src/playlist.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.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
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "playlist.h"
  21
  22 #include <string.h>
  23
  24 void
  25 playlist_init(struct mpdclient_playlist *playlist)
  26 {
  27         playlist->version = 0;
  28         playlist->list = g_ptr_array_sized_new(1024);
  29 }
  30
  31 void
  32 playlist_clear(struct mpdclient_playlist *playlist)
  33 {
  34         guint i;
  35
  36         playlist->version = 0;
  37
  38         for (i = 0; i < playlist->list->len; ++i) {
  39                 struct mpd_song *song = playlist_get(playlist, i);
  40
  41                 mpd_song_free(song);
  42         }
  43
  44         g_ptr_array_set_size(playlist->list, 0);
  45 }
  46
  47 gint
  48 mpdclient_playlist_free(struct mpdclient_playlist *playlist)
  49 {
  50         if (playlist->list != NULL) {
  51                 playlist_clear(playlist);
  52                 g_ptr_array_free(playlist->list, TRUE);
  53         }
  54
  55         memset(playlist, 0, sizeof(*playlist));
  56         return 0;
  57 }
  58
  59 const struct mpd_song *
  60 playlist_get_song(const struct mpdclient_playlist *playlist, gint idx)
  61 {
  62         if (idx < 0 || (guint)idx >= playlist_length(playlist))
  63                 return NULL;
  64
  65         return playlist_get(playlist, idx);
  66 }
  67
  68 const struct mpd_song *
  69 playlist_lookup_song(const struct mpdclient_playlist *playlist, unsigned id)
  70 {
  71         for (guint i = 0; i < playlist_length(playlist); ++i) {
  72                 struct mpd_song *song = playlist_get(playlist, i);
  73                 if (mpd_song_get_id(song) == id)
  74                         return song;
  75         }
  76
  77         return NULL;
  78 }
  79
  80 gint
  81 playlist_get_index(const struct mpdclient_playlist *playlist,
  82                    const struct mpd_song *song)
  83 {
  84         for (guint i = 0; i < playlist_length(playlist); ++i) {
  85                 if (playlist_get(playlist, i) == song)
  86                         return (gint)i;
  87         }
  88
  89         return -1;
  90 }
  91
  92 gint
  93 playlist_get_index_from_id(const struct mpdclient_playlist *playlist,
  94                            unsigned id)
  95 {
  96         for (guint i = 0; i < playlist_length(playlist); ++i) {
  97                 const struct mpd_song *song = playlist_get(playlist, i);
  98                 if (mpd_song_get_id(song) == id)
  99                         return (gint)i;
 100         }
 101
 102         return -1;
 103 }
 104
 105 gint
 106 playlist_get_index_from_file(const struct mpdclient_playlist *playlist,
 107                              const gchar *filename)
 108 {
 109         for (guint i = 0; i < playlist_length(playlist); ++i) {
 110                 const struct mpd_song *song = playlist_get(playlist, i);
 111
 112                 if (strcmp(mpd_song_get_uri(song), filename) == 0)
 113                         return (gint)i;
 114         }
 115
 116         return -1;
 117 }
 118
 119 gint
 120 playlist_get_id_from_uri(const struct mpdclient_playlist *playlist,
 121                          const gchar *uri)
 122 {
 123         for (guint i = 0; i < playlist_length(playlist); ++i) {
 124                 const struct mpd_song *song = playlist_get(playlist, i);
 125
 126                 if (strcmp(mpd_song_get_uri(song), uri) == 0)
 127                         return mpd_song_get_id(song);
 128         }
 129
 130         return -1;
 131 }