| File: | fe-text/textbuffer-view.c |
| Location: | line 414, column 7 |
| Description: | Dereference of null pointer. |
| 1 | /* |
| 2 | textbuffer-view.c : Text buffer handling |
| 3 | |
| 4 | Copyright (C) 1999-2001 Timo Sirainen |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License along |
| 17 | with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | */ |
| 20 | |
| 21 | #define G_LOG_DOMAIN"TextBufferView" "TextBufferView" |
| 22 | |
| 23 | #include "module.h" |
| 24 | #include "textbuffer-view.h" |
| 25 | #include "utf8.h" |
| 26 | |
| 27 | typedef struct { |
| 28 | char *name; |
| 29 | LINE_REC *line; |
| 30 | } BOOKMARK_REC; |
| 31 | |
| 32 | /* how often to scan line cache for lines not accessed for a while (ms) */ |
| 33 | #define LINE_CACHE_CHECK_TIME(5*60*1000) (5*60*1000) |
| 34 | /* how long to keep line cache in memory (seconds) */ |
| 35 | #define LINE_CACHE_KEEP_TIME(10*60) (10*60) |
| 36 | |
| 37 | static int linecache_tag; |
| 38 | static GSList *views; |
| 39 | |
| 40 | #define view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height) \ |
| 41 | ((view)->ypos >= -1 && (view)->ypos < (view)->height) |
| 42 | |
| 43 | #define view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count \ |
| 44 | textbuffer_view_get_line_cache(view, line)->count |
| 45 | |
| 46 | static GSList *textbuffer_get_views(TEXT_BUFFER_REC *buffer) |
| 47 | { |
| 48 | GSList *tmp, *list; |
| 49 | |
| 50 | for (tmp = views; tmp != NULL((void *)0); tmp = tmp->next) { |
| 51 | TEXT_BUFFER_VIEW_REC *view = tmp->data; |
| 52 | |
| 53 | if (view->buffer == buffer) { |
| 54 | list = g_slist_copy(view->siblings); |
| 55 | return g_slist_prepend(list, view); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | return NULL((void *)0); |
| 60 | } |
| 61 | |
| 62 | static TEXT_BUFFER_CACHE_REC * |
| 63 | textbuffer_cache_get(GSList *views, int width) |
| 64 | { |
| 65 | TEXT_BUFFER_CACHE_REC *cache; |
| 66 | |
| 67 | /* check if there's existing cache with correct width */ |
| 68 | while (views != NULL((void *)0)) { |
| 69 | TEXT_BUFFER_VIEW_REC *view = views->data; |
| 70 | |
| 71 | if (view->width == width) { |
| 72 | view->cache->refcount++; |
| 73 | return view->cache; |
| 74 | } |
| 75 | views = views->next; |
| 76 | } |
| 77 | |
| 78 | /* create new cache */ |
| 79 | cache = g_new0(TEXT_BUFFER_CACHE_REC, 1)((TEXT_BUFFER_CACHE_REC *) g_malloc0 (((gsize) sizeof (TEXT_BUFFER_CACHE_REC )) * ((gsize) (1)))); |
| 80 | cache->refcount = 1; |
| 81 | cache->width = width; |
| 82 | cache->line_cache = g_hash_table_new((GHashFunc) g_direct_hash, |
| 83 | (GCompareFunc) g_direct_equal); |
| 84 | return cache; |
| 85 | } |
| 86 | |
| 87 | static int line_cache_destroy(void *key, LINE_CACHE_REC *cache) |
| 88 | { |
| 89 | g_free(cache); |
| 90 | return TRUE(!(0)); |
| 91 | } |
| 92 | |
| 93 | static void textbuffer_cache_destroy(TEXT_BUFFER_CACHE_REC *cache) |
| 94 | { |
| 95 | g_hash_table_foreach(cache->line_cache, |
| 96 | (GHFunc) line_cache_destroy, NULL((void *)0)); |
| 97 | g_hash_table_destroy(cache->line_cache); |
| 98 | g_free(cache); |
| 99 | } |
| 100 | |
| 101 | static void textbuffer_cache_unref(TEXT_BUFFER_CACHE_REC *cache) |
| 102 | { |
| 103 | if (--cache->refcount == 0) |
| 104 | textbuffer_cache_destroy(cache); |
| 105 | } |
| 106 | |
| 107 | #define FGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0100 | 0x0f) (ATTR_NOCOLORS(0x1000|0x2000|0x0800|0x0400) | ATTR_RESETFG0x0100 | 0x0f) |
| 108 | #define BGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0200 | 0xf0) (ATTR_NOCOLORS(0x1000|0x2000|0x0800|0x0400) | ATTR_RESETBG0x0200 | 0xf0) |
| 109 | |
| 110 | static void update_cmd_color(unsigned char cmd, int *color) |
| 111 | { |
| 112 | if ((cmd & 0x80) == 0) { |
| 113 | if (cmd & LINE_COLOR_BG0x20) { |
| 114 | /* set background color */ |
| 115 | *color &= FGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0100 | 0x0f); |
| 116 | if ((cmd & LINE_COLOR_DEFAULT0x10) == 0) |
| 117 | *color |= (cmd & 0x0f) << 4; |
| 118 | else { |
| 119 | *color = (*color & FGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0100 | 0x0f)) | ATTR_RESETBG0x0200; |
| 120 | } |
| 121 | } else { |
| 122 | /* set foreground color */ |
| 123 | *color &= BGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0200 | 0xf0); |
| 124 | if ((cmd & LINE_COLOR_DEFAULT0x10) == 0) |
| 125 | *color |= cmd & 0x0f; |
| 126 | else { |
| 127 | *color = (*color & BGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0200 | 0xf0)) | ATTR_RESETFG0x0100; |
| 128 | } |
| 129 | } |
| 130 | } else switch (cmd) { |
| 131 | case LINE_CMD_UNDERLINE: |
| 132 | *color ^= ATTR_UNDERLINE0x1000; |
| 133 | break; |
| 134 | case LINE_CMD_REVERSE: |
| 135 | *color ^= ATTR_REVERSE0x2000; |
| 136 | break; |
| 137 | case LINE_CMD_BLINK: |
| 138 | *color ^= ATTR_BLINK0x0800; |
| 139 | break; |
| 140 | case LINE_CMD_BOLD: |
| 141 | *color ^= ATTR_BOLD0x0400; |
| 142 | break; |
| 143 | case LINE_CMD_COLOR0: |
| 144 | *color &= BGATTR((0x1000|0x2000|0x0800|0x0400) | 0x0200 | 0xf0); |
| 145 | break; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | static inline unichar read_unichar(const unsigned char *data, const unsigned char **next, int *width) |
| 150 | { |
| 151 | unichar chr = g_utf8_get_char_validated(data, -1); |
| 152 | |
| 153 | if (chr & 0x80000000) { |
| 154 | chr = 0xfffd; |
| 155 | *next = data + 1; |
| 156 | *width = 1; |
| 157 | } else { |
| 158 | *next = g_utf8_next_char(data)(char *)((data) + g_utf8_skip[*(const guchar *)(data)]); |
| 159 | *width = unichar_isprint(chr)(((chr) & ~0x80) >= 32) ? mk_wcwidth(chr) : 1; |
| 160 | } |
| 161 | return chr; |
| 162 | } |
| 163 | |
| 164 | static LINE_CACHE_REC * |
| 165 | view_update_line_cache(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 166 | { |
| 167 | INDENT_FUNC indent_func; |
| 168 | LINE_CACHE_REC *rec; |
| 169 | LINE_CACHE_SUB_REC *sub; |
| 170 | GSList *lines; |
| 171 | unsigned char cmd; |
| 172 | const unsigned char *ptr, *next_ptr, *last_space_ptr; |
| 173 | int xpos, pos, indent_pos, last_space, last_color, color, linecount; |
| 174 | int char_width; |
| 175 | |
| 176 | g_return_val_if_fail(line->text != NULL, NULL)do{ if (line->text != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "line->text != NULL" ); return (((void *)0)); }; }while (0); |
| 177 | |
| 178 | color = ATTR_RESETFG0x0100 | ATTR_RESETBG0x0200; |
| 179 | xpos = 0; indent_pos = view->default_indent; |
| 180 | last_space = last_color = 0; last_space_ptr = NULL((void *)0); sub = NULL((void *)0); |
| 181 | |
| 182 | indent_func = view->default_indent_func; |
| 183 | linecount = 1; |
| 184 | lines = NULL((void *)0); |
| 185 | for (ptr = line->text;;) { |
| 186 | if (*ptr == '\0') { |
| 187 | /* command */ |
| 188 | ptr++; |
| 189 | cmd = *ptr; |
| 190 | ptr++; |
| 191 | |
| 192 | if (cmd == LINE_CMD_EOL) |
| 193 | break; |
| 194 | |
| 195 | if (cmd == LINE_CMD_CONTINUE) { |
| 196 | unsigned char *tmp; |
| 197 | |
| 198 | memcpy(&tmp, ptr, sizeof(char *)); |
| 199 | ptr = tmp; |
| 200 | continue; |
| 201 | } |
| 202 | |
| 203 | if (cmd == LINE_CMD_INDENT) { |
| 204 | /* set indentation position here - don't do |
| 205 | it if we're too close to right border */ |
| 206 | if (xpos < view->width-5) indent_pos = xpos; |
| 207 | } else |
| 208 | update_cmd_color(cmd, &color); |
| 209 | continue; |
| 210 | } |
| 211 | |
| 212 | if (!view->utf8) { |
| 213 | /* MH */ |
| 214 | if (term_type != TERM_TYPE_BIG52 || |
| 215 | ptr[1] == '\0' || !is_big5(ptr[0], ptr[1])((0x81 <= (ptr[0]) && (ptr[0]) <= 0xFE) && (((0x40 <= (ptr[1]) && (ptr[1]) <= 0x7E) || (0x80 <= (ptr[1]) && (ptr[1]) <= 0xFE))))) |
| 216 | char_width = 1; |
| 217 | else |
| 218 | char_width = 2; |
| 219 | next_ptr = ptr+char_width; |
| 220 | } else { |
| 221 | read_unichar(ptr, &next_ptr, &char_width); |
| 222 | } |
| 223 | |
| 224 | if (xpos + char_width > view->width && sub != NULL((void *)0) && |
| 225 | (last_space <= indent_pos || last_space <= 10) && |
| 226 | view->longword_noindent) { |
| 227 | /* long word, remove the indentation from this line */ |
| 228 | xpos -= sub->indent; |
| 229 | sub->indent = 0; |
| 230 | } |
| 231 | |
| 232 | if (xpos + char_width > view->width) { |
| 233 | xpos = indent_func == NULL((void *)0) ? indent_pos : |
| 234 | indent_func(view, line, -1); |
| 235 | |
| 236 | sub = g_new0(LINE_CACHE_SUB_REC, 1)((LINE_CACHE_SUB_REC *) g_malloc0 (((gsize) sizeof (LINE_CACHE_SUB_REC )) * ((gsize) (1)))); |
| 237 | if (last_space > indent_pos && last_space > 10) { |
| 238 | /* go back to last space */ |
| 239 | color = last_color; |
| 240 | ptr = last_space_ptr; |
| 241 | while (*ptr == ' ') ptr++; |
| 242 | } else if (view->longword_noindent) { |
| 243 | /* long word, no indentation in next line */ |
| 244 | xpos = 0; |
| 245 | sub->continues = TRUE(!(0)); |
| 246 | } |
| 247 | |
| 248 | sub->start = ptr; |
| 249 | sub->indent = xpos; |
| 250 | sub->indent_func = indent_func; |
| 251 | sub->color = color; |
| 252 | |
| 253 | lines = g_slist_append(lines, sub); |
| 254 | linecount++; |
| 255 | |
| 256 | last_space = 0; |
| 257 | continue; |
| 258 | } |
| 259 | |
| 260 | if (!view->utf8 && char_width > 1) { |
| 261 | last_space = xpos; |
| 262 | last_space_ptr = next_ptr; |
| 263 | last_color = color; |
| 264 | } else if (*ptr == ' ') { |
| 265 | last_space = xpos; |
| 266 | last_space_ptr = ptr; |
| 267 | last_color = color; |
| 268 | } |
| 269 | |
| 270 | xpos += char_width; |
| 271 | ptr = next_ptr; |
| 272 | } |
| 273 | |
| 274 | rec = g_malloc(sizeof(LINE_CACHE_REC)-sizeof(LINE_CACHE_SUB_REC) + |
| 275 | sizeof(LINE_CACHE_SUB_REC) * (linecount-1)); |
| 276 | rec->last_access = time(NULL((void *)0)); |
| 277 | rec->count = linecount; |
| 278 | |
| 279 | if (rec->count > 1) { |
| 280 | for (pos = 0; lines != NULL((void *)0); pos++) { |
| 281 | void *data = lines->data; |
| 282 | |
| 283 | memcpy(&rec->lines[pos], data, |
| 284 | sizeof(LINE_CACHE_SUB_REC)); |
| 285 | |
| 286 | lines = g_slist_remove(lines, data); |
| 287 | g_free(data); |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | g_hash_table_insert(view->cache->line_cache, line, rec); |
| 292 | return rec; |
| 293 | } |
| 294 | |
| 295 | static void view_remove_cache(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line, |
| 296 | unsigned char update_counter) |
| 297 | { |
| 298 | LINE_CACHE_REC *cache; |
| 299 | |
| 300 | if (view->cache->update_counter == update_counter) |
| 301 | return; |
| 302 | view->cache->update_counter = update_counter; |
| 303 | |
| 304 | cache = g_hash_table_lookup(view->cache->line_cache, line); |
| 305 | if (cache != NULL((void *)0)) { |
| 306 | g_free(cache); |
| 307 | g_hash_table_remove(view->cache->line_cache, line); |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | static void view_update_cache(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line, |
| 312 | unsigned char update_counter) |
| 313 | { |
| 314 | view_remove_cache(view, line, update_counter); |
| 315 | |
| 316 | if (view->buffer->cur_line == line) |
| 317 | view->cache->last_linecount = view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 318 | } |
| 319 | |
| 320 | static void view_reset_cache(TEXT_BUFFER_VIEW_REC *view) |
| 321 | { |
| 322 | GSList *tmp; |
| 323 | |
| 324 | /* destroy line caches - note that you can't do simultaneously |
| 325 | unrefs + cache_get()s or it will keep using the old caches */ |
| 326 | textbuffer_cache_unref(view->cache); |
| 327 | g_slist_foreach(view->siblings, (GFunc) textbuffer_cache_unref, NULL((void *)0)); |
| 328 | |
| 329 | view->cache = textbuffer_cache_get(view->siblings, view->width); |
| 330 | for (tmp = view->siblings; tmp != NULL((void *)0); tmp = tmp->next) { |
| 331 | TEXT_BUFFER_VIEW_REC *rec = tmp->data; |
| 332 | |
| 333 | rec->cache = textbuffer_cache_get(rec->siblings, rec->width); |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | static int view_line_draw(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line, |
| 338 | int subline, int ypos, int max) |
| 339 | { |
| 340 | INDENT_FUNC indent_func; |
| 341 | LINE_CACHE_REC *cache; |
| 342 | const unsigned char *text, *end, *text_newline; |
| 343 | unsigned char *tmp; |
| 344 | unichar chr; |
| 345 | int xpos, color, drawcount, first, need_move, need_clrtoeol, char_width; |
| 346 | |
| 347 | if (view->dirty) /* don't bother drawing anything - redraw is coming */ |
[1] Taking false branch | |
| 348 | return 0; |
| 349 | |
| 350 | cache = textbuffer_view_get_line_cache(view, line); |
| 351 | if (subline >= cache->count) |
[2] Taking false branch | |
| 352 | return 0; |
| 353 | |
| 354 | color = ATTR_RESET(0x0100|0x0200); |
| 355 | need_move = TRUE(!(0)); need_clrtoeol = FALSE(0); |
| 356 | xpos = drawcount = 0; first = TRUE(!(0)); |
| 357 | text_newline = text = |
| 358 | subline == 0 ? line->text : cache->lines[subline-1].start; |
[3] '?' condition evaluates to false | |
| 359 | for (;;) { |
[4] Loop condition is true. Entering loop body | |
[18] Loop condition is true. Entering loop body | |
| 360 | if (text == text_newline) { |
[5] Taking true branch | |
[19] Taking true branch | |
| 361 | if (need_clrtoeol && xpos < term_width) { |
[6] Taking false branch | |
[20] Taking false branch | |
| 362 | term_set_color(view->window, ATTR_RESET(0x0100|0x0200)); |
| 363 | term_clrtoeol(view->window); |
| 364 | } |
| 365 | |
| 366 | if (first) |
[7] Taking true branch | |
[21] Taking false branch | |
| 367 | first = FALSE(0); |
| 368 | else { |
| 369 | ypos++; |
| 370 | if (--max == 0) |
[22] Taking false branch | |
| 371 | break; |
| 372 | } |
| 373 | |
| 374 | if (subline > 0) { |
[8] Taking true branch | |
[23] Taking false branch | |
| 375 | /* continuing previous line - indent it */ |
| 376 | indent_func = cache->lines[subline-1].indent_func; |
| 377 | if (indent_func == NULL((void *)0)) |
[9] Taking true branch | |
| 378 | xpos = cache->lines[subline-1].indent; |
| 379 | color = cache->lines[subline-1].color; |
| 380 | } else { |
| 381 | indent_func = NULL((void *)0); |
| 382 | } |
| 383 | |
| 384 | if (xpos == 0 && indent_func == NULL((void *)0)) |
[10] Taking false branch | |
[24] Taking false branch | |
| 385 | need_clrtoeol = TRUE(!(0)); |
| 386 | else { |
| 387 | /* line was indented - need to clear the |
| 388 | indented area first */ |
| 389 | term_set_color(view->window, ATTR_RESET(0x0100|0x0200)); |
| 390 | term_move(view->window, 0, ypos); |
| 391 | term_clrtoeol(view->window); |
| 392 | |
| 393 | if (indent_func != NULL((void *)0)) |
[11] Taking false branch | |
[25] Taking false branch | |
| 394 | xpos = indent_func(view, line, ypos); |
| 395 | } |
| 396 | |
| 397 | if (need_move || xpos > 0) |
[12] Taking true branch | |
[26] Taking false branch | |
| 398 | term_move(view->window, xpos, ypos); |
| 399 | |
| 400 | term_set_color(view->window, color); |
| 401 | |
| 402 | if (subline == cache->count-1) { |
[13] Taking true branch | |
[27] Taking false branch | |
| 403 | text_newline = NULL((void *)0); |
| 404 | need_move = FALSE(0); |
| 405 | } else { |
| 406 | /* get the beginning of the next subline */ |
| 407 | text_newline = cache->lines[subline].start; |
| 408 | need_move = !cache->lines[subline].continues; |
| 409 | } |
| 410 | drawcount++; |
| 411 | subline++; |
| 412 | } |
| 413 | |
| 414 | if (*text == '\0') { |
[14] Taking true branch | |
[28] Dereference of null pointer | |
| 415 | /* command */ |
| 416 | text++; |
| 417 | if (*text == LINE_CMD_EOL) |
[15] Taking false branch | |
| 418 | break; |
| 419 | |
| 420 | if (*text == LINE_CMD_CONTINUE) { |
[16] Taking true branch | |
| 421 | /* jump to next block */ |
| 422 | memcpy(&tmp, text+1, sizeof(unsigned char *)); |
| 423 | text = tmp; |
| 424 | continue; |
[17] Execution continues on line 359 | |
| 425 | } else { |
| 426 | update_cmd_color(*text, &color); |
| 427 | term_set_color(view->window, color); |
| 428 | } |
| 429 | text++; |
| 430 | continue; |
| 431 | } |
| 432 | |
| 433 | if (view->utf8) { |
| 434 | chr = read_unichar(text, &end, &char_width); |
| 435 | } else { |
| 436 | chr = *text; |
| 437 | end = text; |
| 438 | if (term_type == TERM_TYPE_BIG52 && |
| 439 | is_big5(end[0], end[1])((0x81 <= (end[0]) && (end[0]) <= 0xFE) && (((0x40 <= (end[1]) && (end[1]) <= 0x7E) || (0x80 <= (end[1]) && (end[1]) <= 0xFE))))) |
| 440 | char_width = 2; |
| 441 | else |
| 442 | char_width = 1; |
| 443 | end += char_width; |
| 444 | } |
| 445 | |
| 446 | xpos += char_width; |
| 447 | if (xpos <= term_width) { |
| 448 | if (unichar_isprint(chr)(((chr) & ~0x80) >= 32)) { |
| 449 | if (view->utf8) |
| 450 | term_add_unichar(view->window, chr); |
| 451 | else |
| 452 | for (; text < end; text++) |
| 453 | term_addch(view->window, *text); |
| 454 | } else { |
| 455 | /* low-ascii */ |
| 456 | term_set_color(view->window, ATTR_RESET(0x0100|0x0200)|ATTR_REVERSE0x2000); |
| 457 | term_addch(view->window, (chr & 127)+'A'-1); |
| 458 | term_set_color(view->window, color); |
| 459 | } |
| 460 | } |
| 461 | text = end; |
| 462 | } |
| 463 | |
| 464 | if (need_clrtoeol && xpos < term_width) { |
| 465 | term_set_color(view->window, ATTR_RESET(0x0100|0x0200)); |
| 466 | term_clrtoeol(view->window); |
| 467 | } |
| 468 | |
| 469 | return drawcount; |
| 470 | } |
| 471 | |
| 472 | /* Recalculate view's bottom line information - try to keep the |
| 473 | original if possible */ |
| 474 | static void textbuffer_view_init_bottom(TEXT_BUFFER_VIEW_REC *view) |
| 475 | { |
| 476 | LINE_REC *line; |
| 477 | int linecount, total; |
| 478 | |
| 479 | if (view->empty_linecount == 0) { |
| 480 | /* no empty lines in screen, no need to try to keep |
| 481 | the old bottom startline */ |
| 482 | view->bottom_startline = NULL((void *)0); |
| 483 | } |
| 484 | |
| 485 | total = 0; |
| 486 | line = textbuffer_line_last(view->buffer); |
| 487 | for (; line != NULL((void *)0); line = line->prev) { |
| 488 | linecount = view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 489 | if (line == view->bottom_startline) { |
| 490 | /* keep the old one, make sure that subline is ok */ |
| 491 | if (view->bottom_subline > linecount) |
| 492 | view->bottom_subline = linecount; |
| 493 | view->empty_linecount = view->height - total - |
| 494 | (linecount-view->bottom_subline); |
| 495 | return; |
| 496 | } |
| 497 | |
| 498 | total += linecount; |
| 499 | if (total >= view->height) { |
| 500 | view->bottom_startline = line; |
| 501 | view->bottom_subline = total - view->height; |
| 502 | view->empty_linecount = 0; |
| 503 | return; |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | /* not enough lines so we must be at the beginning of the buffer */ |
| 508 | view->bottom_startline = view->buffer->first_line; |
| 509 | view->bottom_subline = 0; |
| 510 | view->empty_linecount = view->height - total; |
| 511 | } |
| 512 | |
| 513 | static void textbuffer_view_init_ypos(TEXT_BUFFER_VIEW_REC *view) |
| 514 | { |
| 515 | LINE_REC *line; |
| 516 | |
| 517 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 518 | |
| 519 | view->ypos = -view->subline-1; |
| 520 | for (line = view->startline; line != NULL((void *)0); line = line->next) |
| 521 | view->ypos += view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 522 | } |
| 523 | |
| 524 | /* Create new view. */ |
| 525 | TEXT_BUFFER_VIEW_REC *textbuffer_view_create(TEXT_BUFFER_REC *buffer, |
| 526 | int width, int height, |
| 527 | int scroll, int utf8) |
| 528 | { |
| 529 | TEXT_BUFFER_VIEW_REC *view; |
| 530 | |
| 531 | g_return_val_if_fail(buffer != NULL, NULL)do{ if (buffer != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "buffer != NULL"); return (((void *)0)); }; }while (0); |
| 532 | g_return_val_if_fail(width > 0, NULL)do{ if (width > 0) { } else { g_return_if_fail_warning ("TextBufferView" , __PRETTY_FUNCTION__, "width > 0"); return (((void *)0)); }; }while (0); |
| 533 | |
| 534 | view = g_new0(TEXT_BUFFER_VIEW_REC, 1)((TEXT_BUFFER_VIEW_REC *) g_malloc0 (((gsize) sizeof (TEXT_BUFFER_VIEW_REC )) * ((gsize) (1)))); |
| 535 | view->buffer = buffer; |
| 536 | view->siblings = textbuffer_get_views(buffer); |
| 537 | |
| 538 | view->width = width; |
| 539 | view->height = height; |
| 540 | view->scroll = scroll; |
| 541 | view->utf8 = utf8; |
| 542 | |
| 543 | view->cache = textbuffer_cache_get(view->siblings, width); |
| 544 | textbuffer_view_init_bottom(view); |
| 545 | |
| 546 | view->startline = view->bottom_startline; |
| 547 | view->subline = view->bottom_subline; |
| 548 | view->bottom = TRUE(!(0)); |
| 549 | |
| 550 | textbuffer_view_init_ypos(view); |
| 551 | |
| 552 | view->bookmarks = g_hash_table_new((GHashFunc) g_str_hash, |
| 553 | (GCompareFunc) g_str_equal); |
| 554 | |
| 555 | views = g_slist_append(views, view); |
| 556 | return view; |
| 557 | } |
| 558 | |
| 559 | /* Destroy the view. */ |
| 560 | void textbuffer_view_destroy(TEXT_BUFFER_VIEW_REC *view) |
| 561 | { |
| 562 | GSList *tmp; |
| 563 | |
| 564 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 565 | |
| 566 | views = g_slist_remove(views, view); |
| 567 | |
| 568 | if (view->siblings == NULL((void *)0)) { |
| 569 | /* last view for textbuffer, destroy */ |
| 570 | textbuffer_destroy(view->buffer); |
| 571 | } else { |
| 572 | /* remove ourself from siblings lists */ |
| 573 | for (tmp = view->siblings; tmp != NULL((void *)0); tmp = tmp->next) { |
| 574 | TEXT_BUFFER_VIEW_REC *rec = tmp->data; |
| 575 | |
| 576 | rec->siblings = g_slist_remove(rec->siblings, view); |
| 577 | } |
| 578 | g_slist_free(view->siblings); |
| 579 | } |
| 580 | |
| 581 | g_hash_table_foreach(view->bookmarks, (GHFunc) g_free, NULL((void *)0)); |
| 582 | g_hash_table_destroy(view->bookmarks); |
| 583 | |
| 584 | textbuffer_cache_unref(view->cache); |
| 585 | g_free(view); |
| 586 | } |
| 587 | |
| 588 | /* Change the default indent position */ |
| 589 | void textbuffer_view_set_default_indent(TEXT_BUFFER_VIEW_REC *view, |
| 590 | int default_indent, |
| 591 | int longword_noindent, |
| 592 | INDENT_FUNC indent_func) |
| 593 | { |
| 594 | if (default_indent != -1) |
| 595 | view->default_indent = default_indent; |
| 596 | if (longword_noindent != -1) |
| 597 | view->longword_noindent = longword_noindent; |
| 598 | |
| 599 | view->default_indent_func = indent_func; |
| 600 | } |
| 601 | |
| 602 | static void view_unregister_indent_func(TEXT_BUFFER_VIEW_REC *view, |
| 603 | INDENT_FUNC indent_func) |
| 604 | { |
| 605 | if (view->default_indent_func == indent_func) |
| 606 | view->default_indent_func = NULL((void *)0); |
| 607 | |
| 608 | /* recreate cache so it won't contain references |
| 609 | to the indent function */ |
| 610 | view_reset_cache(view); |
| 611 | view->cache = textbuffer_cache_get(view->siblings, view->width); |
| 612 | } |
| 613 | |
| 614 | void textbuffer_views_unregister_indent_func(INDENT_FUNC indent_func) |
| 615 | { |
| 616 | g_slist_foreach(views, (GFunc) view_unregister_indent_func, |
| 617 | (void *) indent_func); |
| 618 | } |
| 619 | |
| 620 | void textbuffer_view_set_scroll(TEXT_BUFFER_VIEW_REC *view, int scroll) |
| 621 | { |
| 622 | view->scroll = scroll; |
| 623 | } |
| 624 | |
| 625 | void textbuffer_view_set_utf8(TEXT_BUFFER_VIEW_REC *view, int utf8) |
| 626 | { |
| 627 | view->utf8 = utf8; |
| 628 | } |
| 629 | |
| 630 | static int view_get_linecount_all(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 631 | { |
| 632 | int linecount; |
| 633 | |
| 634 | linecount = 0; |
| 635 | while (line != NULL((void *)0)) { |
| 636 | linecount += view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 637 | line = line->next; |
| 638 | } |
| 639 | |
| 640 | return linecount; |
| 641 | } |
| 642 | |
| 643 | static void view_draw(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line, |
| 644 | int subline, int ypos, int lines, int fill_bottom) |
| 645 | { |
| 646 | int linecount; |
| 647 | |
| 648 | if (view->dirty) /* don't bother drawing anything - redraw is coming */ |
| 649 | return; |
| 650 | |
| 651 | while (line != NULL((void *)0) && lines > 0) { |
| 652 | linecount = view_line_draw(view, line, subline, ypos, lines); |
| 653 | ypos += linecount; lines -= linecount; |
| 654 | |
| 655 | subline = 0; |
| 656 | line = line->next; |
| 657 | } |
| 658 | |
| 659 | if (fill_bottom) { |
| 660 | /* clear the rest of the view */ |
| 661 | term_set_color(view->window, ATTR_RESET(0x0100|0x0200)); |
| 662 | while (lines > 0) { |
| 663 | term_move(view->window, 0, ypos); |
| 664 | term_clrtoeol(view->window); |
| 665 | ypos++; lines--; |
| 666 | } |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | #define view_draw_top(view, lines, fill_bottom)view_draw(view, (view)->startline, (view)->subline, 0, lines , fill_bottom) \ |
| 671 | view_draw(view, (view)->startline, (view)->subline, \ |
| 672 | 0, lines, fill_bottom) |
| 673 | |
| 674 | static void view_draw_bottom(TEXT_BUFFER_VIEW_REC *view, int lines) |
| 675 | { |
| 676 | LINE_REC *line; |
| 677 | int ypos, maxline, subline, linecount; |
| 678 | |
| 679 | maxline = view->height-lines; |
| 680 | line = view->startline; ypos = -view->subline; subline = 0; |
| 681 | while (line != NULL((void *)0) && ypos < maxline) { |
| 682 | linecount = view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 683 | ypos += linecount; |
| 684 | if (ypos > maxline) { |
| 685 | subline = maxline-(ypos-linecount); |
| 686 | break; |
| 687 | } |
| 688 | line = line->next; |
| 689 | } |
| 690 | |
| 691 | view_draw(view, line, subline, maxline, lines, TRUE(!(0))); |
| 692 | } |
| 693 | |
| 694 | /* Returns number of lines actually scrolled */ |
| 695 | static int view_scroll(TEXT_BUFFER_VIEW_REC *view, LINE_REC **lines, |
| 696 | int *subline, int scrollcount, int draw_nonclean) |
| 697 | { |
| 698 | int linecount, realcount, scroll_visible; |
| 699 | |
| 700 | if (*lines == NULL((void *)0)) |
| 701 | return 0; |
| 702 | |
| 703 | /* scroll down */ |
| 704 | scroll_visible = lines == &view->startline; |
| 705 | |
| 706 | realcount = -*subline; |
| 707 | scrollcount += *subline; |
| 708 | *subline = 0; |
| 709 | while (scrollcount > 0) { |
| 710 | linecount = view_get_linecount(view, *lines)textbuffer_view_get_line_cache(view, *lines)->count; |
| 711 | |
| 712 | if ((scroll_visible && *lines == view->bottom_startline) && |
| 713 | (scrollcount >= view->bottom_subline)) { |
| 714 | *subline = view->bottom_subline; |
| 715 | realcount += view->bottom_subline; |
| 716 | scrollcount = 0; |
| 717 | break; |
| 718 | } |
| 719 | |
| 720 | realcount += linecount; |
| 721 | scrollcount -= linecount; |
| 722 | if (scrollcount < 0) { |
| 723 | realcount += scrollcount; |
| 724 | *subline = linecount+scrollcount; |
| 725 | scrollcount = 0; |
| 726 | break; |
| 727 | } |
| 728 | |
| 729 | if ((*lines)->next == NULL((void *)0)) |
| 730 | break; |
| 731 | |
| 732 | *lines = (*lines)->next; |
| 733 | } |
| 734 | |
| 735 | /* scroll up */ |
| 736 | while (scrollcount < 0 && (*lines)->prev != NULL((void *)0)) { |
| 737 | *lines = (*lines)->prev; |
| 738 | linecount = view_get_linecount(view, *lines)textbuffer_view_get_line_cache(view, *lines)->count; |
| 739 | |
| 740 | realcount -= linecount; |
| 741 | scrollcount += linecount; |
| 742 | if (scrollcount > 0) { |
| 743 | realcount += scrollcount; |
| 744 | *subline = scrollcount; |
| 745 | break; |
| 746 | } |
| 747 | } |
| 748 | |
| 749 | if (scroll_visible && realcount != 0 && view->window != NULL((void *)0)) { |
| 750 | if (realcount <= -view->height || realcount >= view->height) { |
| 751 | /* scrolled more than screenful, redraw the |
| 752 | whole view */ |
| 753 | textbuffer_view_redraw(view); |
| 754 | } else { |
| 755 | term_set_color(view->window, ATTR_RESET(0x0100|0x0200)); |
| 756 | term_window_scroll(view->window, realcount); |
| 757 | |
| 758 | if (draw_nonclean) { |
| 759 | if (realcount < 0) |
| 760 | view_draw_top(view, -realcount, TRUE)view_draw(view, (view)->startline, (view)->subline, 0, - realcount, (!(0))); |
| 761 | else |
| 762 | view_draw_bottom(view, realcount); |
| 763 | } |
| 764 | |
| 765 | term_refresh(view->window); |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | return realcount >= 0 ? realcount : -realcount; |
| 770 | } |
| 771 | |
| 772 | /* Resize the view. */ |
| 773 | void textbuffer_view_resize(TEXT_BUFFER_VIEW_REC *view, int width, int height) |
| 774 | { |
| 775 | int linecount; |
| 776 | |
| 777 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 778 | g_return_if_fail(width > 0)do{ if (width > 0) { } else { g_return_if_fail_warning ("TextBufferView" , __PRETTY_FUNCTION__, "width > 0"); return; }; }while (0); |
| 779 | |
| 780 | if (view->width != width) { |
| 781 | /* line cache needs to be recreated */ |
| 782 | textbuffer_cache_unref(view->cache); |
| 783 | view->cache = textbuffer_cache_get(view->siblings, width); |
| 784 | } |
| 785 | |
| 786 | view->width = width > 10 ? width : 10; |
| 787 | view->height = height > 1 ? height : 1; |
| 788 | |
| 789 | if (view->buffer->first_line == NULL((void *)0)) { |
| 790 | view->empty_linecount = height; |
| 791 | return; |
| 792 | } |
| 793 | |
| 794 | textbuffer_view_init_bottom(view); |
| 795 | |
| 796 | /* check that we didn't scroll lower than bottom startline.. */ |
| 797 | if (textbuffer_line_exists_after(view->bottom_startline->next, |
| 798 | view->startline)) { |
| 799 | view->startline = view->bottom_startline; |
| 800 | view->subline = view->bottom_subline; |
| 801 | } else if (view->startline == view->bottom_startline && |
| 802 | view->subline > view->bottom_subline) { |
| 803 | view->subline = view->bottom_subline; |
| 804 | } else { |
| 805 | /* make sure the subline is still in allowed range */ |
| 806 | linecount = view_get_linecount(view, view->startline)textbuffer_view_get_line_cache(view, view->startline)-> count; |
| 807 | if (view->subline > linecount) |
| 808 | view->subline = linecount; |
| 809 | } |
| 810 | |
| 811 | textbuffer_view_init_ypos(view); |
| 812 | if (view->bottom && !view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height)) { |
| 813 | /* we scrolled to far up, need to get down. go right over |
| 814 | the empty lines if there's any */ |
| 815 | view->startline = view->bottom_startline; |
| 816 | view->subline = view->bottom_subline; |
| 817 | if (view->empty_linecount > 0) { |
| 818 | view_scroll(view, &view->startline, &view->subline, |
| 819 | -view->empty_linecount, FALSE(0)); |
| 820 | } |
| 821 | textbuffer_view_init_ypos(view); |
| 822 | } |
| 823 | |
| 824 | view->bottom = view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height); |
| 825 | if (view->bottom) { |
| 826 | /* check if we left empty space at the bottom.. */ |
| 827 | linecount = view_get_linecount_all(view, view->startline) - |
| 828 | view->subline; |
| 829 | if (view->empty_linecount < view->height-linecount) |
| 830 | view->empty_linecount = view->height-linecount; |
| 831 | view->more_text = FALSE(0); |
| 832 | } |
| 833 | |
| 834 | view->dirty = TRUE(!(0)); |
| 835 | } |
| 836 | |
| 837 | /* Clear the view, don't actually remove any lines from buffer. */ |
| 838 | void textbuffer_view_clear(TEXT_BUFFER_VIEW_REC *view) |
| 839 | { |
| 840 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 841 | |
| 842 | view->ypos = -1; |
| 843 | view->bottom_startline = view->startline = |
| 844 | textbuffer_line_last(view->buffer); |
| 845 | view->bottom_subline = view->subline = |
| 846 | view->buffer->cur_line == NULL((void *)0) ? 0 : |
| 847 | view_get_linecount(view, view->buffer->cur_line)textbuffer_view_get_line_cache(view, view->buffer->cur_line )->count; |
| 848 | view->empty_linecount = view->height; |
| 849 | view->bottom = TRUE(!(0)); |
| 850 | view->more_text = FALSE(0); |
| 851 | |
| 852 | textbuffer_view_redraw(view); |
| 853 | } |
| 854 | |
| 855 | /* Scroll the view up/down */ |
| 856 | void textbuffer_view_scroll(TEXT_BUFFER_VIEW_REC *view, int lines) |
| 857 | { |
| 858 | int count; |
| 859 | |
| 860 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 861 | |
| 862 | count = view_scroll(view, &view->startline, &view->subline, |
| 863 | lines, TRUE(!(0))); |
| 864 | view->ypos += lines < 0 ? count : -count; |
| 865 | view->bottom = view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height); |
| 866 | if (view->bottom) view->more_text = FALSE(0); |
| 867 | |
| 868 | if (view->window != NULL((void *)0)) |
| 869 | term_refresh(view->window); |
| 870 | } |
| 871 | |
| 872 | /* Scroll to specified line */ |
| 873 | void textbuffer_view_scroll_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 874 | { |
| 875 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 876 | |
| 877 | if (textbuffer_line_exists_after(view->bottom_startline->next, line)) { |
| 878 | view->startline = view->bottom_startline; |
| 879 | view->subline = view->bottom_subline; |
| 880 | } else { |
| 881 | view->startline = line; |
| 882 | view->subline = 0; |
| 883 | } |
| 884 | |
| 885 | textbuffer_view_init_ypos(view); |
| 886 | view->bottom = view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height); |
| 887 | if (view->bottom) view->more_text = FALSE(0); |
| 888 | |
| 889 | textbuffer_view_redraw(view); |
| 890 | } |
| 891 | |
| 892 | /* Return line cache */ |
| 893 | LINE_CACHE_REC *textbuffer_view_get_line_cache(TEXT_BUFFER_VIEW_REC *view, |
| 894 | LINE_REC *line) |
| 895 | { |
| 896 | LINE_CACHE_REC *cache; |
| 897 | |
| 898 | g_assert(view != NULL)do { if (view != ((void *)0)) ; else g_assertion_message_expr ("TextBufferView", "textbuffer-view.c", 898, ((const char*) ( __PRETTY_FUNCTION__)), "view != NULL"); } while (0); |
| 899 | g_assert(line != NULL)do { if (line != ((void *)0)) ; else g_assertion_message_expr ("TextBufferView", "textbuffer-view.c", 899, ((const char*) ( __PRETTY_FUNCTION__)), "line != NULL"); } while (0); |
| 900 | |
| 901 | cache = g_hash_table_lookup(view->cache->line_cache, line); |
| 902 | if (cache == NULL((void *)0)) |
| 903 | cache = view_update_line_cache(view, line); |
| 904 | else |
| 905 | cache->last_access = time(NULL((void *)0)); |
| 906 | |
| 907 | return cache; |
| 908 | } |
| 909 | |
| 910 | static void view_insert_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 911 | { |
| 912 | int linecount, ypos, subline; |
| 913 | |
| 914 | if (!view->bottom) |
| 915 | view->more_text = TRUE(!(0)); |
| 916 | |
| 917 | if (view->bottom_startline == NULL((void *)0)) { |
| 918 | view->startline = view->bottom_startline = |
| 919 | view->buffer->first_line; |
| 920 | } |
| 921 | |
| 922 | if (view->buffer->cur_line != line && |
| 923 | !textbuffer_line_exists_after(view->bottom_startline, line)) |
| 924 | return; |
| 925 | |
| 926 | linecount = view->cache->last_linecount; |
| 927 | view->ypos += linecount; |
| 928 | if (view->empty_linecount > 0) { |
| 929 | view->empty_linecount -= linecount; |
| 930 | if (view->empty_linecount >= 0) |
| 931 | linecount = 0; |
| 932 | else { |
| 933 | linecount = -view->empty_linecount; |
| 934 | view->empty_linecount = 0; |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | if (linecount > 0) { |
| 939 | view_scroll(view, &view->bottom_startline, |
| 940 | &view->bottom_subline, linecount, FALSE(0)); |
| 941 | } |
| 942 | |
| 943 | if (view->bottom) { |
| 944 | if (view->scroll && view->ypos >= view->height) { |
| 945 | linecount = view->ypos-view->height+1; |
| 946 | view_scroll(view, &view->startline, |
| 947 | &view->subline, linecount, FALSE(0)); |
| 948 | view->ypos -= linecount; |
| 949 | } else { |
| 950 | view->bottom = view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height); |
| 951 | } |
| 952 | |
| 953 | if (view->window != NULL((void *)0)) { |
| 954 | ypos = view->ypos+1 - view->cache->last_linecount; |
| 955 | if (ypos >= 0) |
| 956 | subline = 0; |
| 957 | else { |
| 958 | subline = -ypos; |
| 959 | ypos = 0; |
| 960 | } |
| 961 | if (ypos < view->height) { |
| 962 | view_line_draw(view, line, subline, ypos, |
| 963 | view->height - ypos); |
| 964 | } |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | if (view->window != NULL((void *)0)) |
| 969 | term_refresh(view->window); |
| 970 | } |
| 971 | |
| 972 | /* Update some line in the buffer which has been modified using |
| 973 | textbuffer_append() or textbuffer_insert(). */ |
| 974 | void textbuffer_view_insert_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 975 | { |
| 976 | GSList *tmp; |
| 977 | unsigned char update_counter; |
| 978 | |
| 979 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 980 | g_return_if_fail(line != NULL)do{ if (line != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "line != NULL"); return ; }; }while (0); |
| 981 | |
| 982 | if (!view->buffer->last_eol) |
| 983 | return; |
| 984 | |
| 985 | update_counter = view->cache->update_counter+1; |
| 986 | view_update_cache(view, line, update_counter); |
| 987 | view_insert_line(view, line); |
| 988 | |
| 989 | for (tmp = view->siblings; tmp != NULL((void *)0); tmp = tmp->next) { |
| 990 | TEXT_BUFFER_VIEW_REC *rec = tmp->data; |
| 991 | |
| 992 | view_update_cache(rec, line, update_counter); |
| 993 | view_insert_line(rec, line); |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | typedef struct { |
| 998 | LINE_REC *remove_line; |
| 999 | GSList *remove_list; |
| 1000 | } BOOKMARK_FIND_REC; |
| 1001 | |
| 1002 | static void bookmark_check_remove(char *key, LINE_REC *line, |
| 1003 | BOOKMARK_FIND_REC *rec) |
| 1004 | { |
| 1005 | if (line == rec->remove_line) |
| 1006 | rec->remove_list = g_slist_append(rec->remove_list, key); |
| 1007 | } |
| 1008 | |
| 1009 | static void view_bookmarks_check(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 1010 | { |
| 1011 | BOOKMARK_FIND_REC rec; |
| 1012 | GSList *tmp; |
| 1013 | |
| 1014 | rec.remove_line = line; |
| 1015 | rec.remove_list = NULL((void *)0); |
| 1016 | g_hash_table_foreach(view->bookmarks, |
| 1017 | (GHFunc) bookmark_check_remove, &rec); |
| 1018 | |
| 1019 | if (rec.remove_list != NULL((void *)0)) { |
| 1020 | for (tmp = rec.remove_list; tmp != NULL((void *)0); tmp = tmp->next) { |
| 1021 | g_hash_table_remove(view->bookmarks, tmp->data); |
| 1022 | g_free(tmp->data); |
| 1023 | } |
| 1024 | g_slist_free(rec.remove_list); |
| 1025 | } |
| 1026 | } |
| 1027 | |
| 1028 | /* Return number of real lines `lines' list takes - |
| 1029 | stops counting when the height reaches the view height */ |
| 1030 | static int view_get_lines_height(TEXT_BUFFER_VIEW_REC *view, |
| 1031 | LINE_REC *line, int subline, |
| 1032 | LINE_REC *skip_line) |
| 1033 | { |
| 1034 | int height, linecount; |
| 1035 | |
| 1036 | height = -subline; |
| 1037 | while (line != NULL((void *)0) && height < view->height) { |
| 1038 | if (line != skip_line) { |
| 1039 | linecount = view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 1040 | height += linecount; |
| 1041 | } |
| 1042 | line = line->next; |
| 1043 | } |
| 1044 | |
| 1045 | return height < view->height ? height : view->height; |
| 1046 | } |
| 1047 | |
| 1048 | static void view_remove_line_update_startline(TEXT_BUFFER_VIEW_REC *view, |
| 1049 | LINE_REC *line, int linecount) |
| 1050 | { |
| 1051 | int scroll; |
| 1052 | |
| 1053 | if (view->startline == line) { |
| 1054 | view->startline = view->startline->prev != NULL((void *)0) ? |
| 1055 | view->startline->prev : view->startline->next; |
| 1056 | view->subline = 0; |
| 1057 | } else { |
| 1058 | scroll = view->height - |
| 1059 | view_get_lines_height(view, view->startline, |
| 1060 | view->subline, line); |
| 1061 | if (scroll > 0) { |
| 1062 | view_scroll(view, &view->startline, |
| 1063 | &view->subline, -scroll, FALSE(0)); |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | /* FIXME: this is slow and unnecessary, but it's easy and |
| 1068 | really works :) */ |
| 1069 | textbuffer_view_init_ypos(view); |
| 1070 | if (textbuffer_line_exists_after(view->startline, line)) |
| 1071 | view->ypos -= linecount; |
| 1072 | } |
| 1073 | |
| 1074 | static void view_remove_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line, |
| 1075 | int linecount) |
| 1076 | { |
| 1077 | int realcount; |
| 1078 | |
| 1079 | view_bookmarks_check(view, line); |
| 1080 | |
| 1081 | if (view->buffer->cur_line == line) { |
| 1082 | /* the last line is being removed */ |
| 1083 | LINE_REC *prevline; |
| 1084 | |
| 1085 | prevline = view->buffer->first_line == line ? NULL((void *)0) : |
| 1086 | textbuffer_line_last(view->buffer); |
| 1087 | view->cache->last_linecount = prevline == NULL((void *)0) ? 0 : |
| 1088 | view_get_linecount(view, prevline)textbuffer_view_get_line_cache(view, prevline)->count; |
| 1089 | } |
| 1090 | |
| 1091 | if (view->buffer->first_line == line) { |
| 1092 | /* first line in the buffer - this is the most commonly |
| 1093 | removed line.. */ |
| 1094 | if (view->bottom_startline == line) { |
| 1095 | /* very small scrollback.. */ |
| 1096 | view->bottom_startline = view->bottom_startline->next; |
| 1097 | view->bottom_subline = 0; |
| 1098 | } |
| 1099 | |
| 1100 | if (view->startline == line) { |
| 1101 | /* removing the first line in screen */ |
| 1102 | int is_last = view->startline->next == NULL((void *)0); |
| 1103 | |
| 1104 | realcount = view_scroll(view, &view->startline, |
| 1105 | &view->subline, |
| 1106 | linecount, FALSE(0)); |
| 1107 | view->ypos -= realcount; |
| 1108 | view->empty_linecount += linecount-realcount; |
| 1109 | if (is_last == 1) |
| 1110 | view->startline = NULL((void *)0); |
| 1111 | } |
| 1112 | } else { |
| 1113 | if (textbuffer_line_exists_after(view->bottom_startline, |
| 1114 | line)) { |
| 1115 | realcount = view_scroll(view, &view->bottom_startline, |
| 1116 | &view->bottom_subline, |
| 1117 | -linecount, FALSE(0)); |
| 1118 | view->empty_linecount += linecount-realcount; |
| 1119 | } |
| 1120 | |
| 1121 | if (textbuffer_line_exists_after(view->startline, |
| 1122 | line)) { |
| 1123 | view_remove_line_update_startline(view, line, |
| 1124 | linecount); |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | view->bottom = view_is_bottom(view)((view)->ypos >= -1 && (view)->ypos < (view )->height); |
| 1129 | if (view->bottom) view->more_text = FALSE(0); |
| 1130 | if (view->window != NULL((void *)0)) |
| 1131 | term_refresh(view->window); |
| 1132 | } |
| 1133 | |
| 1134 | /* Remove one line from buffer. */ |
| 1135 | void textbuffer_view_remove_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line) |
| 1136 | { |
| 1137 | GSList *tmp; |
| 1138 | unsigned char update_counter; |
| 1139 | int linecount; |
| 1140 | |
| 1141 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 1142 | g_return_if_fail(line != NULL)do{ if (line != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "line != NULL"); return ; }; }while (0); |
| 1143 | |
| 1144 | linecount = view_get_linecount(view, line)textbuffer_view_get_line_cache(view, line)->count; |
| 1145 | update_counter = view->cache->update_counter+1; |
| 1146 | |
| 1147 | view_remove_line(view, line, linecount); |
| 1148 | view_remove_cache(view, line, update_counter); |
| 1149 | |
| 1150 | for (tmp = view->siblings; tmp != NULL((void *)0); tmp = tmp->next) { |
| 1151 | TEXT_BUFFER_VIEW_REC *rec = tmp->data; |
| 1152 | |
| 1153 | view_remove_line(rec, line, linecount); |
| 1154 | view_remove_cache(rec, line, update_counter); |
| 1155 | } |
| 1156 | |
| 1157 | textbuffer_remove(view->buffer, line); |
| 1158 | } |
| 1159 | |
| 1160 | void textbuffer_view_remove_lines_by_level(TEXT_BUFFER_VIEW_REC *view, int level) |
| 1161 | { |
| 1162 | LINE_REC *line, *next; |
| 1163 | |
| 1164 | term_refresh_freeze(); |
| 1165 | line = textbuffer_view_get_lines(view)((view)->buffer->first_line); |
| 1166 | |
| 1167 | while (line != NULL((void *)0)) { |
| 1168 | next = line->next; |
| 1169 | |
| 1170 | if (line->info.level & level) |
| 1171 | textbuffer_view_remove_line(view, line); |
| 1172 | line = next; |
| 1173 | } |
| 1174 | textbuffer_view_redraw(view); |
| 1175 | term_refresh_thaw(); |
| 1176 | } |
| 1177 | |
| 1178 | static int g_free_true(void *data) |
| 1179 | { |
| 1180 | g_free(data); |
| 1181 | return TRUE(!(0)); |
| 1182 | } |
| 1183 | |
| 1184 | /* Remove all lines from buffer. */ |
| 1185 | void textbuffer_view_remove_all_lines(TEXT_BUFFER_VIEW_REC *view) |
| 1186 | { |
| 1187 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 1188 | |
| 1189 | textbuffer_remove_all_lines(view->buffer); |
| 1190 | |
| 1191 | g_hash_table_foreach_remove(view->bookmarks, |
| 1192 | (GHRFunc) g_free_true, NULL((void *)0)); |
| 1193 | |
| 1194 | view_reset_cache(view); |
| 1195 | textbuffer_view_clear(view); |
| 1196 | g_slist_foreach(view->siblings, (GFunc) textbuffer_view_clear, NULL((void *)0)); |
| 1197 | } |
| 1198 | |
| 1199 | /* Set a bookmark in view */ |
| 1200 | void textbuffer_view_set_bookmark(TEXT_BUFFER_VIEW_REC *view, |
| 1201 | const char *name, LINE_REC *line) |
| 1202 | { |
| 1203 | gpointer key, value; |
| 1204 | |
| 1205 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 1206 | g_return_if_fail(name != NULL)do{ if (name != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "name != NULL"); return ; }; }while (0); |
| 1207 | |
| 1208 | if (g_hash_table_lookup_extended(view->bookmarks, name, |
| 1209 | &key, &value)) { |
| 1210 | g_hash_table_remove(view->bookmarks, key); |
| 1211 | g_free(key); |
| 1212 | } |
| 1213 | |
| 1214 | g_hash_table_insert(view->bookmarks, g_strdup(name), line); |
| 1215 | } |
| 1216 | |
| 1217 | /* Set a bookmark in view to the bottom line */ |
| 1218 | void textbuffer_view_set_bookmark_bottom(TEXT_BUFFER_VIEW_REC *view, |
| 1219 | const char *name) |
| 1220 | { |
| 1221 | LINE_REC *line; |
| 1222 | |
| 1223 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 1224 | g_return_if_fail(name != NULL)do{ if (name != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "name != NULL"); return ; }; }while (0); |
| 1225 | |
| 1226 | if (view->bottom_startline != NULL((void *)0)) { |
| 1227 | line = textbuffer_line_last(view->buffer); |
| 1228 | textbuffer_view_set_bookmark(view, name, line); |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | /* Return the line for bookmark */ |
| 1233 | LINE_REC *textbuffer_view_get_bookmark(TEXT_BUFFER_VIEW_REC *view, |
| 1234 | const char *name) |
| 1235 | { |
| 1236 | g_return_val_if_fail(view != NULL, NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return (((void *)0)); }; }while (0); |
| 1237 | g_return_val_if_fail(name != NULL, NULL)do{ if (name != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "name != NULL"); return (((void *)0)); }; }while (0); |
| 1238 | |
| 1239 | return g_hash_table_lookup(view->bookmarks, name); |
| 1240 | } |
| 1241 | |
| 1242 | /* Specify window where the changes in view should be drawn, |
| 1243 | NULL disables it. */ |
| 1244 | void textbuffer_view_set_window(TEXT_BUFFER_VIEW_REC *view, |
| 1245 | TERM_WINDOW *window) |
| 1246 | { |
| 1247 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 1248 | |
| 1249 | if (view->window != window) { |
| 1250 | view->window = window; |
| 1251 | if (window != NULL((void *)0)) |
| 1252 | view->dirty = TRUE(!(0)); |
| 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | /* Redraw a view to window */ |
| 1257 | void textbuffer_view_redraw(TEXT_BUFFER_VIEW_REC *view) |
| 1258 | { |
| 1259 | g_return_if_fail(view != NULL)do{ if (view != ((void *)0)) { } else { g_return_if_fail_warning ("TextBufferView", __PRETTY_FUNCTION__, "view != NULL"); return ; }; }while (0); |
| 1260 | |
| 1261 | if (view->window != NULL((void *)0)) { |
| 1262 | view->dirty = FALSE(0); |
| 1263 | view_draw_top(view, view->height, TRUE)view_draw(view, (view)->startline, (view)->subline, 0, view ->height, (!(0))); |
| 1264 | term_refresh(view->window); |
| 1265 | } |
| 1266 | } |
| 1267 | |
| 1268 | static int line_cache_check_remove(void *key, LINE_CACHE_REC *cache, |
| 1269 | time_t *now) |
| 1270 | { |
| 1271 | if (cache->last_access+LINE_CACHE_KEEP_TIME(10*60) > *now) |
| 1272 | return FALSE(0); |
| 1273 | |
| 1274 | line_cache_destroy(NULL((void *)0), cache); |
| 1275 | return TRUE(!(0)); |
| 1276 | } |
| 1277 | |
| 1278 | static int sig_check_linecache(void) |
| 1279 | { |
| 1280 | GSList *tmp, *caches; |
| 1281 | time_t now; |
| 1282 | |
| 1283 | now = time(NULL((void *)0)); caches = NULL((void *)0); |
| 1284 | for (tmp = views; tmp != NULL((void *)0); tmp = tmp->next) { |
| 1285 | TEXT_BUFFER_VIEW_REC *rec = tmp->data; |
| 1286 | |
| 1287 | if (g_slist_find(caches, rec->cache) != NULL((void *)0)) |
| 1288 | continue; |
| 1289 | |
| 1290 | caches = g_slist_append(caches, rec->cache); |
| 1291 | g_hash_table_foreach_remove(rec->cache->line_cache, |
| 1292 | (GHRFunc) line_cache_check_remove, |
| 1293 | &now); |
| 1294 | } |
| 1295 | |
| 1296 | g_slist_free(caches); |
| 1297 | return 1; |
| 1298 | } |
| 1299 | |
| 1300 | void textbuffer_view_init(void) |
| 1301 | { |
| 1302 | linecache_tag = g_timeout_add(LINE_CACHE_CHECK_TIME(5*60*1000), (GSourceFunc) sig_check_linecache, NULL((void *)0)); |
| 1303 | } |
| 1304 | |
| 1305 | void textbuffer_view_deinit(void) |
| 1306 | { |
| 1307 | g_source_remove(linecache_tag); |
| 1308 | } |