merge with mainline

grub-core/script/main.c

@@ -0,0 +1,81 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009  Free Software Foundation, Inc.
+ *
+ *  GRUB 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.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+#include <grub/i18n.h>
+#include <grub/parser.h>
+#include <grub/script_sh.h>
+
+grub_err_t
+grub_normal_parse_line (char *line, grub_reader_getline_t getline)
+{
+  struct grub_script *parsed_script;
+
+  /* Parse the script.  */
+  parsed_script = grub_script_parse (line, getline);
+
+  if (parsed_script)
+    {
+      /* Execute the command(s).  */
+      grub_script_execute (parsed_script);
+
+      /* The parsed script was executed, throw it away.  */
+      grub_script_free (parsed_script);
+    }
+
+  return grub_errno;
+}
+
+static grub_command_t cmd_break;
+static grub_command_t cmd_continue;
+static grub_command_t cmd_shift;
+static grub_command_t cmd_setparams;
+
+void
+grub_script_init (void)
+{
+  cmd_break = grub_register_command ("break", grub_script_break,
+				     N_("[n]"), N_("Exit from loops"));
+  cmd_continue = grub_register_command ("continue", grub_script_break,
+					N_("[n]"), N_("Continue loops"));
+  cmd_shift = grub_register_command ("shift", grub_script_shift,
+				     N_("[n]"), N_("Shift positional parameters."));
+  cmd_setparams = grub_register_command ("setparams", grub_script_setparams,
+					 N_("[VALUE]..."),
+					 N_("Set positional parameters."));
+}
+
+void
+grub_script_fini (void)
+{
+  if (cmd_break)
+    grub_unregister_command (cmd_break);
+  cmd_break = 0;
+
+  if (cmd_continue)
+    grub_unregister_command (cmd_continue);
+  cmd_continue = 0;
+
+  if (cmd_shift)
+    grub_unregister_command (cmd_shift);
+  cmd_shift = 0;
+
+  if (cmd_setparams)
+    grub_unregister_command (cmd_setparams);
+  cmd_setparams = 0;
+}