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-rw-r--r--src/DirectorySave.cxx180
1 files changed, 180 insertions, 0 deletions
diff --git a/src/DirectorySave.cxx b/src/DirectorySave.cxx
new file mode 100644
index 000000000..6a5efb058
--- /dev/null
+++ b/src/DirectorySave.cxx
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2003-2013 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"
+#include "DirectorySave.hxx"
+#include "Directory.hxx"
+#include "song.h"
+#include "SongSave.hxx"
+#include "PlaylistDatabase.hxx"
+#include "TextFile.hxx"
+
+#include <assert.h>
+#include <string.h>
+
+#define DIRECTORY_DIR "directory: "
+#define DIRECTORY_MTIME "mtime: "
+#define DIRECTORY_BEGIN "begin: "
+#define DIRECTORY_END "end: "
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+directory_quark(void)
+{
+ return g_quark_from_static_string("directory");
+}
+
+void
+directory_save(FILE *fp, const Directory *directory)
+{
+ if (!directory->IsRoot()) {
+ fprintf(fp, DIRECTORY_MTIME "%lu\n",
+ (unsigned long)directory->mtime);
+
+ fprintf(fp, "%s%s\n", DIRECTORY_BEGIN, directory->GetPath());
+ }
+
+ Directory *cur;
+ directory_for_each_child(cur, directory) {
+ char *base = g_path_get_basename(cur->path);
+
+ fprintf(fp, DIRECTORY_DIR "%s\n", base);
+ g_free(base);
+
+ directory_save(fp, cur);
+
+ if (ferror(fp))
+ return;
+ }
+
+ struct song *song;
+ directory_for_each_song(song, directory)
+ song_save(fp, song);
+
+ playlist_vector_save(fp, directory->playlists);
+
+ if (!directory->IsRoot())
+ fprintf(fp, DIRECTORY_END "%s\n", directory->GetPath());
+}
+
+static Directory *
+directory_load_subdir(TextFile &file, Directory *parent, const char *name,
+ GError **error_r)
+{
+ bool success;
+
+ if (parent->FindChild(name) != nullptr) {
+ g_set_error(error_r, directory_quark(), 0,
+ "Duplicate subdirectory '%s'", name);
+ return NULL;
+ }
+
+ Directory *directory = parent->CreateChild(name);
+
+ const char *line = file.ReadLine();
+ if (line == NULL) {
+ g_set_error(error_r, directory_quark(), 0,
+ "Unexpected end of file");
+ directory->Delete();
+ return NULL;
+ }
+
+ if (g_str_has_prefix(line, DIRECTORY_MTIME)) {
+ directory->mtime =
+ g_ascii_strtoull(line + sizeof(DIRECTORY_MTIME) - 1,
+ NULL, 10);
+
+ line = file.ReadLine();
+ if (line == NULL) {
+ g_set_error(error_r, directory_quark(), 0,
+ "Unexpected end of file");
+ directory->Delete();
+ return NULL;
+ }
+ }
+
+ if (!g_str_has_prefix(line, DIRECTORY_BEGIN)) {
+ g_set_error(error_r, directory_quark(), 0,
+ "Malformed line: %s", line);
+ directory->Delete();
+ return NULL;
+ }
+
+ success = directory_load(file, directory, error_r);
+ if (!success) {
+ directory->Delete();
+ return NULL;
+ }
+
+ return directory;
+}
+
+bool
+directory_load(TextFile &file, Directory *directory, GError **error)
+{
+ const char *line;
+
+ while ((line = file.ReadLine()) != NULL &&
+ !g_str_has_prefix(line, DIRECTORY_END)) {
+ if (g_str_has_prefix(line, DIRECTORY_DIR)) {
+ Directory *subdir =
+ directory_load_subdir(file, directory,
+ line + sizeof(DIRECTORY_DIR) - 1,
+ error);
+ if (subdir == NULL)
+ return false;
+ } else if (g_str_has_prefix(line, SONG_BEGIN)) {
+ const char *name = line + sizeof(SONG_BEGIN) - 1;
+ struct song *song;
+
+ if (directory->FindSong(name) != nullptr) {
+ g_set_error(error, directory_quark(), 0,
+ "Duplicate song '%s'", name);
+ return false;
+ }
+
+ song = song_load(file, directory, name, error);
+ if (song == NULL)
+ return false;
+
+ directory->AddSong(song);
+ } else if (g_str_has_prefix(line, PLAYLIST_META_BEGIN)) {
+ /* duplicate the name, because
+ playlist_metadata_load() will overwrite the
+ buffer */
+ char *name = g_strdup(line + sizeof(PLAYLIST_META_BEGIN) - 1);
+
+ if (!playlist_metadata_load(file, directory->playlists,
+ name, error)) {
+ g_free(name);
+ return false;
+ }
+
+ g_free(name);
+ } else {
+ g_set_error(error, directory_quark(), 0,
+ "Malformed line: %s", line);
+ return false;
+ }
+ }
+
+ return true;
+}