1/* -*- mode: C; c-file-style: "gnu" -*- */
2/* xdgmime.c: XDG Mime Spec mime resolver. Based on version 0.11 of the spec.
3 *
4 * More info can be found at http://www.freedesktop.org/standards/
5 *
6 * Copyright (C) 2003,2004 Red Hat, Inc.
7 * Copyright (C) 2003,2004 Jonathan Blandford <jrb@alum.mit.edu>
8 *
9 * Licensed under the Academic Free License version 2.0
10 * Or under the following terms:
11 *
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the
24 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 * Boston, MA 02111-1307, USA.
26 */
27
28#ifdef HAVE_CONFIG_H
29#include "cmakeconfig.h"
30#endif
31
32#include "xdgmime.h"
33#include "xdgmimeint.h"
34#include "xdgmimeglob.h"
35#include "xdgmimemagic.h"
36#include "xdgmimealias.h"
37#include "xdgmimeicon.h"
38#include "xdgmimeparent.h"
39#include "xdgmimecache.h"
40#include <stdio.h>
41#include <string.h>
42#include <sys/stat.h>
43#include <sys/types.h>
44#include <sys/time.h>
45#include <unistd.h>
46#include <assert.h>
47
48typedef struct XdgDirTimeList XdgDirTimeList;
49typedef struct XdgCallbackList XdgCallbackList;
50
51static int need_reread = TRUE;
52static time_t last_stat_time = 0;
53
54static XdgGlobHash *global_hash = NULL;
55static XdgMimeMagic *global_magic = NULL;
56static XdgAliasList *alias_list = NULL;
57static XdgParentList *parent_list = NULL;
58static XdgDirTimeList *dir_time_list = NULL;
59static XdgCallbackList *callback_list = NULL;
60static XdgIconList *icon_list = NULL;
61static XdgIconList *generic_icon_list = NULL;
62
63XdgMimeCache **_caches = NULL;
64static int n_caches = 0;
65
66const char xdg_mime_type_unknown[] = "application/octet-stream";
67const char xdg_mime_type_empty[] = "application/x-zerosize";
68const char xdg_mime_type_textplain[] = "text/plain";
69
70
71enum
72{
73 XDG_CHECKED_UNCHECKED,
74 XDG_CHECKED_VALID,
75 XDG_CHECKED_INVALID
76};
77
78struct XdgDirTimeList
79{
80 time_t mtime;
81 char *directory_name;
82 int checked;
83 XdgDirTimeList *next;
84};
85
86struct XdgCallbackList
87{
88 XdgCallbackList *next;
89 XdgCallbackList *prev;
90 int callback_id;
91 XdgMimeCallback callback;
92 void *data;
93 XdgMimeDestroy destroy;
94};
95
96/* Function called by xdg_run_command_on_dirs. If it returns TRUE, further
97 * directories aren't looked at */
98typedef int (*XdgDirectoryFunc) (const char *directory,
99 void *user_data);
100
101static void
102xdg_dir_time_list_add (char *file_name,
103 time_t mtime)
104{
105 XdgDirTimeList *list;
106
107 for (list = dir_time_list; list; list = list->next)
108 {
109 if (strcmp (list->directory_name, file_name) == 0)
110 {
111 free (file_name);
112 return;
113 }
114 }
115
116 list = calloc (1, sizeof (XdgDirTimeList));
117 list->checked = XDG_CHECKED_UNCHECKED;
118 list->directory_name = file_name;
119 list->mtime = mtime;
120 list->next = dir_time_list;
121 dir_time_list = list;
122}
123
124static void
125xdg_dir_time_list_free (XdgDirTimeList *list)
126{
127 XdgDirTimeList *next;
128
129 while (list)
130 {
131 next = list->next;
132 free (list->directory_name);
133 free (list);
134 list = next;
135 }
136}
137
138static int
139xdg_mime_init_from_directory (const char *directory)
140{
141 char *file_name;
142 struct stat st;
143
144 assert (directory != NULL);
145
146 file_name = malloc (strlen (directory) + strlen ("/mime/mime.cache") + 1);
147 strcpy (file_name, directory); strcat (file_name, "/mime/mime.cache");
148 if (stat (file_name, &st) == 0)
149 {
150 XdgMimeCache *cache = _xdg_mime_cache_new_from_file (file_name);
151
152 if (cache != NULL)
153 {
154 xdg_dir_time_list_add (file_name, st.st_mtime);
155
156 _caches = realloc (_caches, sizeof (XdgMimeCache *) * (n_caches + 2));
157 _caches[n_caches] = cache;
158 _caches[n_caches + 1] = NULL;
159 n_caches++;
160
161 return FALSE;
162 }
163 }
164 free (file_name);
165
166 file_name = malloc (strlen (directory) + strlen ("/mime/globs2") + 1);
167 strcpy (file_name, directory); strcat (file_name, "/mime/globs2");
168 if (stat (file_name, &st) == 0)
169 {
170 _xdg_mime_glob_read_from_file (global_hash, file_name, TRUE);
171 xdg_dir_time_list_add (file_name, st.st_mtime);
172 }
173 else
174 {
175 free (file_name);
176 file_name = malloc (strlen (directory) + strlen ("/mime/globs") + 1);
177 strcpy (file_name, directory); strcat (file_name, "/mime/globs");
178 if (stat (file_name, &st) == 0)
179 {
180 _xdg_mime_glob_read_from_file (global_hash, file_name, FALSE);
181 xdg_dir_time_list_add (file_name, st.st_mtime);
182 }
183 else
184 {
185 free (file_name);
186 }
187 }
188
189 file_name = malloc (strlen (directory) + strlen ("/mime/magic") + 1);
190 strcpy (file_name, directory); strcat (file_name, "/mime/magic");
191 if (stat (file_name, &st) == 0)
192 {
193 _xdg_mime_magic_read_from_file (global_magic, file_name);
194 xdg_dir_time_list_add (file_name, st.st_mtime);
195 }
196 else
197 {
198 free (file_name);
199 }
200
201 file_name = malloc (strlen (directory) + strlen ("/mime/aliases") + 1);
202 strcpy (file_name, directory); strcat (file_name, "/mime/aliases");
203 _xdg_mime_alias_read_from_file (alias_list, file_name);
204 free (file_name);
205
206 file_name = malloc (strlen (directory) + strlen ("/mime/subclasses") + 1);
207 strcpy (file_name, directory); strcat (file_name, "/mime/subclasses");
208 _xdg_mime_parent_read_from_file (parent_list, file_name);
209 free (file_name);
210
211 file_name = malloc (strlen (directory) + strlen ("/mime/icons") + 1);
212 strcpy (file_name, directory); strcat (file_name, "/mime/icons");
213 _xdg_mime_icon_read_from_file (icon_list, file_name);
214 free (file_name);
215
216 file_name = malloc (strlen (directory) + strlen ("/mime/generic-icons") + 1);
217 strcpy (file_name, directory); strcat (file_name, "/mime/generic-icons");
218 _xdg_mime_icon_read_from_file (generic_icon_list, file_name);
219 free (file_name);
220
221 return FALSE; /* Keep processing */
222}
223
224/* Runs a command on all the directories in the search path */
225static void
226xdg_run_command_on_dirs (XdgDirectoryFunc func,
227 void *user_data)
228{
229 const char *xdg_data_home;
230 const char *xdg_data_dirs;
231 const char *ptr;
232
233 xdg_data_home = getenv ("XDG_DATA_HOME");
234 if (xdg_data_home)
235 {
236 if ((func) (xdg_data_home, user_data))
237 return;
238 }
239 else
240 {
241 const char *home;
242
243 home = getenv ("HOME");
244 if (home != NULL)
245 {
246 char *guessed_xdg_home;
247 int stop_processing;
248
249 guessed_xdg_home = malloc (strlen (home) + strlen ("/.local/share/") + 1);
250 strcpy (guessed_xdg_home, home);
251 strcat (guessed_xdg_home, "/.local/share/");
252 stop_processing = (func) (guessed_xdg_home, user_data);
253 free (guessed_xdg_home);
254
255 if (stop_processing)
256 return;
257 }
258 }
259
260 xdg_data_dirs = getenv ("XDG_DATA_DIRS");
261 if (xdg_data_dirs == NULL)
262 xdg_data_dirs = "/usr/local/share/:/usr/share/";
263
264 ptr = xdg_data_dirs;
265
266 while (*ptr != '\000')
267 {
268 const char *end_ptr;
269 char *dir;
270 int len;
271 int stop_processing;
272
273 end_ptr = ptr;
274 while (*end_ptr != ':' && *end_ptr != '\000')
275 end_ptr ++;
276
277 if (end_ptr == ptr)
278 {
279 ptr++;
280 continue;
281 }
282
283 if (*end_ptr == ':')
284 len = end_ptr - ptr;
285 else
286 len = end_ptr - ptr + 1;
287 dir = malloc (len + 1);
288 strncpy (dir, ptr, len);
289 dir[len] = '\0';
290 stop_processing = (func) (dir, user_data);
291 free (dir);
292
293 if (stop_processing)
294 return;
295
296 ptr = end_ptr;
297 }
298}
299
300/* Checks file_path to make sure it has the same mtime as last time it was
301 * checked. If it has a different mtime, or if the file doesn't exist, it
302 * returns FALSE.
303 *
304 * FIXME: This doesn't protect against permission changes.
305 */
306static int
307xdg_check_file (const char *file_path,
308 int *exists)
309{
310 struct stat st;
311
312 /* If the file exists */
313 if (stat (file_path, &st) == 0)
314 {
315 XdgDirTimeList *list;
316
317 if (exists)
318 *exists = TRUE;
319
320 for (list = dir_time_list; list; list = list->next)
321 {
322 if (! strcmp (list->directory_name, file_path))
323 {
324 if (st.st_mtime == list->mtime)
325 list->checked = XDG_CHECKED_VALID;
326 else
327 list->checked = XDG_CHECKED_INVALID;
328
329 return (list->checked != XDG_CHECKED_VALID);
330 }
331 }
332 return TRUE;
333 }
334
335 if (exists)
336 *exists = FALSE;
337
338 return FALSE;
339}
340
341static int
342xdg_check_dir (const char *directory,
343 int *invalid_dir_list)
344{
345 int invalid, exists;
346 char *file_name;
347
348 assert (directory != NULL);
349
350 /* Check the mime.cache file */
351 file_name = malloc (strlen (directory) + strlen ("/mime/mime.cache") + 1);
352 strcpy (file_name, directory); strcat (file_name, "/mime/mime.cache");
353 invalid = xdg_check_file (file_name, &exists);
354 free (file_name);
355 if (invalid)
356 {
357 *invalid_dir_list = TRUE;
358 return TRUE;
359 }
360 else if (exists)
361 {
362 return FALSE;
363 }
364
365 /* Check the globs file */
366 file_name = malloc (strlen (directory) + strlen ("/mime/globs") + 1);
367 strcpy (file_name, directory); strcat (file_name, "/mime/globs");
368 invalid = xdg_check_file (file_name, NULL);
369 free (file_name);
370 if (invalid)
371 {
372 *invalid_dir_list = TRUE;
373 return TRUE;
374 }
375
376 /* Check the magic file */
377 file_name = malloc (strlen (directory) + strlen ("/mime/magic") + 1);
378 strcpy (file_name, directory); strcat (file_name, "/mime/magic");
379 invalid = xdg_check_file (file_name, NULL);
380 free (file_name);
381 if (invalid)
382 {
383 *invalid_dir_list = TRUE;
384 return TRUE;
385 }
386
387 return FALSE; /* Keep processing */
388}
389
390/* Walks through all the mime files stat()ing them to see if they've changed.
391 * Returns TRUE if they have. */
392static int
393xdg_check_dirs (void)
394{
395 XdgDirTimeList *list;
396 int invalid_dir_list = FALSE;
397
398 for (list = dir_time_list; list; list = list->next)
399 list->checked = XDG_CHECKED_UNCHECKED;
400
401 xdg_run_command_on_dirs ((XdgDirectoryFunc) xdg_check_dir,
402 &invalid_dir_list);
403
404 if (invalid_dir_list)
405 return TRUE;
406
407 for (list = dir_time_list; list; list = list->next)
408 {
409 if (list->checked != XDG_CHECKED_VALID)
410 return TRUE;
411 }
412
413 return FALSE;
414}
415
416/* We want to avoid stat()ing on every single mime call, so we only look for
417 * newer files every 5 seconds. This will return TRUE if we need to reread the
418 * mime data from disk.
419 */
420static int
421xdg_check_time_and_dirs (void)
422{
423 struct timeval tv;
424 time_t current_time;
425 int retval = FALSE;
426
427 gettimeofday (&tv, NULL);
428 current_time = tv.tv_sec;
429
430 if (current_time >= last_stat_time + 5)
431 {
432 retval = xdg_check_dirs ();
433 last_stat_time = current_time;
434 }
435
436 return retval;
437}
438
439/* Called in every public function. It reloads the hash function if need be.
440 */
441static void
442xdg_mime_init (void)
443{
444 if (xdg_check_time_and_dirs ())
445 {
446 xdg_mime_shutdown ();
447 }
448
449 if (need_reread)
450 {
451 global_hash = _xdg_glob_hash_new ();
452 global_magic = _xdg_mime_magic_new ();
453 alias_list = _xdg_mime_alias_list_new ();
454 parent_list = _xdg_mime_parent_list_new ();
455 icon_list = _xdg_mime_icon_list_new ();
456 generic_icon_list = _xdg_mime_icon_list_new ();
457
458 xdg_run_command_on_dirs ((XdgDirectoryFunc) xdg_mime_init_from_directory,
459 NULL);
460
461 need_reread = FALSE;
462 }
463}
464
465const char *
466xdg_mime_get_mime_type_for_data (const void *data,
467 size_t len,
468 int *result_prio)
469{
470 const char *mime_type;
471
472 if (len == 0)
473 {
474 *result_prio = 100;
475 return XDG_MIME_TYPE_EMPTY;
476 }
477
478 xdg_mime_init ();
479
480 if (_caches)
481 mime_type = _xdg_mime_cache_get_mime_type_for_data (data, len, result_prio);
482 else
483 mime_type = _xdg_mime_magic_lookup_data (global_magic, data, len, result_prio, NULL, 0);
484
485 if (mime_type)
486 return mime_type;
487
488 return _xdg_binary_or_text_fallback(data, len);
489}
490
491const char *
492xdg_mime_get_mime_type_for_file (const char *file_name,
493 struct stat *statbuf)
494{
495 const char *mime_type;
496 /* currently, only a few globs occur twice, and none
497 * more often, so 5 seems plenty.
498 */
499 const char *mime_types[5];
500 FILE *file;
501 unsigned char *data;
502 int max_extent;
503 int bytes_read;
504 struct stat buf;
505 const char *base_name;
506 int n;
507
508 if (file_name == NULL)
509 return NULL;
510 if (! _xdg_utf8_validate (file_name))
511 return NULL;
512
513 xdg_mime_init ();
514
515 if (_caches)
516 return _xdg_mime_cache_get_mime_type_for_file (file_name, statbuf);
517
518 base_name = _xdg_get_base_name (file_name);
519 n = _xdg_glob_hash_lookup_file_name (global_hash, base_name, mime_types, 5);
520
521 if (n == 1)
522 return mime_types[0];
523
524 if (!statbuf)
525 {
526 if (stat (file_name, &buf) != 0)
527 return XDG_MIME_TYPE_UNKNOWN;
528
529 statbuf = &buf;
530 }
531
532 if (!S_ISREG (statbuf->st_mode))
533 return XDG_MIME_TYPE_UNKNOWN;
534
535 /* FIXME: Need to make sure that max_extent isn't totally broken. This could
536 * be large and need getting from a stream instead of just reading it all
537 * in. */
538 max_extent = _xdg_mime_magic_get_buffer_extents (global_magic);
539 data = malloc (max_extent);
540 if (data == NULL)
541 return XDG_MIME_TYPE_UNKNOWN;
542
543 file = fopen (file_name, "r");
544 if (file == NULL)
545 {
546 free (data);
547 return XDG_MIME_TYPE_UNKNOWN;
548 }
549
550 bytes_read = fread (data, 1, max_extent, file);
551 if (ferror (file))
552 {
553 free (data);
554 fclose (file);
555 return XDG_MIME_TYPE_UNKNOWN;
556 }
557
558 mime_type = _xdg_mime_magic_lookup_data (global_magic, data, bytes_read, NULL,
559 mime_types, n);
560
561 if (!mime_type)
562 mime_type = _xdg_binary_or_text_fallback (data, bytes_read);
563
564 free (data);
565 fclose (file);
566
567 return mime_type;
568}
569
570const char *
571xdg_mime_get_mime_type_from_file_name (const char *file_name)
572{
573 const char *mime_type;
574
575 xdg_mime_init ();
576
577 if (_caches)
578 return _xdg_mime_cache_get_mime_type_from_file_name (file_name);
579
580 if (_xdg_glob_hash_lookup_file_name (global_hash, file_name, &mime_type, 1))
581 return mime_type;
582 else
583 return XDG_MIME_TYPE_UNKNOWN;
584}
585
586int
587xdg_mime_get_mime_types_from_file_name (const char *file_name,
588 const char *mime_types[],
589 int n_mime_types)
590{
591 xdg_mime_init ();
592
593 if (_caches)
594 return _xdg_mime_cache_get_mime_types_from_file_name (file_name, mime_types, n_mime_types);
595
596 return _xdg_glob_hash_lookup_file_name (global_hash, file_name, mime_types, n_mime_types);
597}
598
599int
600xdg_mime_is_valid_mime_type (const char *mime_type)
601{
602 /* FIXME: We should make this a better test
603 */
604 return _xdg_utf8_validate (mime_type);
605}
606
607void
608xdg_mime_shutdown (void)
609{
610 XdgCallbackList *list;
611
612 /* FIXME: Need to make this (and the whole library) thread safe */
613 if (dir_time_list)
614 {
615 xdg_dir_time_list_free (dir_time_list);
616 dir_time_list = NULL;
617 }
618
619 if (global_hash)
620 {
621 _xdg_glob_hash_free (global_hash);
622 global_hash = NULL;
623 }
624 if (global_magic)
625 {
626 _xdg_mime_magic_free (global_magic);
627 global_magic = NULL;
628 }
629
630 if (alias_list)
631 {
632 _xdg_mime_alias_list_free (alias_list);
633 alias_list = NULL;
634 }
635
636 if (parent_list)
637 {
638 _xdg_mime_parent_list_free (parent_list);
639 parent_list = NULL;
640 }
641
642 if (icon_list)
643 {
644 _xdg_mime_icon_list_free (icon_list);
645 icon_list = NULL;
646 }
647
648 if (generic_icon_list)
649 {
650 _xdg_mime_icon_list_free (generic_icon_list);
651 generic_icon_list = NULL;
652 }
653
654 if (_caches)
655 {
656 int i;
657
658 for (i = 0; i < n_caches; i++)
659 _xdg_mime_cache_unref (_caches[i]);
660 free (_caches);
661 _caches = NULL;
662 n_caches = 0;
663 }
664
665 for (list = callback_list; list; list = list->next)
666 (list->callback) (list->data);
667
668 need_reread = TRUE;
669}
670
671int
672xdg_mime_get_max_buffer_extents (void)
673{
674 xdg_mime_init ();
675
676 if (_caches)
677 return _xdg_mime_cache_get_max_buffer_extents ();
678
679 return _xdg_mime_magic_get_buffer_extents (global_magic);
680}
681
682const char *
683_xdg_mime_unalias_mime_type (const char *mime_type)
684{
685 const char *lookup;
686
687 if (_caches)
688 return _xdg_mime_cache_unalias_mime_type (mime_type);
689
690 if ((lookup = _xdg_mime_alias_list_lookup (alias_list, mime_type)) != NULL)
691 return lookup;
692
693 return mime_type;
694}
695
696const char *
697xdg_mime_unalias_mime_type (const char *mime_type)
698{
699 xdg_mime_init ();
700
701 return _xdg_mime_unalias_mime_type (mime_type);
702}
703
704int
705_xdg_mime_mime_type_equal (const char *mime_a,
706 const char *mime_b)
707{
708 const char *unalias_a, *unalias_b;
709
710 unalias_a = _xdg_mime_unalias_mime_type (mime_a);
711 unalias_b = _xdg_mime_unalias_mime_type (mime_b);
712
713 if (strcmp (unalias_a, unalias_b) == 0)
714 return 1;
715
716 return 0;
717}
718
719int
720xdg_mime_mime_type_equal (const char *mime_a,
721 const char *mime_b)
722{
723 xdg_mime_init ();
724
725 return _xdg_mime_mime_type_equal (mime_a, mime_b);
726}
727
728int
729xdg_mime_media_type_equal (const char *mime_a,
730 const char *mime_b)
731{
732 char *sep;
733
734 sep = strchr (mime_a, '/');
735
736 if (sep && strncmp (mime_a, mime_b, sep - mime_a + 1) == 0)
737 return 1;
738
739 return 0;
740}
741
742#if 1
743static int
744ends_with (const char *str,
745 const char *suffix)
746{
747 int length;
748 int suffix_length;
749
750 length = strlen (str);
751 suffix_length = strlen (suffix);
752 if (length < suffix_length)
753 return 0;
754
755 if (strcmp (str + length - suffix_length, suffix) == 0)
756 return 1;
757
758 return 0;
759}
760
761static int
762xdg_mime_is_super_type (const char *mime)
763{
764 return ends_with (mime, "/*");
765}
766#endif
767
768int
769_xdg_mime_mime_type_subclass (const char *mime,
770 const char *base)
771{
772 const char *umime, *ubase;
773 const char **parents;
774
775 if (_caches)
776 return _xdg_mime_cache_mime_type_subclass (mime, base);
777
778 umime = _xdg_mime_unalias_mime_type (mime);
779 ubase = _xdg_mime_unalias_mime_type (base);
780
781 if (strcmp (umime, ubase) == 0)
782 return 1;
783
784#if 1
785 /* Handle supertypes */
786 if (xdg_mime_is_super_type (ubase) &&
787 xdg_mime_media_type_equal (umime, ubase))
788 return 1;
789#endif
790
791 /* Handle special cases text/plain and application/octet-stream */
792 if (strcmp (ubase, "text/plain") == 0 &&
793 strncmp (umime, "text/", 5) == 0)
794 return 1;
795
796 if (strcmp (ubase, "application/octet-stream") == 0 &&
797 strncmp (umime, "inode/", 6) != 0)
798 return 1;
799
800 parents = _xdg_mime_parent_list_lookup (parent_list, umime);
801 for (; parents && *parents; parents++)
802 {
803 if (_xdg_mime_mime_type_subclass (*parents, ubase))
804 return 1;
805 }
806
807 return 0;
808}
809
810int
811xdg_mime_mime_type_subclass (const char *mime,
812 const char *base)
813{
814 xdg_mime_init ();
815
816 return _xdg_mime_mime_type_subclass (mime, base);
817}
818
819char **
820xdg_mime_list_mime_parents (const char *mime)
821{
822 const char **parents;
823 char **result;
824 int i, n;
825
826 if (_caches)
827 return _xdg_mime_cache_list_mime_parents (mime);
828
829 parents = xdg_mime_get_mime_parents (mime);
830
831 if (!parents)
832 return NULL;
833
834 for (i = 0; parents[i]; i++) ;
835
836 n = (i + 1) * sizeof (char *);
837 result = (char **) malloc (n);
838 memcpy (result, parents, n);
839
840 return result;
841}
842
843const char **
844xdg_mime_get_mime_parents (const char *mime)
845{
846 const char *umime;
847
848 xdg_mime_init ();
849
850 umime = _xdg_mime_unalias_mime_type (mime);
851
852 return _xdg_mime_parent_list_lookup (parent_list, umime);
853}
854
855void
856xdg_mime_dump (void)
857{
858 xdg_mime_init();
859
860 printf ("*** ALIASES ***\n\n");
861 _xdg_mime_alias_list_dump (alias_list);
862 printf ("\n*** PARENTS ***\n\n");
863 _xdg_mime_parent_list_dump (parent_list);
864 printf ("\n*** CACHE ***\n\n");
865 _xdg_glob_hash_dump (global_hash);
866 printf ("\n*** GLOBS ***\n\n");
867 _xdg_glob_hash_dump (global_hash);
868 printf ("\n*** GLOBS REVERSE TREE ***\n\n");
869 _xdg_mime_cache_glob_dump ();
870}
871
872
873/* Registers a function to be called every time the mime database reloads its files
874 */
875int
876xdg_mime_register_reload_callback (XdgMimeCallback callback,
877 void *data,
878 XdgMimeDestroy destroy)
879{
880 XdgCallbackList *list_el;
881 static int callback_id = 1;
882
883 /* Make a new list element */
884 list_el = calloc (1, sizeof (XdgCallbackList));
885 list_el->callback_id = callback_id;
886 list_el->callback = callback;
887 list_el->data = data;
888 list_el->destroy = destroy;
889 list_el->next = callback_list;
890 if (list_el->next)
891 list_el->next->prev = list_el;
892
893 callback_list = list_el;
894 callback_id ++;
895
896 return callback_id - 1;
897}
898
899void
900xdg_mime_remove_callback (int callback_id)
901{
902 XdgCallbackList *list;
903
904 for (list = callback_list; list; list = list->next)
905 {
906 if (list->callback_id == callback_id)
907 {
908 if (list->next)
909 list->next = list->prev;
910
911 if (list->prev)
912 list->prev->next = list->next;
913 else
914 callback_list = list->next;
915
916 /* invoke the destroy handler */
917 (list->destroy) (list->data);
918 free (list);
919 return;
920 }
921 }
922}
923
924const char *
925xdg_mime_get_icon (const char *mime)
926{
927 xdg_mime_init ();
928
929 if (_caches)
930 return _xdg_mime_cache_get_icon (mime);
931
932 return _xdg_mime_icon_list_lookup (icon_list, mime);
933}
934
935const char *
936xdg_mime_get_generic_icon (const char *mime)
937{
938 xdg_mime_init ();
939
940 if (_caches)
941 return _xdg_mime_cache_get_generic_icon (mime);
942
943 return _xdg_mime_icon_list_lookup (generic_icon_list, mime);
944}
945
946int
947xdg_mime_get_simple_globs (const char *mime,
948 char *globs[],
949 int n_globs)
950{
951 xdg_mime_init ();
952
953 if (_caches)
954 return _xdg_mime_cache_get_simple_globs (mime, globs, n_globs);
955
956 return _xdg_glob_hash_get_simple_globs (global_hash, mime, globs, n_globs);
957}
958