base/third_party/xdg_mime/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 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, write to the
  23  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24  * Boston, MA 02111-1307, USA.
  25  */
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include <config.h>
  29 #endif
  30
  31 #include "xdgmimeicon.h"
  32 #include "xdgmimeint.h"
  33 #include <stdlib.h>
  34 #include <stdio.h>
  35 #include <assert.h>
  36 #include <string.h>
  37 #include <fnmatch.h>
  38
  39 #ifndef FALSE
  40 #define FALSE   (0)
  41 #endif
  42
  43 #ifndef TRUE
  44 #define TRUE    (!FALSE)
  45 #endif
  46
  47 typedef struct XdgIcon XdgIcon;
  48
  49 struct XdgIcon
  50 {
  51   char *mime_type;
  52   char *icon_name;
  53 };
  54
  55 struct XdgIconList
  56 {
  57   struct XdgIcon *icons;
  58   int n_icons;
  59 };
  60
  61 XdgIconList *
  62 _xdg_mime_icon_list_new (void)
  63 {
  64   XdgIconList *list;
  65
  66   list = malloc (sizeof (XdgIconList));
  67
  68   list->icons = NULL;
  69   list->n_icons = 0;
  70
  71   return list;
  72 }
  73
  74 void
  75 _xdg_mime_icon_list_free (XdgIconList *list)
  76 {
  77   int i;
  78
  79   if (list->icons)
  80     {
  81       for (i = 0; i < list->n_icons; i++)
  82         {
  83           free (list->icons[i].mime_type);
  84           free (list->icons[i].icon_name);
  85         }
  86       free (list->icons);
  87     }
  88   free (list);
  89 }
  90
  91 static int
  92 icon_entry_cmp (const void *v1, const void *v2)
  93 {
  94   return strcmp (((XdgIcon *)v1)->mime_type, ((XdgIcon *)v2)->mime_type);
  95 }
  96
  97 const char  *
  98 _xdg_mime_icon_list_lookup (XdgIconList *list,
  99                             const char  *mime_type)
 100 {
 101   XdgIcon *entry;
 102   XdgIcon key;
 103
 104   if (list->n_icons > 0)
 105     {
 106       key.mime_type = (char *)mime_type;
 107       key.icon_name = NULL;
 108
 109       entry = bsearch (&key, list->icons, list->n_icons,
 110                        sizeof (XdgIcon), icon_entry_cmp);
 111       if (entry)
 112         return entry->icon_name;
 113     }
 114
 115   return NULL;
 116 }
 117
 118 void
 119 _xdg_mime_icon_read_from_file (XdgIconList *list,
 120                                const char   *file_name)
 121 {
 122   FILE *file;
 123   char line[255];
 124   int alloc;
 125
 126   file = fopen (file_name, "r");
 127
 128   if (file == NULL)
 129     return;
 130
 131   /* FIXME: Not UTF-8 safe.  Doesn't work if lines are greater than 255 chars.
 132    * Blah */
 133   alloc = list->n_icons + 16;
 134   list->icons = realloc (list->icons, alloc * sizeof (XdgIcon));
 135   while (fgets (line, 255, file) != NULL)
 136     {
 137       char *sep;
 138       if (line[0] == '#')
 139         continue;
 140
 141       sep = strchr (line, ':');
 142       if (sep == NULL)
 143         continue;
 144       *(sep++) = '\000';
 145       sep[strlen (sep) -1] = '\000';
 146       if (list->n_icons == alloc)
 147         {
 148           alloc <<= 1;
 149           list->icons = realloc (list->icons,
 150                                    alloc * sizeof (XdgIcon));
 151         }
 152       list->icons[list->n_icons].mime_type = strdup (line);
 153       list->icons[list->n_icons].icon_name = strdup (sep);
 154       list->n_icons++;
 155     }
 156   list->icons = realloc (list->icons,
 157                            list->n_icons * sizeof (XdgIcon));
 158
 159   fclose (file);
 160
 161   if (list->n_icons > 1)
 162     qsort (list->icons, list->n_icons,
 163            sizeof (XdgIcon), icon_entry_cmp);
 164 }
 165
 166
 167 void
 168 _xdg_mime_icon_list_dump (XdgIconList *list)
 169 {
 170   int i;
 171
 172   if (list->icons)
 173     {
 174       for (i = 0; i < list->n_icons; i++)
 175         {
 176           printf ("%s %s\n",
 177                   list->icons[i].mime_type,
 178                   list->icons[i].icon_name);
 179         }
 180     }
 181 }
 182
 183