1 files changed, 96 insertions, 0 deletions
diff --git a/src/mfs_cleanup_db.c b/src/mfs_cleanup_db.c
new file mode 100644
index 0000000..3ce2ff3
--- /dev/null
+++ b/src/mfs_cleanup_db.c
@@ -0,0 +1,96 @@
+/*
+ * Musicfs is a FUSE module implementing a media filesystem in userland.
+ * Copyright (C) 2008  Ulf Lilleengen, Kjetil Ørbekk
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2, as published by the Free Software Foundation.
+ * 
+ * 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.
+ *
+ * A copy of the license can typically be found in COPYING
+ */
+
+#include <sqlite3.h>
+#include <pthread.h>
+
+#include <debug.h>
+#include <musicfs.h>
+
+extern char *db_path;
+
+/*
+ * Clean up the database:
+ *
+ * - Remove disabled paths
+ * - Remove songs in disabled paths
+ * - Remove unused artists and genres
+ */
+void
+mfs_cleanup_db(sqlite3 *handle)
+{
+	DEBUG("cleaning up db\n");
+	/* sqlite doesn't support deleting from multiple tables at the same time :-( */
+	sqlite3_stmt *st, *st_;
+	int res, res_;
+	const char *path;
+
+	
+	/* Removed songs from inactive paths */
+	res = sqlite3_prepare_v2(handle, "SELECT path FROM path WHERE "
+	    "active = 0", -1, &st, NULL);
+	if (res != SQLITE_OK) {
+		DEBUG("Error preparing statement: %s\n",
+		    sqlite3_errmsg(handle));
+		return;
+	}
+	res = sqlite3_step(st);
+	
+	while (res == SQLITE_ROW) {
+		path = (const char*)sqlite3_column_text(st, 0);
+		
+		res_ = sqlite3_prepare_v2(handle, "DELETE FROM song WHERE "
+		    "filepath LIKE (?||'%')", -1, &st_, NULL);
+		if (res_ != SQLITE_OK) {
+			DEBUG("Error preparing statement: %s\n",
+			    sqlite3_errmsg(handle));
+			return;
+		}
+
+		DEBUG("removing songs from '%s'\n", path);
+		sqlite3_bind_text(st_, 1, path, -1, SQLITE_TRANSIENT);
+		res_ = sqlite3_step(st_);
+		if (res_ != SQLITE_DONE) {
+			DEBUG("Error deleting '%s' from database: %s\n",
+			    path, sqlite3_errmsg(handle));
+		}
+		sqlite3_finalize(st_);
+		
+		res = sqlite3_step(st);
+	}
+	sqlite3_finalize(st);
+	
+	/* Remove the actual paths */
+	res = sqlite3_prepare_v2(handle, "DELETE FROM path WHERE "
+	    "active = 0", -1, &st, NULL);
+	if (res != SQLITE_OK) {
+		DEBUG("Error preparing statement: %s\n",
+		    sqlite3_errmsg(handle));
+		return;
+	}
+	res = sqlite3_step(st);
+	if (res != SQLITE_DONE) {
+		DEBUG("Error deleting inactive paths from db: %s\n",
+		    sqlite3_errmsg(handle));
+		return;
+	}
+	sqlite3_finalize(st);
+}
+