1 files changed, 77 insertions, 0 deletions
diff --git a/src/mapper.c b/src/mapper.c
new file mode 100644
index 000000000..392211214
--- /dev/null
+++ b/src/mapper.c
@@ -0,0 +1,77 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2008 Max Kellermann <max@duempel.org>
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Maps directory and song objects to file system paths.
+ */
+
+#include "mapper.h"
+#include "directory.h"
+#include "song.h"
+#include "path.h"
+
+const char *
+map_directory_fs(const struct directory *directory, char *buffer)
+{
+	const char *dirname = directory_get_path(directory);
+	if (isRootDirectory(dirname))
+	    return musicDir;
+
+	return rmp2amp_r(buffer, utf8_to_fs_charset(buffer, dirname));
+}
+
+const char *
+map_directory_child_fs(const struct directory *directory, const char *name,
+		       char *buffer)
+{
+	char buffer2[MPD_PATH_MAX];
+	const char *parent_fs;
+
+	parent_fs = map_directory_fs(directory, buffer2);
+	if (parent_fs == NULL)
+		return NULL;
+
+	utf8_to_fs_charset(buffer, name);
+	pfx_dir(buffer, name, strlen(name),
+		parent_fs, strlen(parent_fs));
+	return buffer;
+}
+
+const char *
+map_song_fs(const struct song *song, char *buffer)
+{
+	assert(song->parent != NULL);
+
+	return map_directory_child_fs(song->parent, song->url, buffer);
+}
+
+const char *
+map_fs_to_utf8(const char *path_fs, char *buffer)
+{
+	size_t music_path_length = strlen(musicDir);
+
+	if (strncmp(path_fs, musicDir, music_path_length) == 0 &&
+	    path_fs[music_path_length] == '/')
+		/* remove musicDir prefix */
+		path_fs += music_path_length;
+	else if (path_fs[0] == '/')
+		/* not within musicDir */
+		return NULL;
+
+	return fs_charset_to_utf8(buffer, path_fs);
+}