Split up sdcard G-codes

Marlin/src/gcode/sdcard/M34.cpp

@@ -0,0 +1,42 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(SDCARD_SORT_ALPHA) && ENABLED(SDSORT_GCODE)
+
+#include "../gcode.h"
+#include "../../sd/cardreader.h"
+
+/**
+ * M34: Set SD Card Sorting Options
+ */
+void GcodeSuite::M34() {
+  if (parser.seen('S')) card.setSortOn(parser.value_bool());
+  if (parser.seenval('F')) {
+    const int v = parser.value_long();
+    card.setSortFolders(v < 0 ? -1 : v > 0 ? 1 : 0);
+  }
+  //if (parser.seen('R')) card.setSortReverse(parser.value_bool());
+}
+
+#endif // SDCARD_SORT_ALPHA && SDSORT_GCODE