diff options
Diffstat (limited to 'src/PlaylistSong.cxx')
| -rw-r--r-- | src/PlaylistSong.cxx | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/PlaylistSong.cxx b/src/PlaylistSong.cxx new file mode 100644 index 00000000..4df4d22d --- /dev/null +++ b/src/PlaylistSong.cxx @@ -0,0 +1,177 @@ +/* + * Copyright (C) 2003-2013 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "PlaylistSong.hxx" +#include "Mapper.hxx" +#include "DatabasePlugin.hxx" +#include "DatabaseGlue.hxx" +#include "ls.hxx" +#include "tag.h" +#include "fs/Path.hxx" + +extern "C" { +#include "song.h" +#include "uri.h" +} + +#include <glib.h> + +#include <assert.h> +#include <string.h> + +static void +merge_song_metadata(struct song *dest, const struct song *base, + const struct song *add) +{ + dest->tag = base->tag != NULL + ? (add->tag != NULL + ? tag_merge(base->tag, add->tag) + : tag_dup(base->tag)) + : (add->tag != NULL + ? tag_dup(add->tag) + : NULL); + + dest->mtime = base->mtime; + dest->start_ms = add->start_ms; + dest->end_ms = add->end_ms; +} + +static struct song * +apply_song_metadata(struct song *dest, const struct song *src) +{ + struct song *tmp; + + assert(dest != NULL); + assert(src != NULL); + + if (src->tag == NULL && src->start_ms == 0 && src->end_ms == 0) + return dest; + + if (song_in_database(dest)) { + const Path &path_fs = map_song_fs(dest); + if (path_fs.IsNull()) + return dest; + + std::string path_utf8 = path_fs.ToUTF8(); + if (path_utf8.empty()) + path_utf8 = path_fs.c_str(); + + tmp = song_file_new(path_utf8.c_str(), NULL); + + merge_song_metadata(tmp, dest, src); + } else { + tmp = song_file_new(dest->uri, NULL); + merge_song_metadata(tmp, dest, src); + } + + if (dest->tag != NULL && dest->tag->time > 0 && + src->start_ms > 0 && src->end_ms == 0 && + src->start_ms / 1000 < (unsigned)dest->tag->time) + /* the range is open-ended, and the playlist plugin + did not know the total length of the song file + (e.g. last track on a CUE file); fix it up here */ + tmp->tag->time = dest->tag->time - src->start_ms / 1000; + + song_free(dest); + return tmp; +} + +static struct song * +playlist_check_load_song(const struct song *song, const char *uri, bool secure) +{ + struct song *dest; + + if (uri_has_scheme(uri)) { + dest = song_remote_new(uri); + } else if (g_path_is_absolute(uri) && secure) { + dest = song_file_load(uri, NULL); + if (dest == NULL) + return NULL; + } else { + const Database *db = GetDatabase(nullptr); + if (db == nullptr) + return nullptr; + + struct song *tmp = db->GetSong(uri, nullptr); + if (tmp == NULL) + /* not found in database */ + return NULL; + + dest = song_dup_detached(tmp); + db->ReturnSong(tmp); + } + + return apply_song_metadata(dest, song); +} + +struct song * +playlist_check_translate_song(struct song *song, const char *base_uri, + bool secure) +{ + if (song_in_database(song)) + /* already ok */ + return song; + + const char *uri = song->uri; + + if (uri_has_scheme(uri)) { + if (uri_supported_scheme(uri)) + /* valid remote song */ + return song; + else { + /* unsupported remote song */ + song_free(song); + return NULL; + } + } + + if (base_uri != NULL && strcmp(base_uri, ".") == 0) + /* g_path_get_dirname() returns "." when there is no + directory name in the given path; clear that now, + because it would break the database lookup + functions */ + base_uri = NULL; + + if (g_path_is_absolute(uri)) { + /* XXX fs_charset vs utf8? */ + const char *suffix = map_to_relative_path(uri); + assert(suffix != NULL); + + if (suffix != uri) + uri = suffix; + else if (!secure) { + /* local files must be relative to the music + directory when "secure" is enabled */ + song_free(song); + return NULL; + } + + base_uri = NULL; + } + + char *allocated = NULL; + if (base_uri != NULL) + uri = allocated = g_build_filename(base_uri, uri, NULL); + + struct song *dest = playlist_check_load_song(song, uri, secure); + song_free(song); + g_free(allocated); + return dest; +} |