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/*
* Copyright 2003-2021 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 "Walk.hxx"
#include "db/DatabaseLock.hxx"
#include "db/plugins/simple/Directory.hxx"
#include "storage/FileInfo.hxx"
Directory *
UpdateWalk::MakeVirtualDirectoryIfModified(Directory &parent, std::string_view name,
const StorageFileInfo &info,
unsigned virtual_device) noexcept
{
Directory *directory = parent.FindChild(name);
// directory exists already
if (directory != nullptr) {
if (directory->IsMount())
return nullptr;
if (directory->mtime == info.mtime &&
directory->device == virtual_device &&
!walk_discard) {
/* not modified */
return nullptr;
}
editor.DeleteDirectory(directory);
modified = true;
}
directory = parent.MakeChild(name);
directory->mtime = info.mtime;
directory->device = virtual_device;
return directory;
}
Directory *
UpdateWalk::LockMakeVirtualDirectoryIfModified(Directory &parent,
std::string_view name,
const StorageFileInfo &info,
unsigned virtual_device) noexcept
{
const ScopeDatabaseLock protect;
return MakeVirtualDirectoryIfModified(parent, name,
info, virtual_device);
}
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