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merge with mainline

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BVK Chaitanya 2010-09-04 22:34:32 +05:30
commit ee14ec9935
27 changed files with 1004 additions and 396 deletions
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90
grub-core/commands/regexp.c
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@ -20,38 +20,104 @@
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/command.h>
#include <grub/err.h>
#include <grub/env.h>
#include <grub/extcmd.h>
#include <grub/i18n.h>
#include <grub/script_sh.h>
#include <regex.h>
static const struct grub_arg_option options[] =
{
{ "set", 's', GRUB_ARG_OPTION_REPEATABLE,
N_("Variable names to update with matches."),
N_("[NUMBER:]VARNAME"), ARG_TYPE_STRING },
{ 0, 0, 0, 0, 0, 0 }
};
static grub_err_t
grub_cmd_regexp (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
set_matches (char **varnames, char *str, grub_size_t nmatches,
regmatch_t *matches)
{
int i;
char ch;
char *p;
char *q;
grub_err_t err;
unsigned long j;
auto void setvar (char *v, regmatch_t *m);
void setvar (char *v, regmatch_t *m)
{
ch = str[m->rm_eo];
str[m->rm_eo] = '\0';
err = grub_env_set (v, str + m->rm_so);
str[m->rm_eo] = ch;
}
for (i = 0; varnames && varnames[i]; i++)
{
if (! (p = grub_strchr (varnames[i], ':')))
{
/* varname w/o index defaults to 1 */
if (nmatches < 2 || matches[1].rm_so == -1)
grub_env_unset (varnames[i]);
else
setvar (varnames[i], &matches[1]);
}
else
{
j = grub_strtoul (varnames[i], &q, 10);
if (q != p)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"invalid variable name format %s", varnames[i]);
if (nmatches <= j || matches[j].rm_so == -1)
grub_env_unset (p + 1);
else
setvar (p + 1, &matches[j]);
}
if (err != GRUB_ERR_NONE)
return err;
}
return GRUB_ERR_NONE;
}
static grub_err_t
grub_cmd_regexp (grub_extcmd_context_t ctxt, int argc, char **args)
{
int argn = 0;
int matches = 0;
regex_t regex;
int ret;
grub_size_t s;
char *comperr;
grub_err_t err;
regmatch_t *matches = 0;
if (argc != 2)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "2 arguments expected");
ret = regcomp (&regex, args[0], RE_SYNTAX_GNU_AWK);
ret = regcomp (&regex, args[0], REG_EXTENDED);
if (ret)
goto fail;
ret = regexec (&regex, args[1], 0, 0, 0);
matches = grub_zalloc (sizeof (*matches) * (regex.re_nsub + 1));
if (! matches)
goto fail;
ret = regexec (&regex, args[1], regex.re_nsub + 1, matches, 0);
if (!ret)
{
err = set_matches (ctxt->state[0].args, args[1],
regex.re_nsub + 1, matches);
regfree (&regex);
return GRUB_ERR_NONE;
grub_free (matches);
return err;
}
fail:
grub_free (matches);
s = regerror (ret, &regex, 0, 0);
comperr = grub_malloc (s);
if (!comperr)
@ -66,13 +132,13 @@ grub_cmd_regexp (grub_command_t cmd __attribute__ ((unused)),
return err;
}
static grub_command_t cmd;
static grub_extcmd_t cmd;
GRUB_MOD_INIT(regexp)
{
cmd = grub_register_command ("regexp", grub_cmd_regexp,
N_("REGEXP STRING"),
N_("Test if REGEXP matches STRING."));
cmd = grub_register_extcmd ("regexp", grub_cmd_regexp,
GRUB_COMMAND_FLAG_BOTH, N_("REGEXP STRING"),
N_("Test if REGEXP matches STRING."), options);
/* Setup GRUB script wildcard translator. */
grub_wildcard_translator = &grub_filename_translator;
@ -80,6 +146,6 @@ GRUB_MOD_INIT(regexp)
GRUB_MOD_FINI(regexp)
{
grub_unregister_command (cmd);
grub_unregister_extcmd (cmd);
grub_wildcard_translator = 0;
}