src/queue_save.c

   1 /*
   2  * Copyright (C) 2003-2010 The Music Player Daemon Project
   3  * http://www.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 "config.h"
  21 #include "queue_save.h"
  22 #include "queue.h"
  23 #include "song.h"
  24 #include "uri.h"
  25 #include "database.h"
  26
  27 #include <stdlib.h>
  28
  29 void
  30 queue_save(FILE *fp, const struct queue *queue)
  31 {
  32         for (unsigned i = 0; i < queue_length(queue); i++) {
  33                 const struct song *song = queue_get(queue, i);
  34                 char *uri = song_get_uri(song);
  35
  36                 fprintf(fp, "%i:%s\n", i, uri);
  37                 g_free(uri);
  38         }
  39 }
  40
  41 static struct song *
  42 get_song(const char *uri)
  43 {
  44         struct song *song;
  45
  46         song = db_get_song(uri);
  47         if (song != NULL)
  48                 return song;
  49
  50         if (uri_has_scheme(uri))
  51                 return song_remote_new(uri);
  52
  53         return NULL;
  54 }
  55
  56 int
  57 queue_load_song(struct queue *queue, const char *line)
  58 {
  59         long ret;
  60         char *endptr;
  61         struct song *song;
  62
  63         if (queue_is_full(queue))
  64                 return -1;
  65
  66         ret = strtol(line, &endptr, 10);
  67         if (ret < 0 || *endptr != ':' || endptr[1] == 0) {
  68                 g_warning("Malformed playlist line in state file");
  69                 return -1;
  70         }
  71
  72         line = endptr + 1;
  73
  74         song = get_song(line);
  75         if (song == NULL)
  76                 return -1;
  77
  78         queue_append(queue, song);
  79         return ret;
  80 }