1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* xdgmimealias.c: Private file. Datastructure for storing the aliases.
3 *
4 * More info can be found at http://www.freedesktop.org/standards/
5 *
6 * Copyright (C) 2004 Red Hat, Inc.
7 * Copyright (C) 2004 Matthias Clasen <mclasen@redhat.com>
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 <config.h>
30 #endif
31
32 #include "xdgmimealias.h"
33 #include "xdgmimeint.h"
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <assert.h>
37 #include <string.h>
38 #include <fnmatch.h>
39
40 #ifndef FALSE
41 #define FALSE (0)
42 #endif
43
44 #ifndef TRUE
45 #define TRUE (!FALSE)
46 #endif
47
48 typedef struct XdgAlias XdgAlias;
49
50 struct XdgAlias
51 {
52 char *alias;
53 char *mime_type;
54 };
55
56 struct XdgAliasList
57 {
58 struct XdgAlias *aliases;
59 int n_aliases;
60 };
61
62 XdgAliasList *
_xdg_mime_alias_list_new(void)63 _xdg_mime_alias_list_new (void)
64 {
65 XdgAliasList *list;
66
67 list = malloc (sizeof (XdgAliasList));
68
69 list->aliases = NULL;
70 list->n_aliases = 0;
71
72 return list;
73 }
74
75 void
_xdg_mime_alias_list_free(XdgAliasList * list)76 _xdg_mime_alias_list_free (XdgAliasList *list)
77 {
78 int i;
79
80 if (list->aliases)
81 {
82 for (i = 0; i < list->n_aliases; i++)
83 {
84 free (list->aliases[i].alias);
85 free (list->aliases[i].mime_type);
86 }
87 free (list->aliases);
88 }
89 free (list);
90 }
91
92 static int
alias_entry_cmp(const void * v1,const void * v2)93 alias_entry_cmp (const void *v1, const void *v2)
94 {
95 return strcmp (((XdgAlias *)v1)->alias, ((XdgAlias *)v2)->alias);
96 }
97
98 const char *
_xdg_mime_alias_list_lookup(XdgAliasList * list,const char * alias)99 _xdg_mime_alias_list_lookup (XdgAliasList *list,
100 const char *alias)
101 {
102 XdgAlias *entry;
103 XdgAlias key;
104
105 if (list->n_aliases > 0)
106 {
107 key.alias = (char *)alias;
108 key.mime_type = NULL;
109
110 entry = bsearch (&key, list->aliases, list->n_aliases,
111 sizeof (XdgAlias), alias_entry_cmp);
112 if (entry)
113 return entry->mime_type;
114 }
115
116 return NULL;
117 }
118
119 void
_xdg_mime_alias_read_from_file(XdgAliasList * list,const char * file_name)120 _xdg_mime_alias_read_from_file (XdgAliasList *list,
121 const char *file_name)
122 {
123 FILE *file;
124 char line[255];
125 int alloc;
126
127 file = fopen (file_name, "r");
128
129 if (file == NULL)
130 return;
131
132 /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars.
133 * Blah */
134 alloc = list->n_aliases + 16;
135 list->aliases = realloc (list->aliases, alloc * sizeof (XdgAlias));
136 while (fgets (line, 255, file) != NULL)
137 {
138 char *sep;
139 if (line[0] == '#')
140 continue;
141
142 sep = strchr (line, ' ');
143 if (sep == NULL)
144 continue;
145 *(sep++) = '\000';
146 sep[strlen (sep) -1] = '\000';
147 if (list->n_aliases == alloc)
148 {
149 alloc <<= 1;
150 list->aliases = realloc (list->aliases,
151 alloc * sizeof (XdgAlias));
152 }
153 list->aliases[list->n_aliases].alias = strdup (line);
154 list->aliases[list->n_aliases].mime_type = strdup (sep);
155 list->n_aliases++;
156 }
157 list->aliases = realloc (list->aliases,
158 list->n_aliases * sizeof (XdgAlias));
159
160 fclose (file);
161
162 if (list->n_aliases > 1)
163 qsort (list->aliases, list->n_aliases,
164 sizeof (XdgAlias), alias_entry_cmp);
165 }
166
167
168 void
_xdg_mime_alias_list_dump(XdgAliasList * list)169 _xdg_mime_alias_list_dump (XdgAliasList *list)
170 {
171 int i;
172
173 if (list->aliases)
174 {
175 for (i = 0; i < list->n_aliases; i++)
176 {
177 printf ("%s %s\n",
178 list->aliases[i].alias,
179 list->aliases[i].mime_type);
180 }
181 }
182 }
183
184
185