Implement grub-menulst2cfg and fix many bugs in legacy_parser

util/grub-menulst2cfg.c

@@ -0,0 +1,99 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010  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/legacy_parse.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+int
+main (int argc, char **argv)
+{
+  FILE *in, *out;
+  char *entryname = NULL;
+  char *buf = NULL;
+  size_t bufsize = 0;
+
+  if (argc >= 2 && argv[1][0] == '-')
+    {
+      fprintf (stderr, "Usage: %s [INFILE [OUTFILE]]\n", argv[0]);
+      return 0;
+    }
+
+  if (argc >= 2)
+    {
+      in = fopen (argv[1], "r");
+      if (!in)
+	{
+	  fprintf (stderr, "Couldn't open %s for reading: %s\n",
+		   argv[1], strerror (errno));
+	  return 1;
+	}
+    }
+  else
+    in = stdin;
+
+  if (argc >= 3)
+    {
+      out = fopen (argv[2], "w");
+      if (!out)
+	{					
+	  if (in != stdin)
+	    fclose (in);
+	  fprintf (stderr, "Couldn't open %s for writing: %s\n",
+		   argv[2], strerror (errno));
+	  return 1;
+	}
+    }
+  else
+    out = stdout;
+
+  while (1)
+    {
+      char *parsed;
+
+      if (getline (&buf, &bufsize, in) < 0)
+	break;
+
+      {
+	char *oldname = NULL;
+
+	oldname = entryname;
+	parsed = grub_legacy_parse (buf, &entryname);
+	if (oldname != entryname && oldname)
+	  fprintf (out, "}\n\n");
+	if (oldname != entryname)
+	  fprintf (out, "menuentry \'%s\' {\n",
+		   grub_legacy_escape (entryname, grub_strlen (entryname)));
+      }
+
+      if (parsed)
+	fprintf (out, "%s%s", entryname ? "  " : "", parsed);
+    }
+
+  if (entryname)
+    fprintf (out, "}\n\n");
+
+
+  if (in != stdin)
+    fclose (in);
+  if (out != stdout)
+    fclose (out);
+
+  return 0;
+}