if (!found) { render_error("Unknown command: %s", argv[1]); return 1; } } /* Redrawing the tabbar makes it look like we just shifted the whole view up */ redraw_tabbar(); redraw_commandline(); /* Wait for a character so we can redraw the screen before continuing */ pause_for_key(); return 0; } BIM_COMMAND(version,"version","Show version information.") { render_status_message("Bim %s%s", BIM_VERSION, BIM_BUILD_DATE); return 0; } BIM_COMMAND(theme,"theme","Set color theme") { if (argc < 2) { render_status_message("theme=%s", current_theme); } else { for (struct theme_def * d = themes; themes && d->name; ++d) { if (!strcmp(argv[1], d->name)) { ptrdiff_t before = krk_currentThread.stackTop - krk_currentThread.stack; krk_push(OBJECT_VAL(d->callable)); KrkValue result = krk_callStack(0); krk_currentThread.stackTop = krk_currentThread.stack + before; if (IS_NONE(result) && (krk_currentThread.flags & KRK_THREAD_HAS_EXCEPTION)) { render_error("Exception occurred in theme: %s", AS_INSTANCE(krk_currentThread.currentException)->_class->name->chars); krk_dumpTraceback(); int key = 0; while ((key = bim_getkey(DEFAULT_KEY_WAIT)) == KEY_TIMEOUT); } redraw_all(); return 0; } } } return 0; } BIM_ALIAS("colorscheme",colorscheme,theme) BIM_COMMAND(splitpercent,"splitpercent","Display or change view split") { if (argc < 2) { render_status_message("splitpercent=%d", global_config.split_percent); return 0; } else { global_config.split_percent = atoi(argv[1]); if (left_buffer) { update_split_size(); redraw_all(); } } return 0; } BIM_COMMAND(split,"split","Split the current view.") { buffer_t * original = env; if (argc > 1) { int is_not_number = 0; for (char * c = argv[1]; *c; ++c) is_not_number |= !isdigit(*c); if (is_not_number) { /* Open a file for the new split */ open_file(argv[1]); right_buffer = buffers[buffers_len-1]; } else { /* Use an existing buffer for the new split */ int other = atoi(argv[1]); if (other >= buffers_len || other < 0) { render_error("Invalid buffer number: %d", other); return 1; } right_buffer = buffers[other]; } } else { /* Use the current buffer for the new split */ right_buffer = original; } left_buffer = original; update_split_size(); redraw_all(); return 0; } BIM_COMMAND(unsplit,"unsplit","Show only one buffer on screen") { unsplit(); return 0; } BIM_COMMAND(horizontalscrolling,"horizontalscrolling","Set the horizontal scrolling mode") { if (argc < 2) { render_status_message("horizontalscrolling=%d", global_config.horizontal_shift_scrolling); return 0; } else { global_config.horizontal_shift_scrolling = !!atoi(argv[1]); redraw_all(); } return 0; } BIM_COMMAND(syntax,"syntax","Show or set the active syntax highlighter") { if (argc < 2) { render_status_message("syntax=%s", env->syntax ? env->syntax->name : "none"); } else { set_syntax_by_name(argv[1]); } return 0; } BIM_COMMAND(recalc,"recalc","Recalculate syntax for the entire file.") { schedule_complete_recalc(); redraw_all(); return 0; } BIM_COMMAND(tabstop,"tabstop","Show or set the tabstop (width of an indentation unit)") { if (argc < 2) { render_status_message("tabstop=%d", env->tabstop); } else { int t = atoi(argv[1]); if (t > 0 && t < 12) { env->tabstop = t; for (int i = 0; i < env->line_count; ++i) { recalculate_tabs(env->lines[i]); } redraw_all(); } else { render_error("Invalid tabstop: %s", argv[1]); } } return 0; } BIM_COMMAND(spaces,"spaces","Use spaces for indentation") { env->tabs = 0; if (argc > 1) { bim_command_tabstop("tabstop", argc, argv); } redraw_statusbar(); return 0; } BIM_COMMAND(tabs,"tabs","Use tabs for indentation") { env->tabs = 1; if (argc > 1) { bim_command_tabstop("tabstop", argc, argv); } redraw_statusbar(); return 0; } BIM_COMMAND(clearyear,"clearyank","Clear the yank buffer") { if (global_config.yanks) { for (unsigned int i = 0; i < global_config.yank_count; ++i) { free(global_config.yanks[i]); } free(global_config.yanks); global_config.yanks = NULL; global_config.yank_count = 0; redraw_statusbar(); } return 0; } BIM_COMMAND(padding,"padding","Show or set cursor padding when scrolling vertically") { if (argc < 2) { render_status_message("padding=%d", global_config.cursor_padding); } else { global_config.cursor_padding = atoi(argv[1]); if (env) { place_cursor_actual(); } } return 0; } BIM_COMMAND(smartcase,"smartcase","Show or set the status of the smartcase search option") { if (argc < 2) { render_status_message("smartcase=%d", global_config.smart_case); } else { global_config.smart_case = atoi(argv[1]); if (env) place_cursor_actual(); } return 0; } BIM_COMMAND(hlparen,"hlparen","Show or set the configuration option to highlight matching braces") { if (argc < 2) { render_status_message("hlparen=%d", global_config.highlight_parens); } else { global_config.highlight_parens = atoi(argv[1]); if (env) { for (int i = 0; i < env->line_count; ++i) { for (int j = 0; j < env->lines[i]->actual; ++j) { env->lines[i]->text[j].flags &= (~FLAG_SELECT); } } redraw_text(); place_cursor_actual(); } } return 0; } BIM_COMMAND(hlcurrent,"hlcurrent","Show or set the configuration option to highlight the current line") { if (argc < 2) { render_status_message("hlcurrent=%d", global_config.highlight_current_line); } else { global_config.highlight_current_line = atoi(argv[1]); if (env) { if (!global_config.highlight_current_line) { for (int i = 0; i < env->line_count; ++i) { env->lines[i]->is_current = 0; } } redraw_text(); place_cursor_actual(); } } return 0; } BIM_COMMAND(crnl,"crnl","Show or set the line ending mode") { if (argc < 2) { render_status_message("crnl=%d", env->crnl); } else { env->crnl = !!atoi(argv[1]); redraw_statusbar(); } return 0; } BIM_COMMAND(global_numbers,"global.numbers","Set whether numbers are displayed by default") { if (argc < 2) { render_status_message("global.numbers=%d", global_config.numbers); } else { global_config.numbers = !!atoi(argv[1]); redraw_all(); } return 0; } BIM_COMMAND(global_statusbar,"global.statusbar","Show or set whether to display the statusbar") { if (argc < 2) { render_status_message("global.statusbar=%d",!global_config.hide_statusbar); } else { global_config.hide_statusbar = !atoi(argv[1]); global_config.bottom_size = global_config.hide_statusbar ? 1 : 2; redraw_all(); } return 0; } BIM_COMMAND(global_search_wraps,"wrapsearch","Enable search wrapping around from top or bottom") { if (argc < 2) { render_status_message("wrapsearch=%d",global_config.search_wraps); } else { global_config.search_wraps = !!atoi(argv[1]); } return 0; } BIM_COMMAND(smartcomplete,"smartcomplete","Enable autocompletion while typing") { if (argc < 2) { render_status_message("smartcomplete=%d",global_config.smart_complete); } else { global_config.smart_complete = !!atoi(argv[1]); } return 0; } BIM_COMMAND(global_autohide_tabs,"global.autohidetabs","Whether to show the tab bar when there is only one tab") { if (argc < 2) { render_status_message("global.autohidetabs=%d", global_config.autohide_tabs); } else { global_config.autohide_tabs = !!atoi(argv[1]); global_config.tabs_visible = (!global_config.autohide_tabs) || (buffers_len > 1); redraw_all(); } return 0; } BIM_COMMAND(numbers,"numbers","Show or set the display of line numbers") { if (argc < 2) { render_status_message("numbers=%d", env->numbers); } else { env->numbers = !!atoi(argv[1]); redraw_all(); } return 0; } BIM_COMMAND(relativenumbers,"relativenumbers","Show or set the display of relative line numbers") { if (argc < 2) { render_status_message("relativenumber=%d", global_config.relative_lines); } else { global_config.relative_lines = atoi(argv[1]); if (env) { if (!global_config.relative_lines) { for (int i = 0; i < env->line_count; ++i) { env->lines[i]->is_current = 0; } } redraw_text(); place_cursor_actual(); } } return 0; } BIM_COMMAND(buffers,"buffers","Show the open buffers") { for (int i = 0; i < buffers_len; ++i) { render_commandline_message("%d: %s\n", i, buffers[i]->file_name ? buffers[i]->file_name : "(no name)"); } redraw_tabbar(); redraw_commandline(); pause_for_key(); return 0; } BIM_COMMAND(keyname,"keyname","Press and key and get its name.") { int c; render_commandline_message("(press a key)"); while ((c = bim_getkey(DEFAULT_KEY_WAIT)) == KEY_TIMEOUT); render_commandline_message("%d = %s", c, name_from_key(c)); return 0; } int isSubstitutionSymbol(int c) { if (c >= '!' && c <= '/') return 1; if (c >= ':' && c <= '@') return 1; if (c >= '[' && c <= '`') return 1; if (c >= '{' && c <= '~') return 1; return 0; } int alldigits(const char * c) { while (*c) { if (!isdigit(*c)) return 0; c++; } return 1; } /** * Process a user command. */ int process_krk_command(const char * cmd, KrkValue * outVal); int process_command(char * cmd) { if (cmd[0] == '-' && alldigits(&cmd[1])) { goto_line(env->line_no-atoi(&cmd[1])); return 0; } else if (cmd[0] == '+' && alldigits(&cmd[1])) { goto_line(env->line_no+atoi(&cmd[1])); return 0; } else if (alldigits(cmd)) { goto_line(atoi(cmd)); return 0; } else if (cmd[0] == '!') { return _prefix_command_run_script(cmd); } else if (cmd[0] == 's' && isSubstitutionSymbol(cmd[1])) { return bim_command_repsome(cmd, 0, NULL); } else if (cmd[0] == '%' && cmd[1] == 's') { return bim_command_repall(cmd, 0, NULL); } /* See if it's a bim command in the classic format */ { char * argv[3] = {NULL, NULL, NULL}; int argc = !!(*cmd); char cmd_name[512] = {0}; for (char * c = (char*)cmd; *c; ++c) { if (c-cmd == 511) break; if (*c == ' ') { cmd_name[c-cmd] = '\0'; while (*c == ' ') c++; argv[1] = c; if (*argv[1]) argc++; break; } cmd_name[c-cmd] = *c; } argv[0] = cmd_name; argv[argc] = NULL; for (struct command_def * c = regular_commands; regular_commands && c->name; ++c) { if (!strcmp(argv[0], c->name)) { krk_resetStack(); return c->command((char*)cmd, argc, argv); } } } int retval = process_krk_command(cmd, NULL); return retval; } struct Candidate { char * text; int type; }; /** * Wrap strcmp for use with qsort. */ int compare_candidate(const void * a, const void * b) { const struct Candidate *_a = a; const struct Candidate *_b = b; return strcmp(_a->text, _b->text); } /** * List of file extensions to ignore when tab completing. */ const char * tab_complete_ignore[] = {".o",NULL}; /** * Wrapper around krk_valueGetAttribute... */ static KrkValue findFromProperty(KrkValue current, KrkToken next) { KrkValue member = OBJECT_VAL(krk_copyString(next.start, next.literalWidth)); krk_push(member); KrkValue value = krk_valueGetAttribute_default(current, AS_CSTRING(member), NONE_VAL()); krk_pop(); return value; } /** * Tab completion for command mode. */ void command_tab_complete(char * buffer) { /* Figure out which argument this is and where it starts */ int arg = 0; char * buf = strdup(buffer); char * b = buf; int args_count = 0; int args_space = 4; char ** args = malloc(sizeof(char*)*args_space); #define add_arg(argument) \ do { \ if (args_count == args_space) { \ args_space *= 2; \ args = realloc(args, sizeof(char*) * args_space); \ } \ args[args_count++] = argument; \ } while (0) int candidate_count= 0; int candidate_space = 4; struct Candidate * candidates = malloc(sizeof(struct Candidate)*candidate_space); /* Accept whitespace before first argument */ while (*b == ' ') b++; char * start = b; add_arg(start); while (*b && *b != ' ') b++; while (*b) { while (*b == ' ') { *b = '\0'; b++; } start = b; arg++; add_arg(start); break; } /** * Check a possible candidate and add it to the * candidates list, expanding as necessary, * if it matches for the current argument. */ #define add_candidate(candidate,candtype) \ do { \ char * _arg = args[arg]; \ int r = strncmp(_arg, candidate, strlen(_arg)); \ if (!r) { \ int skip = 0; \ for (int i = 0; i < candidate_count; ++i) { \ if (!strcmp(candidates[i].text,candidate)) { skip = 1; break; } \ } \ if (skip) break; \ if (candidate_count == candidate_space) { \ candidate_space *= 2; \ candidates = realloc(candidates,sizeof(struct Candidate) * candidate_space); \ } \ candidates[candidate_count].text = strdup(candidate); \ candidates[candidate_count].type = candtype; \ candidate_count++; \ } \ } while (0) #define Candidate_Normal 0 #define Candidate_Command 1 #define Candidate_Builtin 2 int _candidates_are_files = 0; if (arg == 0 || (arg == 1 && !strcmp(args[0], "help"))) { /* Complete command names */ for (struct command_def * c = regular_commands; regular_commands && c->name; ++c) { add_candidate(c->name,Candidate_Command); } for (struct command_def * c = prefix_commands; prefix_commands && c->name; ++c) { add_candidate(c->name,Candidate_Command); } goto _try_kuroko; } if (arg == 1 && !strcmp(args[0], "syntax")) { /* Complete syntax options */ add_candidate("none", Candidate_Builtin); for (struct syntax_definition * s = syntaxes; syntaxes && s->name; ++s) { add_candidate(s->name, Candidate_Builtin); } goto _accept_candidate; } if (arg == 1 && (!strcmp(args[0], "theme") || !strcmp(args[0], "colorscheme"))) { /* Complete color theme names */ for (struct theme_def * s = themes; themes && s->name; ++s) { add_candidate(s->name, Candidate_Builtin); } goto _accept_candidate; } if (arg == 1 && (!strcmp(args[0], "setcolor"))) { for (struct ColorName * c = color_names; c->name; ++c) { add_candidate(c->name, Candidate_Builtin); } goto _accept_candidate; } if (arg == 1 && (!strcmp(args[0], "action"))) { for (struct action_def * a = mappable_actions; a->name; ++a) { add_candidate(a->name, Candidate_Builtin); } goto _accept_candidate; } if (arg == 1 && (!strcmp(args[0], "mapkey"))) { for (int i = 0; args[arg][i]; ++i) { if (args[arg][i] == ' ') { while (args[arg][i] == ' ') { args[arg][i] = '\0'; i++; } start = &args[arg][i]; arg++; add_arg(start); i = 0; } } if (arg == 1) { for (struct mode_names * m = mode_names; m->name; ++m) { add_candidate(m->name, Candidate_Builtin); } } else if (arg == 2) { for (unsigned int i = 0; i < sizeof(KeyNames)/sizeof(KeyNames[0]); ++i) { add_candidate(KeyNames[i].name, Candidate_Builtin); } } else if (arg == 3) { for (struct action_def * a = mappable_actions; a->name; ++a) { add_candidate(a->name, Candidate_Builtin); } add_candidate("none", Candidate_Builtin); } else if (arg == 4) { for (char * c = "racnwmb"; *c; ++c) { char tmp[] = {*c,'\0'}; add_candidate(tmp, Candidate_Builtin); } } goto _accept_candidate; } if (arg == 1 && (!strcmp(args[0], "e") || !strcmp(args[0], "tabnew") || !strcmp(args[0],"split") || !strcmp(args[0],"w") || !strcmp(args[0],"runscript") || !strcmp(args[0],"rundir") || args[0][0] == '!')) { /* Complete file paths */ /* First, find the deepest directory match */ char * tmp = strdup(args[arg]); char * last_slash = strrchr(tmp, '/'); DIR * dirp; if (last_slash) { *last_slash = '\0'; if (last_slash == tmp) { /* Started with slash, and it was the only slash */ dirp = opendir("/"); } else { char * home; if (*tmp == '~' && (home = getenv("HOME"))) { char * t = malloc(strlen(tmp) + strlen(home) + 4); sprintf(t, "%s%s",home,tmp+1); dirp = opendir(t); free(t); } else { dirp = opendir(tmp); } } } else { /* No directory match, completing from current directory */ dirp = opendir("."); tmp[0] = '\0'; } if (!dirp) { /* Directory match doesn't exist, no candidates to populate */ free(tmp); goto done; } _candidates_are_files = 1; struct dirent * ent = readdir(dirp); while (ent != NULL) { if (ent->d_name[0] != '.' || (last_slash ? (last_slash[1] == '.') : (tmp[0] == '.'))) { struct stat statbuf; /* Figure out if this file is a directory */ if (last_slash) { char * x; char * home; if (tmp[0] == '~' && (home = getenv("HOME"))) { x = malloc(strlen(tmp) + 1 + strlen(ent->d_name) + 1 + strlen(home) + 1); snprintf(x, strlen(tmp) + 1 + strlen(ent->d_name) + 1 + strlen(home) + 1, "%s%s/%s",home,tmp+1,ent->d_name); } else { x = malloc(strlen(tmp) + 1 + strlen(ent->d_name) + 1); snprintf(x, strlen(tmp) + 1 + strlen(ent->d_name) + 1, "%s/%s",tmp,ent->d_name); } stat(x, &statbuf); free(x); } else { stat(ent->d_name, &statbuf); } /* Build the complete argument name to tab complete */ int type = Candidate_Normal; char s[1024] = {0}; if (last_slash == tmp) { strcat(s,"/"); } else if (*tmp) { strcat(s,tmp); strcat(s,"/"); } strcat(s,ent->d_name); /* * If it is a directory, add a / to the end so the next completion * attempt will complete the directory's contents. */ if (S_ISDIR(statbuf.st_mode)) { strcat(s,"/"); type = Candidate_Command; } int skip = 0; for (const char ** c = tab_complete_ignore; *c; ++c) { if (str_ends_with(s, *c)) { skip = 1; break; } } if (!skip) { add_candidate(s, type); } } ent = readdir(dirp); } closedir(dirp); free(tmp); goto _accept_candidate; } /* Hacky port of the kuroko repl completer */ { _try_kuroko: for (int i = 0; args[arg][i]; ++i) { if (args[arg][i] == ' ') { while (args[arg][i] == ' ') { args[arg][i] = '\0'; i++; } start = &args[arg][i]; arg++; add_arg(start); i = 0; } } krk_initScanner(args[arg]); KrkToken * space = malloc(sizeof(KrkToken) * (strlen(args[arg]) + 2)); int count = 0; do { space[count++] = krk_scanToken(); } while (space[count-1].type != TOKEN_EOF && space[count-1].type != TOKEN_ERROR); if (count == 1) { goto _cleanup; } int base = 2; int n = base; if (space[count-base].type == TOKEN_DOT) { /* Dots we need to look back at the previous tokens for */ n--; base--; } else if (space[count-base].type >= TOKEN_IDENTIFIER && space[count-base].type <= TOKEN_WITH) { /* Something alphanumeric; only for the last element */ } else { /* Some other symbol */ goto _cleanup; } while (n < count) { if (space[count-n-1].type != TOKEN_DOT) break; n++; if (n == count) break; if (space[count-n-1].type != TOKEN_IDENTIFIER) break; n++; } if (n <= count) { /* Now work forwards, starting from the current globals. */ KrkValue root = OBJECT_VAL(krk_currentThread.module); int isGlobal = 1; while (n > base) { /* And look at the potential fields for instances/classes */ KrkValue next = findFromProperty(root, space[count-n]); if (IS_NONE(next)) { /* If we hit None, we found something invalid (or literally hit a None * object, but really the difference is minimal in this case: Nothing * useful to tab complete from here. */ if (!isGlobal) goto _cleanup; /* Does this match a builtin? */ if (!krk_tableGet_fast(&vm.builtins->fields, krk_copyString(space[count-n].start,space[count-n].literalWidth), &next) || IS_NONE(next)) { goto _cleanup; } } isGlobal = 0; root = next; n -= 2; /* To skip every other dot. */ } /* Now figure out what we're completing - did we already have a partial symbol name? */ int length = (space[count-base].type == TOKEN_DOT) ? 0 : (space[count-base].length); isGlobal = isGlobal && (length != 0); /* Take the last symbol name from the chain and get its member list from dir() */ static char * syn_krk_keywords[] = { "and","class","def","else","for","if","in","import","del", "let","not","or","return","while","try","except","raise", "continue","break","as","from","elif","lambda","with","is", "pass","assert","yield","finally","async","await", NULL }; KrkInstance * fakeKeywordsObject = NULL; for (;;) { KrkValue dirList = krk_dirObject(1,(KrkValue[]){root},0); krk_push(dirList); if (!IS_INSTANCE(dirList)) { render_error("Internal error while tab completing."); goto _cleanup; } for (size_t i = 0; i < AS_LIST(dirList)->count; ++i) { KrkString * s = AS_STRING(AS_LIST(dirList)->values[i]); krk_push(OBJECT_VAL(s)); KrkToken asToken = {.start = s->chars, .literalWidth = s->length}; KrkValue thisValue = findFromProperty(root, asToken); krk_push(thisValue); if (IS_CLOSURE(thisValue) || IS_BOUND_METHOD(thisValue) || (IS_NATIVE(thisValue) && !(((KrkNative*)AS_OBJECT(thisValue))->flags & KRK_NATIVE_FLAGS_IS_DYNAMIC_PROPERTY))) { size_t allocSize = s->length + 2; char * tmp = malloc(allocSize); size_t len = snprintf(tmp, allocSize, "%s(", s->chars); s = krk_takeString(tmp, len); krk_pop(); krk_push(OBJECT_VAL(s)); } /* If this symbol is shorter than the current submatch, skip it. */ if (length && (int)s->length < length) continue; if (!memcmp(s->chars, space[count-base].start, length)) { char * tmp = malloc(strlen(args[arg]) + s->length + 1); sprintf(tmp,"%s%s", args[arg], s->chars + length); int type = Candidate_Normal; if (IS_OBJECT(root) && AS_OBJECT(root) == (KrkObj*)vm.builtins) { type = Candidate_Builtin; } else if (IS_OBJECT(root) && AS_OBJECT(root) == (KrkObj*)fakeKeywordsObject) { type = Candidate_Command; } add_candidate(tmp, type); free(tmp); } } /* * If the object we were scanning was the current module, * then we should also throw the builtins into the ring. */ if (isGlobal && AS_OBJECT(root) == (KrkObj*)krk_currentThread.module) { root = OBJECT_VAL(vm.builtins); continue; } else if (isGlobal && AS_OBJECT(root) == (KrkObj*)vm.builtins) { fakeKeywordsObject = krk_newInstance(vm.baseClasses->objectClass); root = OBJECT_VAL(fakeKeywordsObject); krk_push(root); for (char ** keyword = syn_krk_keywords; *keyword; keyword++) { krk_attachNamedValue(&fakeKeywordsObject->fields, *keyword, NONE_VAL()); } continue; } else { break; } } } _cleanup: free(space); krk_resetStack(); } _accept_candidate: if (candidate_count == 0) { redraw_statusbar(); goto done; } if (candidate_count == 1) { /* Only one completion possibility */ redraw_statusbar(); /* Fill out the rest of the command */ char * cstart = (buffer) + (start - buf); for (unsigned int i = 0; i < strlen(candidates[0].text); ++i) { *cstart = candidates[0].text[i]; cstart++; } *cstart = '\0'; } else { /* Sort candidates */ qsort(candidates, candidate_count, sizeof(candidates[0]), compare_candidate); /* Print candidates in status bar */ char * tmp = malloc(global_config.term_width+1 + candidate_count * 100); memset(tmp, 0, global_config.term_width+1); int offset = 0; for (int i = 0; i < candidate_count; ++i) { char * printed_candidate = candidates[i].text; if (_candidates_are_files) { for (char * c = printed_candidate; *c; ++c) { if (c[0] == '/' && c[1] != '\0') { printed_candidate = c+1; } } } else { for (char * c = printed_candidate; *c; ++c) { if ((c[0] == '.' || c[0] == '(') && c[1] != '\0') { printed_candidate = c+1; } } } if (offset + 1 + (signed)strlen(printed_candidate) > global_config.term_width - 5) { strcat(tmp, "..."); break; } if (offset > 0) { strcat(tmp, " "); offset++; } const char * colorString = color_string( candidates[i].type == Candidate_Normal ? COLOR_STATUS_FG : candidates[i].type == Candidate_Command ? COLOR_KEYWORD : candidates[i].type == Candidate_Builtin ? COLOR_TYPE : COLOR_STATUS_FG, COLOR_STATUS_BG); /* Does not affect offset */ strcat(tmp, colorString); strcat(tmp, printed_candidate); offset += strlen(printed_candidate); } render_status_message("%s", tmp); free(tmp); /* Complete to longest common substring */ char * cstart = (buffer) + (start - buf); for (int i = 0; i < 1023 /* max length of command */; i++) { for (int j = 1; j < candidate_count; ++j) { if (candidates[0].text[i] != candidates[j].text[i]) goto _reject; } *cstart = candidates[0].text[i]; cstart++; } /* End of longest common substring */ _reject: *cstart = '\0'; /* Just make sure the buffer doesn't end on an incomplete multibyte sequence */ if (start > buf) { /* Start point needs to be something other than first byte */ char * tmp = cstart - 1; if ((*tmp & 0xC0) == 0x80) { /* Count back until we find the start byte and make sure we have the right number */ int count = 1; int x = 0; while (tmp >= start) { x++; tmp--; if ((*tmp & 0xC0) == 0x80) { count++; } else if ((*tmp & 0xC0) == 0xC0) { /* How many should we have? */ int i = 1; int j = *tmp; while (j & 0x20) { i += 1; j <<= 1; } if (count != i) { *tmp = '\0'; break; } break; } else { /* This isn't right, we had a bad multibyte sequence? Or someone is typing Latin-1. */ tmp++; *tmp = '\0'; break; } } } else if ((*tmp & 0xC0) == 0xC0) { *tmp = '\0'; } } } /* Free candidates */ for (int i = 0; i < candidate_count; ++i) { free(candidates[i].text); } done: free(candidates); free(buf); } /** * Macros for use in command mode. */ #define _syn_command() do { env->syntax = global_config.command_syn; } while (0) #define _syn_restore() do { env->syntax = global_config.command_syn_back; } while (0) #define _restore_history(point) do { \ unsigned char * t = command_history[point]; \ global_config.command_col_no = 1; \ global_config.command_buffer->actual = 0; \ _syn_command(); \ uint32_t state = 0; \ uint32_t c = 0; \ while (*t) { \ if (!decode(&state, &c, *t)) { \ char_t _c = {codepoint_width(c), 0, c}; \ global_config.command_buffer = line_insert(global_config.command_buffer, _c, global_config.command_col_no - 1, -1); \ global_config.command_col_no++; \ } else if (state == UTF8_REJECT) state = 0; \ t++; \ } \ _syn_restore(); \ } while (0) /** * Draw the command buffer and any prefix. */ void render_command_input_buffer(void) { if (!global_config.command_buffer) return; /* Place the cursor at the bottom of the screen */ place_cursor(1, global_config.term_height); paint_line(COLOR_BG); set_colors(COLOR_ALT_FG, COLOR_BG); /* If there's a mode name to render, draw it first */ int _left_gutter = 0; if (env->mode == MODE_LINE_SELECTION) { _left_gutter = printf("(LINE %d:%d)", (env->start_line < env->line_no) ? env->start_line : env->line_no, (env->start_line < env->line_no) ? env->line_no : env->start_line); } else if (env->mode == MODE_COL_SELECTION) { _left_gutter = printf("(COL %d:%d %d)", (env->start_line < env->line_no) ? env->start_line : env->line_no, (env->start_line < env->line_no) ? env->line_no : env->start_line, (env->sel_col)); } else if (env->mode == MODE_CHAR_SELECTION) { _left_gutter = printf("(CHAR)"); } /* Figure out the cursor position and adjust the offset if necessary */ int x = 2 + _left_gutter - global_config.command_offset; for (int i = 0; i < global_config.command_col_no - 1; ++i) { char_t * c = &global_config.command_buffer->text[i]; x += c->display_width; } if (x > global_config.term_width - 1) { int diff = x - (global_config.term_width - 1); global_config.command_offset += diff; x -= diff; } if (x < 2 + _left_gutter) { int diff = (2 + _left_gutter) - x; global_config.command_offset -= diff; x += diff; } /* If the input buffer is horizontally shifted because it's too long, indicate that. */ if (global_config.command_offset) { set_colors(COLOR_ALT_FG, COLOR_ALT_BG); printf("<"); } else { /* Otherwise indicate buffer mode (search / ?, or command :) */ set_colors(COLOR_FG, COLOR_BG); if (global_config.overlay_mode == OVERLAY_MODE_SEARCH) { printf(global_config.search_direction == 0 ? "?" : "/"); } else if (global_config.overlay_mode == OVERLAY_MODE_FILESEARCH) { printf("_"); } else { printf(":"); } } /* Render the buffer */ render_line(global_config.command_buffer, global_config.term_width-1-_left_gutter, global_config.command_offset, -1); /* Place and display the cursor */ place_cursor(x, global_config.term_height); show_cursor(); } BIM_ACTION(command_discard, 0, "Discard the input buffer and cancel command or search." )(void) { free(global_config.command_buffer); global_config.command_buffer = NULL; if (global_config.overlay_mode == OVERLAY_MODE_SEARCH) { env->line_no = global_config.prev_line; env->col_no = global_config.prev_col; /* Unhighlight search matches */ for (int i = 0; i < env->line_count; ++i) { for (int j = 0; j < env->lines[i]->actual; ++j) { env->lines[i]->text[j].flags &= (~FLAG_SEARCH); } rehighlight_search(env->lines[i]); } } global_config.overlay_mode = OVERLAY_MODE_NONE; redraw_all(); /* TODO exit some other modes? */ } BIM_ACTION(enter_command, 0, "Enter command input mode." )(void) { global_config.overlay_mode = OVERLAY_MODE_COMMAND; global_config.command_offset = 0; global_config.command_col_no = 1; if (global_config.command_buffer) { free(global_config.command_buffer); } global_config.command_buffer = calloc(sizeof(line_t)+sizeof(char_t)*32,1); global_config.command_buffer->available = 32; global_config.command_syn_back = env->syntax; global_config.command_syn = find_syntax_calculator("bimcmd"); global_config.history_point = -1; render_command_input_buffer(); } BIM_ACTION(command_accept, 0, "Accept the command input and run the requested command." )(void) { /* Convert command buffer to UTF-8 char-array string */ size_t size = 0; for (int i = 0; i < global_config.command_buffer->actual; ++i) { char tmp[8] = {0}; size += to_eight(global_config.command_buffer->text[i].codepoint, tmp); } char * tmp = malloc(size + 8); /* for overflow from to_eight */ char * t = tmp; for (int i = 0; i < global_config.command_buffer->actual; ++i) { t += to_eight(global_config.command_buffer->text[i].codepoint, t); } *t = '\0'; /* Free the original editing buffer */ free(global_config.command_buffer); global_config.command_buffer = NULL; /* Run the converted command */ global_config.break_from_selection = 0; insert_command_history(tmp); global_config.overlay_mode = OVERLAY_MODE_NONE; process_command(tmp); free(tmp); if (!global_config.break_from_selection && env->mode != MODE_DIRECTORY_BROWSE) { if (env->mode == MODE_LINE_SELECTION || env->mode == MODE_CHAR_SELECTION || env->mode == MODE_COL_SELECTION) { recalculate_selected_lines(); } env->mode = MODE_NORMAL; } /* Leave command mode */ } BIM_ACTION(command_word_delete, 0, "Delete the previous word from the input buffer." )(void) { _syn_command(); while (global_config.command_col_no > 1 && (global_config.command_buffer->text[global_config.command_col_no-2].codepoint == ' ' || global_config.command_buffer->text[global_config.command_col_no-2].codepoint == '/')) { line_delete(global_config.command_buffer, global_config.command_col_no - 1, -1); global_config.command_col_no--; } while (global_config.command_col_no > 1 && global_config.command_buffer->text[global_config.command_col_no-2].codepoint != ' ' && global_config.command_buffer->text[global_config.command_col_no-2].codepoint != '/') { line_delete(global_config.command_buffer, global_config.command_col_no - 1, -1); global_config.command_col_no--; } _syn_restore(); } BIM_ACTION(command_tab_complete_buffer, 0, "Complete command names and arguments in the input buffer." )(void) { /* command_tab_complete should probably just be adjusted to deal with the buffer... */ char * tmp = calloc(1024,1); char * t = tmp; for (int i = 0; i < global_config.command_col_no-1; ++i) { t += to_eight(global_config.command_buffer->text[i].codepoint, t); } *t = '\0'; _syn_command(); while (global_config.command_col_no > 1) { line_delete(global_config.command_buffer, global_config.command_col_no - 1, -1); global_config.command_col_no--; } _syn_restore(); command_tab_complete(tmp); _syn_command(); uint32_t state = 0, c= 0; t = tmp; while (*t) { if (!decode(&state, &c, *t)) { char_t _c = {codepoint_width(c), 0, c}; global_config.command_buffer = line_insert(global_config.command_buffer, _c, global_config.command_col_no - 1, -1); global_config.command_col_no++; } t++; } _syn_restore(); free(tmp); } BIM_ACTION(command_backspace, 0, "Erase the character before the cursor in the input buffer." )(void) { if (global_config.command_col_no <= 1) { if (global_config.command_buffer->actual == 0) { command_discard(); } return; } _syn_command(); line_delete(global_config.command_buffer, global_config.command_col_no - 1, -1); _syn_restore(); global_config.command_col_no--; global_config.command_offset = 0; } BIM_ACTION(command_scroll_history, ARG_IS_CUSTOM, "Scroll through command input history." )(int direction) { if (direction == -1) { if (command_history[global_config.history_point+1]) { _restore_history(global_config.history_point+1); global_config.history_point++; } } else { if (global_config.history_point > 0) { global_config.history_point--; _restore_history(global_config.history_point); } else { global_config.history_point = -1; global_config.command_col_no = 1; global_config.command_buffer->actual = 0; } } } BIM_ACTION(command_word_left, 0, "Move to the start of the previous word in the input buffer." )(void) { if (global_config.command_col_no > 1) { do { global_config.command_col_no--; } while (isspace(global_config.command_buffer->text[global_config.command_col_no-1].codepoint) && global_config.command_col_no > 1); if (global_config.command_col_no == 1) return; do { global_config.command_col_no--; } while (!isspace(global_config.command_buffer->text[global_config.command_col_no-1].codepoint) && global_config.command_col_no > 1); if (isspace(global_config.command_buffer->text[global_config.command_col_no-1].codepoint) && global_config.command_col_no < global_config.command_buffer->actual) global_config.command_col_no++; } } BIM_ACTION(command_word_right, 0, "Move to the start of the next word in the input buffer." )(void) { if (global_config.command_col_no < global_config.command_buffer->actual) { do { global_config.command_col_no++; if (global_config.command_col_no > global_config.command_buffer->actual) { global_config.command_col_no = global_config.command_buffer->actual+1; break; } } while (!isspace(global_config.command_buffer->text[global_config.command_col_no-1].codepoint) && global_config.command_col_no <= global_config.command_buffer->actual); do { global_config.command_col_no++; if (global_config.command_col_no > global_config.command_buffer->actual) { global_config.command_col_no = global_config.command_buffer->actual+1; break; } } while (isspace(global_config.command_buffer->text[global_config.command_col_no-1].codepoint) && global_config.command_col_no <= global_config.command_buffer->actual); if (global_config.command_col_no > global_config.command_buffer->actual) { global_config.command_col_no = global_config.command_buffer->actual+1; } } } BIM_ACTION(command_cursor_left, 0, "Move the cursor one character left in the input buffer." )(void) { if (global_config.command_col_no > 1) global_config.command_col_no--; } BIM_ACTION(command_cursor_right, 0, "Move the cursor one character right in the input buffer." )(void) { if (global_config.command_col_no < global_config.command_buffer->actual+1) global_config.command_col_no++; } BIM_ACTION(command_cursor_home, 0, "Move the cursor to the start of the input buffer." )(void) { global_config.command_col_no = 1; } BIM_ACTION(command_cursor_end, 0, "Move the cursor to the end of the input buffer." )(void) { global_config.command_col_no = global_config.command_buffer->actual + 1; } BIM_ACTION(eat_mouse, 0, "(temporary) Read, but ignore mouse input." )(void) { bim_getch(); bim_getch(); bim_getch(); } BIM_ACTION(command_insert_char, ARG_IS_INPUT, "Insert one character into the input buffer." )(int c) { char_t _c = {codepoint_width(c), 0, c}; _syn_command(); global_config.command_buffer = line_insert(global_config.command_buffer, _c, global_config.command_col_no - 1, -1); _syn_restore(); global_config.command_col_no++; } /** * Determine whether a string should be searched * case-sensitive or not based on whether it contains * any upper-case letters. */ int smart_case(uint32_t * str) { if (!global_config.smart_case) return 0; for (uint32_t * s = str; *s; ++s) { if (tolower(*s) != (int)*s) { return 0; } } return 1; } /** * Search forward from the given cursor position * to find a basic search match. * * This could be more complicated... */ void find_match(int from_line, int from_col, int * out_line, int * out_col, uint32_t * str, int * matchlen) { int col = from_col; int ignorecase = smart_case(str); for (int i = from_line; i <= env->line_count; ++i) { line_t * line = env->lines[i - 1]; int j = col - 1; while (j < line->actual + 1) { if (subsearch_matches(line, j, str, ignorecase, matchlen)) { *out_line = i; *out_col = j + 1; return; } j++; } col = 0; } } /** * Search backwards for matching string. */ void find_match_backwards(int from_line, int from_col, int * out_line, int * out_col, uint32_t * str) { int col = from_col; int ignorecase = smart_case(str); for (int i = from_line; i >= 1; --i) { line_t * line = env->lines[i-1]; int j = col - 1; while (j > -1) { if (subsearch_matches(line, j, str, ignorecase, NULL)) { *out_line = i; *out_col = j + 1; return; } j--; } col = (i > 1) ? (env->lines[i-2]->actual + 1) : -1; } } /** * Re-mark search matches while editing text. * This gets called after recalculate_syntax, so it works as we're typing or * whenever syntax calculation would redraw other lines. * XXX There's a bunch of code duplication between the (now three) search match functions. * and search should be improved to support regex anyway, so this needs to be fixed. */ void rehighlight_search(line_t * line) { if (!global_config.search) return; int j = 0; while (j < line->actual) { line->text[j].flags &= ~(FLAG_SEARCH); j++; } int ignorecase = smart_case(global_config.search); j = 0; while (j < line->actual) { int matchlen = 0; if (subsearch_matches(line, j, global_config.search, ignorecase, &matchlen)) { for (int i = j; matchlen > 0; ++i, matchlen--) { line->text[i].flags |= FLAG_SEARCH; } } j++; } } /** * Draw the matched search result. */ void draw_search_match(uint32_t * buffer, int redraw_buffer) { for (int i = 0; i < env->line_count; ++i) { for (int j = 0; j < env->lines[i]->actual; ++j) { env->lines[i]->text[j].flags &= (~FLAG_SEARCH); } } int my_index = 0, match_count = 0; int line = -1, col = -1, _line = 1, _col = 1; do { int matchlen; find_match(_line, _col, &line, &col, buffer, &matchlen); if (line != -1) { line_t * l = env->lines[line-1]; for (int i = col; matchlen > 0; ++i, --matchlen) { l->text[i-1].flags |= FLAG_SEARCH; } match_count += 1; if (col == env->col_no && line == env->line_no) my_index = match_count; } _line = line; _col = col+1; line = -1; col = -1; } while (_line != -1); redraw_text(); place_cursor_actual(); redraw_statusbar(); redraw_commandline(); set_fg_color(COLOR_ALT_FG); printf("[%d/%d] ", my_index, match_count); set_fg_color(COLOR_KEYWORD); printf(redraw_buffer == 1 ? "/" : "?"); set_fg_color(COLOR_FG); uint32_t * c = buffer; while (*c) { char tmp[7] = {0}; /* Max six bytes, use 7 to ensure last is always nil */ to_eight(*c, tmp); printf("%s", tmp); c++; } } BIM_ACTION(start_file_search, 0, "Search for open files and switch tabs quickly.")(void) { global_config.overlay_mode = OVERLAY_MODE_FILESEARCH; global_config.command_offset = 0; global_config.command_col_no = 1; if (global_config.command_buffer) { free(global_config.command_buffer); } global_config.command_buffer = calloc(sizeof(line_t)+sizeof(char_t)*32,1); global_config.command_buffer->available = 32; global_config.command_syn_back = env->syntax; global_config.command_syn = NULL; /* uh, dunno for now */ render_command_input_buffer(); } BIM_ACTION(file_search_accept, 0, "Open the requested tab")(void) { if (!global_config.command_buffer->actual) { goto _finish; } /* See if the command buffer matches any open buffers */ buffer_t * match = NULL; for (int i = global_config.tab_offset; i < buffers_len; i++) { buffer_t * _env = buffers[i]; if (global_config.overlay_mode == OVERLAY_MODE_FILESEARCH) { if (global_config.command_buffer->actual) { char * f = _env->file_name ? file_basename(_env->file_name) : ""; /* TODO: Support unicode input here; needs conversion */ int i = 0; for (; i < global_config.command_buffer->actual && f[i] == global_config.command_buffer->text[i].codepoint; ++i); if (global_config.command_buffer->actual == i) { match = _env; break; } } } } if (match) { env = match; if (left_buffer && (left_buffer != env && right_buffer != env)) unsplit(); } _finish: /* Free the original editing buffer */ free(global_config.command_buffer); global_config.command_buffer = NULL; /* Leave command mode */ global_config.overlay_mode = OVERLAY_MODE_NONE; redraw_all(); } BIM_ACTION(enter_search, ARG_IS_CUSTOM, "Enter search mode." )(int direction) { global_config.overlay_mode = OVERLAY_MODE_SEARCH; global_config.command_offset = 0; global_config.command_col_no = 1; global_config.prev_line = env->line_no; global_config.prev_col = env->col_no; global_config.prev_coffset = env->coffset; global_config.prev_offset = env->offset; global_config.search_direction = direction; if (global_config.command_buffer) { free(global_config.command_buffer); } global_config.command_buffer = calloc(sizeof(line_t)+sizeof(char_t)*32,1); global_config.command_buffer->available = 32; global_config.command_syn_back = env->syntax; global_config.command_syn = NULL; /* Disable syntax highlighting in search; maybe use buffer's mode instead? */ render_command_input_buffer(); } BIM_ACTION(search_accept, 0, "Accept the search term and return to the previous mode." )(void) { /* Store the accepted search */ if (!global_config.command_buffer->actual) { if (global_config.search) { search_next(); } goto _finish; } if (global_config.search) { free(global_config.search); } global_config.search = malloc((global_config.command_buffer->actual + 1) * sizeof(uint32_t)); for (int i = 0; i < global_config.command_buffer->actual; ++i) { global_config.search[i] = global_config.command_buffer->text[i].codepoint; } global_config.search[global_config.command_buffer->actual] = 0; _finish: /* Free the original editing buffer */ free(global_config.command_buffer); global_config.command_buffer = NULL; /* Leave command mode */ global_config.overlay_mode = OVERLAY_MODE_NONE; if (global_config.search) draw_search_match(global_config.search, global_config.search_direction); } /** * Find the next search result, or loop back around if at the end. */ BIM_ACTION(search_next, 0, "Jump to the next search match." )(void) { if (!global_config.search) return; if (env->coffset) env->coffset = 0; int line = -1, col = -1, wrapped = 0; find_match(env->line_no, env->col_no+1, &line, &col, global_config.search, NULL); if (line == -1) { if (!global_config.search_wraps) return; find_match(1,1, &line, &col, global_config.search, NULL); if (line == -1) return; wrapped = 1; } env->col_no = col; env->line_no = line; set_preferred_column(); draw_search_match(global_config.search, 1); if (wrapped) { set_fg_color(COLOR_ALT_FG); printf(" (search wrapped to top)"); } } /** * Find the previous search result, or loop to the end of the file. */ BIM_ACTION(search_prev, 0, "Jump to the preceding search match." )(void) { if (!global_config.search) return; if (env->coffset) env->coffset = 0; int line = -1, col = -1, wrapped = 0; find_match_backwards(env->line_no, env->col_no-1, &line, &col, global_config.search); if (line == -1) { if (!global_config.search_wraps) return; find_match_backwards(env->line_count, env->lines[env->line_count-1]->actual, &line, &col, global_config.search); if (line == -1) return; wrapped = 1; } env->col_no = col; env->line_no = line; set_preferred_column(); draw_search_match(global_config.search, 0); if (wrapped) { set_fg_color(COLOR_ALT_FG); printf(" (search wrapped to bottom)"); } } /** * Find the matching paren for this one. * * This approach skips having to do its own syntax parsing * to deal with, eg., erroneous parens in comments. It does * this by finding the matching paren with the same flag * value, thus parens in strings will match, parens outside * of strings will match, but parens in strings won't * match parens outside of strings and so on. */ void find_matching_paren(int * out_line, int * out_col, int in_col) { if (env->col_no - in_col + 1 > env->lines[env->line_no-1]->actual) { return; /* Invalid cursor position */ } /* TODO: vim can find the nearest paren to start searching from, we need to be on one right now */ int paren_match = 0; int direction = 0; int start = env->lines[env->line_no-1]->text[env->col_no-in_col].codepoint; int flags = env->lines[env->line_no-1]->text[env->col_no-in_col].flags & 0x1F; int count = 0; /* TODO what about unicode parens? */ for (int i = 0; paren_pairs[i]; ++i) { if (start == paren_pairs[i]) { direction = (i % 2 == 0) ? 1 : -1; paren_match = paren_pairs[(i % 2 == 0) ? (i+1) : (i-1)]; break; } } if (!paren_match) return; /* Scan for match */ int line = env->line_no; int col = env->col_no - in_col + 1; do { while (col > 0 && col < env->lines[line-1]->actual + 1) { /* Only match on same syntax */ if ((env->lines[line-1]->text[col-1].flags & 0x1F) == flags) { /* Count up on same direction */ if (env->lines[line-1]->text[col-1].codepoint == start) count++; /* Count down on opposite direction */ if (env->lines[line-1]->text[col-1].codepoint == paren_match) { count--; /* When count == 0 we have a match */ if (count == 0) goto _match_found; } } col += direction; } line += direction; /* Reached first/last line with no match */ if (line == 0 || line == env->line_count + 1) { return; } /* Reset column to start/end of line, depending on direction */ if (direction > 0) { col = 1; } else { col = env->lines[line-1]->actual; } } while (1); _match_found: *out_line = line; *out_col = col; } /** * Switch to the left split view * (Primarily to handle cases where the left and right are the same buffer) */ BIM_ACTION(use_left_buffer, 0, "Switch to the left split view." )(void) { if (left_buffer == right_buffer && env->left != 0) { view_right_offset = env->offset; env->width = env->left; env->left = 0; env->offset = view_left_offset; } env = left_buffer; update_title(); } /** * Switch to the right split view * (Primarily to handle cases where the left and right are the same buffer) */ BIM_ACTION(use_right_buffer, 0, "Switch to the right split view." )(void) { if (left_buffer == right_buffer && env->left == 0) { view_left_offset = env->offset; env->left = env->width; env->width = global_config.term_width - env->width; env->offset = view_right_offset; } env = right_buffer; update_title(); } void handle_common_mouse(int buttons, int x, int y) { if (buttons == 64) { /* Scroll up */ if (global_config.shift_scrolling) { env->loading = 1; int shifted = 0; for (int i = 0; i < global_config.scroll_amount; ++i) { if (env->offset > 0) { env->offset--; if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - global_config.tabs_visible - global_config.cursor_padding) { cursor_up(); } shifted++; } } env->loading = 0; if (!shifted) return; if (global_config.can_scroll && !left_buffer) { if (!global_config.can_insert) { shift_down(shifted); redraw_tabbar(); } else { insert_lines_at(global_config.tabs_visible ? 2 : 1, shifted); } for (int i = 0; i < shifted; ++i) { redraw_line(env->offset+i); } } else { redraw_tabbar(); redraw_text(); } redraw_statusbar(); redraw_commandline(); place_cursor_actual(); } else { for (int i = 0; i < global_config.scroll_amount; ++i) { cursor_up(); } } return; } else if (buttons == 65) { /* Scroll down */ if (global_config.shift_scrolling) { env->loading = 1; int shifted = 0; for (int i = 0; i < global_config.scroll_amount; ++i) { if (env->offset < env->line_count-1) { env->offset++; int e = (env->offset == 0) ? env->offset : env->offset + global_config.cursor_padding; if (env->line_no <= e) { cursor_down(); } shifted++; } } env->loading = 0; if (!shifted) return; if (global_config.can_scroll && !left_buffer) { if (!global_config.can_insert) { shift_up(shifted); redraw_tabbar(); } else { delete_lines_at(global_config.tabs_visible ? 2 : 1, shifted); } int l = global_config.term_height - global_config.bottom_size - global_config.tabs_visible; for (int i = 0; i < shifted; ++i) { if (env->offset + l - i < env->line_count + 1) { redraw_line(env->offset + l-1-i); } else { draw_excess_line(l - 1 - i); } } } else { redraw_tabbar(); redraw_text(); } redraw_statusbar(); redraw_commandline(); place_cursor_actual(); } else { for (int i = 0; i < global_config.scroll_amount; ++i) { cursor_down(); } } return; } else if (buttons == 3) { /* Move cursor to position */ if (x < 0) return; if (y < 0) return; if (y == 1 && global_config.tabs_visible) { /* Pick from tabs */ if (env->mode != MODE_NORMAL && env->mode != MODE_INSERT) return; /* Don't let the tab be switched in other modes for now */ int _x = 0; if (global_config.tab_offset) _x = 1; if (global_config.tab_offset && _x >= x) { global_config.tab_offset--; redraw_tabbar(); return; } for (int i = global_config.tab_offset; i < buffers_len; i++) { buffer_t * _env = buffers[i]; char tmp[64]; int size = 0; int filled = draw_tab_name(_env, tmp, global_config.term_width - _x, &size); _x += size; if (_x >= x) { if (left_buffer && buffers[i] != left_buffer && buffers[i] != right_buffer) unsplit(); env = buffers[i]; redraw_all(); update_title(); return; } if (filled) break; } if (x > _x && global_config.tab_offset < buffers_len - 1) { global_config.tab_offset++; redraw_tabbar(); } return; } if (env->mode == MODE_NORMAL || env->mode == MODE_INSERT) { int current_mode = env->mode; if (x < env->left && env == right_buffer) { use_left_buffer(); } else if (x > env->width && env == left_buffer) { use_right_buffer(); } env->mode = current_mode; redraw_all(); } if (env->left) { x -= env->left; } /* Figure out y coordinate */ int line_no = y + env->offset - global_config.tabs_visible; int col_no = -1; if (line_no > env->line_count) { line_no = env->line_count; } if (line_no != env->line_no) { env->coffset = 0; } /* Account for the left hand gutter */ int num_size = num_width() + gutter_width(); int _x = num_size - (line_no == env->line_no ? env->coffset : 0); /* Determine where the cursor is physically */ for (int i = 0; i < env->lines[line_no-1]->actual; ++i) { char_t * c = &env->lines[line_no-1]->text[i]; _x += c->display_width; if (_x > x-1) { col_no = i+1; break; } } if (col_no == -1 || col_no > env->lines[line_no-1]->actual) { col_no = env->lines[line_no-1]->actual; } env->line_no = line_no; env->col_no = col_no; set_history_break(); set_preferred_column(); redraw_statusbar(); place_cursor_actual(); } return; } /** * Handle mouse event */ BIM_ACTION(handle_mouse, 0, "Process mouse actions." )(void) { int buttons = bim_getch() - 32; int x = bim_getch() - 32; int y = bim_getch() - 32; handle_common_mouse(buttons, x, y); } BIM_ACTION(eat_mouse_sgr, 0, "Receive, but do not process, mouse actions." )(void) { do { int _c = bim_getch(); if (_c == -1 || _c == 'm' || _c == 'M') break; } while (1); } BIM_ACTION(handle_mouse_sgr, 0, "Process SGR-style mouse actions." )(void) { int values[3] = {0}; char tmp[512] = {0}; char * c = tmp; int buttons = 0; do { int _c = bim_getch(); if (_c == -1) { break; } if (_c == 'm') { buttons = 3; break; } else if (_c == 'M') { buttons = 0; break; } *c = _c; ++c; } while (1); char * j = tmp; char * last = tmp; int i = 0; while (*j) { if (*j == ';') { *j = '\0'; values[i] = atoi(last); last = j+1; i++; if (i == 3) break; } j++; } if (last && i < 3) values[i] = atoi(last); if (buttons != 3) { buttons = values[0]; } int x = values[1]; int y = values[2]; handle_common_mouse(buttons, x, y); } BIM_ACTION(insert_char, ARG_IS_INPUT | ACTION_IS_RW, "Insert one character." )(unsigned int c) { if (!c) { render_error("Inserted nil byte?"); return; } char_t _c; _c.codepoint = c; _c.flags = 0; _c.display_width = codepoint_width(c); line_t * line = env->lines[env->line_no - 1]; line_t * nline = line_insert(line, _c, env->col_no - 1, env->line_no - 1); if (line != nline) { env->lines[env->line_no - 1] = nline; } env->col_no += 1; set_preferred_column(); set_modified(); } BIM_ACTION(replace_char, ARG_IS_PROMPT | ACTION_IS_RW, "Replace a single character." )(unsigned int c) { if (env->col_no < 1 || env->col_no > env->lines[env->line_no-1]->actual) return; if (c >= KEY_ESCAPE) { render_error("Invalid key for replacement"); return; } char_t _c; _c.codepoint = c; _c.flags = 0; _c.display_width = codepoint_width(c); line_replace(env->lines[env->line_no-1], _c, env->col_no-1, env->line_no-1); redraw_line(env->line_no-1); set_modified(); } BIM_ACTION(undo_history, ACTION_IS_RW, "Undo history until the last breakpoint." )(void) { if (!global_config.history_enabled) return; env->loading = 1; history_t * e = env->history; if (e->type == HISTORY_SENTINEL) { env->loading = 0; render_commandline_message("Already at oldest change"); return; } int count_chars = 0; int count_lines = 0; do { if (e->type == HISTORY_SENTINEL) break; switch (e->type) { case HISTORY_INSERT: /* Delete */ line_delete( env->lines[e->contents.insert_delete_replace.lineno], e->contents.insert_delete_replace.offset+1, e->contents.insert_delete_replace.lineno ); count_chars++; break; case HISTORY_DELETE: { char_t _c = {codepoint_width(e->contents.insert_delete_replace.old_codepoint),0,e->contents.insert_delete_replace.old_codepoint}; env->lines[e->contents.insert_delete_replace.lineno] = line_insert( env->lines[e->contents.insert_delete_replace.lineno], _c, e->contents.insert_delete_replace.offset-1, e->contents.insert_delete_replace.lineno ); } count_chars++; break; case HISTORY_REPLACE: { char_t _o = {codepoint_width(e->contents.insert_delete_replace.old_codepoint),0,e->contents.insert_delete_replace.old_codepoint}; line_replace( env->lines[e->contents.insert_delete_replace.lineno], _o, e->contents.insert_delete_replace.offset, e->contents.insert_delete_replace.lineno ); } count_chars++; break; case HISTORY_REMOVE_LINE: env->lines = add_line(env->lines, e->contents.remove_replace_line.lineno); replace_line(env->lines, e->contents.remove_replace_line.lineno, e->contents.remove_replace_line.old_contents); count_lines++; break; case HISTORY_ADD_LINE: env->lines = remove_line(env->lines, e->contents.add_merge_split_lines.lineno); count_lines++; break; case HISTORY_REPLACE_LINE: replace_line(env->lines, e->contents.remove_replace_line.lineno, e->contents.remove_replace_line.old_contents); count_lines++; break; case HISTORY_SPLIT_LINE: env->lines = merge_lines(env->lines, e->contents.add_merge_split_lines.lineno+1); count_lines++; break; case HISTORY_MERGE_LINES: env->lines = split_line(env->lines, e->contents.add_merge_split_lines.lineno-1, e->contents.add_merge_split_lines.split); count_lines++; break; case HISTORY_BREAK: /* Ignore break */ break; default: render_error("Unknown type %d!\n", e->type); break; } env->line_no = env->history->line; env->col_no = env->history->col; env->history = e->previous; e = env->history; } while (e->type != HISTORY_BREAK); if (env->line_no > env->line_count) env->line_no = env->line_count; if (env->line_no < 1) env->line_no = 1; if (env->col_no > env->lines[env->line_no-1]->actual) env->col_no = env->lines[env->line_no-1]->actual; if (env->col_no < 1) env->col_no = 1; env->modified = (env->history != env->last_save_history); env->loading = 0; for (int i = 0; i < env->line_count; ++i) { env->lines[i]->istate = 0; recalculate_tabs(env->lines[i]); } schedule_complete_recalc(); place_cursor_actual(); update_title(); redraw_all(); render_commandline_message("%d character%s, %d line%s changed", count_chars, (count_chars == 1) ? "" : "s", count_lines, (count_lines == 1) ? "" : "s"); } BIM_ACTION(redo_history, ACTION_IS_RW, "Redo history until the next breakpoint." )(void) { if (!global_config.history_enabled) return; env->loading = 1; history_t * e = env->history->next; if (!e) { env->loading = 0; render_commandline_message("Already at newest change"); return; } int count_chars = 0; int count_lines = 0; while (e) { if (e->type == HISTORY_BREAK) { env->history = e; break; } switch (e->type) { case HISTORY_INSERT: { char_t _c = {codepoint_width(e->contents.insert_delete_replace.codepoint),0,e->contents.insert_delete_replace.codepoint}; env->lines[e->contents.insert_delete_replace.lineno] = line_insert( env->lines[e->contents.insert_delete_replace.lineno], _c, e->contents.insert_delete_replace.offset, e->contents.insert_delete_replace.lineno ); } count_chars++; break; case HISTORY_DELETE: /* Delete */ line_delete( env->lines[e->contents.insert_delete_replace.lineno], e->contents.insert_delete_replace.offset, e->contents.insert_delete_replace.lineno ); count_chars++; break; case HISTORY_REPLACE: { char_t _o = {codepoint_width(e->contents.insert_delete_replace.codepoint),0,e->contents.insert_delete_replace.codepoint}; line_replace( env->lines[e->contents.insert_delete_replace.lineno], _o, e->contents.insert_delete_replace.offset, e->contents.insert_delete_replace.lineno ); } count_chars++; break; case HISTORY_ADD_LINE: env->lines = add_line(env->lines, e->contents.remove_replace_line.lineno); count_lines++; break; case HISTORY_REMOVE_LINE: env->lines = remove_line(env->lines, e->contents.remove_replace_line.lineno); count_lines++; break; case HISTORY_REPLACE_LINE: replace_line(env->lines, e->contents.remove_replace_line.lineno, e->contents.remove_replace_line.contents); count_lines++; break; case HISTORY_MERGE_LINES: env->lines = merge_lines(env->lines, e->contents.add_merge_split_lines.lineno); count_lines++; break; case HISTORY_SPLIT_LINE: env->lines = split_line(env->lines, e->contents.add_merge_split_lines.lineno, e->contents.add_merge_split_lines.split); count_lines++; break; case HISTORY_BREAK: /* Ignore break */ break; default: render_error("Unknown type %d!\n", e->type); break; } env->history = e; e = e->next; } env->line_no = env->history->line; env->col_no = env->history->col; if (env->line_no > env->line_count) env->line_no = env->line_count; if (env->line_no < 1) env->line_no = 1; if (env->col_no > env->lines[env->line_no-1]->actual) env->col_no = env->lines[env->line_no-1]->actual; if (env->col_no < 1) env->col_no = 1; env->modified = (env->history != env->last_save_history); env->loading = 0; for (int i = 0; i < env->line_count; ++i) { env->lines[i]->istate = 0; recalculate_tabs(env->lines[i]); } schedule_complete_recalc(); place_cursor_actual(); update_title(); redraw_all(); render_commandline_message("%d character%s, %d line%s changed", count_chars, (count_chars == 1) ? "" : "s", count_lines, (count_lines == 1) ? "" : "s"); } int is_whitespace(int codepoint) { return codepoint == ' ' || codepoint == '\t'; } int is_normal(int codepoint) { return isalnum(codepoint) || codepoint == '_'; } int is_special(int codepoint) { return !is_normal(codepoint) && !is_whitespace(codepoint); } BIM_ACTION(word_left, 0, "Move the cursor left to the previous word." )(void) { if (!env->lines[env->line_no-1]) return; while (env->col_no > 1 && is_whitespace(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint)) { env->col_no -= 1; } if (env->col_no == 1) { if (env->line_no == 1) goto _place; env->line_no--; env->col_no = env->lines[env->line_no-1]->actual; goto _place; } int (*inverse_comparator)(int) = is_special; if (env->col_no > 1 && is_special(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint)) { inverse_comparator = is_normal; } do { if (env->col_no > 1) { env->col_no -= 1; } } while (env->col_no > 1 && !is_whitespace(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint) && !inverse_comparator(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint)); _place: set_preferred_column(); place_cursor_actual(); } BIM_ACTION(big_word_left, 0, "Move the cursor left to the previous WORD." )(void) { int line_no = env->line_no; int col_no = env->col_no; do { col_no--; while (col_no == 0) { line_no--; if (line_no == 0) { goto_line(1); set_preferred_column(); return; } col_no = env->lines[line_no-1]->actual; } } while (isspace(env->lines[line_no-1]->text[col_no-1].codepoint)); do { col_no--; if (col_no == 0) { env->col_no = 1; env->line_no = line_no; set_preferred_column(); redraw_statusbar(); place_cursor_actual(); return; } } while (!isspace(env->lines[line_no-1]->text[col_no-1].codepoint)); env->col_no = col_no; env->line_no = line_no; set_preferred_column(); cursor_right(); } BIM_ACTION(word_right, 0, "Move the cursor right to the start of the next word." )(void) { if (!env->lines[env->line_no-1]) return; if (env->col_no >= env->lines[env->line_no-1]->actual) { /* next line */ if (env->line_no == env->line_count) return; env->line_no++; env->col_no = 0; if (env->col_no >= env->lines[env->line_no-1]->actual) { goto _place; } } if (env->col_no < env->lines[env->line_no-1]->actual && is_whitespace(env->lines[env->line_no-1]->text[env->col_no - 1].codepoint)) { while (env->col_no < env->lines[env->line_no-1]->actual && is_whitespace(env->lines[env->line_no-1]->text[env->col_no - 1].codepoint)) { env->col_no++; } goto _place; } int (*inverse_comparator)(int) = is_special; if (is_special(env->lines[env->line_no - 1]->text[env->col_no - 1].codepoint)) { inverse_comparator = is_normal; } while (env->col_no < env->lines[env->line_no-1]->actual && !is_whitespace(env->lines[env->line_no - 1]->text[env->col_no - 1].codepoint) && !inverse_comparator(env->lines[env->line_no - 1]->text[env->col_no - 1].codepoint)) { env->col_no++; } while (env->col_no < env->lines[env->line_no-1]->actual && is_whitespace(env->lines[env->line_no - 1]->text[env->col_no - 1].codepoint)) { env->col_no++; } _place: set_preferred_column(); place_cursor_actual(); } BIM_ACTION(big_word_right, 0, "Move the cursor right to the start of the next WORD." )(void) { int line_no = env->line_no; int col_no = env->col_no; do { col_no++; if (col_no > env->lines[line_no-1]->actual) { line_no++; if (line_no > env->line_count) { env->line_no = env->line_count; env->col_no = env->lines[env->line_no-1]->actual; set_preferred_column(); redraw_statusbar(); place_cursor_actual(); return; } col_no = 0; break; } } while (!isspace(env->lines[line_no-1]->text[col_no-1].codepoint)); do { col_no++; while (col_no > env->lines[line_no-1]->actual) { line_no++; if (line_no >= env->line_count) { env->col_no = env->lines[env->line_count-1]->actual; env->line_no = env->line_count; set_preferred_column(); redraw_statusbar(); place_cursor_actual(); return; } col_no = 1; } } while (isspace(env->lines[line_no-1]->text[col_no-1].codepoint)); env->col_no = col_no; env->line_no = line_no; set_preferred_column(); redraw_statusbar(); place_cursor_actual(); return; } BIM_ACTION(delete_at_cursor, ACTION_IS_RW, "Delete the character at the cursor, or merge with previous line." )(void) { if (env->col_no > 1) { line_delete(env->lines[env->line_no - 1], env->col_no - 1, env->line_no - 1); env->col_no -= 1; if (env->coffset > 0) env->coffset--; redraw_line(env->line_no-1); set_modified(); redraw_statusbar(); place_cursor_actual(); } else if (env->line_no > 1) { int tmp = env->lines[env->line_no - 2]->actual; merge_lines(env->lines, env->line_no - 1); env->line_no -= 1; env->col_no = tmp+1; set_preferred_column(); redraw_text(); set_modified(); redraw_statusbar(); place_cursor_actual(); } } BIM_ACTION(delete_word, ACTION_IS_RW, "Delete the previous word." )(void) { if (!env->lines[env->line_no-1]) return; if (env->col_no > 1) { /* Start by deleting whitespace */ while (env->col_no > 1 && is_whitespace(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint)) { line_delete(env->lines[env->line_no - 1], env->col_no - 1, env->line_no - 1); env->col_no -= 1; if (env->coffset > 0) env->coffset--; } int (*inverse_comparator)(int) = is_special; if (env->col_no > 1 && is_special(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint)) { inverse_comparator = is_normal; } do { if (env->col_no > 1) { line_delete(env->lines[env->line_no - 1], env->col_no - 1, env->line_no - 1); env->col_no -= 1; if (env->coffset > 0) env->coffset--; } } while (env->col_no > 1 && !is_whitespace(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint) && !inverse_comparator(env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint)); set_preferred_column(); redraw_text(); set_modified(); redraw_statusbar(); place_cursor_actual(); } } BIM_ACTION(insert_line_feed, ACTION_IS_RW, "Insert a line break, splitting the current line into two." )(void) { if (env->indent) { if ((env->lines[env->line_no-1]->text[env->col_no-2].flags & 0x1F) == FLAG_COMMENT && (env->lines[env->line_no-1]->text[env->col_no-2].codepoint == ' ') && (env->col_no > 3) && (env->lines[env->line_no-1]->text[env->col_no-3].codepoint == '*')) { delete_at_cursor(); } } if (env->col_no == env->lines[env->line_no - 1]->actual + 1) { env->lines = add_line(env->lines, env->line_no); } else { env->lines = split_line(env->lines, env->line_no-1, env->col_no - 1); } unhighlight_matching_paren(); env->coffset = 0; env->col_no = 1; env->line_no += 1; set_preferred_column(); add_indent(env->line_no-1,env->line_no-2,0); if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - 1) { env->offset += 1; } if (env->highlighting_paren && env->highlighting_paren > env->line_no) env->highlighting_paren++; set_modified(); } BIM_ACTION(yank_lines, 0, "Copy lines into the paste buffer." )(void) { int start = env->start_line; int end = env->line_no; if (global_config.yanks) { for (unsigned int i = 0; i < global_config.yank_count; ++i) { free(global_config.yanks[i]); } free(global_config.yanks); } int lines_to_yank; int start_point; if (start <= end) { lines_to_yank = end - start + 1; start_point = start - 1; } else { lines_to_yank = start - end + 1; start_point = end - 1; } global_config.yanks = malloc(sizeof(line_t *) * lines_to_yank); global_config.yank_count = lines_to_yank; global_config.yank_is_full_lines = 1; for (int i = 0; i < lines_to_yank; ++i) { global_config.yanks[i] = malloc(sizeof(line_t) + sizeof(char_t) * (env->lines[start_point+i]->available)); global_config.yanks[i]->available = env->lines[start_point+i]->available; global_config.yanks[i]->actual = env->lines[start_point+i]->actual; global_config.yanks[i]->istate = 0; memcpy(&global_config.yanks[i]->text, &env->lines[start_point+i]->text, sizeof(char_t) * (env->lines[start_point+i]->actual)); for (int j = 0; j < global_config.yanks[i]->actual; ++j) { global_config.yanks[i]->text[j].flags = 0; } } } /** * Helper to yank part of a line into a new yank line. */ void yank_partial_line(int yank_no, int line_no, int start_off, int count) { if (start_off + count > env->lines[line_no]->actual) { if (start_off >= env->lines[line_no]->actual) { start_off = env->lines[line_no]->actual; count = 0; } else { count = env->lines[line_no]->actual - start_off; } } global_config.yanks[yank_no] = malloc(sizeof(line_t) + sizeof(char_t) * (count + 1)); global_config.yanks[yank_no]->available = count + 1; /* ensure extra space */ global_config.yanks[yank_no]->actual = count; global_config.yanks[yank_no]->istate = 0; memcpy(&global_config.yanks[yank_no]->text, &env->lines[line_no]->text[start_off], sizeof(char_t) * count); for (int i = 0; i < count; ++i) { global_config.yanks[yank_no]->text[i].flags = 0; } } /** * Yank text... */ void yank_text(int start_line, int start_col, int end_line, int end_col) { if (global_config.yanks) { for (unsigned int i = 0; i < global_config.yank_count; ++i) { free(global_config.yanks[i]); } free(global_config.yanks); } int lines_to_yank = end_line - start_line + 1; int start_point = start_line - 1; global_config.yanks = malloc(sizeof(line_t *) * lines_to_yank); global_config.yank_count = lines_to_yank; global_config.yank_is_full_lines = 0; if (lines_to_yank == 1) { yank_partial_line(0, start_point, start_col - 1, (end_col - start_col + 1)); } else { yank_partial_line(0, start_point, start_col - 1, (env->lines[start_point]->actual - start_col + 1)); /* Yank middle lines */ for (int i = 1; i < lines_to_yank - 1; ++i) { global_config.yanks[i] = malloc(sizeof(line_t) + sizeof(char_t) * (env->lines[start_point+i]->available)); global_config.yanks[i]->available = env->lines[start_point+i]->available; global_config.yanks[i]->actual = env->lines[start_point+i]->actual; global_config.yanks[i]->istate = 0; memcpy(&global_config.yanks[i]->text, &env->lines[start_point+i]->text, sizeof(char_t) * (env->lines[start_point+i]->actual)); for (int j = 0; j < global_config.yanks[i]->actual; ++j) { global_config.yanks[i]->text[j].flags = 0; } } /* Yank end line */ yank_partial_line(lines_to_yank-1, end_line - 1, 0, end_col); } } BIM_ACTION(delete_at_column, ARG_IS_CUSTOM | ACTION_IS_RW, "Delete from the current column backwards (`<backspace>`) or forwards (`<del>`)." )(int direction) { if (direction == -1 && env->sel_col <= 0) return; int prev_width = 0; int s = (env->line_no < env->start_line) ? env->line_no : env->start_line; int e = (env->line_no < env->start_line) ? env->start_line : env->line_no; for (int i = s; i <= e; i++) { line_t * line = env->lines[i - 1]; int _x = 0; int col = 1; int j = 0; for (; j < line->actual; ++j) { char_t * c = &line->text[j]; _x += c->display_width; col = j+1; if (_x > env->sel_col) break; prev_width = c->display_width; } if ((direction == -1) && (_x == env->sel_col && j == line->actual)) { line_delete(line, line->actual, i - 1); set_modified(); } else if (_x > env->sel_col) { line_delete(line, col - (direction == -1 ? 1 : 0), i - 1); set_modified(); } } if (direction == -1) { env->sel_col -= prev_width; env->col_no--; } redraw_text(); } void realign_column_cursor(void) { line_t * line = env->lines[env->line_no - 1]; int _x = 0, col = 1, j = 0; for (; j < line->actual; ++j) { char_t * c = &line->text[j]; _x += c->display_width; col = j + 1; if (_x > env->sel_col) break; } env->col_no = col; } BIM_ACTION(column_left, 0, "Move the column cursor left.")(void) { if (env->sel_col > 0) { env->sel_col -= 1; env->preferred_column = env->sel_col; /* Figure out where the cursor should be */ realign_column_cursor(); redraw_all(); } } BIM_ACTION(column_right, 0, "Move the column cursor right.")(void) { env->sel_col += 1; env->preferred_column = env->sel_col; /* Figure out where the cursor should be */ realign_column_cursor(); redraw_all(); } BIM_ACTION(column_up, 0, "Move the column cursor up.")(void) { if (env->line_no > 1 && env->start_line > 1) { env->line_no--; env->start_line--; /* Figure out where the cursor should be */ realign_column_cursor(); place_cursor_actual(); redraw_all(); } } BIM_ACTION(column_down, 0, "Move the column cursor down.")(void) { if (env->line_no < env->line_count && env->start_line < env->line_count) { env->line_no++; env->start_line++; /* Figure out where the cursor should be */ realign_column_cursor(); place_cursor_actual(); redraw_all(); } } uint32_t * get_word_under_cursor(void) { /* Figure out size */ int c_before = 0; int c_after = 0; int i = env->col_no; while (i > 0) { if (!simple_keyword_qualifier(env->lines[env->line_no-1]->text[i-1].codepoint)) break; c_before++; i--; } i = env->col_no+1; while (i < env->lines[env->line_no-1]->actual+1) { if (!simple_keyword_qualifier(env->lines[env->line_no-1]->text[i-1].codepoint)) break; c_after++; i++; } if (!c_before && !c_after) return NULL; /* Populate with characters */ uint32_t * out = malloc(sizeof(uint32_t) * (c_before+c_after+1)); int j = 0; while (c_before) { out[j] = env->lines[env->line_no-1]->text[env->col_no-c_before].codepoint; c_before--; j++; } int x = 0; while (c_after) { out[j] = env->lines[env->line_no-1]->text[env->col_no+x].codepoint; j++; x++; c_after--; } out[j] = 0; return out; } BIM_ACTION(search_under_cursor, 0, "Search for the word currently under the cursor." )(void) { if (global_config.search) free(global_config.search); global_config.search = get_word_under_cursor(); /* Find it */ search_next(); } BIM_ACTION(find_character_forward, ARG_IS_PROMPT | ARG_IS_INPUT, "Find a character forward on the current line and place the cursor on (`f`) or before (`t`) it." )(int type, int c) { for (int i = env->col_no+1; i <= env->lines[env->line_no-1]->actual; ++i) { if (env->lines[env->line_no-1]->text[i-1].codepoint == c) { env->col_no = i - !!(type == 't'); place_cursor_actual(); set_preferred_column(); return; } } } BIM_ACTION(find_character_backward, ARG_IS_PROMPT | ARG_IS_INPUT, "Find a character backward on the current line and place the cursor on (`F`) or after (`T`) it." )(int type, int c) { for (int i = env->col_no-1; i >= 1; --i) { if (env->lines[env->line_no-1]->text[i-1].codepoint == c) { env->col_no = i + !!(type == 'T'); place_cursor_actual(); set_preferred_column(); return; } } } /** * Clear the navigation number buffer */ void reset_nav_buffer(int c) { if (c == KEY_TIMEOUT) return; if (nav_buffer && (c < '0' || c > '9')) { nav_buffer = 0; redraw_commandline(); } } /** * Determine if a column + line number are within range of the * current character selection specified by start_line, etc. * * Used to determine how syntax flags should be set when redrawing * selected text in CHAR SELECTION mode. */ int point_in_range(int start_line, int end_line, int start_col, int end_col, int line, int col) { if (start_line == end_line) { if ( end_col < start_col) { int tmp = end_col; end_col = start_col; start_col = tmp; } return (col >= start_col && col <= end_col); } if (start_line > end_line) { int tmp = end_line; end_line = start_line; start_line = tmp; tmp = end_col; end_col = start_col; start_col = tmp; } if (line < start_line || line > end_line) return 0; if (line == start_line) { return col >= start_col; } if (line == end_line) { return col <= end_col; } return 1; } /** * Macro for redrawing selected lines with appropriate highlighting. */ #define _redraw_line(line, force_start_line) \ do { \ if (!(force_start_line) && (line) == env->start_line) break; \ if ((line) > env->line_count + 1) { \ if ((line) - env->offset - 1 < global_config.term_height - global_config.bottom_size - 1) { \ draw_excess_line((line) - env->offset - 1); \ } \ break; \ } \ if ((env->line_no < env->start_line && ((line) < env->line_no || (line) > env->start_line)) || \ (env->line_no > env->start_line && ((line) > env->line_no || (line) < env->start_line)) || \ (env->line_no == env->start_line && (line) != env->start_line)) { \ for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \ env->lines[(line)-1]->text[j].flags &= ~(FLAG_SELECT); \ } \ } else { \ for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \ env->lines[(line)-1]->text[j].flags |= FLAG_SELECT; \ } \ } \ redraw_line((line)-1); \ } while (0) #define _redraw_line_char(line, force_start_line) \ do { \ if (!(force_start_line) && (line) == env->start_line) break; \ if ((line) > env->line_count + 1) { \ if ((line) - env->offset - 1 < global_config.term_height - global_config.bottom_size - 1) { \ draw_excess_line((line) - env->offset - 1); \ } \ break; \ } \ if ((env->line_no < env->start_line && ((line) < env->line_no || (line) > env->start_line)) || \ (env->line_no > env->start_line && ((line) > env->line_no || (line) < env->start_line)) || \ (env->line_no == env->start_line && (line) != env->start_line)) { \ /* Line is completely outside selection */ \ for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \ env->lines[(line)-1]->text[j].flags &= ~(FLAG_SELECT); \ } \ } else { \ if ((line) == env->start_line || (line) == env->line_no) { \ for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \ env->lines[(line)-1]->text[j].flags &= ~(FLAG_SELECT); \ } \ } \ for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \ if (point_in_range(env->start_line, env->line_no,env->start_col, env->col_no, (line), j+1)) { \ env->lines[(line)-1]->text[j].flags |= FLAG_SELECT; \ } \ } \ } \ redraw_line((line)-1); \ } while (0) #define _redraw_line_col(line, force_start_line) \ do {\ if (!(force_start_line) && (line) == env->start_line) break; \ if ((line) > env->line_count + 1) { \ if ((line) - env->offset - 1 < global_config.term_height - global_config.bottom_size - 1) { \ draw_excess_line((line) - env->offset - 1); \ } \ break; \ } \ redraw_line((line)-1); \ } while (0) BIM_ACTION(adjust_indent, ARG_IS_CUSTOM | ACTION_IS_RW, "Adjust the indentation on the selected lines (`<tab>` for deeper, `<shift-tab>` for shallower)." )(int direction) { int lines_to_cover = 0; int start_point = 0; if (env->start_line <= env->line_no) { start_point = env->start_line - 1; lines_to_cover = env->line_no - env->start_line + 1; } else { start_point = env->line_no - 1; lines_to_cover = env->start_line - env->line_no + 1; } for (int i = 0; i < lines_to_cover; ++i) { if (env->lines[start_point + i]->actual < 1) continue; if (direction == -1) { if (env->tabs) { if (env->lines[start_point + i]->text[0].codepoint == '\t') { line_delete(env->lines[start_point + i],1,start_point+i); _redraw_line(start_point+i+1,1); } } else { if (env->lines[start_point + i]->text[0].codepoint == '\t') { line_delete(env->lines[start_point + i],1,start_point+i); _redraw_line(start_point+i+1,1); } else { for (int j = 0; j < env->tabstop; ++j) { if (env->lines[start_point + i]->text[0].codepoint == ' ') { line_delete(env->lines[start_point + i],1,start_point+i); } } } _redraw_line(start_point+i+1,1); } } else if (direction == 1) { if (env->tabs) { char_t c; c.codepoint = '\t'; c.display_width = env->tabstop; c.flags = FLAG_SELECT; env->lines[start_point + i] = line_insert(env->lines[start_point + i], c, 0, start_point + i); } else { for (int j = 0; j < env->tabstop; ++j) { char_t c; c.codepoint = ' '; c.display_width = 1; c.flags = FLAG_SELECT; env->lines[start_point + i] = line_insert(env->lines[start_point + i], c, 0, start_point + i); } } _redraw_line(start_point+i+1,1); } } if (env->col_no > env->lines[env->line_no-1]->actual) { env->col_no = env->lines[env->line_no-1]->actual; } set_preferred_column(); set_modified(); } void recalculate_selected_lines(void) { int start = env->line_no < env->start_line ? env->line_no : env->start_line; int end = env->line_no > env->start_line ? env->line_no : env->start_line; if (start < 1) start = 1; if (start > env->line_count) start = env->line_count; if (end < 1) end = 1; if (end > env->line_count) end = env->line_count; for (int i = (start > 1) ? (start-1) : (start); i <= end; ++i) { for (int j = 0; j < env->lines[i-1]->actual; j++) { env->lines[i-1]->text[j].flags &= ~(FLAG_SELECT); } } redraw_all(); } BIM_ACTION(enter_line_selection, 0, "Enter line selection mode." )(void) { /* Set mode */ env->mode = MODE_LINE_SELECTION; /* Store start position */ env->start_line = env->line_no; env->prev_line = env->start_line; env->start_col = env->col_no; /* Redraw commandline to get -- LINE SELECTION -- text */ redraw_commandline(); unhighlight_matching_paren(); /* Set this line as selected for syntax highlighting */ for (int j = 0; j < env->lines[env->line_no-1]->actual; ++j) { env->lines[env->line_no-1]->text[j].flags |= FLAG_SELECT; } /* And redraw it */ redraw_line(env->line_no-1); } BIM_ACTION(switch_selection_mode, ARG_IS_CUSTOM, "Swap between LINE and CHAR selection modes." )(int mode) { env->mode = mode; if (mode == MODE_LINE_SELECTION) { int start = env->line_no < env->start_line ? env->line_no : env->start_line; int end = env->line_no > env->start_line ? env->line_no : env->start_line; for (int i = start; i <= end; ++i) { _redraw_line(i, 1); } } else if (mode == MODE_CHAR_SELECTION) { int start = env->line_no < env->start_line ? env->line_no : env->start_line; int end = env->line_no > env->start_line ? env->line_no : env->start_line; for (int i = start; i <= end; ++i) { _redraw_line_char(i, 1); } } } BIM_ACTION(delete_and_yank_lines, 0, "Delete and yank the selected lines." )(void) { yank_lines(); if (env->start_line <= env->line_no) { int lines_to_delete = env->line_no - env->start_line + 1; for (int i = 0; i < lines_to_delete; ++i) { env->lines = remove_line(env->lines, env->start_line-1); } env->line_no = env->start_line; } else { int lines_to_delete = env->start_line - env->line_no + 1; for (int i = 0; i < lines_to_delete; ++i) { env->lines = remove_line(env->lines, env->line_no-1); } } if (env->line_no > env->line_count) { env->line_no = env->line_count; } if (env->col_no > env->lines[env->line_no-1]->actual) { env->col_no = env->lines[env->line_no-1]->actual; } set_preferred_column(); set_modified(); } BIM_ACTION(enter_insert, ACTION_IS_RW, "Enter insert mode." )(void) { env->mode = MODE_INSERT; set_history_break(); } BIM_ACTION(delete_lines_and_enter_insert, ACTION_IS_RW, "Delete and yank the selected lines and then enter insert mode." )(void) { delete_and_yank_lines(); env->lines = add_line(env->lines, env->line_no-1); redraw_text(); env->mode = MODE_INSERT; } BIM_ACTION(replace_chars_in_line, ARG_IS_PROMPT | ACTION_IS_RW, "Replace characters in the selected lines." )(int c) { if (c >= KEY_ESCAPE) { render_error("Invalid key for replacement"); return; } char_t _c = {codepoint_width(c), 0, c}; int start_point = env->start_line < env->line_no ? env->start_line : env->line_no; int end_point = env->start_line < env->line_no ? env->line_no : env->start_line; for (int line = start_point; line <= end_point; ++line) { for (int i = 0; i < env->lines[line-1]->actual; ++i) { line_replace(env->lines[line-1], _c, i, line-1); } } } BIM_ACTION(leave_selection, 0, "Leave selection modes and return to normal mode." )(void) { set_history_break(); env->mode = MODE_NORMAL; recalculate_selected_lines(); } BIM_ACTION(insert_char_at_column, ARG_IS_INPUT | ACTION_IS_RW, "Insert a character on all lines at the current column." )(int c) { char_t _c; _c.codepoint = c; _c.flags = 0; _c.display_width = codepoint_width(c); int inserted_width = 0; /* For each line */ int s = (env->line_no < env->start_line) ? env->line_no : env->start_line; int e = (env->line_no < env->start_line) ? env->start_line : env->line_no; for (int i = s; i <= e; i++) { line_t * line = env->lines[i - 1]; int _x = 0; int col = 1; int j = 0; for (; j < line->actual; ++j) { char_t * c = &line->text[j]; _x += c->display_width; col = j+1; if (_x > env->sel_col) break; } if ((_x == env->sel_col && j == line->actual)) { _x = env->sel_col + 1; col = line->actual + 1; } if (_x > env->sel_col) { line_t * nline = line_insert(line, _c, col - 1, i - 1); if (line != nline) { env->lines[i - 1] = nline; line = nline; } set_modified(); } recalculate_tabs(line); inserted_width = line->text[col-1].display_width; if (i == env->line_no) env->col_no = col + 1; } env->sel_col += inserted_width; env->preferred_column = env->sel_col; place_cursor_actual(); } BIM_ACTION(enter_col_insert, ACTION_IS_RW, "Enter column insert mode." )(void) { env->mode = MODE_COL_INSERT; } BIM_ACTION(enter_col_insert_after, ACTION_IS_RW, "Enter column insert mode after the selected column." )(void) { env->sel_col += 1; enter_col_insert(); } BIM_ACTION(enter_col_selection, 0, "Enter column selection mode." )(void) { /* Set mode */ env->mode = MODE_COL_SELECTION; /* Store cursor */ env->start_line = env->line_no; env->sel_col = env->preferred_column; env->prev_line = env->start_line; /* Redraw commandline */ redraw_commandline(); /* Nothing else to do here; rely on cursor */ } BIM_ACTION(yank_characters, 0, "Yank the selected characters to the paste buffer." )(void) { int end_line = env->line_no; int end_col = env->col_no; if (env->start_line == end_line) { if (env->start_col > end_col) { int tmp = env->start_col; env->start_col = end_col; end_col = tmp; } } else if (env->start_line > end_line) { int tmp = env->start_line; env->start_line = end_line; end_line = tmp; tmp = env->start_col; env->start_col = end_col; end_col = tmp; } yank_text(env->start_line, env->start_col, end_line, end_col); } BIM_ACTION(delete_and_yank_chars, ACTION_IS_RW, "Delete and yank the selected characters." )(void) { int end_line = env->line_no; int end_col = env->col_no; if (env->start_line == end_line) { if (env->start_col > end_col) { int tmp = env->start_col; env->start_col = end_col; end_col = tmp; } yank_text(env->start_line, env->start_col, end_line, end_col); for (int i = env->start_col; i <= end_col; ++i) { line_delete(env->lines[env->start_line-1], env->start_col, env->start_line - 1); } env->col_no = env->start_col; } else { if (env->start_line > end_line) { int tmp = env->start_line; env->start_line = end_line; end_line = tmp; tmp = env->start_col; env->start_col = end_col; end_col = tmp; } /* Copy lines */ yank_text(env->start_line, env->start_col, end_line, end_col); /* Delete lines */ for (int i = env->start_line+1; i < end_line; ++i) { env->lines = remove_line(env->lines, env->start_line); } /* end_line is no longer valid; should be start_line+1*/ /* Delete from env->start_col forward */ int tmp = env->lines[env->start_line-1]->actual; for (int i = env->start_col; i <= tmp; ++i) { line_delete(env->lines[env->start_line-1], env->start_col, env->start_line - 1); } for (int i = 1; i <= end_col; ++i) { line_delete(env->lines[env->start_line], 1, env->start_line); } /* Merge start and end lines */ merge_lines(env->lines, env->start_line); env->line_no = env->start_line; env->col_no = env->start_col; } if (env->line_no > env->line_count) { env->line_no = env->line_count; } set_preferred_column(); set_modified(); } BIM_ACTION(delete_chars_and_enter_insert, ACTION_IS_RW, "Delete and yank the selected characters and then enter insert mode." )(void) { delete_and_yank_chars(); redraw_text(); enter_insert(); } BIM_ACTION(replace_chars, ARG_IS_PROMPT | ACTION_IS_RW, "Replace the selected characters." )(int c) { if (c >= KEY_ESCAPE) { render_error("Invalid key for replacement"); return; } char_t _c = {codepoint_width(c), 0, c}; /* This should probably be a function line "do_over_range" or something */ if (env->start_line == env->line_no) { int s = (env->start_col < env->col_no) ? env->start_col : env->col_no; int e = (env->start_col < env->col_no) ? env->col_no : env->start_col; for (int i = s; i <= e; ++i) { line_replace(env->lines[env->start_line-1], _c, i-1, env->start_line-1); } redraw_text(); } else { if (env->start_line < env->line_no) { for (int s = env->start_col-1; s < env->lines[env->start_line-1]->actual; ++s) { line_replace(env->lines[env->start_line-1], _c, s, env->start_line-1); } for (int line = env->start_line + 1; line < env->line_no; ++line) { for (int i = 0; i < env->lines[line-1]->actual; ++i) { line_replace(env->lines[line-1], _c, i, line-1); } } for (int s = 0; s < env->col_no; ++s) { line_replace(env->lines[env->line_no-1], _c, s, env->line_no-1); } } else { for (int s = env->col_no-1; s < env->lines[env->line_no-1]->actual; ++s) { line_replace(env->lines[env->line_no-1], _c, s, env->line_no-1); } for (int line = env->line_no + 1; line < env->start_line; ++line) { for (int i = 0; i < env->lines[line-1]->actual; ++i) { line_replace(env->lines[line-1], _c, i, line-1); } } for (int s = 0; s < env->start_col; ++s) { line_replace(env->lines[env->start_line-1], _c, s, env->start_line-1); } } } } BIM_ACTION(enter_char_selection, 0, "Enter character selection mode." )(void) { /* Set mode */ env->mode = MODE_CHAR_SELECTION; /* Set cursor positions */ env->start_line = env->line_no; env->start_col = env->col_no; env->prev_line = env->start_line; /* Redraw commandline for -- CHAR SELECTION -- */ redraw_commandline(); unhighlight_matching_paren(); /* Select single character */ env->lines[env->line_no-1]->text[env->col_no-1].flags |= FLAG_SELECT; redraw_line(env->line_no-1); } BIM_ACTION(insert_at_end_of_selection, ACTION_IS_RW, "Move the cursor to the end of the selection and enter insert mode." )(void) { recalculate_selected_lines(); if (env->line_no == env->start_line) { env->col_no = env->col_no > env->start_col ? env->col_no + 1 : env->start_col + 1; } else if (env->line_no < env->start_line) { env->col_no = env->start_col + 1; env->line_no = env->start_line; } else { env->col_no += 1; } env->mode = MODE_INSERT; } void free_completion_match(struct completion_match * match) { if (match->string) free(match->string); if (match->file) free(match->file); if (match->search) free(match->search); } /** * Read ctags file to find matches for a symbol */ int read_tags(uint32_t * comp, struct completion_match **matches, int * matches_count, int complete_match) { int _matches_len = 4; int *matches_len = &_matches_len; *matches_count = 0; *matches = malloc(sizeof(struct completion_match) * (*matches_len)); FILE * tags = fopen("tags","r"); if (tags) { char tmp[4096]; /* max line */ while (!feof(tags) && fgets(tmp, 4096, tags)) { if (tmp[0] == '!') continue; int i = 0; while (comp[i] && comp[i] == (unsigned int)tmp[i]) i++; if (comp[i] == '\0') { if (complete_match && tmp[i] != '\t') continue; int j = i; while (tmp[j] != '\t' && tmp[j] != '\n' && tmp[j] != '\0') j++; tmp[j] = '\0'; j++; char * file = &tmp[j]; while (tmp[j] != '\t' && tmp[j] != '\n' && tmp[j] != '\0') j++; tmp[j] = '\0'; j++; char * search = &tmp[j]; while (!(tmp[j] == '/' && tmp[j+1] == ';' && tmp[j+2] == '"' && tmp[j+3] == '\t') /* /normal searches/ */ && !(tmp[j] == ';' && tmp[j+1] == '"' && tmp[j+2] == '\t') /* Old ctags line number searches */ && (tmp[j] != '\n' && tmp[j] != '\0')) j++; tmp[j] = '\0'; j++; add_match(tmp,file,search); } } fclose(tags); } if (env->syntax && env->syntax->completion_matcher) { env->syntax->completion_matcher(comp,matches,matches_count,complete_match,matches_len, env); } return 0; } /** * Draw an autocomplete popover with matches. */ void draw_completion_matches(uint32_t * tmp, struct completion_match *matches, int matches_count, int index) { int original_length = 0; while (tmp[original_length]) original_length++; int max_width = 0; for (int i = 0; i < matches_count; ++i) { /* TODO unicode width */ unsigned int my_width = strlen(matches[i].string) + (matches[i].file ? strlen(matches[i].file) + 1 : 0); if (my_width > (unsigned int)max_width) { max_width = my_width; } } /* Figure out how much space we have to display the window */ int cursor_y = env->line_no - env->offset + global_config.tabs_visible; int max_y = global_config.term_height - global_config.bottom_size - cursor_y; /* Find a good place to put the box horizontally */ int num_size = num_width() + gutter_width(); int x = num_size + 1 - env->coffset; /* Determine where the cursor is physically */ for (int i = 0; i < env->col_no - 1 - original_length; ++i) { char_t * c = &env->lines[env->line_no-1]->text[i]; x += c->display_width; } int box_width = max_width; int box_x = x; int box_y = cursor_y + 1; if (max_width > env->width - num_width() - gutter_width()) { box_width = env->width - num_width() - gutter_width(); box_x = num_width() + gutter_width() + 1; } else if (env->width - x < max_width) { box_width = max_width; box_x = env->width - max_width; } int max_count = (max_y < matches_count) ? max_y - 1 : matches_count; for (int x = index; x < max_count+index; ++x) { int i = x % matches_count; place_cursor(box_x + env->left, box_y+x-index); set_colors(COLOR_KEYWORD, COLOR_STATUS_BG); /* TODO wide characters */ int match_width = strlen(matches[i].string); int file_width = matches[i].file ? strlen(matches[i].file) : 0; for (int j = 0; j < box_width; ++j) { if (j == original_length) set_colors(i == index ? COLOR_NUMERAL : COLOR_STATUS_FG, COLOR_STATUS_BG); if (j == match_width) set_colors(COLOR_TYPE, COLOR_STATUS_BG); if (j < match_width) printf("%c", matches[i].string[j]); else if (j > match_width && j - match_width - 1 < file_width) printf("%c", matches[i].file[j-match_width-1]); else printf(" "); } } if (max_count == 0) { place_cursor(box_x + env->left, box_y); set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG); printf(" (no matches) "); } else if (max_count != matches_count) { place_cursor(box_x + env->left, box_y+max_count); set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG); printf(" (%d more) ", matches_count-max_count); } } /** * Autocomplete words (function/variable names, etc.) in input mode. */ int omni_complete(int quit_quietly_on_none) { int retval = 0; int index = 0; int c; int (*qualifier)(int c) = simple_keyword_qualifier; if (env->syntax && env->syntax->completion_qualifier) { qualifier = env->syntax->completion_qualifier; } /* Pull the word from before the cursor */ int c_before = 0; int i = env->col_no-1; while (i > 0) { int c = env->lines[env->line_no-1]->text[i-1].codepoint; if (!qualifier(c)) break; c_before++; i--; } if (!c_before && quit_quietly_on_none) return 0; /* Populate with characters */ uint32_t * tmp = malloc(sizeof(uint32_t) * (c_before+1)); int j = 0; while (c_before) { tmp[j] = env->lines[env->line_no-1]->text[env->col_no-c_before-1].codepoint; c_before--; j++; } tmp[j] = 0; /* * TODO matches should probably be a struct with more data than just * the matching string; maybe offset where the needle was found, * class information, source file information - anything we can extract * from ctags, but also other information for other sources of completion. */ struct completion_match *matches; int matches_count; /* TODO just reading ctags is rather mediocre; can we do something cool here? */ if (read_tags(tmp, &matches, &matches_count, 0)) { goto _completion_done; } /* Draw box with matches at cursor-width(tmp) */ if (quit_quietly_on_none && matches_count == 0) { free(tmp); free(matches); return 0; } draw_completion_matches(tmp, matches, matches_count, 0); _completion_done: place_cursor_actual(); while (1) { c = bim_getch(); if (c == -1) continue; if (matches_count < 1) { redraw_all(); break; } if (c == 15) { index = (index + 1) % matches_count; draw_completion_matches(tmp, matches, matches_count, index); place_cursor_actual(); continue; } else if (c == '\t') { for (unsigned int i = j; i < strlen(matches[index].string); ++i) { insert_char(matches[index].string[i]); } set_preferred_column(); redraw_text(); place_cursor_actual(); goto _finish_completion; } else if (isgraph(c) && c != '}') { /* insert and continue matching */ insert_char(c); set_preferred_column(); redraw_text(); place_cursor_actual(); retval = 1; goto _finish_completion; } else if (c == DELETE_KEY || c == BACKSPACE_KEY) { delete_at_cursor(); set_preferred_column(); redraw_text(); place_cursor_actual(); retval = 1; goto _finish_completion; } /* TODO: Keyboard navigation of the matches list would be nice */ redraw_all(); break; } bim_unget(c); _finish_completion: for (int i = 0; i < matches_count; ++i) { free_completion_match(&matches[i]); } free(matches); free(tmp); return retval; } /** * Set the search string from a UTF-8 sequence. * Since the search string is normally a series of codepoints, this saves * some effort when trying to search for things we pulled from the outside world. * (eg., ctags search terms) */ void set_search_from_bytes(char * bytes) { if (global_config.search) free(global_config.search); global_config.search = malloc(sizeof(uint32_t) * (strlen(bytes) + 1)); uint32_t * s = global_config.search; char * tmp = bytes; uint32_t c, istate = 0; while (*tmp) { if (!decode(&istate, &c, *tmp)) { *s = c; s++; *s = 0; } else if (istate == UTF8_REJECT) { istate = 0; } tmp++; } } BIM_ACTION(goto_definition, 0, "Jump to the definition of the word under under cursor." )(void) { uint32_t * word = get_word_under_cursor(); if (!word) { render_error("No match"); return; } struct completion_match *matches; int matches_count; if (read_tags(word, &matches, &matches_count, 1)) { render_error("No tags file"); goto _done; } if (!matches_count) { render_error("No match"); goto _done; } #define _perform_correct_search(i) do { \ if (matches[i].search[0] == '/') { \ set_search_from_bytes(&matches[i].search[1]); \ search_next(); \ } else { \ goto_line(atoi(matches[i].search)); \ } \ } while (0) if (env->file_name && !strcmp(matches[0].file, env->file_name)) { _perform_correct_search(0); } else { /* Check if there were other matches that are in this file */ for (int i =1; env->file_name && i < matches_count; ++i) { if (!strcmp(matches[i].file, env->file_name)) { _perform_correct_search(i); goto _done; } } /* Check buffers */ for (int i = 0; i < buffers_len; ++i) { if (buffers[i]->file_name && !strcmp(matches[0].file,buffers[i]->file_name)) { if (left_buffer && buffers[i] != left_buffer && buffers[i] != right_buffer) unsplit(); env = buffers[i]; redraw_tabbar(); _perform_correct_search(i); goto _done; } } /* Okay, let's try opening */ buffer_t * old_buf = env; open_file(matches[0].file); if (env != old_buf) { _perform_correct_search(0); } else { render_error("Could not locate file containing definition"); } } _done: for (int i = 0; i < matches_count; ++i) { free_completion_match(&matches[i]); } free(matches); free(word); } /** * Read one codepoint, with verbatim support. */ int read_one_character(char * message) { /* Read one character and replace */ if (!global_config.overlay_mode) { render_commandline_message(message); place_cursor_actual(); } int c; while ((c = bim_getkey(DEFAULT_KEY_WAIT))) { if (c == KEY_TIMEOUT) continue; if (c == KEY_CTRL_V) { if (!global_config.overlay_mode) { render_commandline_message(message); printf(" ^V"); place_cursor_actual(); } while ((c = bim_getch()) == -1); break; } break; } redraw_commandline(); return c; } int read_one_byte(char * message) { if (!global_config.overlay_mode) { render_commandline_message(message); place_cursor_actual(); } int c; while ((c = bim_getch())) { if (c == -1) continue; break; } redraw_commandline(); return c; } BIM_ACTION(cursor_left_with_wrap, 0, "Move the cursor one position left, wrapping to the previous line." )(void) { if (env->line_no > 1 && env->col_no == 1) { env->line_no--; env->col_no = env->lines[env->line_no-1]->actual; set_preferred_column(); place_cursor_actual(); } else { cursor_left(); } } BIM_ACTION(prepend_and_insert, ACTION_IS_RW, "Insert a new line before the current line and enter insert mode." )(void) { set_history_break(); env->lines = add_line(env->lines, env->line_no-1); env->col_no = 1; add_indent(env->line_no-1,env->line_no,0); if (env->highlighting_paren && env->highlighting_paren > env->line_no) env->highlighting_paren++; redraw_text(); set_preferred_column(); set_modified(); place_cursor_actual(); env->mode = MODE_INSERT; } BIM_ACTION(append_and_insert, ACTION_IS_RW, "Insert a new line after the current line and enter insert mode." )(void) { set_history_break(); unhighlight_matching_paren(); env->lines = add_line(env->lines, env->line_no); env->col_no = 1; env->line_no += 1; add_indent(env->line_no-1,env->line_no-2,0); set_preferred_column(); if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - 1) { env->offset += 1; } if (env->highlighting_paren && env->highlighting_paren > env->line_no) env->highlighting_paren++; redraw_text(); set_modified(); place_cursor_actual(); env->mode = MODE_INSERT; } BIM_ACTION(insert_after_cursor, ACTION_IS_RW, "Place the cursor after the selected character and enter insert mode." )(void) { if (env->col_no < env->lines[env->line_no-1]->actual + 1) { env->col_no += 1; } enter_insert(); } BIM_ACTION(delete_forward, ACTION_IS_RW, "Delete the character under the cursor." )(void) { if (env->col_no <= env->lines[env->line_no-1]->actual) { line_delete(env->lines[env->line_no-1], env->col_no, env->line_no-1); redraw_text(); } else if (env->col_no == env->lines[env->line_no-1]->actual + 1 && env->line_count > env->line_no) { merge_lines(env->lines, env->line_no); redraw_text(); } set_modified(); redraw_statusbar(); place_cursor_actual(); } BIM_ACTION(delete_forward_and_insert, ACTION_IS_RW, "Delete the character under the cursor and enter insert mode." )(void) { set_history_break(); delete_forward(); env->mode = MODE_INSERT; } BIM_ACTION(paste, ARG_IS_CUSTOM | ACTION_IS_RW, "Paste yanked text before (`P`) or after (`p`) the cursor." )(int direction) { if (global_config.yanks) { env->slowop = 1; if (!global_config.yank_is_full_lines) { /* Handle P for paste before, p for past after */ int target_column = (direction == -1 ? (env->col_no) : (env->col_no+1)); if (target_column > env->lines[env->line_no-1]->actual + 1) { target_column = env->lines[env->line_no-1]->actual + 1; } if (global_config.yank_count > 1) { /* Spit the current line at the current position */ env->lines = split_line(env->lines, env->line_no - 1, target_column - 1); /* Split after */ } /* Insert first line at current position */ for (int i = 0; i < global_config.yanks[0]->actual; ++i) { env->lines[env->line_no - 1] = line_insert(env->lines[env->line_no - 1], global_config.yanks[0]->text[i], target_column + i - 1, env->line_no - 1); } if (global_config.yank_count > 1) { /* Insert full lines */ for (unsigned int i = 1; i < global_config.yank_count - 1; ++i) { env->lines = add_line(env->lines, env->line_no); } for (unsigned int i = 1; i < global_config.yank_count - 1; ++i) { replace_line(env->lines, env->line_no + i - 1, global_config.yanks[i]); } /* Insert characters from last line into (what was) the next line */ for (int i = 0; i < global_config.yanks[global_config.yank_count-1]->actual; ++i) { env->lines[env->line_no + global_config.yank_count - 2] = line_insert(env->lines[env->line_no + global_config.yank_count - 2], global_config.yanks[global_config.yank_count-1]->text[i], i, env->line_no + global_config.yank_count - 2); } } } else { /* Insert full lines */ for (unsigned int i = 0; i < global_config.yank_count; ++i) { env->lines = add_line(env->lines, env->line_no - (direction == -1 ? 1 : 0)); } for (unsigned int i = 0; i < global_config.yank_count; ++i) { replace_line(env->lines, env->line_no - (direction == -1 ? 1 : 0) + i, global_config.yanks[i]); } } env->slowop = 0; schedule_complete_recalc(); /* Recalculate whole document syntax */ if (direction == 1) { if (global_config.yank_is_full_lines) { env->line_no += 1; } else { if (global_config.yank_count == 1) { env->col_no = env->col_no + global_config.yanks[0]->actual; } else { env->line_no = env->line_no + global_config.yank_count - 1; env->col_no = global_config.yanks[global_config.yank_count-1]->actual; } } } if (global_config.yank_is_full_lines) { env->col_no = 1; for (int i = 0; i < env->lines[env->line_no-1]->actual; ++i) { if (!is_whitespace(env->lines[env->line_no-1]->text[i].codepoint)) { env->col_no = i + 1; break; } } } set_history_break(); set_modified(); redraw_all(); } } BIM_ACTION(insert_at_end, ACTION_IS_RW, "Move the cursor to the end of the current line and enter insert mode." )(void) { env->col_no = env->lines[env->line_no-1]->actual+1; env->mode = MODE_INSERT; set_history_break(); } BIM_ACTION(enter_replace, ACTION_IS_RW, "Enter replace mode." )(void) { env->mode = MODE_REPLACE; set_history_break(); } BIM_ACTION(toggle_numbers, 0, "Toggle the display of line numbers." )(void) { env->numbers = !env->numbers; redraw_all(); place_cursor_actual(); } BIM_ACTION(toggle_gutter, 0, "Toggle the display of the revision status gutter." )(void) { env->gutter = !env->gutter; redraw_all(); place_cursor_actual(); } BIM_ACTION(toggle_indent, 0, "Toggle smart indentation." )(void) { env->indent = !env->indent; redraw_statusbar(); place_cursor_actual(); } BIM_ACTION(toggle_smartcomplete, 0, "Toggle smart completion." )(void) { global_config.smart_complete = !global_config.smart_complete; redraw_statusbar(); place_cursor_actual(); } BIM_ACTION(expand_split_right, 0, "Move the view split divider to the right." )(void) { global_config.split_percent += 1; update_split_size(); redraw_all(); } BIM_ACTION(expand_split_left, 0, "Move the view split divider to the left." )(void) { global_config.split_percent -= 1; update_split_size(); redraw_all(); } BIM_ACTION(go_page_up, 0, "Jump up a screenfull." )(void) { int destination = env->line_no - (global_config.term_height - 6); if (destination < 1) destination = 1; goto_line(destination); } BIM_ACTION(go_page_down, 0, "Jump down a screenfull." )(void) { goto_line(env->line_no + (global_config.term_height - 6)); } BIM_ACTION(jump_to_matching_bracket, 0, "Find and jump to the matching bracket for the character under the cursor." )(void) { recalculate_selected_lines(); int paren_line = -1, paren_col = -1; find_matching_paren(&paren_line, &paren_col, 1); if (paren_line != -1) { env->line_no = paren_line; env->col_no = paren_col; set_preferred_column(); place_cursor_actual(); redraw_statusbar(); } } BIM_ACTION(jump_to_previous_blank, 0, "Jump to the preceding blank line before the cursor." )(void) { env->col_no = 1; if (env->line_no == 1) return; do { env->line_no--; if (env->lines[env->line_no-1]->actual == 0) break; } while (env->line_no > 1); set_preferred_column(); redraw_statusbar(); } BIM_ACTION(jump_to_next_blank, 0, "Jump to the next blank line after the cursor." )(void) { env->col_no = 1; if (env->line_no == env->line_count) return; do { env->line_no++; if (env->lines[env->line_no-1]->actual == 0) break; } while (env->line_no < env->line_count); set_preferred_column(); redraw_statusbar(); } BIM_ACTION(first_non_whitespace, 0, "Jump to the first non-whitespace character in the current line." )(void) { for (int i = 0; i < env->lines[env->line_no-1]->actual; ++i) { if (!is_whitespace(env->lines[env->line_no-1]->text[i].codepoint)) { env->col_no = i + 1; break; } } set_preferred_column(); redraw_statusbar(); } BIM_ACTION(next_line_non_whitespace, 0, "Jump to the first non-whitespace character in the next next line." )(void) { if (env->line_no < env->line_count) { env->line_no++; env->col_no = 1; } else { return; } first_non_whitespace(); } BIM_ACTION(smart_backspace, ACTION_IS_RW, "Delete the preceding character, with special handling for indentation." )(void) { if (!env->tabs && env->col_no > 1) { int i; for (i = 0; i < env->col_no-1; ++i) { if (!is_whitespace(env->lines[env->line_no-1]->text[i].codepoint)) break; } if (i == env->col_no-1) { /* Backspace until aligned */ delete_at_cursor(); while (env->col_no > 1 && (env->col_no-1) % env->tabstop) { delete_at_cursor(); } return; } } delete_at_cursor(); } BIM_ACTION(perform_omni_completion, ACTION_IS_RW, "(temporary) Perform smart symbol completion from ctags." )(void) { /* This should probably be a submode */ while (omni_complete(0) == 1); } BIM_ACTION(smart_tab, ACTION_IS_RW, "Insert a tab or spaces depending on indent mode. (Use ^V <tab> to guarantee a literal tab)" )(void) { if (env->tabs) { insert_char('\t'); } else { for (int i = 0; i < env->tabstop; ++i) { insert_char(' '); } } } BIM_ACTION(smart_comment_end, ARG_IS_INPUT | ACTION_IS_RW, "Insert a `/` ending a C-style comment." )(int c) { /* smart *end* of comment anyway */ if (env->indent) { if ((env->lines[env->line_no-1]->text[env->col_no-2].flags & 0x1F) == FLAG_COMMENT && (env->lines[env->line_no-1]->text[env->col_no-2].codepoint == ' ') && (env->col_no > 3) && (env->lines[env->line_no-1]->text[env->col_no-3].codepoint == '*')) { env->col_no--; replace_char('/'); env->col_no++; place_cursor_actual(); return; } } insert_char(c); } BIM_ACTION(smart_brace_end, ARG_IS_INPUT | ACTION_IS_RW, "Insert a closing brace and smartly position it if it is the first character on a line." )(int c) { if (env->indent) { int was_whitespace = 1; for (int i = 0; i < env->lines[env->line_no-1]->actual; ++i) { if (env->lines[env->line_no-1]->text[i].codepoint != ' ' && env->lines[env->line_no-1]->text[i].codepoint != '\t') { was_whitespace = 0; break; } } insert_char(c); if (was_whitespace) { int line = -1, col = -1; env->col_no--; find_matching_paren(&line,&col, 1); if (line != -1) { line = find_brace_line_start(line, col); while (env->lines[env->line_no-1]->actual) { line_delete(env->lines[env->line_no-1], env->lines[env->line_no-1]->actual, env->line_no-1); } add_indent(env->line_no-1,line-1,1); env->col_no = env->lines[env->line_no-1]->actual + 1; insert_char(c); } } set_preferred_column(); return; } insert_char(c); } BIM_ACTION(enter_line_selection_and_cursor_up, 0, "Enter line selection and move the cursor up one line." )(void) { enter_line_selection(); cursor_up(); } BIM_ACTION(enter_line_selection_and_cursor_down, 0, "Enter line selection and move the cursor down one line." )(void) { enter_line_selection(); cursor_down(); } BIM_ACTION(shift_horizontally, ARG_IS_CUSTOM, "Shift the current line or screen view horizontally, depending on settings." )(int amount) { env->coffset += amount; if (env->coffset < 0) env->coffset = 0; redraw_text(); } static int state_before_paste = 0; static int line_before_paste = 0; BIM_ACTION(paste_begin, 0, "Begin bracketed paste; disable indentation, completion, etc.")(void) { if (global_config.smart_complete) state_before_paste |= 0x01; if (env->indent) state_before_paste |= 0x02; global_config.smart_complete = 0; env->indent = 0; env->slowop = 1; line_before_paste = env->line_no; } BIM_ACTION(paste_end, 0, "End bracketed paste; restore indentation, completion, etc.")(void) { if (state_before_paste & 0x01) global_config.smart_complete = 1; if (state_before_paste & 0x02) env->indent = 1; env->slowop = 0; int line_to_recalculate = (line_before_paste > 1 ? line_before_paste - 1 : 0); recalculate_syntax(env->lines[line_to_recalculate], line_to_recalculate); redraw_all(); } struct action_map _NORMAL_MAP[] = { {KEY_BACKSPACE, cursor_left_with_wrap, opt_rep, 0}, {'V', enter_line_selection, 0, 0}, {'v', enter_char_selection, 0, 0}, {KEY_CTRL_V, enter_col_selection, 0, 0}, {'O', prepend_and_insert, opt_rw, 0}, {'o', append_and_insert, opt_rw, 0}, {'a', insert_after_cursor, opt_rw, 0}, {'s', delete_forward_and_insert, opt_rw, 0}, {'x', delete_forward, opt_rep | opt_rw, 0}, {'P', paste, opt_arg | opt_rw, -1}, {'p', paste, opt_arg | opt_rw, 1}, {'r', replace_char, opt_char | opt_rw, 0}, {'A', insert_at_end, opt_rw, 0}, {'u', undo_history, opt_rw, 0}, {KEY_CTRL_R, redo_history, opt_rw, 0}, {KEY_CTRL_L, redraw_all, 0, 0}, {KEY_CTRL_G, goto_definition, 0, 0}, {'i', enter_insert, opt_rw, 0}, {'R', enter_replace, opt_rw, 0}, {KEY_SHIFT_UP, enter_line_selection_and_cursor_up, 0, 0}, {KEY_SHIFT_DOWN, enter_line_selection_and_cursor_down, 0, 0}, {KEY_ALT_UP, previous_tab, 0, 0}, {KEY_ALT_DOWN, next_tab, 0, 0}, {KEY_CTRL_UNDERSCORE, start_file_search, 0, 0}, {-1, NULL, 0, 0}, }; struct action_map _INSERT_MAP[] = { {KEY_ESCAPE, leave_insert, 0, 0}, {KEY_DELETE, delete_forward, 0, 0}, {KEY_CTRL_C, leave_insert, 0, 0}, {KEY_BACKSPACE, smart_backspace, 0, 0}, {KEY_ENTER, insert_line_feed, 0, 0}, {KEY_CTRL_O, perform_omni_completion, 0, 0}, {KEY_CTRL_V, insert_char, opt_byte, 0}, {KEY_CTRL_W, delete_word, 0, 0}, {'\t', smart_tab, 0, 0}, {'/', smart_comment_end, opt_arg, '/'}, {'}', smart_brace_end, opt_arg, '}'}, {KEY_PASTE_BEGIN, paste_begin, 0, 0}, {KEY_PASTE_END, paste_end, 0, 0}, {-1, NULL, 0, 0}, }; struct action_map _REPLACE_MAP[] = { {KEY_ESCAPE, leave_insert, 0, 0}, {KEY_DELETE, delete_forward, 0, 0}, {KEY_BACKSPACE, cursor_left_with_wrap, 0, 0}, {KEY_ENTER, insert_line_feed, 0, 0}, {-1, NULL, 0, 0}, }; struct action_map _LINE_SELECTION_MAP[] = { {KEY_ESCAPE, leave_selection, 0, 0}, {KEY_CTRL_C, leave_selection, 0, 0}, {'V', leave_selection, 0, 0}, {'v', switch_selection_mode, opt_arg, MODE_CHAR_SELECTION}, {'y', yank_lines, opt_norm, 0}, {KEY_BACKSPACE, cursor_left_with_wrap, 0, 0}, {'\t', adjust_indent, opt_arg | opt_rw, 1}, {KEY_SHIFT_TAB, adjust_indent, opt_arg | opt_rw, -1}, {'D', delete_and_yank_lines, opt_rw | opt_norm, 0}, {'d', delete_and_yank_lines, opt_rw | opt_norm, 0}, {'x', delete_and_yank_lines, opt_rw | opt_norm, 0}, {'s', delete_lines_and_enter_insert, opt_rw, 0}, {'r', replace_chars_in_line, opt_char | opt_rw, 0}, {KEY_SHIFT_UP, cursor_up, 0, 0}, {KEY_SHIFT_DOWN, cursor_down, 0, 0}, {-1, NULL, 0, 0}, }; struct action_map _CHAR_SELECTION_MAP[] = { {KEY_ESCAPE, leave_selection, 0, 0}, {KEY_CTRL_C, leave_selection, 0, 0}, {'v', leave_selection, 0, 0}, {'V', switch_selection_mode, opt_arg, MODE_LINE_SELECTION}, {'y', yank_characters, opt_norm, 0}, {KEY_BACKSPACE, cursor_left_with_wrap, 0, 0}, {'D', delete_and_yank_chars, opt_rw | opt_norm, 0}, {'d', delete_and_yank_chars, opt_rw | opt_norm, 0}, {'x', delete_and_yank_chars, opt_rw | opt_norm, 0}, {'s', delete_chars_and_enter_insert, opt_rw, 0}, {'r', replace_chars, opt_char | opt_rw, 0}, {'A', insert_at_end_of_selection, opt_rw, 0}, {-1, NULL, 0, 0}, }; struct action_map _COL_SELECTION_MAP[] = { {KEY_ESCAPE, leave_selection, 0, 0}, {KEY_CTRL_C, leave_selection, 0, 0}, {KEY_CTRL_V, leave_selection, 0, 0}, {'I', enter_col_insert, opt_rw, 0}, {'a', enter_col_insert_after, opt_rw, 0}, {'d', delete_at_column, opt_arg | opt_rw, 1}, {-1, NULL, 0, 0}, }; struct action_map _COL_INSERT_MAP[] = { {KEY_ESCAPE, leave_selection, 0, 0}, {KEY_CTRL_C, leave_selection, 0, 0}, {KEY_BACKSPACE, delete_at_column, opt_arg, -1}, {KEY_DELETE, delete_at_column, opt_arg, 1}, {KEY_ENTER, NULL, 0, 0}, {KEY_CTRL_W, NULL, 0, 0}, {KEY_CTRL_V, insert_char_at_column, opt_char, 0}, {KEY_LEFT, column_left, 0, 0}, {KEY_RIGHT, column_right, 0, 0}, {KEY_UP, column_up, 0, 0}, {KEY_DOWN, column_down, 0, 0}, {-1, NULL, 0, 0}, }; struct action_map _NAVIGATION_MAP[] = { /* Common navigation */ {KEY_CTRL_B, go_page_up, opt_rep, 0}, {KEY_CTRL_F, go_page_down, opt_rep, 0}, {':', enter_command, 0, 0}, {'/', enter_search, opt_arg, 1}, {'?', enter_search, opt_arg, 0}, {'n', search_next, opt_rep, 0}, {'N', search_prev, opt_rep, 0}, {'j', cursor_down, opt_rep, 0}, {'k', cursor_up, opt_rep, 0}, {'h', cursor_left, opt_rep, 0}, {'l', cursor_right, opt_rep, 0}, {'b', word_left, opt_rep, 0}, {'w', word_right, opt_rep, 0}, {'B', big_word_left, opt_rep, 0}, {'W', big_word_right, opt_rep, 0}, {'<', shift_horizontally, opt_arg, -1}, {'>', shift_horizontally, opt_arg, 1}, {'f', find_character_forward, opt_rep | opt_arg | opt_char, 'f'}, {'F', find_character_backward, opt_rep | opt_arg | opt_char, 'F'}, {'t', find_character_forward, opt_rep | opt_arg | opt_char, 't'}, {'T', find_character_backward, opt_rep | opt_arg | opt_char, 'T'}, {'G', goto_line, opt_nav, 0}, {'*', search_under_cursor, 0, 0}, {' ', go_page_down, opt_rep, 0}, {'%', jump_to_matching_bracket, 0, 0}, {'{', jump_to_previous_blank, opt_rep, 0}, {'}', jump_to_next_blank, opt_rep, 0}, {'$', cursor_end, 0, 0}, {'|', cursor_home, 0, 0}, {KEY_ENTER, next_line_non_whitespace, opt_rep, 0}, {'^', first_non_whitespace, 0, 0}, {'0', cursor_home, 0, 0}, {-1, NULL, 0, 0}, }; struct action_map _ESCAPE_MAP[] = { {KEY_F1, toggle_numbers, 0, 0}, {KEY_F2, toggle_indent, 0, 0}, {KEY_F3, toggle_gutter, 0, 0}, {KEY_F4, toggle_smartcomplete, 0, 0}, {KEY_MOUSE, handle_mouse, 0, 0}, {KEY_MOUSE_SGR, handle_mouse_sgr, 0, 0}, {KEY_UP, cursor_up, opt_rep, 0}, {KEY_DOWN, cursor_down, opt_rep, 0}, {KEY_RIGHT, cursor_right, opt_rep, 0}, {KEY_CTRL_RIGHT, big_word_right, opt_rep, 0}, {KEY_SHIFT_RIGHT, word_right, opt_rep, 0}, {KEY_ALT_RIGHT, expand_split_right, opt_rep, 0}, {KEY_ALT_SHIFT_RIGHT, use_right_buffer, opt_rep, 0}, {KEY_LEFT, cursor_left, opt_rep, 0}, {KEY_CTRL_LEFT, big_word_left, opt_rep, 0}, {KEY_SHIFT_LEFT, word_left, opt_rep, 0}, {KEY_ALT_LEFT, expand_split_left, opt_rep, 0}, {KEY_ALT_SHIFT_LEFT, use_left_buffer, opt_rep, 0}, {KEY_HOME, cursor_home, 0, 0}, {KEY_END, cursor_end, 0, 0}, {KEY_PAGE_UP, go_page_up, opt_rep, 0}, {KEY_PAGE_DOWN, go_page_down, opt_rep, 0}, {KEY_CTRL_Z, suspend, 0, 0}, {-1, NULL, 0, 0} }; struct action_map _COMMAND_MAP[] = { {KEY_ENTER, command_accept, 0, 0}, {'\t', command_tab_complete_buffer, 0, 0}, {KEY_UP, command_scroll_history, opt_arg, -1}, /* back */ {KEY_DOWN, command_scroll_history, opt_arg, 1}, /* forward */ {-1, NULL, 0, 0} }; struct action_map _FILESEARCH_MAP[] = { {KEY_ENTER, file_search_accept, 0, 0}, {KEY_UP, NULL, 0, 0}, {KEY_DOWN, NULL, 0, 0}, {-1, NULL, 0, 0} }; struct action_map _SEARCH_MAP[] = { {KEY_ENTER, search_accept, 0, 0}, {KEY_UP, NULL, 0, 0}, {KEY_DOWN, NULL, 0, 0}, {-1, NULL, 0, 0} }; struct action_map _INPUT_BUFFER_MAP[] = { /* These are generic and shared with search */ {KEY_ESCAPE, command_discard, 0, 0}, {KEY_CTRL_C, command_discard, 0, 0}, {KEY_BACKSPACE, command_backspace, 0, 0}, {KEY_CTRL_W, command_word_delete, 0, 0}, {KEY_MOUSE, eat_mouse, 0, 0}, {KEY_MOUSE_SGR, eat_mouse_sgr, 0, 0}, {KEY_LEFT, command_cursor_left, 0, 0}, {KEY_CTRL_LEFT, command_word_left, 0, 0}, {KEY_RIGHT, command_cursor_right, 0, 0}, {KEY_CTRL_RIGHT,command_word_right, 0, 0}, {KEY_HOME, command_cursor_home, 0, 0}, {KEY_END, command_cursor_end, 0, 0}, {-1, NULL, 0, 0} }; /* DIRECTORY_BROWSE_MAP is only to override KEY_ENTER and should not be remapped, * so unlike the others it is not going to be redefined as a pointer. */ struct action_map DIRECTORY_BROWSE_MAP[] = { {KEY_ENTER, open_file_from_line, 0, 0}, {-1, NULL, 0, 0} }; struct action_map * NORMAL_MAP = NULL; struct action_map * INSERT_MAP = NULL; struct action_map * REPLACE_MAP = NULL; struct action_map * LINE_SELECTION_MAP = NULL; struct action_map * CHAR_SELECTION_MAP = NULL; struct action_map * COL_SELECTION_MAP = NULL; struct action_map * COL_INSERT_MAP = NULL; struct action_map * NAVIGATION_MAP = NULL; struct action_map * ESCAPE_MAP = NULL; struct action_map * COMMAND_MAP = NULL; struct action_map * SEARCH_MAP = NULL; struct action_map * FILESEARCH_MAP = NULL; struct action_map * INPUT_BUFFER_MAP = NULL; struct mode_names mode_names[] = { {"Normal","norm",&NORMAL_MAP}, {"Insert","insert",&INSERT_MAP}, {"Replace","replace",&REPLACE_MAP}, {"Line Selection","line",&LINE_SELECTION_MAP}, {"Char Selection","char",&CHAR_SELECTION_MAP}, {"Col Selection","col",&COL_SELECTION_MAP}, {"Col Insert","colinsert",&COL_INSERT_MAP}, {"Navigation (Select)","nav",&NAVIGATION_MAP}, {"Escape (Select, Insert)","esc",&ESCAPE_MAP}, {"Command","command",&COMMAND_MAP}, {"Search","search",&SEARCH_MAP}, {"Input (Command, Search)","input",&INPUT_BUFFER_MAP}, {NULL,NULL,NULL}, }; int handle_action(struct action_map * basemap, int key) { for (struct action_map * map = basemap; map->key != -1; map++) { if (map->key == key) { if (!map->method) return 1; if ((map->options & opt_rw) && (env->readonly)) { render_error("Buffer is read-only"); return 2; } /* Determine how to format this request */ int reps = (map->options & opt_rep) ? ((nav_buffer) ? atoi(nav_buf) : 1) : 1; int c = 0; if (map->options & opt_char) { c = read_one_character(name_from_key(key)); } if (map->options & opt_byte) { c = read_one_byte(name_from_key(key)); } for (int i = 0; i < reps; ++i) { if (((map->options & opt_char) || (map->options & opt_byte)) && (map->options & opt_arg)) { map->method(map->arg, c); } else if ((map->options & opt_char) || (map->options & opt_byte)) { map->method(c); } else if (map->options & opt_arg) { map->method(map->arg); } else if (map->options & opt_nav) { if (nav_buffer) { map->method(atoi(nav_buf)); reset_nav_buffer(0); } else { map->method(-1); } } else { map->method(); } } if (map->options & opt_norm) { if (env->mode == MODE_INSERT || env->mode == MODE_REPLACE) leave_insert(); else if (env->mode == MODE_LINE_SELECTION || env->mode == MODE_CHAR_SELECTION || env->mode == MODE_COL_SELECTION) leave_selection(); else { env->mode = MODE_NORMAL; redraw_all(); } } return 1; } } return 0; } int handle_nav_buffer(int key) { if ((key >= '1' && key <= '9') || (key == '0' && nav_buffer)) { if (nav_buffer < NAV_BUFFER_MAX) { /* Up to NAV_BUFFER_MAX=10 characters; that should be enough for most tasks */ nav_buf[nav_buffer] = key; nav_buf[nav_buffer+1] = 0; nav_buffer++; /* Print the number buffer */ redraw_commandline(); } return 0; } return 1; } /** * NORMAL mode * * Default editor mode - just cursor navigation and keybinds * to enter the other modes. */ void normal_mode(void) { int last_mode = MODE_NORMAL; int refresh = 0; while (1) { if (global_config.overlay_mode) { if (global_config.overlay_mode == OVERLAY_MODE_COMMAND) { if (refresh) { render_command_input_buffer(); refresh = 0; } int key = bim_getkey(DEFAULT_KEY_WAIT); if (key != KEY_TIMEOUT) { refresh = 1; if (!handle_action(COMMAND_MAP, key)) if (!handle_action(INPUT_BUFFER_MAP, key)) if (key < KEY_ESCAPE) command_insert_char(key); } continue; } else if (global_config.overlay_mode == OVERLAY_MODE_FILESEARCH) { if (refresh) { redraw_tabbar(); render_command_input_buffer(); refresh = 0; } int key = bim_getkey(DEFAULT_KEY_WAIT); if (key != KEY_TIMEOUT) { refresh = 1; if (!handle_action(FILESEARCH_MAP, key)) if (!handle_action(INPUT_BUFFER_MAP, key)) if (key < KEY_ESCAPE) command_insert_char(key); } continue; } else if (global_config.overlay_mode == OVERLAY_MODE_SEARCH) { if (refresh) { render_command_input_buffer(); refresh = 0; } int key = bim_getkey(DEFAULT_KEY_WAIT); if (key != KEY_TIMEOUT) { refresh = 1; if (!handle_action(SEARCH_MAP, key)) { if (!handle_action(INPUT_BUFFER_MAP, key)) { if (key < KEY_ESCAPE) command_insert_char(key); } } if (global_config.overlay_mode == OVERLAY_MODE_SEARCH) { /* Find the next search match */ uint32_t * buffer = malloc(sizeof(uint32_t) * (global_config.command_buffer->actual+1)); for (int i = 0; i < global_config.command_buffer->actual; ++i) { buffer[i] = global_config.command_buffer->text[i].codepoint; } buffer[global_config.command_buffer->actual] = 0; int line = -1, col = -1; if (global_config.search_direction == 1) { find_match(global_config.prev_line, global_config.prev_col, &line, &col, buffer, NULL); if (line == -1 && global_config.search_wraps) { find_match(1, 1, &line, &col, buffer, NULL); } } else { find_match_backwards(global_config.prev_line, global_config.prev_col, &line, &col, buffer); if (line == -1 && global_config.search_wraps) { find_match_backwards(env->line_count, env->lines[env->line_count-1]->actual, &line, &col, buffer); } } if (line != -1) { env->col_no = col; env->line_no = line; set_preferred_column(); } else { env->coffset = global_config.prev_coffset; env->offset = global_config.prev_offset; env->col_no = global_config.prev_col; set_preferred_column(); env->line_no = global_config.prev_line; } draw_search_match(buffer, 0); free(buffer); } } continue; } } if (env->mode != last_mode) { redraw_statusbar(); redraw_commandline(); last_mode = env->mode; } if (env->mode == MODE_NORMAL) { place_cursor_actual(); int key = 0; do { key = bim_getkey(DEFAULT_KEY_WAIT); } while (key == KEY_TIMEOUT); if (handle_nav_buffer(key)) { if (!handle_action(NORMAL_MAP, key)) if (!handle_action(NAVIGATION_MAP, key)) handle_action(ESCAPE_MAP, key); } reset_nav_buffer(key); } else if (env->mode == MODE_INSERT) { if (!refresh) place_cursor_actual(); int key = bim_getkey(refresh ? 10 : DEFAULT_KEY_WAIT); if (key == KEY_TIMEOUT) { place_cursor_actual(); if (refresh > 1) { redraw_text(); } else if (refresh) { redraw_line(env->line_no-1); } refresh = 0; } else if (handle_action(INSERT_MAP, key)) { refresh = 2; } else if (handle_action(ESCAPE_MAP, key)) { /* Do nothing */ } else if (key < KEY_ESCAPE) { insert_char(key); if (global_config.smart_complete) { redraw_line(env->line_no-1); while (omni_complete(1) == 1); } refresh |= 1; } } else if (env->mode == MODE_REPLACE) { place_cursor_actual(); int key = bim_getkey(DEFAULT_KEY_WAIT); if (key != KEY_TIMEOUT) { if (handle_action(REPLACE_MAP, key)) { redraw_text(); } else if (!handle_action(ESCAPE_MAP, key)) { /* Perform replacement */ if (key < KEY_ESCAPE) { if (env->col_no <= env->lines[env->line_no - 1]->actual) { replace_char(key); env->col_no += 1; } else { insert_char(key); redraw_line(env->line_no-1); } set_preferred_column(); } } } } else if (env->mode == MODE_LINE_SELECTION) { place_cursor_actual(); int key = bim_getkey(DEFAULT_KEY_WAIT); if (key == KEY_TIMEOUT) continue; if (handle_nav_buffer(key)) { if (!handle_action(LINE_SELECTION_MAP, key)) if (!handle_action(NAVIGATION_MAP, key)) handle_action(ESCAPE_MAP, key); } reset_nav_buffer(key); if (env->mode == MODE_LINE_SELECTION) { /* Mark current line */ _redraw_line(env->line_no,0); _redraw_line(env->start_line,1); /* Properly mark everything in the span we just moved through */ if (env->prev_line < env->line_no) { for (int i = env->prev_line; i < env->line_no; ++i) { _redraw_line(i,0); } env->prev_line = env->line_no; } else if (env->prev_line > env->line_no) { for (int i = env->line_no + 1; i <= env->prev_line; ++i) { _redraw_line(i,0); } env->prev_line = env->line_no; } redraw_commandline(); } } else if (env->mode == MODE_CHAR_SELECTION) { place_cursor_actual(); int key = bim_getkey(DEFAULT_KEY_WAIT); if (key == KEY_TIMEOUT) continue; if (handle_nav_buffer(key)) { if (!handle_action(CHAR_SELECTION_MAP, key)) if (!handle_action(NAVIGATION_MAP, key)) handle_action(ESCAPE_MAP, key); } reset_nav_buffer(key); if (env->mode == MODE_CHAR_SELECTION) { /* Mark current line */ _redraw_line_char(env->line_no,1); /* Properly mark everything in the span we just moved through */ if (env->prev_line < env->line_no) { for (int i = env->prev_line; i < env->line_no; ++i) { _redraw_line_char(i,1); } env->prev_line = env->line_no; } else if (env->prev_line > env->line_no) { for (int i = env->line_no + 1; i <= env->prev_line; ++i) { _redraw_line_char(i,1); } env->prev_line = env->line_no; } } } else if (env->mode == MODE_COL_SELECTION) { place_cursor_actual(); int key = bim_getkey(DEFAULT_KEY_WAIT); if (key == KEY_TIMEOUT) continue; if (handle_nav_buffer(key)) { if (!handle_action(COL_SELECTION_MAP, key)) if (!handle_action(NAVIGATION_MAP, key)) handle_action(ESCAPE_MAP, key); } reset_nav_buffer(key); if (env->mode == MODE_COL_SELECTION) { _redraw_line_col(env->line_no, 0); /* Properly mark everything in the span we just moved through */ if (env->prev_line < env->line_no) { for (int i = env->prev_line; i < env->line_no; ++i) { _redraw_line_col(i,0); } env->prev_line = env->line_no; } else if (env->prev_line > env->line_no) { for (int i = env->line_no + 1; i <= env->prev_line; ++i) { _redraw_line_col(i,0); } env->prev_line = env->line_no; } redraw_commandline(); } } else if (env->mode == MODE_COL_INSERT) { int key = bim_getkey(refresh ? 10 : DEFAULT_KEY_WAIT); if (key == KEY_TIMEOUT) { if (refresh) { redraw_commandline(); redraw_text(); } refresh = 0; } else if (handle_action(COL_INSERT_MAP, key)) { /* pass */ } else if (key < KEY_ESCAPE) { insert_char_at_column(key); refresh = 1; } } if (env->mode == MODE_DIRECTORY_BROWSE) { place_cursor_actual(); int key = bim_getkey(DEFAULT_KEY_WAIT); if (handle_nav_buffer(key)) { if (!handle_action(DIRECTORY_BROWSE_MAP, key)) if (!handle_action(NAVIGATION_MAP, key)) handle_action(ESCAPE_MAP, key); } reset_nav_buffer(key); } } } KrkClass * CommandDef; struct CommandDef { KrkInstance inst; struct command_def * command; }; int process_krk_command(const char * cmd, KrkValue * outVal) { place_cursor(global_config.term_width, global_config.term_height); fprintf(stdout, "\n"); /* By resetting, we're at 0 frames. */ krk_resetStack(); /* Push something so we're not at the bottom of the stack when an * exception happens, or we'll get the normal interpreter behavior * and won't be able to examine the exception ourselves. */ krk_push(NONE_VAL()); /* If we don't set outSlots for the top frame a syntax error will * get printed by the interpreter and we can't catch it here. */ krk_currentThread.frames[0].outSlots = 1; /* Call the interpreter */ KrkValue out = krk_interpret(cmd,"<bim>"); /* If the user typed just a command name, try to execute it. */ if (krk_isInstanceOf(out,CommandDef)) { krk_push(out); out = krk_callStack(0); } if (outVal) *outVal = out; int retval = (IS_INTEGER(out)) ? AS_INTEGER(out) : 0; int hadOutput = 0; /* If we got an exception during execution, print it now */ if (krk_currentThread.flags & KRK_THREAD_HAS_EXCEPTION) { if (krk_isInstanceOf(krk_currentThread.currentException, vm.exceptions->syntaxError)) { } set_fg_color(COLOR_RED); fflush(stdout); krk_dumpTraceback(); set_fg_color(COLOR_FG); fflush(stdout); hadOutput = 1; krk_resetStack(); } /* Otherwise, we can look at the result here. */ if (!IS_NONE(out) && !(IS_INTEGER(out) && AS_INTEGER(out) == 0)) { krk_push(out); KrkValue repr = krk_callDirect(krk_getType(out)->_reprer, 1); if (IS_STRING(repr)) { fprintf(stdout, " => %s\n", AS_CSTRING(repr)); clear_to_end(); } krk_resetStack(); hadOutput = 1; } /* If we had either an exception or a non-zero, non-None result, * we want to wait for a key press before continuing, and avoid * clearing the screen if the user is going to enter another command. */ if (hadOutput) { int c; while ((c = bim_getch())== -1); if (c != ':') { bim_unget(c); } else { enter_command(); global_config.command_offset = 0; global_config.command_col_no = 1; render_command_input_buffer(); return retval; } } global_config.break_from_selection = 1; if (!global_config.had_error) redraw_all(); global_config.had_error = 0; return retval; } /** * Show help text for -? */ static void show_usage(char * argv[]) { #define _s "\033[3m" #define _e "\033[0m\n" printf( "bim - Text editor\n" "\n" "usage: %s [options] [file]\n" " %s [options] -- -\n" "\n" " -R " _s "open initial buffer read-only" _e " -O " _s "set various options; examples:" _e " noaltscreen " _s "disable alternate screen buffer" _e " nounicode " _s "disable unicode display" _e " nosyntax " _s "disable syntax highlighting on load" _e " nohistory " _s "disable undo/redo" _e " nomouse " _s "disable mouse support" _e " cansgrmouse " _s "enable SGR mouse escape sequences" _e " -c,-C " _s "print file to stdout with syntax highlighting" _e " " _s "-C includes line numbers, -c does not" _e " -u " _s "override bimrc file" _e " -? " _s "show this help text" _e "\n" "Long options:\n" " --help " _s "show this help text" _e " --version " _s "show version information and available plugins" _e " --dump-mappings " _s "dump markdown description of key mappings" _e " --dump-commands " _s "dump markdown description of all commands" _e " --dump-config " _s "dump key mappings as a bimscript" _e " --html FILE " _s "convert FILE to syntax-highlighted HTML" _e "\n", argv[0], argv[0]); #undef _e #undef _s } BIM_COMMAND(runkrk,"runkrk", "Run a kuroko script") { if (argc < 2) return 1; /* In case we're running in a weird context? */ int previousExitFrame = krk_currentThread.exitOnFrame; krk_currentThread.exitOnFrame = krk_currentThread.frameCount; krk_runfile(argv[1],argv[1]); krk_currentThread.exitOnFrame = previousExitFrame; redraw_all(); return 0; } /** * Enable or disable terminal features/quirks and other options. * Used by -O and by the `quirks` bimrc command. */ int set_capability(char * arg) { char * argname; int value; if (strstr(arg,"no") == arg) { argname = &arg[2]; value = 0; } else if (strstr(arg,"can") == arg) { argname = &arg[3]; value = 1; } else { render_error("Capabilities must by 'no{CAP}' or 'can{CAP}': %s", arg); return 2; } /* Terminal features / quirks */ if (!strcmp(argname, "24bit")) global_config.can_24bit = value; else if (!strcmp(argname, "256color")) global_config.can_256color = value; else if (!strcmp(argname, "altscreen")) global_config.can_altscreen = value; else if (!strcmp(argname, "bce")) global_config.can_bce = value; else if (!strcmp(argname, "bright")) global_config.can_bright = value; else if (!strcmp(argname, "hideshow")) global_config.can_hideshow = value; else if (!strcmp(argname, "italic")) global_config.can_italic = value; else if (!strcmp(argname, "mouse")) global_config.can_mouse = value; else if (!strcmp(argname, "scroll")) global_config.can_scroll = value; else if (!strcmp(argname, "title")) global_config.can_title = value; else if (!strcmp(argname, "unicode")) global_config.can_unicode = value; else if (!strcmp(argname, "insert")) global_config.can_insert = value; else if (!strcmp(argname, "paste")) global_config.can_bracketedpaste = value; else if (!strcmp(argname, "sgrmouse")) global_config.can_sgrmouse = value; /* Startup options */ else if (!strcmp(argname, "syntax")) global_config.highlight_on_open = value; else if (!strcmp(argname, "history")) global_config.history_enabled = value; else { render_error("Unknown capability: %s", argname); return 1; } return 0; } BIM_COMMAND(setcap, "setcap", "Enable or disable quirks/features.") { for (int i = 1; i < argc; ++i) { if (set_capability(argv[i])) return 1; } return 0; } BIM_COMMAND(quirk,"quirk","Handle quirks based on environment variables") { if (argc < 3) goto _quirk_arg_error; char * varname = argv[1]; char * teststr = argv[2]; char * value = getenv(varname); if (!value) return 0; if (strstr(value, teststr) == value) { /* Process quirk strings */ for (int i = 3; i < argc; ++i) { set_capability(argv[i]); } } return 0; _quirk_arg_error: render_error("Usage: quirk ENVVAR value no... can..."); return 1; } /** * Load bimrc configuration file. * * At the moment, this a simple key=value list. */ void load_bimrc(void) { if (!global_config.bimrc_path) return; /* Default is ~/.bimrc */ char * tmp = strdup(global_config.bimrc_path); if (!*tmp) { free(tmp); return; } /* Parse ~ at the front of the path. */ if (*tmp == '~') { char path[1024] = {0}; char * home = getenv("HOME"); if (!home) { /* $HOME is unset? */ free(tmp); return; } /* New path is $HOME/.bimrc */ snprintf(path, 1024, "%s%s", home, tmp+1); free(tmp); tmp = strdup(path); } struct stat statbuf; if (stat(tmp, &statbuf)) { free(tmp); return; } char * args[] = {"runkrk", tmp, NULL}; if (bim_command_runkrk("runkrk", 2, args)) { /* Wait */ render_error("Errors were encountered when loading bimrc. Press ENTER to continue."); int c; while ((c = bim_getch(), c != ENTER_KEY && c != LINE_FEED)); } free(tmp); } static int checkClass(KrkClass * _class, KrkClass * base) { while (_class) { if (_class == base) return 1; _class = _class->base; } return 0; } static KrkValue krk_bim_syntax_dict; static KrkValue krk_bim_register_syntax(int argc, KrkValue argv[], int hasKw) { if (argc < 1 || !IS_CLASS(argv[0]) || !checkClass(AS_CLASS(argv[0]), syntaxStateClass)) return krk_runtimeError(vm.exceptions->typeError, "Can not register '%s' as a syntax highlighter, expected subclass of SyntaxState.", krk_typeName(argv[0])); KrkValue name = krk_valueGetAttribute_default(argv[0], "name", NONE_VAL()); KrkValue extensions = krk_valueGetAttribute_default(argv[0], "extensions", NONE_VAL()); KrkValue spaces = krk_valueGetAttribute_default(argv[0], "spaces", BOOLEAN_VAL(0)); KrkValue calculate = krk_valueGetAttribute_default(argv[0], "calculate", NONE_VAL()); if (!IS_STRING(name)) return krk_runtimeError(vm.exceptions->typeError, "%s.name must be str", AS_CLASS(argv[0])->name->chars); if (!IS_TUPLE(extensions)) return krk_runtimeError(vm.exceptions->typeError, "%s.extensions must be tuple<str>", AS_CLASS(argv[0])->name->chars); if (!IS_BOOLEAN(spaces)) return krk_runtimeError(vm.exceptions->typeError, "%s.spaces must be bool", AS_CLASS(argv[0])->name->chars); if (!IS_CLOSURE(calculate)) return krk_runtimeError(vm.exceptions->typeError, "%s.calculate must be method, not '%s'", AS_CLASS(argv[0])->name->chars, krk_typeName(calculate)); /* Convert tuple of strings */ char ** ext = malloc(sizeof(char *) * (AS_TUPLE(extensions)->values.count + 1)); /* +1 for NULL */ ext[AS_TUPLE(extensions)->values.count] = NULL; for (size_t i = 0; i < AS_TUPLE(extensions)->values.count; ++i) { if (!IS_STRING(AS_TUPLE(extensions)->values.values[i])) { free(ext); return krk_runtimeError(vm.exceptions->typeError, "%s.extensions must by tuple<str>", AS_CLASS(argv[0])->name->chars); } ext[i] = AS_CSTRING(AS_TUPLE(extensions)->values.values[i]); } add_syntax((struct syntax_definition) { AS_CSTRING(name), /* name */ ext, /* NULL-terminated array of extensions */ NULL, /* calculate function */ AS_BOOLEAN(spaces), /* spaces */ NULL, /* qualifier */ NULL, /* matcher */ AS_OBJECT(calculate), /* krkFunc */ AS_OBJECT(argv[0]), }); /* And save it in the module stuff. */ krk_tableSet(AS_DICT(krk_bim_syntax_dict), name, argv[0]); return NONE_VAL(); } static KrkValue krk_bim_theme_dict; static KrkValue krk_bim_define_theme(int argc, KrkValue argv[], int hasKw) { if (argc < 1 || !IS_CLOSURE(argv[0])) return krk_runtimeError(vm.exceptions->typeError, "themes must be functions, not '%s'", krk_typeName(argv[0])); KrkValue name = OBJECT_VAL(AS_CLOSURE(argv[0])->function->name); add_colorscheme((struct theme_def) { AS_CSTRING(name), AS_OBJECT(argv[0]), }); krk_tableSet(AS_DICT(krk_bim_theme_dict), name, argv[0]); return argv[0]; } int c_keyword_qualifier(int c) { return isalnum(c) || (c == '_'); } #define BIM_STATE() \ if (unlikely(argc < 1 || !krk_isInstanceOf(argv[0],syntaxStateClass))) return krk_runtimeError(vm.exceptions->typeError, "expected state"); \ KrkInstance * _self = AS_INSTANCE(argv[0]); \ struct SyntaxState * self = (struct SyntaxState*)_self; \ struct syntax_state * state = &self->state; static KrkTuple * _bim_state_chars = NULL; static KrkValue bim_krk_state_getstate(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); if (argc > 1 && IS_INTEGER(argv[1])) { state->state = AS_INTEGER(argv[1]); } else if (argc > 1 && IS_NONE(argv[1])) { state->state = -1; } return INTEGER_VAL(state->state); } static KrkValue bim_krk_state_setstate(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); if (argc > 1 && IS_INTEGER(argv[1])) { state->state = AS_INTEGER(argv[1]); } else if (argc > 1 && IS_NONE(argv[1])) { state->state = -1; } else { return krk_runtimeError(vm.exceptions->typeError, "expected int"); } return NONE_VAL(); } static KrkValue bim_krk_state_index(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); return INTEGER_VAL(state->i); } static KrkValue bim_krk_state_lineno(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); return INTEGER_VAL(state->line_no); } static KrkValue bim_krk_state_get(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); long arg = AS_INTEGER(argv[1]); int charRel = charrel(arg); if (charRel == -1) return NONE_VAL(); if (charRel >= 32 && charRel <= 126) return _bim_state_chars->values.values[charRel - 32]; char tmp[8] = {0}; size_t len = to_eight(charRel, tmp); return OBJECT_VAL(krk_copyString(tmp,len)); } static KrkValue bim_krk_state_getslice(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); struct StringBuilder sb = {0}; if (!(IS_INTEGER(argv[1]) || IS_NONE(argv[1]))) return krk_runtimeError(vm.exceptions->typeError, "Bad index"); if (!(IS_INTEGER(argv[2]) || IS_NONE(argv[2]))) return krk_runtimeError(vm.exceptions->typeError, "Bad index"); int start = IS_NONE(argv[1]) ? 0 : AS_INTEGER(argv[1]); int end = IS_NONE(argv[2]) ? (krk_integer_type)(state->line->actual - state->i) : AS_INTEGER(argv[2]); if (end < start) end = start; for (int i = start; i < end; ++i) { int charRel = charrel(i); if (charRel == -1) break; char tmp[8] = {0}; size_t len = to_eight(charRel, tmp); pushStringBuilderStr(&sb, tmp, len); } return finishStringBuilder(&sb); } static KrkValue bim_krk_state_isdigit(int argc, KrkValue argv[], int hasKw) { if (IS_NONE(argv[1])) return BOOLEAN_VAL(0); if (!IS_STRING(argv[1])) { krk_runtimeError(vm.exceptions->typeError, "not a string: %s", krk_typeName(argv[1])); return BOOLEAN_VAL(0); } if (AS_STRING(argv[1])->codesLength > 1) { krk_runtimeError(vm.exceptions->typeError, "arg must be str of len 1"); return BOOLEAN_VAL(0); } unsigned int c = krk_unicodeCodepoint(AS_STRING(argv[1]), 0); return BOOLEAN_VAL(!!isdigit(c)); } static KrkValue bim_krk_state_isxdigit(int argc, KrkValue argv[], int hasKw) { if (!IS_STRING(argv[1])) return BOOLEAN_VAL(0); if (AS_STRING(argv[1])->length > 1) return BOOLEAN_VAL(0); int c = AS_CSTRING(argv[1])[0]; return BOOLEAN_VAL(!!isxdigit(c)); } static KrkValue bim_krk_state_paint(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); long howMuch = AS_INTEGER(argv[1]); if (howMuch == -1) howMuch = state->line->actual; long whatFlag = AS_INTEGER(argv[2]); paint(howMuch, whatFlag); return NONE_VAL(); } static KrkValue bim_krk_state_paintComment(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); paint_comment(state); return NONE_VAL(); } static KrkValue bim_krk_state_skip(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); skip(); return NONE_VAL(); } static KrkValue bim_krk_state_cKeywordQualifier(int argc, KrkValue argv[], int hasKw) { if (IS_INTEGER(argv[0])) return BOOLEAN_VAL(!!c_keyword_qualifier(AS_INTEGER(argv[0]))); if (!IS_STRING(argv[0])) return BOOLEAN_VAL(0); if (AS_STRING(argv[0])->length > 1) return BOOLEAN_VAL(0); return BOOLEAN_VAL(!!c_keyword_qualifier(AS_CSTRING(argv[0])[0])); } static int callQualifier(KrkValue qualifier, int codepoint) { if (IS_NATIVE(qualifier) && AS_NATIVE(qualifier)->function == bim_krk_state_cKeywordQualifier) return AS_BOOLEAN(!!c_keyword_qualifier(codepoint)); krk_push(qualifier); krk_push(INTEGER_VAL(codepoint)); KrkValue result = krk_callStack(1); if (IS_BOOLEAN(result)) return AS_BOOLEAN(result); return 0; } #define KRK_STRING_FAST(string,offset) (uint32_t)\ (string->type <= 1 ? ((uint8_t*)string->codes)[offset] : \ (string->type == 2 ? ((uint16_t*)string->codes)[offset] : \ ((uint32_t*)string->codes)[offset])) static KrkValue bim_krk_state_findKeywords(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); if (unlikely(argc < 4 || !(IS_INSTANCE(argv[1]) && AS_INSTANCE(argv[1])->_class == vm.baseClasses->listClass) || !IS_INTEGER(argv[2]))) return krk_runtimeError(vm.exceptions->typeError, "invalid arguments to SyntaxState.findKeywords"); KrkValue qualifier = argv[3]; int flag = AS_INTEGER(argv[2]); if (callQualifier(qualifier, lastchar())) return BOOLEAN_VAL(0); if (!callQualifier(qualifier, charat())) return BOOLEAN_VAL(0); for (size_t keyword = 0; keyword < AS_LIST(argv[1])->count; ++keyword) { if (!IS_STRING(AS_LIST(argv[1])->values[keyword])) return krk_runtimeError(vm.exceptions->typeError, "expected list of strings, found '%s'", krk_typeName(AS_LIST(argv[1])->values[keyword])); KrkString * me = AS_STRING(AS_LIST(argv[1])->values[keyword]); size_t d = 0; if (me->type == KRK_STRING_ASCII) { while (state->i + (int)d < state->line->actual && d < me->codesLength && state->line->text[state->i+d].codepoint == me->chars[d]) d++; } else { krk_unicodeString(me); while (state->i + (int)d < state->line->actual && d < me->codesLength && state->line->text[state->i+d].codepoint == KRK_STRING_FAST(me,d)) d++; } if (d == me->codesLength && (state->i + (int)d >= state->line->actual || !callQualifier(qualifier,state->line->text[state->i+d].codepoint))) { paint((int)me->codesLength, flag); return BOOLEAN_VAL(1); } } return BOOLEAN_VAL(0); } static KrkValue bim_krk_state_matchAndPaint(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); if (argc < 4 || !IS_STRING(argv[1]) || !IS_INTEGER(argv[2])) return krk_runtimeError(vm.exceptions->typeError, "invalid arguments to SyntaxState.matchAndPaint"); KrkValue qualifier = argv[3]; int flag = AS_INTEGER(argv[2]); KrkString * me = AS_STRING(argv[1]); size_t d = 0; if (me->type == KRK_STRING_ASCII) { while (state->i + (int)d < state->line->actual && d < me->codesLength && state->line->text[state->i+d].codepoint == me->chars[d]) d++; } else { krk_unicodeString(me); while (state->i + (int)d < state->line->actual && d < me->codesLength && state->line->text[state->i+d].codepoint == KRK_STRING_FAST(me,d)) d++; } if (d == me->codesLength && (state->i + (int)d >= state->line->actual || !callQualifier(qualifier,state->line->text[state->i+d].codepoint))) { paint((int)me->codesLength, flag); return BOOLEAN_VAL(1); } return BOOLEAN_VAL(0); } static KrkValue bim_krk_state_rewind(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); state->i -= AS_INTEGER(argv[1]); return NONE_VAL(); } static KrkValue bim_krk_state_commentBuzzwords(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); return BOOLEAN_VAL(common_comment_buzzwords(state)); } static KrkValue bim_krk_state_init(int argc, KrkValue argv[], int hasKw) { BIM_STATE(); if (argc < 2 || !krk_isInstanceOf(argv[1], syntaxStateClass)) { return krk_runtimeError(vm.exceptions->typeError, "Can only initialize subhighlighter from an existing highlighter."); } *state = ((struct SyntaxState*)AS_INSTANCE(argv[1]))->state; return argv[0]; } static KrkValue krk_bim_get_commands(int argc, KrkValue argv[], int hasKw) { KrkValue myList = krk_list_of(0, NULL,0); krk_push(myList); for (struct command_def * c = regular_commands; regular_commands && c->name; ++c) { krk_writeValueArray(AS_LIST(myList), OBJECT_VAL(krk_copyString(c->name,strlen(c->name)))); } for (struct command_def * c = prefix_commands; prefix_commands && c->name; ++c) { krk_writeValueArray(AS_LIST(myList), OBJECT_VAL(krk_copyString(c->name,strlen(c->name)))); } return krk_pop(); } KrkClass * ActionDef; struct ActionDef { KrkInstance inst; struct action_def * action; }; static KrkValue bim_krk_action_call(int argc, KrkValue argv[], int hasKw) { struct ActionDef * self = (void*)AS_OBJECT(argv[0]); /* Figure out arguments */ int args = 0; if (self->action->options & ARG_IS_CUSTOM) args++; if (self->action->options & ARG_IS_INPUT) args++; if (self->action->options & ARG_IS_PROMPT) args++; int argsAsInts[3] = { 0, 0, 0 }; for (int i = 0; i < args; i++) { if (argc < i + 2) return krk_runtimeError(vm.exceptions->argumentError, "%s() takes %d argument%s", self->action->name, args, args == 1 ? "" : "s"); if (IS_INTEGER(argv[i+1])) { argsAsInts[i] = AS_INTEGER(argv[i+1]); } else if (IS_STRING(argv[i+1]) && AS_STRING(argv[i+1])->codesLength == 1) { argsAsInts[i] = krk_unicodeCodepoint(AS_STRING(argv[i+1]), 0); } else if (IS_BOOLEAN(argv[i+1])) { argsAsInts[i] = AS_BOOLEAN(argv[i+1]); } else { return krk_runtimeError(vm.exceptions->typeError, "argument to %s() must be int, bool, or str of len 1", self->action->name); } } self->action->action(argsAsInts[0], argsAsInts[1], argsAsInts[2]); return NONE_VAL(); } static KrkValue bim_krk_command_call(int argc, KrkValue argv[], int hasKw) { struct CommandDef * self = (void*)AS_OBJECT(argv[0]); char ** args = malloc(sizeof(char*)*argc); args[0] = strdup(self->command->name); for (int i = 1; i < argc; ++i) { if (IS_STRING(argv[i])) { args[i] = strdup(AS_CSTRING(argv[i])); } else { krk_push(argv[i]); KrkValue asString = krk_callDirect(krk_getType(argv[i])->_tostr, 1); args[i] = strdup(AS_CSTRING(asString)); } } int result = self->command->command(args[0], argc, args); for (int i = 0; i < argc; ++i) { free(args[i]); } free(args); return INTEGER_VAL(result); } static void makeClass(KrkInstance * module, KrkClass ** _class, const char * name, KrkClass * base) { KrkString * str_Name = krk_copyString(name,strlen(name)); krk_push(OBJECT_VAL(str_Name)); *_class = krk_newClass(str_Name, base); krk_push(OBJECT_VAL(*_class)); /* Bind it */ krk_attachNamedObject(&module->fields,name,(KrkObj*)*_class); krk_pop(); krk_pop(); } void import_directory(char * dirName) { const char * extra = ""; char * dirpath = NULL; char file[4096]; if (vm.binpath) { char * tmp = strdup(vm.binpath); dirpath = strdup(dirname(tmp)); extra = "/"; free(tmp); sprintf(file, "%s/%s", dirpath, dirName); } else { sprintf(file, "%s", dirName); } DIR * dirp = opendir(file); if (!dirp && dirpath) { /* Try ../share/bim/dirName */ sprintf(file, "%s/../share/bim/%s", dirpath, dirName); extra = "/../share/bim/"; dirp = opendir(file); } if (!dirp) { /* Try /usr/share/bim */ if (dirpath) free(dirpath); dirpath = strdup("/usr/share/bim"); sprintf(file, "%s/%s", dirpath, dirName); extra = "/"; dirp = opendir(file); } if (!dirp) { /* Try one last fallback */ if (dirpath) free(dirpath); dirpath = strdup("/usr/local/share/bim"); sprintf(file, "%s/%s", dirpath, dirName); extra = "/"; dirp = opendir(file); } if (!dirp) { fprintf(stderr, "Could not find startup files: %s\n", dirName); exit(1); } if (dirpath) { /* This is a dumb hack. */ char tmp[4096]; sprintf(tmp, "import kuroko\n" "if '%s%s' not in kuroko.module_paths:\n" " kuroko.module_paths.insert(0,'%s%s')\n", dirpath, extra, dirpath, extra); krk_interpret(tmp,"<bim>"); } if (dirpath) free(dirpath); struct dirent * ent = readdir(dirp); while (ent) { if (str_ends_with(ent->d_name,".krk") && !str_ends_with(ent->d_name,"__init__.krk")) { char * tmp = malloc(strlen(dirName) + 1 + strlen(ent->d_name) + 1 + 7); snprintf(tmp, strlen(dirName) + 1 + strlen(ent->d_name) + 1 + 7, "import %s.%s", dirName, ent->d_name); tmp[strlen(tmp)-4] = '\0'; krk_interpret(tmp,ent->d_name); free(tmp); } ent = readdir(dirp); } closedir(dirp); } static void findBim(char * argv[]) { /* Try asking /proc */ char * binpath = realpath("/proc/self/exe", NULL); if (!binpath) { if (strchr(argv[0], '/')) { binpath = realpath(argv[0], NULL); } else { /* Search PATH for argv[0] */ char * _path = strdup(getenv("PATH")); char * path = _path; while (path) { char * next = strchr(path,':'); if (next) *next++ = '\0'; char tmp[4096]; sprintf(tmp, "%s/%s", path, argv[0]); if (access(tmp, X_OK)) { binpath = strdup(tmp); break; } path = next; } free(_path); } } if (binpath) { vm.binpath = binpath; } /* Else, give up at this point and just don't attach it at all. */ } BIM_COMMAND(reload,"reload","Reloads all the Kuroko stuff.") { /* Unload everything syntax-y */ KrkValue result = krk_interpret( "if True:\n" " import kuroko\n" " for mod in kuroko.modules():\n" " if mod.startswith('syntax.') or mod.startswith('themes.'):\n" " kuroko.unload(mod)\n", "<bim>"); if (IS_NONE(result) && (krk_currentThread.flags & KRK_THREAD_HAS_EXCEPTION)) { krk_dumpTraceback(); return 1; } /* Reload everything */ krk_resetStack(); krk_startModule("<bim-syntax>"); import_directory("syntax"); krk_startModule("<bim-themes>"); import_directory("themes"); krk_startModule("<bim-repl>"); /* Re-run the RC file */ load_bimrc(); krk_resetStack(); return 0; } static KrkValue krk_bim_getDocumentText(int argc, KrkValue argv[], int hasKw) { struct StringBuilder sb = {0}; int i, j; for (i = 0; i < env->line_count; ++i) { line_t * line = env->lines[i]; for (j = 0; j < line->actual; j++) { char_t c = line->text[j]; if (c.codepoint == 0) { pushStringBuilder(&sb, 0); } else { char tmp[8] = {0}; int len = to_eight(c.codepoint, tmp); pushStringBuilderStr(&sb, tmp, len); } } pushStringBuilder(&sb, '\n'); } return finishStringBuilder(&sb); } static KrkValue krk_bim_renderError(int argc, KrkValue argv[], int hasKw) { static const char * _method_name = "renderError"; if (argc != 1 || !IS_STRING(argv[0])) return TYPE_ERROR(str,argv[0]); if (AS_STRING(argv[0])->length == 0) redraw_commandline(); else render_error(AS_CSTRING(argv[0])); return NONE_VAL(); } /** * Run global initialization tasks */ void initialize(void) { /* Force empty locale */ setlocale(LC_ALL, ""); /* Set up default key mappings */ #define CLONE_MAP(map) do { \ int len = 0, i = 0; \ for (struct action_map * m = _ ## map; m->key != -1; m++, len++); \ map = malloc(sizeof(struct action_map) * (len + 1)); \ for (struct action_map * m = _ ## map; m->key != -1; m++, i++) { \ memcpy(&map[i], m, sizeof(struct action_map)); \ } \ map[i].key = -1; \ } while (0) CLONE_MAP(NORMAL_MAP); CLONE_MAP(INSERT_MAP); CLONE_MAP(REPLACE_MAP); CLONE_MAP(LINE_SELECTION_MAP); CLONE_MAP(CHAR_SELECTION_MAP); CLONE_MAP(COL_SELECTION_MAP); CLONE_MAP(COL_INSERT_MAP); CLONE_MAP(NAVIGATION_MAP); CLONE_MAP(ESCAPE_MAP); CLONE_MAP(COMMAND_MAP); CLONE_MAP(SEARCH_MAP); CLONE_MAP(FILESEARCH_MAP); CLONE_MAP(INPUT_BUFFER_MAP); #undef CLONE_MAP /* Simple ASCII defaults, but you could use " " as a config option */ global_config.tab_indicator = strdup(">"); global_config.space_indicator = strdup("-"); #if 0 krk_initVM(KRK_GLOBAL_CALLGRIND); /* no debug flags */ vm.callgrindFile = fopen("callgrind.out","w"); #else krk_initVM(0); /* no debug flags */ #endif KrkInstance * bimModule = krk_newInstance(vm.baseClasses->moduleClass); krk_attachNamedObject(&vm.modules, "bim", (KrkObj*)bimModule); krk_attachNamedObject(&bimModule->fields, "__name__", (KrkObj*)S("bim")); krk_defineNative(&bimModule->fields, "bindHighlighter", krk_bim_register_syntax); krk_defineNative(&bimModule->fields, "getCommands", krk_bim_get_commands); krk_bim_theme_dict = krk_dict_of(0,NULL,0); krk_attachNamedValue(&bimModule->fields, "themes", krk_bim_theme_dict); krk_defineNative(&bimModule->fields, "defineTheme", krk_bim_define_theme); krk_bim_syntax_dict = krk_dict_of(0,NULL,0); krk_attachNamedValue(&bimModule->fields, "highlighters", krk_bim_syntax_dict); krk_defineNative(&bimModule->fields, "getDocumentText", krk_bim_getDocumentText); krk_defineNative(&bimModule->fields, "renderError", krk_bim_renderError); makeClass(bimModule, &ActionDef, "Action", vm.baseClasses->objectClass); ActionDef->allocSize = sizeof(struct ActionDef); krk_defineNative(&ActionDef->methods, "__call__", bim_krk_action_call); krk_finalizeClass(ActionDef); for (struct action_def * a = mappable_actions; mappable_actions && a->name; ++a) { struct ActionDef * actionObj = (void*)krk_newInstance(ActionDef); actionObj->action = a; krk_attachNamedObject(&vm.builtins->fields, a->name, (KrkObj*)actionObj); } makeClass(bimModule, &CommandDef, "Command", vm.baseClasses->objectClass); CommandDef->allocSize = sizeof(struct CommandDef); krk_defineNative(&CommandDef->methods, "__call__", bim_krk_command_call); krk_finalizeClass(CommandDef); KrkInstance * global = krk_newInstance(vm.baseClasses->objectClass); krk_attachNamedObject(&vm.builtins->fields, "global", (KrkObj*)global); for (struct command_def * c = regular_commands; regular_commands && c->name; ++c) { struct CommandDef * commandObj = (void*)krk_newInstance(CommandDef); commandObj->command = c; if (strstr(c->name,"global.") == c->name) { krk_attachNamedObject(&global->fields, c->name + 7, (KrkObj*)commandObj); } else { krk_attachNamedObject(&vm.builtins->fields, c->name, (KrkObj*)commandObj); } } makeClass(bimModule, &syntaxStateClass, "SyntaxState", vm.baseClasses->objectClass); syntaxStateClass->allocSize = sizeof(struct SyntaxState); krk_defineNative(&syntaxStateClass->methods, "set_state", bim_krk_state_setstate); /* TODO property? */ krk_defineNative(&syntaxStateClass->methods, "state", bim_krk_state_getstate)->flags |= KRK_NATIVE_FLAGS_IS_DYNAMIC_PROPERTY; krk_defineNative(&syntaxStateClass->methods, "i", bim_krk_state_index)->flags |= KRK_NATIVE_FLAGS_IS_DYNAMIC_PROPERTY; krk_defineNative(&syntaxStateClass->methods, "lineno", bim_krk_state_lineno)->flags |= KRK_NATIVE_FLAGS_IS_DYNAMIC_PROPERTY; krk_defineNative(&syntaxStateClass->methods, "__init__", bim_krk_state_init); /* These ones take argumens so they're methods instead of dynamic fields */ krk_defineNative(&syntaxStateClass->methods, "findKeywords", bim_krk_state_findKeywords); krk_defineNative(&syntaxStateClass->methods, "cKeywordQualifier", bim_krk_state_cKeywordQualifier)->flags |= KRK_NATIVE_FLAGS_IS_STATIC_METHOD; krk_defineNative(&syntaxStateClass->methods, "isdigit", bim_krk_state_isdigit); krk_defineNative(&syntaxStateClass->methods, "isxdigit", bim_krk_state_isxdigit); krk_defineNative(&syntaxStateClass->methods, "paint", bim_krk_state_paint); krk_defineNative(&syntaxStateClass->methods, "paintComment", bim_krk_state_paintComment); krk_defineNative(&syntaxStateClass->methods, "skip", bim_krk_state_skip); krk_defineNative(&syntaxStateClass->methods, "matchAndPaint", bim_krk_state_matchAndPaint); krk_defineNative(&syntaxStateClass->methods, "commentBuzzwords", bim_krk_state_commentBuzzwords); krk_defineNative(&syntaxStateClass->methods, "rewind", bim_krk_state_rewind); krk_defineNative(&syntaxStateClass->methods, "__getitem__", bim_krk_state_get); krk_defineNative(&syntaxStateClass->methods, "__getslice__", bim_krk_state_getslice); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_NONE", INTEGER_VAL(FLAG_NONE)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_KEYWORD", INTEGER_VAL(FLAG_KEYWORD)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_STRING", INTEGER_VAL(FLAG_STRING)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_COMMENT", INTEGER_VAL(FLAG_COMMENT)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_TYPE", INTEGER_VAL(FLAG_TYPE)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_PRAGMA", INTEGER_VAL(FLAG_PRAGMA)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_NUMERAL", INTEGER_VAL(FLAG_NUMERAL)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_ERROR", INTEGER_VAL(FLAG_ERROR)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_DIFFPLUS", INTEGER_VAL(FLAG_DIFFPLUS)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_DIFFMINUS", INTEGER_VAL(FLAG_DIFFMINUS)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_NOTICE", INTEGER_VAL(FLAG_NOTICE)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_BOLD", INTEGER_VAL(FLAG_BOLD)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_LINK", INTEGER_VAL(FLAG_LINK)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_ESCAPE", INTEGER_VAL(FLAG_ESCAPE)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_EXTRA", INTEGER_VAL(FLAG_EXTRA)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_SPECIAL", INTEGER_VAL(FLAG_SPECIAL)); krk_attachNamedValue(&syntaxStateClass->methods, "FLAG_UNDERLINE", INTEGER_VAL(FLAG_UNDERLINE)); _bim_state_chars = krk_newTuple(95); krk_attachNamedObject(&syntaxStateClass->methods, "__chars__", (KrkObj*)_bim_state_chars); for (int c = 0; c < 95; ++c) { char tmp = c + 32; _bim_state_chars->values.values[_bim_state_chars->values.count++] = OBJECT_VAL(krk_copyString(&tmp,1)); } krk_finalizeClass(syntaxStateClass); krk_resetStack(); krk_startModule("<bim-syntax>"); import_directory("syntax"); krk_startModule("<bim-themes>"); import_directory("themes"); /* Start context for command line */ krk_startModule("<bim-repl>"); /* Load bimrc */ load_bimrc(); krk_resetStack(); /* Disable default traceback printing */ vm.globalFlags |= KRK_GLOBAL_CLEAN_OUTPUT; /* Initialize space for buffers */ buffers_avail = 4; buffers = malloc(sizeof(buffer_t *) * buffers_avail); } /** * Initialize terminal for editor display. */ void init_terminal(void) { if (!isatty(STDIN_FILENO) && isatty(STDOUT_FILENO)) { global_config.tty_in = STDERR_FILENO; } set_alternate_screen(); set_bracketed_paste(); update_screen_size(); get_initial_termios(); set_unbuffered(); mouse_enable(); global_config.has_terminal = 1; signal(SIGWINCH, SIGWINCH_handler); signal(SIGCONT, SIGCONT_handler); signal(SIGTSTP, SIGTSTP_handler); } struct action_def * find_action(void (*action)()) { if (!action) return NULL; for (int i = 0; i < flex_mappable_actions_count; ++i) { if (action == mappable_actions[i].action) return &mappable_actions[i]; } return NULL; } void dump_mapping(const char * description, struct action_map * map) { printf("## %s\n", description); printf("\n"); printf("| **Key** | **Action** | **Description** |\n"); printf("|---------|------------|-----------------|\n"); struct action_map * m = map; while (m->key != -1) { /* Find the name of this action */ struct action_def * action = find_action(m->method); printf("| `%s` | `%s` | %s |\n", name_from_key(m->key), action ? action->name : "(unbound)", action ? action->description : "(unbound)"); m++; } printf("\n"); } int sort_regular_commands(const void * a, const void * b) { return strcmp(regular_commands[*(int *)a].name, regular_commands[*(int *)b].name); } int sort_prefix_commands(const void * a, const void * b) { return strcmp(prefix_commands[*(int *)a].name, prefix_commands[*(int *)b].name); } void dump_commands(void) { printf("## Regular Commands\n"); printf("\n"); printf("| **Command** | **Description** |\n"); printf("|-------------|-----------------|\n"); int * offsets = malloc(sizeof(int) * flex_regular_commands_count); for (int i = 0; i < flex_regular_commands_count; ++i) { offsets[i] = i; } qsort(offsets, flex_regular_commands_count, sizeof(int), sort_regular_commands); for (int i = 0; i < flex_regular_commands_count; ++i) { printf("| `:%s` | %s |\n", regular_commands[offsets[i]].name, regular_commands[offsets[i]].description); } free(offsets); printf("\n"); printf("## Prefix Commands\n"); printf("\n"); printf("| **Command** | **Description** |\n"); printf("|-------------|-----------------|\n"); offsets = malloc(sizeof(int) * flex_prefix_commands_count); for (int i = 0; i < flex_prefix_commands_count; ++i) offsets[i] = i; qsort(offsets, flex_prefix_commands_count, sizeof(int), sort_regular_commands); for (int i = 0; i < flex_prefix_commands_count; ++i) { printf("| `:%s...` | %s |\n", !strcmp(prefix_commands[offsets[i]].name, "`") ? "`(backtick)`" : prefix_commands[offsets[i]].name, prefix_commands[offsets[i]].description); } free(offsets); printf("\n"); } BIM_COMMAND(whatis,"whatis","Describe actions bound to a key in different modes.") { int key = 0; if (argc < 2) { render_commandline_message("(press a key)"); while ((key = bim_getkey(DEFAULT_KEY_WAIT)) == KEY_TIMEOUT); } else if (strlen(argv[1]) > 1 && argv[1][0] == '^') { /* See if it's a valid ctrl key */ if (argv[1][2] != '\0') { goto _invalid_key_name; } if ((unsigned char)argv[1][1] < '@' || (unsigned char)argv[1][1] > '@' + '_') { goto _invalid_key_name; } key = argv[1][1] - '@'; } else if (argv[1][1] != '\0') { for (unsigned int i = 0; i < sizeof(KeyNames)/sizeof(KeyNames[0]); ++i) { if (!strcmp(KeyNames[i].name,argv[1])) { key = KeyNames[i].keycode; } } if (!key) goto _invalid_key_name; } else { key = (unsigned char)argv[1][0]; } struct MappingNames { char * name; struct action_map * map; } maps[] = { {"Normal", NORMAL_MAP}, {"Insert", INSERT_MAP}, {"Replace", REPLACE_MAP}, {"Line Selection", LINE_SELECTION_MAP}, {"Char Selection", CHAR_SELECTION_MAP}, {"Col Selection", COL_SELECTION_MAP}, {"Col Insert", COL_INSERT_MAP}, {"Navigation (Select)", NAVIGATION_MAP}, {"Escape (Select, Insert)", ESCAPE_MAP}, {"Command", COMMAND_MAP}, {"Search", SEARCH_MAP}, {"Input (Command, Search)", INPUT_BUFFER_MAP}, {NULL, NULL}, }; render_commandline_message(""); int found_something = 0; for (struct MappingNames * map = maps; map->name; ++map) { /* See if this key is mapped */ struct action_map * m = map->map; while (m->key != -1) { if (m->key == key) { struct action_def * action = find_action(m->method); render_commandline_message("%s: %s\n", map->name, action ? action->description : "(unmapped)"); found_something = 1; break; } m++; } } if (!found_something) { render_commandline_message("Nothing bound for this key"); } pause_for_key(); return 0; _invalid_key_name: render_error("Invalid key name"); return 1; } BIM_COMMAND(setcolor, "setcolor", "Set colorscheme colors") { #define PRINT_COLOR do { \ render_commandline_message("%20s = ", c->name); \ set_colors(*c->value, *c->value); \ printf(" "); \ set_colors(COLOR_FG, COLOR_BG); \ printf(" %s\n", *c->value); \ } while (0) if (argc < 2) { /* Print colors */ struct ColorName * c = color_names; while (c->name) { PRINT_COLOR; c++; } pause_for_key(); } else { char * colorname = argv[1]; if (argc == 2) { struct ColorName * c = color_names; while (c->name) { if (!strcmp(c->name, colorname)) { PRINT_COLOR; return 0; } c++; } render_error(":setcolor <colorname> <colorvalue>"); return 1; } char * colorvalue = argv[2]; struct ColorName * c = color_names; while (c->name) { if (!strcmp(c->name, colorname)) { *(c->value) = strdup(colorvalue); return 0; } c++; } render_error("Unknown color: %s", colorname); return 1; } return 0; #undef PRINT_COLOR } BIM_COMMAND(checkprop,"checkprop","Check a property value; returns the inverse of the property") { if (argc < 2) { return 1; } if (!strcmp(argv[1],"can_scroll")) return !global_config.can_scroll; else if (!strcmp(argv[1],"can_hideshow")) return !global_config.can_hideshow; else if (!strcmp(argv[1],"can_altscreen")) return !global_config.can_altscreen; else if (!strcmp(argv[1],"can_mouse")) return !global_config.can_mouse; else if (!strcmp(argv[1],"can_unicode")) return !global_config.can_unicode; else if (!strcmp(argv[1],"can_bright")) return !global_config.can_bright; else if (!strcmp(argv[1],"can_title")) return !global_config.can_title; else if (!strcmp(argv[1],"can_bce")) return !global_config.can_bce; else if (!strcmp(argv[1],"can_24bit")) return !global_config.can_24bit; else if (!strcmp(argv[1],"can_256color")) return !global_config.can_256color; else if (!strcmp(argv[1],"can_italic")) return !global_config.can_italic; render_error("Unknown property '%s'", argv[1]); return 1; } BIM_COMMAND(action,"action","Execute a bim action") { if (argc < 2) { render_error("Expected :action <action-name> [arg [arg [arg...]]]"); return 1; } /* Split argument on spaces */ char * action = argv[1]; char * arg1 = NULL, * arg2 = NULL, * arg3 = NULL; if (argc > 2) arg1 = argv[2]; if (argc > 3) arg2 = argv[3]; if (argc > 4) arg3 = argv[4]; /* Find the action */ for (int i = 0; i < flex_mappable_actions_count; ++i) { if (!strcmp(mappable_actions[i].name, action)) { /* Count arguments */ int args = 0; if (mappable_actions[i].options & ARG_IS_CUSTOM) args++; if (mappable_actions[i].options & ARG_IS_INPUT) args++; if (mappable_actions[i].options & ARG_IS_PROMPT) args++; if (args == 0) { mappable_actions[i].action(); } else if (args == 1) { if (!arg1) { render_error("Expected one argument"); return 1; } mappable_actions[i].action(atoi(arg1)); } else if (args == 2) { if (!arg2) { render_error("Expected two arguments"); return 1; } mappable_actions[i].action(atoi(arg1), atoi(arg2)); } else if (args == 3) { if (!arg3) { render_error("Expected three arguments"); return 1; } mappable_actions[i].action(atoi(arg1), atoi(arg2), atoi(arg3)); } return 0; } } render_error("Unknown action: %s", action); return 1; } char * describe_options(int options) { static char out[16]; memset(out,0,sizeof(out)); if (options & opt_rep) strcat(out,"r"); /* Repeats */ if (options & opt_arg) strcat(out,"a"); /* takes Argument */ if (options & opt_char) strcat(out,"c"); /* takes Character */ if (options & opt_nav) strcat(out,"n"); /* consumes Nav buffer */ if (options & opt_rw) strcat(out,"w"); /* read-Write */ if (options & opt_norm) strcat(out,"m"); /* changes Mode */ if (options & opt_byte) strcat(out,"b"); /* takes Byte */ return out; } void dump_map_commands(const char * name, struct action_map * map) { struct action_map * m = map; while (m->key != -1) { struct action_def * action = find_action(m->method); fprintf(stdout,"mapkey %s %s %s", name, name_from_key(m->key), action ? action->name : "none"); if (m->options) { printf(" %s", describe_options(m->options)); if (m->options & opt_arg) { printf(" %d", m->arg); } } printf("\n"); m++; } } BIM_COMMAND(mapkey,"mapkey","Map a key to an action.") { if (argc < 2) goto _argument_error; char * mode = argv[1]; char * key = strstr(mode," "); if (!key) goto _argument_error; *key = '\0'; key++; char * action = strstr(key," "); if (!action) goto _argument_error; *action = '\0'; action++; /* Options are optional */ char * options = strstr(action, " "); char * arg = NULL; if (options) { *options = '\0'; options++; arg = strstr(options, " "); if (arg) { *arg = '\0'; arg++; } } render_status_message("Going to map key %s in mode %s to action %s with options %s, %s", key, mode, action, options, arg); /* Convert mode to mode name */ struct action_map ** mode_map = NULL; for (struct mode_names * m = mode_names; m->name; ++m) { if (!strcmp(m->name, mode)) { mode_map = m->mode; break; } } if (!mode_map) { render_error("invalid mode: %s", mode); return 1; } enum Key keycode = key_from_name(key); if (keycode == -1) { render_error("invalid key: %s", key); return 1; } struct action_def * action_def = NULL; for (int i = 0; i < flex_mappable_actions_count; ++i) { if (!strcmp(mappable_actions[i].name, action)) { action_def = &mappable_actions[i]; break; } } if (!action_def) { render_error("invalid action: %s", action); return 1; } /* Sanity check required options */ if ((action_def->options & ARG_IS_CUSTOM) && (!options || (!strchr(options,'a') && !strchr(options,'n')))) goto _action_sanity; if ((action_def->options & ARG_IS_PROMPT) && (!options || (!strchr(options,'c') && !strchr(options,'b')))) goto _action_sanity; if ((action_def->options & ACTION_IS_RW) && (!options || !strchr(options,'w'))) goto _action_sanity; int option_map = 0; if (options) { for (char * o = options; *o; ++o) { switch (*o) { case 'r': option_map |= opt_rep; break; case 'a': option_map |= opt_arg; break; case 'c': option_map |= opt_char; break; case 'n': option_map |= opt_nav; break; case 'w': option_map |= opt_rw; break; case 'm': option_map |= opt_norm; break; case 'b': option_map |= opt_byte; break; default: render_error("Invalid option flag: %c", *o); return 1; } } } if ((option_map & opt_arg) && !arg) { render_error("flag 'a' requires an additional argument"); return 1; } int arg_value = (option_map & opt_arg) ? atoi(arg) : 0; /* Make space */ struct action_map * candidate = NULL; for (struct action_map * m = *mode_map; m->key != -1; ++m) { if (m->key == keycode) { candidate = m; break; } } if (!candidate) { /* get size */ int len = 0; for (struct action_map * m = *mode_map; m->key != -1; m++, len++); *mode_map = realloc(*mode_map, sizeof(struct action_map) * (len + 2)); candidate = &(*mode_map)[len]; (*mode_map)[len+1].key = -1; } candidate->key = keycode; candidate->method = action_def->action; candidate->options = option_map; candidate->arg = arg_value; return 0; _action_sanity: render_error("action %s requires missing flag", action); return 1; _argument_error: render_error("usage: mapkey MODE KEY ACTION [OPTIONS [ARG]]"); return 1; } int main(int argc, char * argv[]) { findBim(argv); int opt; while ((opt = getopt(argc, argv, "?c:C:u:RS:O:-:")) != -1) { switch (opt) { case 'R': global_config.initial_file_is_read_only = 1; break; case 'c': case 'C': /* Print file to stdout using our syntax highlighting and color theme */ initialize(); global_config.use_biminfo = 0; global_config.go_to_line = 0; open_file(optarg); for (int i = 0; i < env->line_count; ++i) { recalculate_syntax(env->lines[i], i); if (opt == 'C') { draw_line_number(i); } render_line(env->lines[i], 6 * (env->lines[i]->actual + 1), 0, -1); reset(); fprintf(stdout, "\n"); } return 0; case 'u': global_config.bimrc_path = optarg; break; case 'S': global_config.syntax_fallback = optarg; break; case 'O': /* Set various display options */ if (set_capability(optarg)) { fprintf(stderr, "%s: unrecognized -O option: %s\n", argv[0], optarg); return 1; } break; case '-': if (!strcmp(optarg,"version")) { initialize(); /* Need to load bimrc to get themes */ update_screen_size(); /* Get terminal size if possible */ fprintf(stderr, "\033[1mbim\033[0m %s%s\n%s\n\n", BIM_VERSION, BIM_BUILD_DATE, BIM_COPYRIGHT); #define SECTION(title) do { \ int x, width; \ width = 2 + display_width_of_string(title); \ fprintf(stderr, " \033[1m%s\033[0m:", title); \ x = width; #define ENDSECTION() fprintf(stderr, "\n\n"); } while (0) #define ITEM(str) do { \ int my_width = display_width_of_string(str); \ if (x + my_width + 1 >= global_config.term_width) { \ fprintf(stderr, "\n"); \ for (x = 0; x <= width; ++x) fprintf(stderr, " "); \ fprintf(stderr, "%s", str); \ x += width; \ } else { \ fprintf(stderr, " %s", str); \ x += my_width + 1; \ } } while(0) SECTION("Syntax"); for (struct syntax_definition * s = syntaxes; syntaxes && s->name; ++s) { ITEM(s->name); } ENDSECTION(); SECTION("Themes"); for (struct theme_def * d = themes; themes && d->name; ++d) { ITEM(d->name); } ENDSECTION(); return 0; } else if (!strcmp(optarg,"help")) { show_usage(argv); return 0; } else if (!strcmp(optarg,"dump-mappings")) { initialize(); for (struct mode_names * m = mode_names; m->name; ++m) { dump_mapping(m->description, *m->mode); } return 0; } else if (!strcmp(optarg,"dump-commands")) { initialize(); dump_commands(); return 0; } else if (!strcmp(optarg,"html")) { if (optind >= argc) { show_usage(argv); return 1; } initialize(); global_config.go_to_line = 0; open_file(argv[optind]); for (int i = 0; i < env->line_count; ++i) { recalculate_syntax(env->lines[i], i); } convert_to_html(); /* write to stdout */ output_file(env, stdout); return 0; } else if (!strcmp(optarg,"dump-config")) { initialize(); /* Dump a config file representing the current key mappings */ for (struct mode_names * m = mode_names; m->name; ++m) { dump_map_commands(m->name, *m->mode); } return 0; } else if (strlen(optarg)) { fprintf(stderr, "bim: unrecognized option `%s'\n", optarg); return 1; } /* Else, this is -- to indicate end of arguments */ break; case '?': show_usage(argv); return 0; } } /* Set up terminal */ initialize(); init_terminal(); /* Open file */ if (argc > optind) { while (argc > optind) { open_file(argv[optind]); update_title(); if (global_config.initial_file_is_read_only) { env->readonly = 1; } optind++; } env = buffers[0]; } else { env = buffer_new(); setup_buffer(env); } update_title(); /* Draw the screen once */ redraw_all(); /* Start accepting key commands */ normal_mode(); return 0; }