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-rw-r--r--src/db/update/Archive.cxx167
1 files changed, 167 insertions, 0 deletions
diff --git a/src/db/update/Archive.cxx b/src/db/update/Archive.cxx
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+++ b/src/db/update/Archive.cxx
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+/*
+ * 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;
+}