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      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 
    184