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Diffstat (limited to '')
| -rw-r--r-- | src/db/update/Archive.cxx | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/db/update/Archive.cxx b/src/db/update/Archive.cxx new file mode 100644 index 000000000..fc8f1fcbf --- /dev/null +++ b/src/db/update/Archive.cxx @@ -0,0 +1,167 @@ +/* + * 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 "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 "fs/AllocatedPath.hxx" +#include "storage/FileInfo.hxx" +#include "archive/ArchiveList.hxx" +#include "archive/ArchivePlugin.hxx" +#include "archive/ArchiveFile.hxx" +#include "archive/ArchiveVisitor.hxx" +#include "util/Error.hxx" +#include "Log.hxx" + +#include <string> + +#include <sys/stat.h> +#include <string.h> + +void +UpdateWalk::UpdateArchiveTree(Directory &directory, const char *name) +{ + const char *tmp = strchr(name, '/'); + if (tmp) { + const std::string child_name(name, tmp); + //add dir is not there already + db_lock(); + Directory *subdir = + directory.MakeChild(child_name.c_str()); + subdir->device = DEVICE_INARCHIVE; + db_unlock(); + + //create directories first + UpdateArchiveTree(*subdir, tmp + 1); + } else { + if (strlen(name) == 0) { + LogWarning(update_domain, + "archive returned directory only"); + return; + } + + //add file + db_lock(); + Song *song = directory.FindSong(name); + db_unlock(); + if (song == nullptr) { + song = Song::LoadFile(storage, name, directory); + if (song != nullptr) { + db_lock(); + directory.AddSong(song); + db_unlock(); + + modified = true; + FormatDefault(update_domain, "added %s/%s", + directory.GetPath(), name); + } + } + } +} + +class UpdateArchiveVisitor final : public ArchiveVisitor { + UpdateWalk &walk; + Directory *directory; + + public: + UpdateArchiveVisitor(UpdateWalk &_walk, Directory *_directory) + :walk(_walk), directory(_directory) {} + + virtual void VisitArchiveEntry(const char *path_utf8) override { + FormatDebug(update_domain, + "adding archive file: %s", path_utf8); + walk.UpdateArchiveTree(*directory, path_utf8); + } +}; + +/** + * Updates the file listing from an archive file. + * + * @param parent the parent directory the archive file resides in + * @param name the UTF-8 encoded base name of the archive file + * @param st stat() information on the archive file + * @param plugin the archive plugin which fits this archive type + */ +void +UpdateWalk::UpdateArchiveFile(Directory &parent, const char *name, + const FileInfo &info, + const ArchivePlugin &plugin) +{ + db_lock(); + Directory *directory = parent.FindChild(name); + db_unlock(); + + if (directory != nullptr && directory->mtime == info.mtime && + !walk_discard) + /* MPD has already scanned the archive, and it hasn't + changed since - don't consider updating it */ + return; + + const auto path_fs = storage.MapChildFS(parent.GetPath(), name); + if (path_fs.IsNull()) + /* not a local file: skip, because the archive API + supports only local files */ + return; + + /* open archive */ + Error error; + ArchiveFile *file = archive_file_open(&plugin, path_fs, error); + if (file == nullptr) { + LogError(error); + if (directory != nullptr) + editor.LockDeleteDirectory(directory); + return; + } + + FormatDebug(update_domain, "archive %s opened", path_fs.c_str()); + + if (directory == nullptr) { + FormatDebug(update_domain, + "creating archive directory: %s", name); + db_lock(); + directory = parent.CreateChild(name); + /* mark this directory as archive (we use device for + this) */ + directory->device = DEVICE_INARCHIVE; + db_unlock(); + } + + directory->mtime = info.mtime; + + UpdateArchiveVisitor visitor(*this, directory); + file->Visit(visitor); + file->Close(); +} + +bool +UpdateWalk::UpdateArchiveFile(Directory &directory, + const char *name, const char *suffix, + const FileInfo &info) +{ + const ArchivePlugin *plugin = archive_plugin_from_suffix(suffix); + if (plugin == nullptr) + return false; + + UpdateArchiveFile(directory, name, info, *plugin); + return true; +} |