src/filelist.c

   1 /*
   2  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   3  * (c) 2008 Max Kellermann <max@duempel.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19
  20 #include "filelist.h"
  21 #include "libmpdclient.h"
  22
  23 #include <string.h>
  24 #include <assert.h>
  25
  26 struct filelist *
  27 filelist_new(const char *path)
  28 {
  29         struct filelist *filelist = g_malloc(sizeof(*filelist));
  30
  31         filelist->path = g_strdup(path);
  32         filelist->updated = FALSE;
  33         filelist->entries = g_ptr_array_new();
  34
  35         return filelist;
  36 }
  37
  38 void
  39 filelist_free(struct filelist *filelist)
  40 {
  41         guint i;
  42
  43         for (i = 0; i < filelist_length(filelist); ++i) {
  44                 struct filelist_entry *entry = filelist_get(filelist, i);
  45
  46                 if (entry->entity)
  47                         mpd_freeInfoEntity(entry->entity);
  48
  49                 g_free(entry);
  50         }
  51
  52         g_ptr_array_free(filelist->entries, TRUE);
  53         g_free(filelist->path);
  54         g_free(filelist);
  55 }
  56
  57 struct filelist_entry *
  58 filelist_append(struct filelist *filelist, struct mpd_InfoEntity *entity)
  59 {
  60         struct filelist_entry *entry = g_slice_alloc(sizeof(*entry));
  61
  62         entry->flags = 0;
  63         entry->entity = entity;
  64
  65         g_ptr_array_add(filelist->entries, entry);
  66
  67         return entry;
  68 }
  69
  70 struct filelist_entry *
  71 filelist_prepend(struct filelist *filelist, struct mpd_InfoEntity *entity)
  72 {
  73         struct filelist_entry *entry = filelist_append(filelist, entity);
  74
  75         /* this is very slow, but we should optimize screen_artist.c
  76            later so that this function can be removed, so I'm not in
  77            the mood to implement something better here */
  78
  79         if (!filelist_is_empty(filelist)) {
  80                 guint i;
  81
  82                 for (i = filelist_length(filelist) - 1; i > 0; --i)
  83                         g_ptr_array_index(filelist->entries, i) =
  84                                 filelist_get(filelist, i - 1);
  85
  86                 g_ptr_array_index(filelist->entries, 0) = entry;
  87         }
  88
  89         return entry;
  90 }
  91
  92 void
  93 filelist_move(struct filelist *filelist, struct filelist *from)
  94 {
  95         guint i;
  96
  97         for (i = 0; i < filelist_length(from); ++i)
  98                 g_ptr_array_add(filelist->entries,
  99                                 g_ptr_array_index(from->entries, i));
 100
 101         g_ptr_array_set_size(from->entries, 0);
 102 }
 103
 104 void
 105 filelist_sort(struct filelist *filelist, GCompareFunc compare_func)
 106 {
 107         g_ptr_array_sort(filelist->entries, compare_func);
 108 }
 109
 110 struct filelist_entry *
 111 filelist_find_song(struct filelist *fl, const struct mpd_song *song)
 112 {
 113         guint i;
 114
 115         assert(song != NULL);
 116
 117         for (i = 0; i < filelist_length(fl); ++i) {
 118                 struct filelist_entry *entry = filelist_get(fl, i);
 119                 mpd_InfoEntity *entity  = entry->entity;
 120
 121                 if (entity && entity->type == MPD_INFO_ENTITY_TYPE_SONG) {
 122                         struct mpd_song *song2 = entity->info.song;
 123
 124                         if (strcmp(song->file, song2->file) == 0)
 125                                 return entry;
 126                 }
 127         }
 128
 129         return NULL;
 130 }