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 2.1 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, see <http://www.gnu.org/licenses/>.
24 */
25
26 #include "config.h"
27
28 #include "xdgmimealias.h"
29 #include "xdgmimeint.h"
30 #include <stdlib.h>
31 #include <stdio.h>
32 #include <assert.h>
33 #include <string.h>
34 #include <fnmatch.h>
35
36 #ifndef FALSE
37 #define FALSE (0)
38 #endif
39
40 #ifndef TRUE
41 #define TRUE (!FALSE)
42 #endif
43
44 typedef struct XdgAlias XdgAlias;
45
46 struct XdgAlias
47 {
48 char *alias;
49 char *mime_type;
50 };
51
52 struct XdgAliasList
53 {
54 struct XdgAlias *aliases;
55 int n_aliases;
56 };
57
58 XdgAliasList *
_xdg_mime_alias_list_new(void)59 _xdg_mime_alias_list_new (void)
60 {
61 XdgAliasList *list;
62
63 list = malloc (sizeof (XdgAliasList));
64
65 list->aliases = NULL;
66 list->n_aliases = 0;
67
68 return list;
69 }
70
71 void
_xdg_mime_alias_list_free(XdgAliasList * list)72 _xdg_mime_alias_list_free (XdgAliasList *list)
73 {
74 int i;
75
76 if (list->aliases)
77 {
78 for (i = 0; i < list->n_aliases; i++)
79 {
80 free (list->aliases[i].alias);
81 free (list->aliases[i].mime_type);
82 }
83 free (list->aliases);
84 }
85 free (list);
86 }
87
88 static int
alias_entry_cmp(const void * v1,const void * v2)89 alias_entry_cmp (const void *v1, const void *v2)
90 {
91 return strcmp (((XdgAlias *)v1)->alias, ((XdgAlias *)v2)->alias);
92 }
93
94 const char *
_xdg_mime_alias_list_lookup(XdgAliasList * list,const char * alias)95 _xdg_mime_alias_list_lookup (XdgAliasList *list,
96 const char *alias)
97 {
98 XdgAlias *entry;
99 XdgAlias key;
100
101 if (list->n_aliases > 0)
102 {
103 key.alias = (char *)alias;
104 key.mime_type = NULL;
105
106 entry = bsearch (&key, list->aliases, list->n_aliases,
107 sizeof (XdgAlias), alias_entry_cmp);
108 if (entry)
109 return entry->mime_type;
110 }
111
112 return NULL;
113 }
114
115 void
_xdg_mime_alias_read_from_file(XdgAliasList * list,const char * file_name)116 _xdg_mime_alias_read_from_file (XdgAliasList *list,
117 const char *file_name)
118 {
119 FILE *file;
120 char line[255];
121 int alloc;
122
123 file = fopen (file_name, "r");
124
125 if (file == NULL)
126 return;
127
128 /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars.
129 * Blah */
130 alloc = list->n_aliases + 16;
131 list->aliases = realloc (list->aliases, alloc * sizeof (XdgAlias));
132 while (fgets (line, 255, file) != NULL)
133 {
134 char *sep;
135 if (line[0] == '#')
136 continue;
137
138 sep = strchr (line, ' ');
139 if (sep == NULL)
140 continue;
141 *(sep++) = '\000';
142 sep[strlen (sep) -1] = '\000';
143 if (list->n_aliases == alloc)
144 {
145 alloc <<= 1;
146 list->aliases = realloc (list->aliases,
147 alloc * sizeof (XdgAlias));
148 }
149 list->aliases[list->n_aliases].alias = strdup (line);
150 list->aliases[list->n_aliases].mime_type = strdup (sep);
151 list->n_aliases++;
152 }
153 list->aliases = realloc (list->aliases,
154 list->n_aliases * sizeof (XdgAlias));
155
156 fclose (file);
157
158 if (list->n_aliases > 1)
159 qsort (list->aliases, list->n_aliases,
160 sizeof (XdgAlias), alias_entry_cmp);
161 }
162
163
164 #ifdef NOT_USED_IN_GIO
165
166 void
_xdg_mime_alias_list_dump(XdgAliasList * list)167 _xdg_mime_alias_list_dump (XdgAliasList *list)
168 {
169 int i;
170
171 if (list->aliases)
172 {
173 for (i = 0; i < list->n_aliases; i++)
174 {
175 printf ("%s %s\n",
176 list->aliases[i].alias,
177 list->aliases[i].mime_type);
178 }
179 }
180 }
181
182 #endif
183