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/*
* Copyright (C) 2003-2015 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 "Walk.hxx"
#include "UpdateDomain.hxx"
#include "db/DatabaseLock.hxx"
#include "db/plugins/simple/Directory.hxx"
#include "db/plugins/simple/Song.hxx"
#include "storage/StorageInterface.hxx"
#include "decoder/DecoderPlugin.hxx"
#include "decoder/DecoderList.hxx"
#include "fs/AllocatedPath.hxx"
#include "storage/FileInfo.hxx"
#include "tag/TagHandler.hxx"
#include "tag/TagBuilder.hxx"
#include "Log.hxx"
#include <sys/stat.h>
Directory *
UpdateWalk::MakeDirectoryIfModified(Directory &parent, const char *name,
const StorageFileInfo &info)
{
Directory *directory = parent.FindChild(name);
// directory exists already
if (directory != nullptr) {
if (directory->IsMount())
return nullptr;
if (directory->mtime == info.mtime && !walk_discard) {
/* not modified */
return nullptr;
}
editor.DeleteDirectory(directory);
modified = true;
}
directory = parent.MakeChild(name);
directory->mtime = info.mtime;
return directory;
}
static bool
SupportsContainerSuffix(const DecoderPlugin &plugin, const char *suffix)
{
return plugin.container_scan != nullptr &&
plugin.SupportsSuffix(suffix);
}
bool
UpdateWalk::UpdateContainerFile(Directory &directory,
const char *name, const char *suffix,
const StorageFileInfo &info)
{
const DecoderPlugin *_plugin = decoder_plugins_find([suffix](const DecoderPlugin &plugin){
return SupportsContainerSuffix(plugin, suffix);
});
if (_plugin == nullptr)
return false;
const DecoderPlugin &plugin = *_plugin;
db_lock();
Directory *contdir = MakeDirectoryIfModified(directory, name, info);
if (contdir == nullptr) {
/* not modified */
db_unlock();
return true;
}
contdir->device = DEVICE_CONTAINER;
db_unlock();
const auto pathname = storage.MapFS(contdir->GetPath());
if (pathname.IsNull()) {
/* not a local file: skip, because the container API
supports only local files */
editor.LockDeleteDirectory(contdir);
return false;
}
char *vtrack;
unsigned int tnum = 0;
TagBuilder tag_builder;
while ((vtrack = plugin.container_scan(pathname, ++tnum)) != nullptr) {
Song *song = Song::NewFile(vtrack, *contdir);
// shouldn't be necessary but it's there..
song->mtime = info.mtime;
const auto vtrack_fs = AllocatedPath::FromUTF8(vtrack);
// TODO: check vtrack_fs.IsNull()
const auto child_path_fs = AllocatedPath::Build(pathname,
vtrack_fs);
plugin.ScanFile(child_path_fs,
add_tag_handler, &tag_builder);
tag_builder.Commit(song->tag);
db_lock();
contdir->AddSong(song);
db_unlock();
modified = true;
FormatDefault(update_domain, "added %s/%s",
directory.GetPath(), vtrack);
delete[] vtrack;
}
if (tnum == 1) {
editor.LockDeleteDirectory(contdir);
return false;
} else
return true;
}
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