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