mirror of
https://git.proxmox.com/git/grub2
synced 2025-11-03 23:50:02 +00:00
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/* tr.c -- The tr command. */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2010,2013 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/mm.h>
|
|
#include <grub/err.h>
|
|
#include <grub/env.h>
|
|
#include <grub/i18n.h>
|
|
#include <grub/misc.h>
|
|
#include <grub/extcmd.h>
|
|
|
|
GRUB_MOD_LICENSE ("GPLv3+");
|
|
|
|
static const struct grub_arg_option options[] =
|
|
{
|
|
{ "set", 's', 0, N_("Set a variable to return value."), N_("VARNAME"), ARG_TYPE_STRING },
|
|
{ "upcase", 'U', 0, N_("Translate to upper case."), 0, 0 },
|
|
{ "downcase", 'D', 0, N_("Translate to lower case."), 0, 0 },
|
|
{ 0, 0, 0, 0, 0, 0 }
|
|
};
|
|
|
|
static const char *letters_lowercase = "abcdefghijklmnopqrstuvwxyz";
|
|
static const char *letters_uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
|
|
|
static grub_err_t
|
|
grub_cmd_tr (grub_extcmd_context_t ctxt, int argc, char **args)
|
|
{
|
|
char *var = 0;
|
|
const char *input = 0;
|
|
char *output = 0, *optr;
|
|
const char *s1 = 0;
|
|
const char *s2 = 0;
|
|
const char *iptr;
|
|
|
|
/* Select the defaults from options. */
|
|
if (ctxt->state[0].set) {
|
|
var = ctxt->state[0].arg;
|
|
input = grub_env_get (var);
|
|
}
|
|
|
|
if (ctxt->state[1].set) {
|
|
s1 = letters_lowercase;
|
|
s2 = letters_uppercase;
|
|
}
|
|
|
|
if (ctxt->state[2].set) {
|
|
s1 = letters_uppercase;
|
|
s2 = letters_lowercase;
|
|
}
|
|
|
|
/* Check for arguments and update the defaults. */
|
|
if (argc == 1)
|
|
input = args[0];
|
|
|
|
else if (argc == 2) {
|
|
s1 = args[0];
|
|
s2 = args[1];
|
|
|
|
} else if (argc == 3) {
|
|
s1 = args[0];
|
|
s2 = args[1];
|
|
input = args[2];
|
|
|
|
} else if (argc > 3)
|
|
return grub_error (GRUB_ERR_BAD_ARGUMENT, "too many parameters");
|
|
|
|
if (argc <= 0 && (!s1 || !s2 || !input))
|
|
return grub_error (GRUB_ERR_BAD_ARGUMENT, "missing parameters");
|
|
|
|
if (grub_strlen (s1) != grub_strlen (s2))
|
|
return grub_error (GRUB_ERR_BAD_ARGUMENT, "set sizes did not match");
|
|
|
|
/* Translate input into output buffer. */
|
|
|
|
output = grub_malloc (grub_strlen (input) + 1);
|
|
if (! output)
|
|
return grub_errno;
|
|
|
|
optr = output;
|
|
for (iptr = input; *iptr; iptr++)
|
|
{
|
|
char *p = grub_strchr (s1, *iptr);
|
|
if (p)
|
|
*optr++ = s2[p - s1];
|
|
else
|
|
*optr++ = *iptr;
|
|
}
|
|
*optr = '\0';
|
|
|
|
if (ctxt->state[0].set)
|
|
grub_env_set (var, output);
|
|
else
|
|
grub_printf ("%s\n", output);
|
|
|
|
grub_free (output);
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
static grub_extcmd_t cmd;
|
|
|
|
GRUB_MOD_INIT(tr)
|
|
{
|
|
cmd = grub_register_extcmd ("tr", grub_cmd_tr, 0, N_("[OPTIONS] [SET1] [SET2] [STRING]"),
|
|
N_("Translate SET1 characters to SET2 in STRING."), options);
|
|
}
|
|
|
|
GRUB_MOD_FINI(tr)
|
|
{
|
|
grub_unregister_extcmd (cmd);
|
|
}
|