From 356670f1f2c3d2884604cf292a3bdf797eca0f4f Mon Sep 17 00:00:00 2001
From: Andrey Borzenkov <arvidjaar@gmail.com>
Date: Fri, 7 Jun 2013 18:40:37 +0200
Subject: [PATCH] 	* grub-core/script/execute.c
 (grub_script_execute_sourcecode): Split 	off new function
 grub_script_execute_new_scope. Change callers to use 	either of them as
 appropriate. 	* grub-core/commands/eval.c: New command eval. 	*
 docs/grub.texi (Commands): Document it.

---
 grub-core/commands/eval.c | 71 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 grub-core/commands/eval.c

diff --git a/grub-core/commands/eval.c b/grub-core/commands/eval.c
new file mode 100644
index 000000000..f826a4f22
--- /dev/null
+++ b/grub-core/commands/eval.c
@@ -0,0 +1,71 @@
+/*
+ *  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/misc.h>
+#include <grub/script_sh.h>
+#include <grub/command.h>
+#include <grub/i18n.h>
+#include <grub/term.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static grub_err_t
+grub_cmd_eval (grub_command_t cmd __attribute__((__unused__)),
+	       int argc, char *argv[])
+{
+  int i;
+  grub_size_t size = argc; /* +1 for final zero */
+  char *str, *p;
+  grub_err_t ret;
+
+  if (argc == 0)
+    return GRUB_ERR_NONE;
+
+  for (i = 0; i < argc; i++)
+    size += grub_strlen (argv[i]);
+
+  str = p = grub_malloc (size);
+  if (!str)
+    return grub_errno;
+
+  for (i = 0; i < argc; i++)
+    {
+      p = grub_stpcpy (p, argv[i]);
+      *p++ = ' ';
+    }
+  *--p = '\0';
+
+  ret = grub_script_execute_sourcecode (str);
+  grub_free (str);
+  return ret;
+}
+
+static grub_command_t cmd;
+
+GRUB_MOD_INIT(eval)
+{
+  cmd = grub_register_command ("eval", grub_cmd_eval, N_("STRING ..."),
+				N_("Evaluate arguments as GRUB commands"));
+}
+
+GRUB_MOD_FINI(eval)
+{
+  grub_unregister_command (cmd);
+}
+