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/*
* Copyright 2003-2017 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 "DetachedSong.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 "Log.hxx"
#include "util/AllocatedString.hxx"
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 == std::chrono::system_clock::to_time_t(info.mtime) && !walk_discard) {
/* not modified */
return nullptr;
}
editor.DeleteDirectory(directory);
modified = true;
}
directory = parent.MakeChild(name);
directory->mtime = std::chrono::system_clock::to_time_t(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;
Directory *contdir;
{
const ScopeDatabaseLock protect;
contdir = MakeDirectoryIfModified(directory, name, info);
if (contdir == nullptr)
/* not modified */
return true;
contdir->device = DEVICE_CONTAINER;
}
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;
}
try {
auto v = plugin.container_scan(pathname);
if (v.empty()) {
editor.LockDeleteDirectory(contdir);
return false;
}
for (auto &vtrack : v) {
Song *song = Song::NewFrom(std::move(vtrack),
*contdir);
// shouldn't be necessary but it's there..
song->mtime = std::chrono::system_clock::to_time_t(info.mtime);
FormatDefault(update_domain, "added %s/%s",
contdir->GetPath(), song->uri);
{
const ScopeDatabaseLock protect;
contdir->AddSong(song);
}
modified = true;
}
} catch (const std::runtime_error &e) {
editor.LockDeleteDirectory(contdir);
LogError(e);
return false;
}
return true;
}
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