ce49d99c2f
Since we switched from autotools to Meson in commit
94592c1406, we don't need to include
`config.h` early to properly enable large file support. Meson passes
the required macros on the compiler command line instead of defining
them in `config.h`.
This means we can include `config.h` at any time, whenever we want to
check its macros, and there are no ordering constraints.
159 lines
4.4 KiB
C++
159 lines
4.4 KiB
C++
/*
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* Copyright 2003-2018 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_UPDATE_WALK_HXX
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#define MPD_UPDATE_WALK_HXX
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#include "Config.hxx"
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#include "Editor.hxx"
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#include "util/Compiler.h"
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#include "config.h"
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#include <atomic>
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struct StorageFileInfo;
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struct Directory;
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struct ArchivePlugin;
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class ArchiveFile;
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class Storage;
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class ExcludeList;
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class UpdateWalk final {
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#ifdef ENABLE_ARCHIVE
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friend class UpdateArchiveVisitor;
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#endif
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const UpdateConfig config;
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bool walk_discard;
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bool modified;
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/**
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* Set to true by the main thread when the update thread shall
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* cancel as quickly as possible. Access to this flag is
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* unprotected.
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*/
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std::atomic_bool cancel;
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Storage &storage;
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DatabaseEditor editor;
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public:
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UpdateWalk(const UpdateConfig &_config,
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EventLoop &_loop, DatabaseListener &_listener,
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Storage &_storage) noexcept;
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/**
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* Cancel the current update and quit the Walk() method as
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* soon as possible.
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*/
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void Cancel() noexcept {
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cancel = true;
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}
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/**
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* Returns true if the database was modified.
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*/
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bool Walk(Directory &root, const char *path, bool discard) noexcept;
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private:
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gcc_pure
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bool SkipSymlink(const Directory *directory,
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const char *utf8_name) const noexcept;
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void RemoveExcludedFromDirectory(Directory &directory,
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const ExcludeList &exclude_list) noexcept;
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void PurgeDeletedFromDirectory(Directory &directory) noexcept;
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void UpdateSongFile2(Directory &directory,
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const char *name, const char *suffix,
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const StorageFileInfo &info) noexcept;
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bool UpdateSongFile(Directory &directory,
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const char *name, const char *suffix,
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const StorageFileInfo &info) noexcept;
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bool UpdateContainerFile(Directory &directory,
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const char *name, const char *suffix,
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const StorageFileInfo &info) noexcept;
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#ifdef ENABLE_ARCHIVE
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void UpdateArchiveTree(ArchiveFile &archive, Directory &parent,
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const char *name) noexcept;
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bool UpdateArchiveFile(Directory &directory,
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const char *name, const char *suffix,
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const StorageFileInfo &info) noexcept;
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void UpdateArchiveFile(Directory &directory, const char *name,
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const StorageFileInfo &info,
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const ArchivePlugin &plugin) noexcept;
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#else
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bool UpdateArchiveFile(gcc_unused Directory &directory,
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gcc_unused const char *name,
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gcc_unused const char *suffix,
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gcc_unused const StorageFileInfo &info) noexcept {
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return false;
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}
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#endif
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bool UpdatePlaylistFile(Directory &directory,
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const char *name, const char *suffix,
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const StorageFileInfo &info) noexcept;
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bool UpdateRegularFile(Directory &directory,
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const char *name, const StorageFileInfo &info) noexcept;
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void UpdateDirectoryChild(Directory &directory,
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const ExcludeList &exclude_list,
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const char *name,
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const StorageFileInfo &info) noexcept;
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bool UpdateDirectory(Directory &directory,
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const ExcludeList &exclude_list,
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const StorageFileInfo &info) noexcept;
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/**
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* Create the specified directory object if it does not exist
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* already or if the #StorageFileInfo object indicates that it has been
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* modified since the last update. Returns nullptr when it
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* exists already and is unmodified.
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*
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* The caller must lock the database.
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*/
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Directory *MakeDirectoryIfModified(Directory &parent, const char *name,
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const StorageFileInfo &info) noexcept;
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Directory *DirectoryMakeChildChecked(Directory &parent,
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const char *uri_utf8,
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const char *name_utf8) noexcept;
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Directory *DirectoryMakeUriParentChecked(Directory &root,
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const char *uri) noexcept;
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void UpdateUri(Directory &root, const char *uri) noexcept;
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};
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#endif
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