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Implement syslinux parser.

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This commit is contained in:
Vladimir Serbinenko 2013-12-18 05:28:05 +01:00
parent 8ff35d0a1b
commit 8f5add13ff
10 changed files with 2116 additions and 58 deletions
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58
grub-core/normal/main.c
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@ -40,64 +40,6 @@ GRUB_MOD_LICENSE ("GPLv3+");
static int nested_level = 0;
int grub_normal_exit_level = 0;
/* Read a line from the file FILE. */
char *
grub_file_getline (grub_file_t file)
{
char c;
grub_size_t pos = 0;
char *cmdline;
int have_newline = 0;
grub_size_t max_len = 64;
/* Initially locate some space. */
cmdline = grub_malloc (max_len);
if (! cmdline)
return 0;
while (1)
{
if (grub_file_read (file, &c, 1) != 1)
break;
/* Skip all carriage returns. */
if (c == '\r')
continue;
if (pos + 1 >= max_len)
{
char *old_cmdline = cmdline;
max_len = max_len * 2;
cmdline = grub_realloc (cmdline, max_len);
if (! cmdline)
{
grub_free (old_cmdline);
return 0;
}
}
if (c == '\n')
{
have_newline = 1;
break;
}
cmdline[pos++] = c;
}
cmdline[pos] = '\0';
/* If the buffer is empty, don't return anything at all. */
if (pos == 0 && !have_newline)
{
grub_free (cmdline);
cmdline = 0;
}
return cmdline;
}
void
grub_normal_free_menu (grub_menu_t menu)
{