gio/xdgmime/xdgmimeicon.c

   1 /* -*- mode: C; c-file-style: "gnu" -*- */
   2 /* xdgmimeicon.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) 2008  Red Hat, Inc.
   7  *
   8  * Licensed under the Academic Free License version 2.0
   9  * Or under the following terms:
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include "xdgmimeicon.h"
  30 #include "xdgmimeint.h"
  31 #include <stdlib.h>
  32 #include <stdio.h>
  33 #include <assert.h>
  34 #include <string.h>
  35 #include <fnmatch.h>
  36
  37 #ifndef FALSE
  38 #define FALSE   (0)
  39 #endif
  40
  41 #ifndef TRUE
  42 #define TRUE    (!FALSE)
  43 #endif
  44
  45 typedef struct XdgIcon XdgIcon;
  46
  47 struct XdgIcon
  48 {
  49   char *mime_type;
  50   char *icon_name;
  51 };
  52
  53 struct XdgIconList
  54 {
  55   struct XdgIcon *icons;
  56   int n_icons;
  57 };
  58
  59 XdgIconList *
  60 _xdg_mime_icon_list_new (void)
  61 {
  62   XdgIconList *list;
  63
  64   list = malloc (sizeof (XdgIconList));
  65
  66   list->icons = NULL;
  67   list->n_icons = 0;
  68
  69   return list;
  70 }
  71
  72 void
  73 _xdg_mime_icon_list_free (XdgIconList *list)
  74 {
  75   int i;
  76
  77   if (list->icons)
  78     {
  79       for (i = 0; i < list->n_icons; i++)
  80         {
  81           free (list->icons[i].mime_type);
  82           free (list->icons[i].icon_name);
  83         }
  84       free (list->icons);
  85     }
  86   free (list);
  87 }
  88
  89 static int
  90 icon_entry_cmp (const void *v1, const void *v2)
  91 {
  92   return strcmp (((XdgIcon *)v1)->mime_type, ((XdgIcon *)v2)->mime_type);
  93 }
  94
  95 const char  *
  96 _xdg_mime_icon_list_lookup (XdgIconList *list,
  97                             const char  *mime_type)
  98 {
  99   XdgIcon *entry;
 100   XdgIcon key;
 101
 102   if (list->n_icons > 0)
 103     {
 104       key.mime_type = (char *)mime_type;
 105       key.icon_name = NULL;
 106
 107       entry = bsearch (&key, list->icons, list->n_icons,
 108                        sizeof (XdgIcon), icon_entry_cmp);
 109       if (entry)
 110         return entry->icon_name;
 111     }
 112
 113   return NULL;
 114 }
 115
 116 void
 117 _xdg_mime_icon_read_from_file (XdgIconList *list,
 118                                const char   *file_name)
 119 {
 120   FILE *file;
 121   char line[255];
 122   int alloc;
 123
 124   file = fopen (file_name, "r");
 125
 126   if (file == NULL)
 127     return;
 128
 129   /* FIXME: Not UTF-8 safe.  Doesn't work if lines are greater than 255 chars.
 130    * Blah */
 131   alloc = list->n_icons + 16;
 132   list->icons = realloc (list->icons, alloc * sizeof (XdgIcon));
 133   while (fgets (line, 255, file) != NULL)
 134     {
 135       char *sep;
 136       if (line[0] == '#')
 137         continue;
 138
 139       sep = strchr (line, ':');
 140       if (sep == NULL)
 141         continue;
 142       *(sep++) = '\000';
 143       sep[strlen (sep) -1] = '\000';
 144       if (list->n_icons == alloc)
 145         {
 146           alloc <<= 1;
 147           list->icons = realloc (list->icons,
 148                                    alloc * sizeof (XdgIcon));
 149         }
 150       list->icons[list->n_icons].mime_type = strdup (line);
 151       list->icons[list->n_icons].icon_name = strdup (sep);
 152       list->n_icons++;
 153     }
 154   list->icons = realloc (list->icons,
 155                            list->n_icons * sizeof (XdgIcon));
 156
 157   fclose (file);
 158
 159   if (list->n_icons > 1)
 160     qsort (list->icons, list->n_icons,
 161            sizeof (XdgIcon), icon_entry_cmp);
 162 }
 163
 164 #ifdef NOT_USED_IN_GIO
 165
 166 void
 167 _xdg_mime_icon_list_dump (XdgIconList *list)
 168 {
 169   int i;
 170
 171   if (list->icons)
 172     {
 173       for (i = 0; i < list->n_icons; i++)
 174         {
 175           printf ("%s %s\n",
 176                   list->icons[i].mime_type,
 177                   list->icons[i].icon_name);
 178         }
 179     }
 180 }
 181
 182 #endif
 183