test/DumpDatabase: new debug program

Makefile.am

@@ -1010,6 +1010,7 @@ noinst_PROGRAMS = \
 	$(C_TESTS) \
 	test/read_conf \
 	test/run_resolver \
+	test/DumpDatabase \
 	test/run_input \
 	test/dump_text_file \
 	test/dump_playlist \
@@ -1040,6 +1041,21 @@ test_run_resolver_LDADD = \
 test_run_resolver_SOURCES = test/run_resolver.c \
 	src/resolver.c
 
+test_DumpDatabase_LDADD = \
+	libdb_plugins.a \
+	libutil.a \
+	$(GLIB_LIBS)
+test_DumpDatabase_SOURCES = test/DumpDatabase.cxx \
+	src/DatabaseRegistry.cxx \
+	src/Directory.cxx src/directory_save.c \
+	src/playlist_vector.c src/playlist_database.c \
+	src/db_lock.c src/db_save.c \
+	src/song.c src/song_sort.c src/song_save.c \
+	src/tag.c src/tag_pool.c src/tag_save.c \
+	src/path.c \
+	src/text_file.c \
+	src/conf.c src/tokenizer.c src/utils.c src/string_util.c
+
 test_run_input_LDADD = \
 	$(INPUT_LIBS) \
 	$(ARCHIVE_LIBS) \

test/DumpDatabase.cxx

@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2003-2012 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 "DatabaseRegistry.hxx"
+#include "DatabasePlugin.hxx"
+#include "db_selection.h"
+#include "directory.h"
+#include "song.h"
+#include "playlist_vector.h"
+
+extern "C" {
+#include "conf.h"
+#include "tag_pool.h"
+}
+
+#include <iostream>
+using std::cout;
+using std::cerr;
+using std::endl;
+
+#include <stdlib.h>
+
+static void
+my_log_func(const gchar *log_domain, G_GNUC_UNUSED GLogLevelFlags log_level,
+	    const gchar *message, G_GNUC_UNUSED gpointer user_data)
+{
+	if (log_domain != NULL)
+		g_printerr("%s: %s\n", log_domain, message);
+	else
+		g_printerr("%s\n", message);
+}
+
+static bool
+DumpDirectory(const struct directory *directory, GError **)
+{
+	cout << "D " << directory->path << endl;
+	return true;
+}
+
+static bool
+DumpSong(struct song *song, GError **)
+{
+	cout << "S " << song->parent->path << "/" << song->uri << endl;
+	return true;
+}
+
+static bool
+DumpPlaylist(const struct playlist_metadata *playlist,
+	     const struct directory *directory, GError **)
+{
+	cout << "P " << directory->path << "/" << playlist->name << endl;
+	return true;
+}
+
+int
+main(int argc, char **argv)
+{
+	GError *error = nullptr;
+
+	if (argc != 3) {
+		cerr << "Usage: DumpDatabase CONFIG PLUGIN" << endl;
+		return 1;
+	}
+
+	const char *const config_path = argv[1];
+	const char *const plugin_name = argv[2];
+
+	const DatabasePlugin *plugin = GetDatabasePluginByName(plugin_name);
+	if (plugin == NULL) {
+		cerr << "No such database plugin: " << plugin_name << endl;
+		return EXIT_FAILURE;
+	}
+
+	/* initialize GLib */
+
+	g_thread_init(nullptr);
+	g_log_set_default_handler(my_log_func, nullptr);
+
+	/* initialize MPD */
+
+	tag_pool_init();
+	config_global_init();
+
+	if (!config_read_file(config_path, &error)) {
+		cerr << error->message << endl;
+		g_error_free(error);
+		return EXIT_FAILURE;
+	}
+
+	tag_lib_init();
+
+	/* do it */
+
+	const struct config_param *path = config_get_param(CONF_DB_FILE);
+	struct config_param *param = config_new_param("database", path->line);
+	if (path != nullptr)
+		config_add_block_param(param, "path", path->value, path->line);
+
+	Database *db = plugin->create(param, &error);
+
+	config_param_free(param);
+
+	if (db == nullptr) {
+		cerr << error->message << endl;
+		g_error_free(error);
+		return EXIT_FAILURE;
+	}
+
+	if (!db->Open(&error)) {
+		delete db;
+		cerr << error->message << endl;
+		g_error_free(error);
+		return EXIT_FAILURE;
+	}
+
+	db_selection selection;
+	db_selection_init(&selection, "", true);
+
+	if (!db->Visit(&selection, DumpDirectory, DumpSong, DumpPlaylist,
+		       &error)) {
+		db->Close();
+		delete db;
+		cerr << error->message << endl;
+		g_error_free(error);
+		return EXIT_FAILURE;
+	}
+
+	db->Close();
+	delete db;
+
+	/* deinitialize everything */
+
+	config_global_finish();
+	tag_pool_deinit();
+
+	return EXIT_SUCCESS;
+}