db_plugin: convert to C++

1 files changed, 199 insertions, 0 deletions

diff --git a/src/DatabaseGlue.cxx b/src/DatabaseGlue.cxx
new file mode 100644
index 00000000..551facc4
--- /dev/null
+++ b/src/DatabaseGlue.cxx
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2003-2011 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"
+
+extern "C" {
+#include "database.h"
+#include "db_error.h"
+#include "db_save.h"
+#include "db_selection.h"
+#include "db_visitor.h"
+#include "stats.h"
+#include "conf.h"
+#include "glib_compat.h"
+}
+
+#include "directory.h"
+
+#include "DatabasePlugin.hxx"
+#include "db/SimpleDatabasePlugin.hxx"
+
+#include <glib.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "database"
+
+static Database *db;
+static bool db_is_open;
+
+bool
+db_init(const struct config_param *path, GError **error_r)
+{
+	assert(db == NULL);
+	assert(!db_is_open);
+
+	if (path == NULL)
+		return true;
+
+	struct config_param *param = config_new_param("database", path->line);
+	config_add_block_param(param, "path", path->value, path->line);
+
+	db = simple_db_plugin.create(param, error_r);
+
+	config_param_free(param);
+
+	return db != NULL;
+}
+
+void
+db_finish(void)
+{
+	if (db_is_open)
+		db->Close();
+
+	if (db != NULL)
+		delete db;
+}
+
+struct directory *
+db_get_root(void)
+{
+	assert(db != NULL);
+
+	return ((SimpleDatabase *)db)->GetRoot();
+}
+
+struct directory *
+db_get_directory(const char *name)
+{
+	if (db == NULL)
+		return NULL;
+
+	struct directory *music_root = db_get_root();
+	if (name == NULL)
+		return music_root;
+
+	struct directory *directory =
+		directory_lookup_directory(music_root, name);
+	return directory;
+}
+
+struct song *
+db_get_song(const char *file)
+{
+	assert(file != NULL);
+
+	g_debug("get song: %s", file);
+
+	if (db == NULL)
+		return NULL;
+
+	return db->GetSong(file, NULL);
+}
+
+bool
+db_visit(const struct db_selection *selection,
+	 const struct db_visitor *visitor, void *ctx,
+	 GError **error_r)
+{
+	if (db == NULL) {
+		g_set_error_literal(error_r, db_quark(), DB_DISABLED,
+				    "No database");
+		return false;
+	}
+
+	VisitDirectory visit_directory;
+	if (visitor->directory != NULL)
+		visit_directory = [&](const struct directory *directory,
+				     GError **error_r2) {
+			return visitor->directory(directory, ctx, error_r2);
+		};
+
+	VisitSong visit_song;
+	if (visitor->song != NULL)
+		visit_song = [&](struct song *song, GError **error_r2) {
+			return visitor->song(song, ctx, error_r2);
+		};
+
+	VisitPlaylist visit_playlist;
+	if (visitor->playlist != NULL)
+		visit_playlist = [&](const struct playlist_metadata *playlist,
+				     const struct directory *directory,
+				     GError **error_r2) {
+			return visitor->playlist(playlist, directory, ctx,
+						 error_r2);
+		};
+
+	return db->Visit(selection,
+			 visit_directory, visit_song, visit_playlist,
+			 error_r);
+}
+
+bool
+db_walk(const char *uri,
+	const struct db_visitor *visitor, void *ctx,
+	GError **error_r)
+{
+	struct db_selection selection;
+	db_selection_init(&selection, uri, true);
+
+	return db_visit(&selection, visitor, ctx, error_r);
+}
+
+bool
+db_save(GError **error_r)
+{
+	assert(db != NULL);
+	assert(db_is_open);
+
+	return ((SimpleDatabase *)db)->Save(error_r);
+}
+
+bool
+db_load(GError **error)
+{
+	assert(db != NULL);
+	assert(!db_is_open);
+
+	if (!db->Open(error))
+		return false;
+
+	db_is_open = true;
+
+	stats_update();
+
+	return true;
+}
+
+time_t
+db_get_mtime(void)
+{
+	assert(db != NULL);
+	assert(db_is_open);
+
+	return ((SimpleDatabase *)db)->GetLastModified();
+}