util/grub-menulst2cfg.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2010  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <config.h>
  20
  21 #include <grub/legacy_parse.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <errno.h>
  25 #include <grub/util/misc.h>
  26 #include <grub/misc.h>
  27 #include <grub/i18n.h>
  28
  29 int
  30 main (int argc, char **argv)
  31 {
  32   FILE *in, *out;
  33   char *entryname = NULL;
  34   char *buf = NULL;
  35   size_t bufsize = 0;
  36   char *suffix = xstrdup ("");
  37   int suffixlen = 0;
  38   const char *out_fname = 0;
  39
  40   grub_util_host_init (&argc, &argv);
  41
  42   if (argc >= 2 && argv[1][0] == '-')
  43     {
  44       fprintf (stdout, _("Usage: %s [INFILE [OUTFILE]]\n"), argv[0]);
  45       return 0;
  46     }
  47
  48   if (argc >= 2)
  49     {
  50       in = grub_util_fopen (argv[1], "r");
  51       if (!in)
  52         {
  53           fprintf (stderr, _("cannot open `%s': %s"),
  54                    argv[1], strerror (errno));
  55           return 1;
  56         }
  57     }
  58   else
  59     in = stdin;
  60
  61   if (argc >= 3)
  62     {
  63       out = grub_util_fopen (argv[2], "w");
  64       if (!out)
  65         {
  66           if (in != stdin)
  67             fclose (in);
  68           fprintf (stderr, _("cannot open `%s': %s"),
  69                    argv[2], strerror (errno));
  70           return 1;
  71         }
  72       out_fname = argv[2];
  73     }
  74   else
  75     out = stdout;
  76
  77   while (1)
  78     {
  79       char *parsed;
  80
  81       if (getline (&buf, &bufsize, in) < 0)
  82         break;
  83
  84       {
  85         char *oldname = NULL;
  86         char *newsuffix;
  87
  88         oldname = entryname;
  89         parsed = grub_legacy_parse (buf, &entryname, &newsuffix);
  90         if (newsuffix)
  91           {
  92             suffixlen += strlen (newsuffix);
  93             suffix = xrealloc (suffix, suffixlen + 1);
  94             strcat (suffix, newsuffix);
  95           }
  96         if (oldname != entryname && oldname)
  97           fprintf (out, "}\n\n");
  98         if (oldname != entryname)
  99           {
 100             char *escaped = grub_legacy_escape (entryname, strlen (entryname));
 101             fprintf (out, "menuentry \'%s\' {\n", escaped);
 102             free (escaped);
 103             free (oldname);
 104           }
 105       }
 106
 107       if (parsed)
 108         fprintf (out, "%s%s", entryname ? "  " : "", parsed);
 109       free (parsed);
 110       parsed = NULL;
 111     }
 112
 113   if (entryname)
 114     fprintf (out, "}\n\n");
 115
 116   if (fwrite (suffix, 1, suffixlen, out) != suffixlen)
 117     {
 118       if (out_fname)
 119         grub_util_error ("cannot write to `%s': %s",
 120                          out_fname, strerror (errno));
 121       else
 122         grub_util_error ("cannot write to the stdout: %s", strerror (errno));
 123     }
 124
 125   free (buf);
 126   free (suffix);
 127   free (entryname);
 128
 129   if (in != stdin)
 130     fclose (in);
 131   if (out != stdout)
 132     fclose (out);
 133
 134   return 0;
 135 }