src/filelist.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 "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->entries = g_ptr_array_new();
  33
  34         return filelist;
  35 }
  36
  37 void
  38 filelist_free(struct filelist *filelist)
  39 {
  40         guint i;
  41
  42         for (i = 0; i < filelist_length(filelist); ++i) {
  43                 struct filelist_entry *entry = filelist_get(filelist, i);
  44
  45                 if (entry->entity)
  46                         mpd_freeInfoEntity(entry->entity);
  47
  48                 g_slice_free(struct filelist_entry, entry);
  49         }
  50
  51         g_ptr_array_free(filelist->entries, TRUE);
  52         g_free(filelist->path);
  53         g_free(filelist);
  54 }
  55
  56 struct filelist_entry *
  57 filelist_append(struct filelist *filelist, struct mpd_InfoEntity *entity)
  58 {
  59         struct filelist_entry *entry = g_slice_new(struct filelist_entry);
  60
  61         entry->flags = 0;
  62         entry->entity = entity;
  63
  64         g_ptr_array_add(filelist->entries, entry);
  65
  66         return entry;
  67 }
  68
  69 struct filelist_entry *
  70 filelist_prepend(struct filelist *filelist, struct mpd_InfoEntity *entity)
  71 {
  72         struct filelist_entry *entry = filelist_append(filelist, entity);
  73
  74         /* this is very slow, but we should optimize screen_artist.c
  75            later so that this function can be removed, so I'm not in
  76            the mood to implement something better here */
  77
  78         if (!filelist_is_empty(filelist)) {
  79                 guint i;
  80
  81                 for (i = filelist_length(filelist) - 1; i > 0; --i)
  82                         g_ptr_array_index(filelist->entries, i) =
  83                                 filelist_get(filelist, i - 1);
  84
  85                 g_ptr_array_index(filelist->entries, 0) = entry;
  86         }
  87
  88         return entry;
  89 }
  90
  91 void
  92 filelist_move(struct filelist *filelist, struct filelist *from)
  93 {
  94         guint i;
  95
  96         for (i = 0; i < filelist_length(from); ++i)
  97                 g_ptr_array_add(filelist->entries,
  98                                 g_ptr_array_index(from->entries, i));
  99
 100         g_ptr_array_set_size(from->entries, 0);
 101 }
 102
 103 static gint
 104 filelist_compare_indirect(gconstpointer ap, gconstpointer bp, gpointer data)
 105 {
 106         GCompareFunc compare_func = data;
 107         gconstpointer a = *(const gconstpointer*)ap;
 108         gconstpointer b = *(const gconstpointer*)bp;
 109
 110         return compare_func(a, b);
 111 }
 112
 113 void
 114 filelist_sort(struct filelist *filelist, GCompareFunc compare_func)
 115 {
 116         g_ptr_array_sort_with_data(filelist->entries,
 117                                    filelist_compare_indirect,
 118                                    compare_func);
 119 }
 120
 121 int
 122 filelist_find_song(struct filelist *fl, const struct mpd_song *song)
 123 {
 124         guint i;
 125
 126         assert(song != NULL);
 127
 128         for (i = 0; i < filelist_length(fl); ++i) {
 129                 struct filelist_entry *entry = filelist_get(fl, i);
 130                 mpd_InfoEntity *entity  = entry->entity;
 131
 132                 if (entity && entity->type == MPD_INFO_ENTITY_TYPE_SONG) {
 133                         struct mpd_song *song2 = entity->info.song;
 134
 135                         if (strcmp(song->file, song2->file) == 0)
 136                                 return i;
 137                 }
 138         }
 139
 140         return -1;
 141 }
 142
 143 int
 144 filelist_find_directory(struct filelist *filelist, const char *name)
 145 {
 146         guint i;
 147
 148         assert(name != NULL);
 149
 150         for (i = 0; i < filelist_length(filelist); ++i) {
 151                 struct filelist_entry *entry = filelist_get(filelist, i);
 152                 mpd_InfoEntity *entity  = entry->entity;
 153
 154                 if (entity && entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY &&
 155                     strcmp(entity->info.directory->path, name) == 0)
 156                         return i;
 157         }
 158
 159         return -1;
 160 }