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