xdgmime-source/src/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  * SPDX-License-Identifier: LGPL-2.1-or-later or AFL-2.0
   9  */
  10
  11 #ifdef HAVE_CONFIG_H
  12 #include <config.h>
  13 #endif
  14
  15 #include "xdgmimeicon.h"
  16 #include "xdgmimeint.h"
  17 #include <stdlib.h>
  18 #include <stdio.h>
  19 #include <assert.h>
  20 #include <string.h>
  21 #include <fnmatch.h>
  22
  23 #ifndef FALSE
  24 #define FALSE   (0)
  25 #endif
  26
  27 #ifndef TRUE
  28 #define TRUE    (!FALSE)
  29 #endif
  30
  31 typedef struct XdgIcon XdgIcon;
  32
  33 struct XdgIcon
  34 {
  35   char *mime_type;
  36   char *icon_name;
  37 };
  38
  39 struct XdgIconList
  40 {
  41   struct XdgIcon *icons;
  42   int n_icons;
  43 };
  44
  45 XdgIconList *
  46 _xdg_mime_icon_list_new (void)
  47 {
  48   XdgIconList *list;
  49
  50   list = malloc (sizeof (XdgIconList));
  51
  52   list->icons = NULL;
  53   list->n_icons = 0;
  54
  55   return list;
  56 }
  57
  58 void
  59 _xdg_mime_icon_list_free (XdgIconList *list)
  60 {
  61   int i;
  62
  63   if (list->icons)
  64     {
  65       for (i = 0; i < list->n_icons; i++)
  66         {
  67           free (list->icons[i].mime_type);
  68           free (list->icons[i].icon_name);
  69         }
  70       free (list->icons);
  71     }
  72   free (list);
  73 }
  74
  75 static int
  76 icon_entry_cmp (const void *v1, const void *v2)
  77 {
  78   return strcmp (((XdgIcon *)v1)->mime_type, ((XdgIcon *)v2)->mime_type);
  79 }
  80
  81 const char  *
  82 _xdg_mime_icon_list_lookup (XdgIconList *list,
  83                             const char  *mime_type)
  84 {
  85   XdgIcon *entry;
  86   XdgIcon key;
  87
  88   if (list->n_icons > 0)
  89     {
  90       key.mime_type = (char *)mime_type;
  91       key.icon_name = NULL;
  92
  93       entry = bsearch (&key, list->icons, list->n_icons,
  94                        sizeof (XdgIcon), icon_entry_cmp);
  95       if (entry)
  96         return entry->icon_name;
  97     }
  98
  99   return NULL;
 100 }
 101
 102 void
 103 _xdg_mime_icon_read_from_file (XdgIconList *list,
 104                                const char   *file_name)
 105 {
 106   FILE *file;
 107   char line[255];
 108   int alloc;
 109
 110   file = fopen (file_name, "r");
 111
 112   if (file == NULL)
 113     return;
 114
 115   /* FIXME: Not UTF-8 safe.  Doesn't work if lines are greater than 255 chars.
 116    * Blah */
 117   alloc = list->n_icons + 16;
 118   list->icons = realloc (list->icons, alloc * sizeof (XdgIcon));
 119   while (fgets (line, 255, file) != NULL)
 120     {
 121       char *sep;
 122       if (line[0] == '#')
 123         continue;
 124
 125       sep = strchr (line, ':');
 126       if (sep == NULL)
 127         continue;
 128       *(sep++) = '\000';
 129       sep[strlen (sep) -1] = '\000';
 130       if (list->n_icons == alloc)
 131         {
 132           alloc <<= 1;
 133           list->icons = realloc (list->icons,
 134                                    alloc * sizeof (XdgIcon));
 135         }
 136       list->icons[list->n_icons].mime_type = strdup (line);
 137       list->icons[list->n_icons].icon_name = strdup (sep);
 138       list->n_icons++;
 139     }
 140   list->icons = realloc (list->icons,
 141                            list->n_icons * sizeof (XdgIcon));
 142
 143   fclose (file);
 144
 145   if (list->n_icons > 1)
 146     qsort (list->icons, list->n_icons,
 147            sizeof (XdgIcon), icon_entry_cmp);
 148 }
 149
 150
 151 void
 152 _xdg_mime_icon_list_dump (XdgIconList *list)
 153 {
 154   int i;
 155
 156   if (list->icons)
 157     {
 158       for (i = 0; i < list->n_icons; i++)
 159         {
 160           printf ("%s %s\n",
 161                   list->icons[i].mime_type,
 162                   list->icons[i].icon_name);
 163         }
 164     }
 165 }
 166
 167