1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* xdgmimeglob.c: Private file. Datastructure for storing the globs.
4 * More info can be found at http://www.freedesktop.org/standards/
6 * Copyright (C) 2003 Red Hat, Inc.
7 * Copyright (C) 2003 Jonathan Blandford <jrb@alum.mit.edu>
9 * Licensed under the Academic Free License version 2.0
10 * Or under the following terms:
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.
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.
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.
32 #include "xdgmimeglob.h"
33 #include "xdgmimeint.h"
48 typedef struct XdgGlobHashNode XdgGlobHashNode;
49 typedef struct XdgGlobList XdgGlobList;
51 struct XdgGlobHashNode
53 xdg_unichar_t character;
54 const char *mime_type;
55 XdgGlobHashNode *next;
56 XdgGlobHashNode *child;
61 const char *mime_type;
67 XdgGlobList *literal_list;
68 XdgGlobHashNode *simple_node;
69 XdgGlobList *full_list;
76 _xdg_glob_list_new (void)
78 XdgGlobList *new_element;
80 new_element = calloc (1, sizeof (XdgGlobList));
85 /* Frees glob_list and all of it's children */
87 _xdg_glob_list_free (XdgGlobList *glob_list)
89 XdgGlobList *ptr, *next;
98 free ((void *) ptr->data);
100 free ((void *) ptr->mime_type);
108 _xdg_glob_list_append (XdgGlobList *glob_list,
110 const char *mime_type)
112 XdgGlobList *new_element;
113 XdgGlobList *tmp_element;
115 new_element = _xdg_glob_list_new ();
116 new_element->data = data;
117 new_element->mime_type = mime_type;
118 if (glob_list == NULL)
121 tmp_element = glob_list;
122 while (tmp_element->next != NULL)
123 tmp_element = tmp_element->next;
125 tmp_element->next = new_element;
132 _xdg_glob_list_prepend (XdgGlobList *glob_list,
134 const char *mime_type)
136 XdgGlobList *new_element;
138 new_element = _xdg_glob_list_new ();
139 new_element->data = data;
140 new_element->next = glob_list;
141 new_element->mime_type = mime_type;
150 static XdgGlobHashNode *
151 _xdg_glob_hash_node_new (void)
153 XdgGlobHashNode *glob_hash_node;
155 glob_hash_node = calloc (1, sizeof (XdgGlobHashNode));
157 return glob_hash_node;
161 _xdg_glob_hash_node_dump (XdgGlobHashNode *glob_hash_node,
165 for (i = 0; i < depth; i++)
168 printf ("%c", (char)glob_hash_node->character);
169 if (glob_hash_node->mime_type)
170 printf (" - %s\n", glob_hash_node->mime_type);
173 if (glob_hash_node->child)
174 _xdg_glob_hash_node_dump (glob_hash_node->child, depth + 1);
175 if (glob_hash_node->next)
176 _xdg_glob_hash_node_dump (glob_hash_node->next, depth);
179 static XdgGlobHashNode *
180 _xdg_glob_hash_insert_text (XdgGlobHashNode *glob_hash_node,
182 const char *mime_type)
184 XdgGlobHashNode *node;
185 xdg_unichar_t character;
187 character = _xdg_utf8_to_ucs4 (text);
189 if ((glob_hash_node == NULL) ||
190 (character < glob_hash_node->character))
192 node = _xdg_glob_hash_node_new ();
193 node->character = character;
194 node->next = glob_hash_node;
195 glob_hash_node = node;
197 else if (character == glob_hash_node->character)
199 node = glob_hash_node;
203 XdgGlobHashNode *prev_node;
204 int found_node = FALSE;
206 /* Look for the first character of text in glob_hash_node, and insert it if we
208 prev_node = glob_hash_node;
209 node = prev_node->next;
213 if (character < node->character)
215 node = _xdg_glob_hash_node_new ();
216 node->character = character;
217 node->next = prev_node->next;
218 prev_node->next = node;
223 else if (character == node->character)
234 node = _xdg_glob_hash_node_new ();
235 node->character = character;
236 node->next = prev_node->next;
237 prev_node->next = node;
241 text = _xdg_utf8_next_char (text);
246 if (strcmp (node->mime_type, mime_type))
248 XdgGlobHashNode *child;
249 int found_node = FALSE;
252 while (child && child->character == '\0')
254 if (strcmp (child->mime_type, mime_type) == 0)
264 child = _xdg_glob_hash_node_new ();
265 child->character = '\000';
266 child->mime_type = strdup (mime_type);
268 child->next = node->child;
275 node->mime_type = strdup (mime_type);
280 node->child = _xdg_glob_hash_insert_text (node->child, text, mime_type);
282 return glob_hash_node;
286 _xdg_glob_hash_node_lookup_file_name (XdgGlobHashNode *glob_hash_node,
287 const char *file_name,
289 const char *mime_types[],
293 XdgGlobHashNode *node;
294 xdg_unichar_t character;
296 if (glob_hash_node == NULL)
299 character = _xdg_utf8_to_ucs4 (file_name);
301 character = _xdg_ucs4_to_lower(character);
303 for (node = glob_hash_node; node && character >= node->character; node = node->next)
305 if (character == node->character)
307 file_name = _xdg_utf8_next_char (file_name);
308 if (*file_name == '\000')
312 if (node->mime_type != NULL)
313 mime_types[n++] = node->mime_type;
316 while (n < n_mime_types && node && node->character == 0)
318 if (node->mime_type != NULL)
319 mime_types[n++] = node->mime_type;
326 n = _xdg_glob_hash_node_lookup_file_name (node->child,
340 _xdg_glob_hash_lookup_file_name (XdgGlobHash *glob_hash,
341 const char *file_name,
342 const char *mime_types[],
349 XdgGlobHashNode *node;
351 /* First, check the literals */
353 assert (file_name != NULL && n_mime_types > 0);
355 for (list = glob_hash->literal_list; list; list = list->next)
357 if (strcmp ((const char *)list->data, file_name) == 0)
359 mime_types[0] = list->mime_type;
365 for (node = glob_hash->simple_node; node; node = node->next)
367 if (node->character < 128)
368 stopchars[i++] = (char)node->character;
372 ptr = strpbrk (file_name, stopchars);
375 n = _xdg_glob_hash_node_lookup_file_name (glob_hash->simple_node, ptr, FALSE,
376 mime_types, n_mime_types);
380 n = _xdg_glob_hash_node_lookup_file_name (glob_hash->simple_node, ptr, TRUE,
381 mime_types, n_mime_types);
385 ptr = strpbrk (ptr + 1, stopchars);
388 /* FIXME: Not UTF-8 safe */
390 for (list = glob_hash->full_list; list && n < n_mime_types; list = list->next)
392 if (fnmatch ((const char *)list->data, file_name, 0) == 0)
393 mime_types[n++] = list->mime_type;
405 _xdg_glob_hash_new (void)
407 XdgGlobHash *glob_hash;
409 glob_hash = calloc (1, sizeof (XdgGlobHash));
416 _xdg_glob_hash_free_nodes (XdgGlobHashNode *node)
421 _xdg_glob_hash_free_nodes (node->child);
423 _xdg_glob_hash_free_nodes (node->next);
425 free ((void *) node->mime_type);
431 _xdg_glob_hash_free (XdgGlobHash *glob_hash)
433 _xdg_glob_list_free (glob_hash->literal_list);
434 _xdg_glob_list_free (glob_hash->full_list);
435 _xdg_glob_hash_free_nodes (glob_hash->simple_node);
440 _xdg_glob_determine_type (const char *glob)
443 int maybe_in_simple_glob = FALSE;
444 int first_char = TRUE;
448 while (*ptr != '\000')
450 if (*ptr == '*' && first_char)
451 maybe_in_simple_glob = TRUE;
452 else if (*ptr == '\\' || *ptr == '[' || *ptr == '?' || *ptr == '*')
453 return XDG_GLOB_FULL;
456 ptr = _xdg_utf8_next_char (ptr);
458 if (maybe_in_simple_glob)
459 return XDG_GLOB_SIMPLE;
461 return XDG_GLOB_LITERAL;
464 /* glob must be valid UTF-8 */
466 _xdg_glob_hash_append_glob (XdgGlobHash *glob_hash,
468 const char *mime_type)
472 assert (glob_hash != NULL);
473 assert (glob != NULL);
475 type = _xdg_glob_determine_type (glob);
479 case XDG_GLOB_LITERAL:
480 glob_hash->literal_list = _xdg_glob_list_append (glob_hash->literal_list, strdup (glob), strdup (mime_type));
482 case XDG_GLOB_SIMPLE:
483 glob_hash->simple_node = _xdg_glob_hash_insert_text (glob_hash->simple_node, glob + 1, mime_type);
486 glob_hash->full_list = _xdg_glob_list_append (glob_hash->full_list, strdup (glob), strdup (mime_type));
492 _xdg_glob_hash_dump (XdgGlobHash *glob_hash)
495 printf ("LITERAL STRINGS\n");
496 if (glob_hash->literal_list == NULL)
502 for (list = glob_hash->literal_list; list; list = list->next)
503 printf (" %s - %s\n", (char *)list->data, list->mime_type);
505 printf ("\nSIMPLE GLOBS\n");
506 _xdg_glob_hash_node_dump (glob_hash->simple_node, 4);
508 printf ("\nFULL GLOBS\n");
509 if (glob_hash->full_list == NULL)
515 for (list = glob_hash->full_list; list; list = list->next)
516 printf (" %s - %s\n", (char *)list->data, list->mime_type);
522 _xdg_mime_glob_read_from_file (XdgGlobHash *glob_hash,
523 const char *file_name)
528 glob_file = fopen (file_name, "r");
530 if (glob_file == NULL)
533 /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars.
535 while (fgets (line, 255, glob_file) != NULL)
541 colon = strchr (line, ':');
545 colon[strlen (colon) -1] = '\000';
546 _xdg_glob_hash_append_glob (glob_hash, colon, line);