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comparison: libgaim/desktopitem.c

libgaim/desktopitem.c

branch
gaim
changeset 20470
77693555855f
parent 10589
4e10236e06d4
parent 14254
77edc7a6191a
child 20471
1966704b3e42
equal deleted inserted replaced
13071:b98e72d4089a 20470:77693555855f
1 /**
2 * @file gaim-desktop-item.c Functions for managing .desktop files
3 * @ingroup core
4 *
5 * Gaim is the legal property of its developers, whose names are too numerous
6 * to list here. Please refer to the COPYRIGHT file distributed with this
7 * source distribution.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25 /*
26 * The following code has been adapted from gnome-desktop-item.[ch],
27 * as found on gnome-desktop-2.8.1.
28 *
29 * Copyright (C) 2004 by Alceste Scalas <alceste.scalas@gmx.net>.
30 *
31 * Original copyright notice:
32 *
33 * Copyright (C) 1999, 2000 Red Hat Inc.
34 * Copyright (C) 2001 Sid Vicious
35 * All rights reserved.
36 *
37 * This file is part of the Gnome Library.
38 *
39 * The Gnome Library is free software; you can redistribute it and/or
40 * modify it under the terms of the GNU Library General Public License as
41 * published by the Free Software Foundation; either version 2 of the
42 * License, or (at your option) any later version.
43 *
44 * The Gnome Library is distributed in the hope that it will be useful,
45 * but WITHOUT ANY WARRANTY; without even the implied warranty of
46 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
47 * Library General Public License for more details.
48 *
49 * You should have received a copy of the GNU Library General Public
50 * License along with the Gnome Library; see the file COPYING.LIB. If not,
51 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
52 * Boston, MA 02111-1307, USA.
53 */
54
55 #include <errno.h>
56 #include <stdio.h>
57 #include <string.h>
58 #include <time.h>
59 #include "desktopitem.h"
60 #include "internal.h"
61
62 struct _GaimDesktopItem {
63 int refcount;
64
65 /* all languages used */
66 GList *languages;
67
68 GaimDesktopItemType type;
69
70 /* `modified' means that the ditem has been
71 * modified since the last save. */
72 gboolean modified;
73
74 /* Keys of the main section only */
75 GList *keys;
76
77 GList *sections;
78
79 /* This includes ALL keys, including
80 * other sections, separated by '/' */
81 GHashTable *main_hash;
82
83 char *location;
84
85 time_t mtime;
86 };
87
88 typedef struct {
89 char *name;
90 GList *keys;
91 } Section;
92
93 typedef enum {
94 ENCODING_UNKNOWN,
95 ENCODING_UTF8,
96 ENCODING_LEGACY_MIXED
97 } Encoding;
98
99 /**************************************************************************
100 * Private utility functions
101 **************************************************************************/
102 static GaimDesktopItemType
103 type_from_string (const char *type)
104 {
105 if (!type)
106 return GAIM_DESKTOP_ITEM_TYPE_NULL;
107
108 switch (type [0]) {
109 case 'A':
110 if (!strcmp (type, "Application"))
111 return GAIM_DESKTOP_ITEM_TYPE_APPLICATION;
112 break;
113 case 'L':
114 if (!strcmp (type, "Link"))
115 return GAIM_DESKTOP_ITEM_TYPE_LINK;
116 break;
117 case 'F':
118 if (!strcmp (type, "FSDevice"))
119 return GAIM_DESKTOP_ITEM_TYPE_FSDEVICE;
120 break;
121 case 'M':
122 if (!strcmp (type, "MimeType"))
123 return GAIM_DESKTOP_ITEM_TYPE_MIME_TYPE;
124 break;
125 case 'D':
126 if (!strcmp (type, "Directory"))
127 return GAIM_DESKTOP_ITEM_TYPE_DIRECTORY;
128 break;
129 case 'S':
130 if (!strcmp (type, "Service"))
131 return GAIM_DESKTOP_ITEM_TYPE_SERVICE;
132
133 else if (!strcmp (type, "ServiceType"))
134 return GAIM_DESKTOP_ITEM_TYPE_SERVICE_TYPE;
135 break;
136 default:
137 break;
138 }
139
140 return GAIM_DESKTOP_ITEM_TYPE_OTHER;
141 }
142
143 static Section *
144 find_section (GaimDesktopItem *item, const char *section)
145 {
146 GList *li;
147 Section *sec;
148
149 if (section == NULL)
150 return NULL;
151 if (strcmp (section, "Desktop Entry") == 0)
152 return NULL;
153
154 for (li = item->sections; li != NULL; li = li->next) {
155 sec = li->data;
156 if (strcmp (sec->name, section) == 0)
157 return sec;
158 }
159
160 sec = g_new0 (Section, 1);
161 sec->name = g_strdup (section);
162 sec->keys = NULL;
163
164 item->sections = g_list_append (item->sections, sec);
165
166 /* Don't mark the item modified, this is just an empty section,
167 * it won't be saved even */
168
169 return sec;
170 }
171
172 static Section *
173 section_from_key (GaimDesktopItem *item, const char *key)
174 {
175 char *p;
176 char *name;
177 Section *sec;
178
179 if (key == NULL)
180 return NULL;
181
182 p = strchr (key, '/');
183 if (p == NULL)
184 return NULL;
185
186 name = g_strndup (key, p - key);
187
188 sec = find_section (item, name);
189
190 g_free (name);
191
192 return sec;
193 }
194
195 static const char *
196 key_basename (const char *key)
197 {
198 char *p = strrchr (key, '/');
199 if (p != NULL)
200 return p+1;
201 else
202 return key;
203 }
204
205 static void
206 set (GaimDesktopItem *item, const char *key, const char *value)
207 {
208 Section *sec = section_from_key (item, key);
209
210 if (sec != NULL) {
211 if (value != NULL) {
212 if (g_hash_table_lookup (item->main_hash, key) == NULL)
213 sec->keys = g_list_append
214 (sec->keys,
215 g_strdup (key_basename (key)));
216
217 g_hash_table_replace (item->main_hash,
218 g_strdup (key),
219 g_strdup (value));
220 } else {
221 GList *list = g_list_find_custom
222 (sec->keys, key_basename (key),
223 (GCompareFunc)strcmp);
224 if (list != NULL) {
225 g_free (list->data);
226 sec->keys =
227 g_list_delete_link (sec->keys, list);
228 }
229 g_hash_table_remove (item->main_hash, key);
230 }
231 } else {
232 if (value != NULL) {
233 if (g_hash_table_lookup (item->main_hash, key) == NULL)
234 item->keys = g_list_append (item->keys,
235 g_strdup (key));
236
237 g_hash_table_replace (item->main_hash,
238 g_strdup (key),
239 g_strdup (value));
240 } else {
241 GList *list = g_list_find_custom
242 (item->keys, key, (GCompareFunc)strcmp);
243 if (list != NULL) {
244 g_free (list->data);
245 item->keys =
246 g_list_delete_link (item->keys, list);
247 }
248 g_hash_table_remove (item->main_hash, key);
249 }
250 }
251 item->modified = TRUE;
252 }
253
254
255 static void
256 _gaim_desktop_item_set_string (GaimDesktopItem *item,
257 const char *attr,
258 const char *value)
259 {
260 g_return_if_fail (item != NULL);
261 g_return_if_fail (item->refcount > 0);
262 g_return_if_fail (attr != NULL);
263
264 set (item, attr, value);
265
266 if (strcmp (attr, GAIM_DESKTOP_ITEM_TYPE) == 0)
267 item->type = type_from_string (value);
268 }
269
270 static GaimDesktopItem *
271 _gaim_desktop_item_new (void)
272 {
273 GaimDesktopItem *retval;
274
275 retval = g_new0 (GaimDesktopItem, 1);
276
277 retval->refcount++;
278
279 retval->main_hash = g_hash_table_new_full (g_str_hash, g_str_equal,
280 (GDestroyNotify) g_free,
281 (GDestroyNotify) g_free);
282
283 /* These are guaranteed to be set */
284 _gaim_desktop_item_set_string (retval,
285 GAIM_DESKTOP_ITEM_NAME,
286 _("No name"));
287 _gaim_desktop_item_set_string (retval,
288 GAIM_DESKTOP_ITEM_ENCODING,
289 "UTF-8");
290 _gaim_desktop_item_set_string (retval,
291 GAIM_DESKTOP_ITEM_VERSION,
292 "1.0");
293
294 return retval;
295 }
296
297 static gpointer
298 _gaim_desktop_item_copy (gpointer boxed)
299 {
300 return gaim_desktop_item_copy (boxed);
301 }
302
303 static void
304 _gaim_desktop_item_free (gpointer boxed)
305 {
306 gaim_desktop_item_unref (boxed);
307 }
308
309 /* Note, does not include the trailing \n */
310 static char *
311 my_fgets (char *buf, gsize bufsize, FILE *df)
312 {
313 int c;
314 gsize pos;
315
316 g_return_val_if_fail (buf != NULL, NULL);
317 g_return_val_if_fail (df != NULL, NULL);
318
319 pos = 0;
320 buf[0] = '\0';
321
322 do {
323 c = getc (df);
324 if (c == EOF || c == '\n')
325 break;
326 buf[pos++] = c;
327 } while (pos < bufsize-1);
328
329 if (c == EOF && pos == 0)
330 return NULL;
331
332 buf[pos++] = '\0';
333
334 return buf;
335 }
336
337 static Encoding
338 get_encoding (FILE *df)
339 {
340 gboolean old_kde = FALSE;
341 char buf [BUFSIZ];
342 gboolean all_valid_utf8 = TRUE;
343
344 while (my_fgets (buf, sizeof (buf), df) != NULL) {
345 if (strncmp (GAIM_DESKTOP_ITEM_ENCODING,
346 buf,
347 strlen (GAIM_DESKTOP_ITEM_ENCODING)) == 0) {
348 char *p = &buf[strlen (GAIM_DESKTOP_ITEM_ENCODING)];
349 if (*p == ' ')
350 p++;
351 if (*p != '=')
352 continue;
353 p++;
354 if (*p == ' ')
355 p++;
356 if (strcmp (p, "UTF-8") == 0) {
357 return ENCODING_UTF8;
358 } else if (strcmp (p, "Legacy-Mixed") == 0) {
359 return ENCODING_LEGACY_MIXED;
360 } else {
361 /* According to the spec we're not supposed
362 * to read a file like this */
363 return ENCODING_UNKNOWN;
364 }
365 } else if (strcmp ("[KDE Desktop Entry]", buf) == 0) {
366 old_kde = TRUE;
367 /* don't break yet, we still want to support
368 * Encoding even here */
369 }
370 if (all_valid_utf8 && ! g_utf8_validate (buf, -1, NULL))
371 all_valid_utf8 = FALSE;
372 }
373
374 if (old_kde)
375 return ENCODING_LEGACY_MIXED;
376
377 /* A dilemma, new KDE files are in UTF-8 but have no Encoding
378 * info, at this time we really can't tell. The best thing to
379 * do right now is to just assume UTF-8 if the whole file
380 * validates as utf8 I suppose */
381
382 if (all_valid_utf8)
383 return ENCODING_UTF8;
384 else
385 return ENCODING_LEGACY_MIXED;
386 }
387
388 static char *
389 snarf_locale_from_key (const char *key)
390 {
391 const char *brace;
392 char *locale, *p;
393
394 brace = strchr (key, '[');
395 if (brace == NULL)
396 return NULL;
397
398 locale = g_strdup (brace + 1);
399 if (*locale == '\0') {
400 g_free (locale);
401 return NULL;
402 }
403 p = strchr (locale, ']');
404 if (p == NULL) {
405 g_free (locale);
406 return NULL;
407 }
408 *p = '\0';
409 return locale;
410 }
411
412 static gboolean
413 check_locale (const char *locale)
414 {
415 GIConv cd = g_iconv_open ("UTF-8", locale);
416 if ((GIConv)-1 == cd)
417 return FALSE;
418 g_iconv_close (cd);
419 return TRUE;
420 }
421
422 static void
423 insert_locales (GHashTable *encodings, char *enc, ...)
424 {
425 va_list args;
426 char *s;
427
428 va_start (args, enc);
429 for (;;) {
430 s = va_arg (args, char *);
431 if (s == NULL)
432 break;
433 g_hash_table_insert (encodings, s, enc);
434 }
435 va_end (args);
436 }
437
438 /* make a standard conversion table from the desktop standard spec */
439 static GHashTable *
440 init_encodings (void)
441 {
442 GHashTable *encodings = g_hash_table_new (g_str_hash, g_str_equal);
443
444 /* "C" is plain ascii */
445 insert_locales (encodings, "ASCII", "C", NULL);
446
447 insert_locales (encodings, "ARMSCII-8", "by", NULL);
448 insert_locales (encodings, "BIG5", "zh_TW", NULL);
449 insert_locales (encodings, "CP1251", "be", "bg", NULL);
450 if (check_locale ("EUC-CN")) {
451 insert_locales (encodings, "EUC-CN", "zh_CN", NULL);
452 } else {
453 insert_locales (encodings, "GB2312", "zh_CN", NULL);
454 }
455 insert_locales (encodings, "EUC-JP", "ja", NULL);
456 insert_locales (encodings, "EUC-KR", "ko", NULL);
457 /*insert_locales (encodings, "GEORGIAN-ACADEMY", NULL);*/
458 insert_locales (encodings, "GEORGIAN-PS", "ka", NULL);
459 insert_locales (encodings, "ISO-8859-1", "br", "ca", "da", "de", "en", "es", "eu", "fi", "fr", "gl", "it", "nl", "wa", "no", "pt", "pt", "sv", NULL);
460 insert_locales (encodings, "ISO-8859-2", "cs", "hr", "hu", "pl", "ro", "sk", "sl", "sq", "sr", NULL);
461 insert_locales (encodings, "ISO-8859-3", "eo", NULL);
462 insert_locales (encodings, "ISO-8859-5", "mk", "sp", NULL);
463 insert_locales (encodings, "ISO-8859-7", "el", NULL);
464 insert_locales (encodings, "ISO-8859-9", "tr", NULL);
465 insert_locales (encodings, "ISO-8859-13", "lt", "lv", "mi", NULL);
466 insert_locales (encodings, "ISO-8859-14", "ga", "cy", NULL);
467 insert_locales (encodings, "ISO-8859-15", "et", NULL);
468 insert_locales (encodings, "KOI8-R", "ru", NULL);
469 insert_locales (encodings, "KOI8-U", "uk", NULL);
470 if (check_locale ("TCVN-5712")) {
471 insert_locales (encodings, "TCVN-5712", "vi", NULL);
472 } else {
473 insert_locales (encodings, "TCVN", "vi", NULL);
474 }
475 insert_locales (encodings, "TIS-620", "th", NULL);
476 /*insert_locales (encodings, "VISCII", NULL);*/
477
478 return encodings;
479 }
480
481 static const char *
482 get_encoding_from_locale (const char *locale)
483 {
484 char lang[3];
485 const char *encoding;
486 static GHashTable *encodings = NULL;
487
488 if (locale == NULL)
489 return NULL;
490
491 /* if locale includes encoding, use it */
492 encoding = strchr (locale, '.');
493 if (encoding != NULL) {
494 return encoding+1;
495 }
496
497 if (encodings == NULL)
498 encodings = init_encodings ();
499
500 /* first try the entire locale (at this point ll_CC) */
501 encoding = g_hash_table_lookup (encodings, locale);
502 if (encoding != NULL)
503 return encoding;
504
505 /* Try just the language */
506 strncpy (lang, locale, 2);
507 lang[2] = '\0';
508 return g_hash_table_lookup (encodings, lang);
509 }
510
511 static char *
512 decode_string_and_dup (const char *s)
513 {
514 char *p = g_malloc (strlen (s) + 1);
515 char *q = p;
516
517 do {
518 if (*s == '\\'){
519 switch (*(++s)){
520 case 's':
521 *p++ = ' ';
522 break;
523 case 't':
524 *p++ = '\t';
525 break;
526 case 'n':
527 *p++ = '\n';
528 break;
529 case '\\':
530 *p++ = '\\';
531 break;
532 case 'r':
533 *p++ = '\r';
534 break;
535 default:
536 *p++ = '\\';
537 *p++ = *s;
538 break;
539 }
540 } else {
541 *p++ = *s;
542 }
543 } while (*s++);
544
545 return q;
546 }
547
548 static char *
549 decode_string (const char *value, Encoding encoding, const char *locale)
550 {
551 char *retval = NULL;
552
553 /* if legacy mixed, then convert */
554 if (locale != NULL && encoding == ENCODING_LEGACY_MIXED) {
555 const char *char_encoding = get_encoding_from_locale (locale);
556 char *utf8_string;
557 if (char_encoding == NULL)
558 return NULL;
559 if (strcmp (char_encoding, "ASCII") == 0) {
560 return decode_string_and_dup (value);
561 }
562 utf8_string = g_convert (value, -1, "UTF-8", char_encoding,
563 NULL, NULL, NULL);
564 if (utf8_string == NULL)
565 return NULL;
566 retval = decode_string_and_dup (utf8_string);
567 g_free (utf8_string);
568 return retval;
569 /* if utf8, then validate */
570 } else if (locale != NULL && encoding == ENCODING_UTF8) {
571 if ( ! g_utf8_validate (value, -1, NULL))
572 /* invalid utf8, ignore this key */
573 return NULL;
574 return decode_string_and_dup (value);
575 } else {
576 /* Meaning this is not a localized string */
577 return decode_string_and_dup (value);
578 }
579 }
580
581 /************************************************************
582 * Parser: *
583 ************************************************************/
584
585 static gboolean G_GNUC_CONST
586 standard_is_boolean (const char * key)
587 {
588 static GHashTable *bools = NULL;
589
590 if (bools == NULL) {
591 bools = g_hash_table_new (g_str_hash, g_str_equal);
592 g_hash_table_insert (bools,
593 GAIM_DESKTOP_ITEM_NO_DISPLAY,
594 GAIM_DESKTOP_ITEM_NO_DISPLAY);
595 g_hash_table_insert (bools,
596 GAIM_DESKTOP_ITEM_HIDDEN,
597 GAIM_DESKTOP_ITEM_HIDDEN);
598 g_hash_table_insert (bools,
599 GAIM_DESKTOP_ITEM_TERMINAL,
600 GAIM_DESKTOP_ITEM_TERMINAL);
601 g_hash_table_insert (bools,
602 GAIM_DESKTOP_ITEM_READ_ONLY,
603 GAIM_DESKTOP_ITEM_READ_ONLY);
604 }
605
606 return g_hash_table_lookup (bools, key) != NULL;
607 }
608
609 static gboolean G_GNUC_CONST
610 standard_is_strings (const char *key)
611 {
612 static GHashTable *strings = NULL;
613
614 if (strings == NULL) {
615 strings = g_hash_table_new (g_str_hash, g_str_equal);
616 g_hash_table_insert (strings,
617 GAIM_DESKTOP_ITEM_FILE_PATTERN,
618 GAIM_DESKTOP_ITEM_FILE_PATTERN);
619 g_hash_table_insert (strings,
620 GAIM_DESKTOP_ITEM_ACTIONS,
621 GAIM_DESKTOP_ITEM_ACTIONS);
622 g_hash_table_insert (strings,
623 GAIM_DESKTOP_ITEM_MIME_TYPE,
624 GAIM_DESKTOP_ITEM_MIME_TYPE);
625 g_hash_table_insert (strings,
626 GAIM_DESKTOP_ITEM_PATTERNS,
627 GAIM_DESKTOP_ITEM_PATTERNS);
628 g_hash_table_insert (strings,
629 GAIM_DESKTOP_ITEM_SORT_ORDER,
630 GAIM_DESKTOP_ITEM_SORT_ORDER);
631 }
632
633 return g_hash_table_lookup (strings, key) != NULL;
634 }
635
636 /* If no need to cannonize, returns NULL */
637 static char *
638 cannonize (const char *key, const char *value)
639 {
640 if (standard_is_boolean (key)) {
641 if (value[0] == 'T' ||
642 value[0] == 't' ||
643 value[0] == 'Y' ||
644 value[0] == 'y' ||
645 atoi (value) != 0) {
646 return g_strdup ("true");
647 } else {
648 return g_strdup ("false");
649 }
650 } else if (standard_is_strings (key)) {
651 int len = strlen (value);
652 if (len == 0 || value[len-1] != ';') {
653 return g_strconcat (value, ";", NULL);
654 }
655 }
656 /* XXX: Perhaps we should canonize numeric values as well, but this
657 * has caused some subtle problems before so it needs to be done
658 * carefully if at all */
659 return NULL;
660 }
661
662 static void
663 insert_key (GaimDesktopItem *item,
664 Section *cur_section,
665 Encoding encoding,
666 const char *key,
667 const char *value,
668 gboolean old_kde,
669 gboolean no_translations)
670 {
671 char *k;
672 char *val;
673 /* we always store everything in UTF-8 */
674 if (cur_section == NULL &&
675 strcmp (key, GAIM_DESKTOP_ITEM_ENCODING) == 0) {
676 k = g_strdup (key);
677 val = g_strdup ("UTF-8");
678 } else {
679 char *locale = snarf_locale_from_key (key);
680 /* If we're ignoring translations */
681 if (no_translations && locale != NULL) {
682 g_free (locale);
683 return;
684 }
685 val = decode_string (value, encoding, locale);
686
687 /* Ignore this key, it's whacked */
688 if (val == NULL) {
689 g_free (locale);
690 return;
691 }
692
693 g_strchomp (val);
694
695 /* For old KDE entries, we can also split by a comma
696 * on sort order, so convert to semicolons */
697 if (old_kde &&
698 cur_section == NULL &&
699 strcmp (key, GAIM_DESKTOP_ITEM_SORT_ORDER) == 0 &&
700 strchr (val, ';') == NULL) {
701 int i;
702 for (i = 0; val[i] != '\0'; i++) {
703 if (val[i] == ',')
704 val[i] = ';';
705 }
706 }
707
708 /* Check some types, not perfect, but catches a lot
709 * of things */
710 if (cur_section == NULL) {
711 char *cannon = cannonize (key, val);
712 if (cannon != NULL) {
713 g_free (val);
714 val = cannon;
715 }
716 }
717
718 k = g_strdup (key);
719
720 /* Take care of the language part */
721 if (locale != NULL &&
722 strcmp (locale, "C") == 0) {
723 char *p;
724 /* Whack C locale */
725 p = strchr (k, '[');
726 if(p) *p = '\0';
727 g_free (locale);
728 } else if (locale != NULL) {
729 char *p, *brace;
730
731 /* Whack the encoding part */
732 p = strchr (locale, '.');
733 if (p != NULL)
734 *p = '\0';
735
736 if (g_list_find_custom (item->languages, locale,
737 (GCompareFunc)strcmp) == NULL) {
738 item->languages = g_list_prepend
739 (item->languages, locale);
740 } else {
741 g_free (locale);
742 }
743
744 /* Whack encoding from encoding in the key */
745 brace = strchr (k, '[');
746 if(brace != NULL) {
747 p = strchr (brace, '.');
748 if (p != NULL) {
749 *p = ']';
750 *(p+1) = '\0';
751 }
752 }
753 }
754 }
755
756
757 if (cur_section == NULL) {
758 /* only add to list if we haven't seen it before */
759 if (g_hash_table_lookup (item->main_hash, k) == NULL) {
760 item->keys = g_list_prepend (item->keys,
761 g_strdup (k));
762 }
763 /* later duplicates override earlier ones */
764 g_hash_table_replace (item->main_hash, k, val);
765 } else {
766 char *full = g_strdup_printf
767 ("%s/%s",
768 cur_section->name, k);
769 /* only add to list if we haven't seen it before */
770 if (g_hash_table_lookup (item->main_hash, full) == NULL) {
771 cur_section->keys =
772 g_list_prepend (cur_section->keys, k);
773 }
774 /* later duplicates override earlier ones */
775 g_hash_table_replace (item->main_hash,
776 full, val);
777 }
778 }
779
780 static const char *
781 lookup (const GaimDesktopItem *item, const char *key)
782 {
783 return g_hash_table_lookup (item->main_hash, key);
784 }
785
786 static void
787 setup_type (GaimDesktopItem *item, const char *uri)
788 {
789 const char *type = g_hash_table_lookup (item->main_hash,
790 GAIM_DESKTOP_ITEM_TYPE);
791 if (type == NULL && uri != NULL) {
792 char *base = g_path_get_basename (uri);
793 if (base != NULL &&
794 strcmp (base, ".directory") == 0) {
795 /* This gotta be a directory */
796 g_hash_table_replace (item->main_hash,
797 g_strdup (GAIM_DESKTOP_ITEM_TYPE),
798 g_strdup ("Directory"));
799 item->keys = g_list_prepend
800 (item->keys, g_strdup (GAIM_DESKTOP_ITEM_TYPE));
801 item->type = GAIM_DESKTOP_ITEM_TYPE_DIRECTORY;
802 } else {
803 item->type = GAIM_DESKTOP_ITEM_TYPE_NULL;
804 }
805 g_free (base);
806 } else {
807 item->type = type_from_string (type);
808 }
809 }
810
811 static const char *
812 lookup_locale (const GaimDesktopItem *item, const char *key, const char *locale)
813 {
814 if (locale == NULL ||
815 strcmp (locale, "C") == 0) {
816 return lookup (item, key);
817 } else {
818 const char *ret;
819 char *full = g_strdup_printf ("%s[%s]", key, locale);
820 ret = lookup (item, full);
821 g_free (full);
822 return ret;
823 }
824 }
825
826 /* fallback to find something suitable for C locale */
827 static char *
828 try_english_key (GaimDesktopItem *item, const char *key)
829 {
830 char *str;
831 char *locales[] = { "en_US", "en_GB", "en_AU", "en", NULL };
832 int i;
833
834 str = NULL;
835 for (i = 0; locales[i] != NULL && str == NULL; i++) {
836 str = g_strdup (lookup_locale (item, key, locales[i]));
837 }
838 if (str != NULL) {
839 /* We need a 7-bit ascii string, so whack all
840 * above 127 chars */
841 guchar *p;
842 for (p = (guchar *)str; *p != '\0'; p++) {
843 if (*p > 127)
844 *p = '?';
845 }
846 }
847 return str;
848 }
849
850
851 static void
852 sanitize (GaimDesktopItem *item, const char *uri)
853 {
854 const char *type;
855
856 type = lookup (item, GAIM_DESKTOP_ITEM_TYPE);
857
858 /* understand old gnome style url exec thingies */
859 if (type != NULL && strcmp (type, "URL") == 0) {
860 const char *exec = lookup (item, GAIM_DESKTOP_ITEM_EXEC);
861 set (item, GAIM_DESKTOP_ITEM_TYPE, "Link");
862 if (exec != NULL) {
863 /* Note, this must be in this order */
864 set (item, GAIM_DESKTOP_ITEM_URL, exec);
865 set (item, GAIM_DESKTOP_ITEM_EXEC, NULL);
866 }
867 }
868
869 /* we make sure we have Name, Encoding and Version */
870 if (lookup (item, GAIM_DESKTOP_ITEM_NAME) == NULL) {
871 char *name = try_english_key (item, GAIM_DESKTOP_ITEM_NAME);
872 /* If no name, use the basename */
873 if (name == NULL && uri != NULL)
874 name = g_path_get_basename (uri);
875 /* If no uri either, use same default as gnome_desktop_item_new */
876 if (name == NULL)
877 name = g_strdup (_("No name"));
878 g_hash_table_replace (item->main_hash,
879 g_strdup (GAIM_DESKTOP_ITEM_NAME),
880 name);
881 item->keys = g_list_prepend
882 (item->keys, g_strdup (GAIM_DESKTOP_ITEM_NAME));
883 }
884 if (lookup (item, GAIM_DESKTOP_ITEM_ENCODING) == NULL) {
885 /* We store everything in UTF-8 so write that down */
886 g_hash_table_replace (item->main_hash,
887 g_strdup (GAIM_DESKTOP_ITEM_ENCODING),
888 g_strdup ("UTF-8"));
889 item->keys = g_list_prepend
890 (item->keys, g_strdup (GAIM_DESKTOP_ITEM_ENCODING));
891 }
892 if (lookup (item, GAIM_DESKTOP_ITEM_VERSION) == NULL) {
893 /* this is the version that we follow, so write it down */
894 g_hash_table_replace (item->main_hash,
895 g_strdup (GAIM_DESKTOP_ITEM_VERSION),
896 g_strdup ("1.0"));
897 item->keys = g_list_prepend
898 (item->keys, g_strdup (GAIM_DESKTOP_ITEM_VERSION));
899 }
900 }
901
902 enum {
903 FirstBrace,
904 OnSecHeader,
905 IgnoreToEOL,
906 IgnoreToEOLFirst,
907 KeyDef,
908 KeyDefOnKey,
909 KeyValue
910 };
911
912 static GaimDesktopItem *
913 ditem_load (FILE *df,
914 gboolean no_translations,
915 const char *uri)
916 {
917 int state;
918 char CharBuffer [1024];
919 char *next = CharBuffer;
920 int c;
921 Encoding encoding;
922 GaimDesktopItem *item;
923 Section *cur_section = NULL;
924 char *key = NULL;
925 gboolean old_kde = FALSE;
926
927 encoding = get_encoding (df);
928 if (encoding == ENCODING_UNKNOWN) {
929 fclose(df);
930 /* spec says, don't read this file */
931 printf ("Unknown encoding of .desktop file");
932
933 return NULL;
934 }
935
936 /* Rewind since get_encoding goes through the file */
937 if (fseek(df, 0L, SEEK_SET)) {
938 fclose(df);
939 /* spec says, don't read this file */
940 printf ("fseek() error on .desktop file");
941 return NULL;
942 }
943
944 item = _gaim_desktop_item_new ();
945 item->modified = FALSE;
946
947 /* Note: location and mtime are filled in by the new_from_file
948 * function since it has those values */
949
950 #define GAIM_DESKTOP_ITEM_OVERFLOW (next == &CharBuffer [sizeof(CharBuffer)-1])
951
952 state = FirstBrace;
953 while ((c = getc (df)) != EOF) {
954 if (c == '\r') /* Ignore Carriage Return */
955 continue;
956
957 switch (state) {
958
959 case OnSecHeader:
960 if (c == ']' || GAIM_DESKTOP_ITEM_OVERFLOW) {
961 *next = '\0';
962 next = CharBuffer;
963
964 /* keys were inserted in reverse */
965 if (cur_section != NULL &&
966 cur_section->keys != NULL) {
967 cur_section->keys = g_list_reverse
968 (cur_section->keys);
969 }
970 if (strcmp (CharBuffer,
971 "KDE Desktop Entry") == 0) {
972 /* Main section */
973 cur_section = NULL;
974 old_kde = TRUE;
975 } else if (strcmp (CharBuffer,
976 "Desktop Entry") == 0) {
977 /* Main section */
978 cur_section = NULL;
979 } else {
980 cur_section = g_new0 (Section, 1);
981 cur_section->name =
982 g_strdup (CharBuffer);
983 cur_section->keys = NULL;
984 item->sections = g_list_prepend
985 (item->sections, cur_section);
986 }
987 state = IgnoreToEOL;
988 } else if (c == '[') {
989 /* FIXME: probably error out instead of ignoring this */
990 } else {
991 *next++ = c;
992 }
993 break;
994
995 case IgnoreToEOL:
996 case IgnoreToEOLFirst:
997 if (c == '\n'){
998 if (state == IgnoreToEOLFirst)
999 state = FirstBrace;
1000 else
1001 state = KeyDef;
1002 next = CharBuffer;
1003 }
1004 break;
1005
1006 case FirstBrace:
1007 case KeyDef:
1008 case KeyDefOnKey:
1009 if (c == '#') {
1010 if (state == FirstBrace)
1011 state = IgnoreToEOLFirst;
1012 else
1013 state = IgnoreToEOL;
1014 break;
1015 }
1016
1017 if (c == '[' && state != KeyDefOnKey){
1018 state = OnSecHeader;
1019 next = CharBuffer;
1020 g_free (key);
1021 key = NULL;
1022 break;
1023 }
1024 /* On first pass, don't allow dangling keys */
1025 if (state == FirstBrace)
1026 break;
1027
1028 if ((c == ' ' && state != KeyDefOnKey) || c == '\t')
1029 break;
1030
1031 if (c == '\n' || GAIM_DESKTOP_ITEM_OVERFLOW) { /* Abort Definition */
1032 next = CharBuffer;
1033 state = KeyDef;
1034 break;
1035 }
1036
1037 if (c == '=' || GAIM_DESKTOP_ITEM_OVERFLOW){
1038 *next = '\0';
1039
1040 g_free (key);
1041 key = g_strdup (CharBuffer);
1042 state = KeyValue;
1043 next = CharBuffer;
1044 } else {
1045 *next++ = c;
1046 state = KeyDefOnKey;
1047 }
1048 break;
1049
1050 case KeyValue:
1051 if (GAIM_DESKTOP_ITEM_OVERFLOW || c == '\n'){
1052 *next = '\0';
1053
1054 insert_key (item, cur_section, encoding,
1055 key, CharBuffer, old_kde,
1056 no_translations);
1057
1058 g_free (key);
1059 key = NULL;
1060
1061 state = (c == '\n') ? KeyDef : IgnoreToEOL;
1062 next = CharBuffer;
1063 } else {
1064 *next++ = c;
1065 }
1066 break;
1067
1068 } /* switch */
1069
1070 } /* while ((c = getc_unlocked (f)) != EOF) */
1071 if (c == EOF && state == KeyValue) {
1072 *next = '\0';
1073
1074 insert_key (item, cur_section, encoding,
1075 key, CharBuffer, old_kde,
1076 no_translations);
1077
1078 g_free (key);
1079 key = NULL;
1080 }
1081
1082 #undef GAIM_DESKTOP_ITEM_OVERFLOW
1083
1084 /* keys were inserted in reverse */
1085 if (cur_section != NULL &&
1086 cur_section->keys != NULL) {
1087 cur_section->keys = g_list_reverse (cur_section->keys);
1088 }
1089 /* keys were inserted in reverse */
1090 item->keys = g_list_reverse (item->keys);
1091 /* sections were inserted in reverse */
1092 item->sections = g_list_reverse (item->sections);
1093
1094 /* sanitize some things */
1095 sanitize (item, uri);
1096
1097 /* make sure that we set up the type */
1098 setup_type (item, uri);
1099
1100 fclose (df);
1101
1102 return item;
1103 }
1104
1105 static void
1106 copy_string_hash (gpointer key, gpointer value, gpointer user_data)
1107 {
1108 GHashTable *copy = user_data;
1109 g_hash_table_replace (copy,
1110 g_strdup (key),
1111 g_strdup (value));
1112 }
1113
1114 static void
1115 free_section (gpointer data, gpointer user_data)
1116 {
1117 Section *section = data;
1118
1119 g_free (section->name);
1120 section->name = NULL;
1121
1122 g_list_foreach (section->keys, (GFunc)g_free, NULL);
1123 g_list_free (section->keys);
1124 section->keys = NULL;
1125
1126 g_free (section);
1127 }
1128
1129 static Section *
1130 dup_section (Section *sec)
1131 {
1132 GList *li;
1133 Section *retval = g_new0 (Section, 1);
1134
1135 retval->name = g_strdup (sec->name);
1136
1137 retval->keys = g_list_copy (sec->keys);
1138 for (li = retval->keys; li != NULL; li = li->next)
1139 li->data = g_strdup (li->data);
1140
1141 return retval;
1142 }
1143
1144 /**************************************************************************
1145 * Public functions
1146 **************************************************************************/
1147 GaimDesktopItem *
1148 gaim_desktop_item_new_from_file (const char *filename)
1149 {
1150 GaimDesktopItem *retval;
1151 FILE *dfile;
1152
1153 g_return_val_if_fail (filename != NULL, NULL);
1154
1155 dfile = g_fopen(filename, "r");
1156 if (!dfile) {
1157 printf ("Can't open %s: %s", filename, strerror(errno));
1158 return NULL;
1159 }
1160
1161 retval = ditem_load(dfile, FALSE, filename);
1162
1163 return retval;
1164 }
1165
1166 GaimDesktopItemType
1167 gaim_desktop_item_get_entry_type (const GaimDesktopItem *item)
1168 {
1169 g_return_val_if_fail (item != NULL, 0);
1170 g_return_val_if_fail (item->refcount > 0, 0);
1171
1172 return item->type;
1173 }
1174
1175 const char *
1176 gaim_desktop_item_get_string (const GaimDesktopItem *item,
1177 const char *attr)
1178 {
1179 g_return_val_if_fail (item != NULL, NULL);
1180 g_return_val_if_fail (item->refcount > 0, NULL);
1181 g_return_val_if_fail (attr != NULL, NULL);
1182
1183 return lookup (item, attr);
1184 }
1185
1186 GaimDesktopItem *
1187 gaim_desktop_item_copy (const GaimDesktopItem *item)
1188 {
1189 GList *li;
1190 GaimDesktopItem *retval;
1191
1192 g_return_val_if_fail (item != NULL, NULL);
1193 g_return_val_if_fail (item->refcount > 0, NULL);
1194
1195 retval = _gaim_desktop_item_new ();
1196
1197 retval->type = item->type;
1198 retval->modified = item->modified;
1199 retval->location = g_strdup (item->location);
1200 retval->mtime = item->mtime;
1201
1202 /* Languages */
1203 retval->languages = g_list_copy (item->languages);
1204 for (li = retval->languages; li != NULL; li = li->next)
1205 li->data = g_strdup (li->data);
1206
1207 /* Keys */
1208 retval->keys = g_list_copy (item->keys);
1209 for (li = retval->keys; li != NULL; li = li->next)
1210 li->data = g_strdup (li->data);
1211
1212 /* Sections */
1213 retval->sections = g_list_copy (item->sections);
1214 for (li = retval->sections; li != NULL; li = li->next)
1215 li->data = dup_section (li->data);
1216
1217 retval->main_hash = g_hash_table_new_full (g_str_hash, g_str_equal,
1218 (GDestroyNotify) g_free,
1219 (GDestroyNotify) g_free);
1220
1221 g_hash_table_foreach (item->main_hash,
1222 copy_string_hash,
1223 retval->main_hash);
1224
1225 return retval;
1226 }
1227
1228 void
1229 gaim_desktop_item_unref (GaimDesktopItem *item)
1230 {
1231 g_return_if_fail (item != NULL);
1232 g_return_if_fail (item->refcount > 0);
1233
1234 item->refcount--;
1235
1236 if(item->refcount != 0)
1237 return;
1238
1239 g_list_foreach (item->languages, (GFunc)g_free, NULL);
1240 g_list_free (item->languages);
1241 item->languages = NULL;
1242
1243 g_list_foreach (item->keys, (GFunc)g_free, NULL);
1244 g_list_free (item->keys);
1245 item->keys = NULL;
1246
1247 g_list_foreach (item->sections, free_section, NULL);
1248 g_list_free (item->sections);
1249 item->sections = NULL;
1250
1251 g_hash_table_destroy (item->main_hash);
1252 item->main_hash = NULL;
1253
1254 g_free (item->location);
1255 item->location = NULL;
1256
1257 g_free (item);
1258 }
1259
1260 GType
1261 gaim_desktop_item_get_type (void)
1262 {
1263 static GType type = 0;
1264
1265 if (type == 0) {
1266 type = g_boxed_type_register_static ("GaimDesktopItem",
1267 _gaim_desktop_item_copy,
1268 _gaim_desktop_item_free);
1269 }
1270
1271 return type;
1272 }

Mercurial Repository: pidgin3

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