1 files changed, 84 insertions, 0 deletions
diff --git a/grub-core/kern/rescue_parser.c b/grub-core/kern/rescue_parser.c
new file mode 100644
index 0000000..6338366
--- /dev/null
+++ b/grub-core/kern/rescue_parser.c
@@ -0,0 +1,84 @@
+/* rescue_parser.c - rescue mode parser  */
+/*
+ *  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/types.h>
+#include <grub/mm.h>
+#include <grub/env.h>
+#include <grub/parser.h>
+#include <grub/misc.h>
+#include <grub/command.h>
+#include <grub/i18n.h>
+
+grub_err_t
+grub_rescue_parse_line (char *line,
+			grub_reader_getline_t getline, void *getline_data)
+{
+  char *name;
+  int n;
+  grub_command_t cmd;
+  char **args;
+
+  if (grub_parser_split_cmdline (line, getline, getline_data, &n, &args)
+      || n < 0)
+    return grub_errno;
+
+  if (n == 0)
+    return GRUB_ERR_NONE;
+
+  /* In case of an assignment set the environment accordingly
+     instead of calling a function.  */
+  if (n == 1)
+    {
+      char *val = grub_strchr (args[0], '=');
+
+      if (val)
+	{
+	  val[0] = 0;
+	  grub_env_set (args[0], val + 1);
+	  val[0] = '=';
+	  goto quit;
+	}
+    }
+
+  /* Get the command name.  */
+  name = args[0];
+
+  /* If nothing is specified, restart.  */
+  if (*name == '\0')
+    goto quit;
+
+  cmd = grub_command_find (name);
+  if (cmd)
+    {
+      (cmd->func) (cmd, n - 1, &args[1]);
+    }
+  else
+    {
+      grub_printf_ (N_("Unknown command `%s'.\n"), name);
+      if (grub_command_find ("help"))
+	grub_printf ("Try `help' for usage\n");
+    }
+
+ quit:
+  /* Arguments are returned in single memory chunk separated by zeroes */
+  grub_free (args[0]);
+  grub_free (args);
+
+  return grub_errno;
+}