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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" /* must be first for large file support */
#include "Song.hxx"
#include "DetachedSong.hxx"
#include "util/UriUtil.hxx"
#include "Directory.hxx"
#include "Mapper.hxx"
#include "fs/AllocatedPath.hxx"
#include "fs/Traits.hxx"
#include "fs/FileSystem.hxx"
#include "DecoderList.hxx"
#include "tag/Tag.hxx"
#include "tag/TagBuilder.hxx"
#include "tag/TagHandler.hxx"
#include "tag/TagId3.hxx"
#include "tag/ApeTag.hxx"
#include "TagFile.hxx"
#include "TagStream.hxx"
#include <assert.h>
#include <string.h>
#include <sys/stat.h>
Song *
Song::LoadFile(const char *path_utf8, Directory *parent)
{
Song *song;
bool ret;
assert((parent == nullptr) == PathTraitsUTF8::IsAbsolute(path_utf8));
assert(!uri_has_scheme(path_utf8));
assert(strchr(path_utf8, '\n') == nullptr);
song = NewFile(path_utf8, parent);
//in archive ?
if (parent != nullptr && parent->device == DEVICE_INARCHIVE) {
ret = song->UpdateFileInArchive();
} else {
ret = song->UpdateFile();
}
if (!ret) {
song->Free();
return nullptr;
}
return song;
}
/**
* Attempts to load APE or ID3 tags from the specified file.
*/
static bool
tag_scan_fallback(Path path,
const struct tag_handler *handler, void *handler_ctx)
{
return tag_ape_scan2(path, handler, handler_ctx) ||
tag_id3_scan(path, handler, handler_ctx);
}
bool
Song::UpdateFile()
{
const auto path_fs = map_song_fs(*this);
if (path_fs.IsNull())
return false;
struct stat st;
if (!StatFile(path_fs, st) || !S_ISREG(st.st_mode))
return false;
TagBuilder tag_builder;
if (!tag_file_scan(path_fs,
full_tag_handler, &tag_builder))
return false;
if (tag_builder.IsEmpty())
tag_scan_fallback(path_fs, &full_tag_handler,
&tag_builder);
mtime = st.st_mtime;
delete tag;
tag = tag_builder.CommitNew();
return true;
}
bool
Song::UpdateFileInArchive()
{
/* check if there's a suffix and a plugin */
const char *suffix = uri_get_suffix(uri);
if (suffix == nullptr)
return false;
if (!decoder_plugins_supports_suffix(suffix))
return false;
const auto path_fs = map_song_fs(*this);
if (path_fs.IsNull())
return false;
TagBuilder tag_builder;
if (!tag_stream_scan(path_fs.c_str(), full_tag_handler, &tag_builder))
return false;
delete tag;
tag = tag_builder.CommitNew();
return true;
}
bool
DetachedSong::Update()
{
if (IsAbsoluteFile()) {
const AllocatedPath path_fs =
AllocatedPath::FromUTF8(uri.c_str());
struct stat st;
if (!StatFile(path_fs, st) || !S_ISREG(st.st_mode))
return false;
TagBuilder tag_builder;
if (!tag_file_scan(path_fs, full_tag_handler, &tag_builder))
return false;
if (tag_builder.IsEmpty())
tag_scan_fallback(path_fs, &full_tag_handler,
&tag_builder);
mtime = st.st_mtime;
tag_builder.Commit(tag);
return true;
} else if (IsRemote()) {
TagBuilder tag_builder;
if (!tag_stream_scan(uri.c_str(), full_tag_handler,
&tag_builder))
return false;
mtime = 0;
tag_builder.Commit(tag);
return true;
} else
// TODO: implement
return false;
}
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