ls: added uri_has_scheme()

uri_has_scheme() checks if an URI contains the sub string "://", which
makes MPD assume that it is a remote URI.

src/ls.c

@@ -42,6 +42,10 @@ void printRemoteUrlHandlers(struct client *client)
 	}
 }
 
+bool uri_has_scheme(const char *uri)
+{
+	return strstr(uri, "://") != NULL;
+}
 
 bool isRemoteUrl(const char *url)
 {

src/ls.h

@@ -28,6 +28,12 @@ struct client;
 
 const char *getSuffix(const char *utf8file);
 
+/**
+ * Checks whether the specified URI has a schema in the form
+ * "scheme://".
+ */
+bool uri_has_scheme(const char *uri);
+
 bool isRemoteUrl(const char *url);
 
 const struct decoder_plugin *