automake commit without merge history

grub-core/commands/read.c

@@ -0,0 +1,90 @@
+/* read.c - Command to read variables from user.  */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2006,2007,2008  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/mm.h>
+#include <grub/env.h>
+#include <grub/term.h>
+#include <grub/types.h>
+#include <grub/command.h>
+#include <grub/i18n.h>
+
+static char *
+grub_getline (void)
+{
+  int i;
+  char *line;
+  char *tmp;
+  char c;
+
+  i = 0;
+  line = grub_malloc (1 + i + sizeof('\0'));
+  if (! line)
+    return NULL;
+
+  while (1)
+    {
+      c = grub_getkey ();
+      if ((c == '\n') || (c == '\r'))
+	break;
+
+      line[i] = c;
+      if (grub_isprint (c))
+	grub_putchar (c);
+      i++;
+      tmp = grub_realloc (line, 1 + i + sizeof('\0'));
+      if (! tmp)
+	{
+	  grub_free (line);
+	  return NULL;
+	}
+      line = tmp;
+    }
+  line[i] = '\0';
+
+  return line;
+}
+
+static grub_err_t
+grub_cmd_read (grub_command_t cmd __attribute__ ((unused)), int argc, char **args)
+{
+  char *line = grub_getline ();
+  if (! line)
+    return grub_errno;
+  if (argc > 0)
+    grub_env_set (args[0], line);
+
+  grub_free (line);
+  return 0;
+}
+
+static grub_command_t cmd;
+
+GRUB_MOD_INIT(read)
+{
+  cmd = grub_register_command ("read", grub_cmd_read,
+			       N_("[ENVVAR]"),
+			       N_("Set variable with user input."));
+}
+
+GRUB_MOD_FINI(read)
+{
+  grub_unregister_command (cmd);
+}