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2008-02-02 Robert Millan <rmh@aybabtu.com>

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* commands/read.c: New file.
        * conf/common.rmk (pkglib_MODULES): Add `commands/read.c'.
        (read_mod_SOURCES): New variable.
        (read_mod_CFLAGS): Likewise.
        (read_mod_LDFLAGS): Likewise.
This commit is contained in:
robertmh 2008-02-02 20:35:08 +00:00
parent e03a11328e
commit 4020aa53c0
5 changed files with 147 additions and 4 deletions
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81
commands/read.c Normal file
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/* read.c - Command to read variables from user. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007,2008 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/misc.h>
#include <grub/mm.h>
#include <grub/normal.h>
#include <grub/term.h>
#include <grub/types.h>
static char *
grub_getline (void)
{
int i;
char *line;
char *tmp;
i = 0;
line = grub_malloc (1 + i + sizeof('\0'));
if (! line)
return NULL;
while ((line[i - 1] != '\n') && (line[i - 1] != '\r'))
{
line[i] = grub_getkey ();
if (grub_isprint (line[i]))
grub_putchar (line[i]);
i++;
tmp = grub_realloc (line, 1 + i + sizeof('\0'));
if (! tmp)
{
grub_free (line);
return NULL;
}
line = tmp;
}
line[i] = '\0';
return line;
}
static grub_err_t
grub_cmd_read (struct grub_arg_list *state UNUSED, int argc, char **args)
{
char *line = grub_getline ();
if (! line)
return grub_errno;
if (argc > 0)
grub_env_set (args[0], line);
grub_free (line);
return 0;
}
GRUB_MOD_INIT(read)
{
grub_register_command ("read", grub_cmd_read, GRUB_COMMAND_FLAG_CMDLINE,
"read [ENVVAR]", "Set variable with user input", 0);
}
GRUB_MOD_FINI(read)
{
grub_unregister_command ("read");
}