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/*
* Copyright (C) 2003-2014 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 "DatabaseSong.hxx"
#include "ls.hxx"
#include "tag/Tag.hxx"
#include "tag/TagBuilder.hxx"
#include "fs/AllocatedPath.hxx"
#include "fs/Traits.hxx"
#include "util/UriUtil.hxx"
#include "util/Error.hxx"
#include "DetachedSong.hxx"
#include <assert.h>
#include <string.h>
static void
merge_song_metadata(DetachedSong &dest, const DetachedSong &base,
const DetachedSong &add)
{
{
TagBuilder builder(add.GetTag());
builder.Complement(base.GetTag());
dest.SetTag(builder.Commit());
}
dest.SetLastModified(base.GetLastModified());
dest.SetStartMS(add.GetStartMS());
dest.SetEndMS(add.GetEndMS());
}
static DetachedSong *
apply_song_metadata(DetachedSong *dest, const DetachedSong &src)
{
assert(dest != nullptr);
if (!src.GetTag().IsDefined() &&
src.GetStartMS() == 0 && src.GetEndMS() == 0)
return dest;
DetachedSong *tmp = new DetachedSong(dest->GetURI());
merge_song_metadata(*tmp, *dest, src);
if (dest->GetTag().IsDefined() && dest->GetTag().time > 0 &&
src.GetStartMS() > 0 && src.GetEndMS() == 0 &&
src.GetStartMS() / 1000 < (unsigned)dest->GetTag().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->WritableTag().time =
dest->GetTag().time - src.GetStartMS() / 1000;
delete dest;
return tmp;
}
static DetachedSong *
playlist_check_load_song(const DetachedSong *song, const char *uri)
{
DetachedSong *dest;
if (uri_has_scheme(uri)) {
dest = new DetachedSong(uri);
} else if (PathTraitsUTF8::IsAbsolute(uri)) {
dest = new DetachedSong(uri);
if (!dest->Update()) {
delete dest;
return nullptr;
}
} else {
dest = DatabaseDetachSong(uri, IgnoreError());
if (dest == nullptr)
return nullptr;
}
return apply_song_metadata(dest, *song);
}
DetachedSong *
playlist_check_translate_song(DetachedSong *song, const char *base_uri,
bool secure)
{
const char *uri = song->GetURI();
if (uri_has_scheme(uri)) {
if (uri_supported_scheme(uri))
/* valid remote song */
return song;
else {
/* unsupported remote song */
delete song;
return nullptr;
}
}
if (base_uri != nullptr && strcmp(base_uri, ".") == 0)
/* PathTraitsUTF8::GetParent() returns "." when there
is no directory name in the given path; clear that
now, because it would break the database lookup
functions */
base_uri = nullptr;
if (PathTraitsUTF8::IsAbsolute(uri)) {
/* XXX fs_charset vs utf8? */
const char *suffix = map_to_relative_path(uri);
assert(suffix != nullptr);
if (suffix != uri)
uri = suffix;
else if (!secure) {
/* local files must be relative to the music
directory when "secure" is enabled */
delete song;
return nullptr;
}
base_uri = nullptr;
}
if (base_uri != nullptr) {
song->SetURI(PathTraitsUTF8::Build(base_uri, uri));
/* repeat the above checks */
return playlist_check_translate_song(song, nullptr, secure);
}
DetachedSong *dest = playlist_check_load_song(song, uri);
delete song;
return dest;
}
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