grub/commands/sleep.c
carles 941903f2bd 2009-12-21 Carles Pina i Estany <carles@pina.cat>
* commands/acpi.c (options): Fix capitalizations and/or full stops.
	(GRUB_MOD_INIT): Likewise.
	* commands/boot.c (GRUB_MOD_INIT): Likewise.
	* commands/cmp.c (grub_cmd_cmp): Likewise.
	* commands/echo.c (options): Likewise.
	* commands/efi/loadbios.c (enable_rom_area): Likewise.
	(enable_rom_area): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* commands/gptsync.c (GRUB_MOD_INIT): Likewise.
	* commands/halt.c (GRUB_MOD_INIT): Improve the help message.
	* commands/handler.c (GRUB_MOD_INIT): Likewise.
	* commands/hdparm.c (options): Fix capitalizations and/or full stops.
	* commands/hexdump.c (options): Likewise.
	* commands/i386/cpuid.c (options): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* commands/i386/pc/drivemap.c (options): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* commands/i386/pc/halt (options): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* commands/i386/pc/play.c (GRUB_MOD_INIT): Likewise.
	* commands/i386/pc/pxecmd.c (options): Likewise.
	* commands/i386/pc/vbetest.c (GRUB_MOD_INIT): Likewise.
	* commands/ieee1275/suspend.c (GRUB_MOD_INIT): Likewise.
	* commands/keystatus.c (options): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* commands/loadenv.c (options): Likewise.
	* commands/ls.c (options): Likewise.
	* commands/lspci.c (GRUB_MOD_INIT): Likewise.
	* commands/memrw.c (GRUB_MOD_INIT): Likewise.
	* commands/minicmd.c (GRUB_MOD_INIT): Likewise.
	* commands/parttool.c (helpmsg): Likewise.
	* commands/probe.c (options): Likewise.
	* commands/read.c (GRUB_MOD_INIT): Likewise.
	* commands/reboot.c (GRUB_MOD_INIT): Likewise.
	* commands/search.c (options): Likewise.
	* commands/sleep.c (options): Likewise.
	* commands/test.c (GRUB_MOD_INIT): Likewise.
	* commands/true.c (GRUB_MOD_INIT): Likewise.
	* commands/usbtest.c (GRUB_MOD_INIT): Likewise.
	* commands/videotest.c (GRUB_MOD_INIT): Likewise.
	* lib/arg.c (help_options): Likewise.
2009-12-21 22:06:04 +00:00

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/* sleep.c - Command to wait a specified number of seconds. */
/*
* 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/term.h>
#include <grub/time.h>
#include <grub/types.h>
#include <grub/misc.h>
#include <grub/machine/time.h>
#include <grub/extcmd.h>
static const struct grub_arg_option options[] =
{
{"verbose", 'v', 0, "Verbose countdown.", 0, 0},
{"interruptible", 'i', 0, "Interruptible with ESC.", 0, 0},
{0, 0, 0, 0, 0, 0}
};
static grub_uint8_t x, y;
static void
do_print (int n)
{
grub_gotoxy (x, y);
/* NOTE: Do not remove the trailing space characters.
They are required to clear the line. */
grub_printf ("%d ", n);
}
/* Based on grub_millisleep() from kern/generic/millisleep.c. */
static int
grub_interruptible_millisleep (grub_uint32_t ms)
{
grub_uint64_t start;
start = grub_get_time_ms ();
while (grub_get_time_ms () - start < ms)
if (grub_checkkey () >= 0 &&
GRUB_TERM_ASCII_CHAR (grub_getkey ()) == GRUB_TERM_ESC)
return 1;
return 0;
}
static grub_err_t
grub_cmd_sleep (grub_extcmd_t cmd, int argc, char **args)
{
struct grub_arg_list *state = cmd->state;
grub_uint16_t xy;
int n;
if (argc != 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "missing operand");
n = grub_strtoul (args[0], 0, 10);
if (n == 0)
{
/* Either `0' or broken input. */
return 0;
}
xy = grub_getxy ();
x = xy >> 8;
y = xy & 0xff;
for (; n; n--)
{
if (state[0].set)
do_print (n);
if (state[1].set)
{
if (grub_interruptible_millisleep (1000))
return 1;
}
else
grub_millisleep (1000);
}
if (state[0].set)
do_print (0);
return 0;
}
static grub_extcmd_t cmd;
GRUB_MOD_INIT(sleep)
{
cmd = grub_register_extcmd ("sleep", grub_cmd_sleep, GRUB_COMMAND_FLAG_BOTH,
"sleep NUMBER_OF_SECONDS",
"Wait for a specified number of seconds.",
options);
}
GRUB_MOD_FINI(sleep)
{
grub_unregister_extcmd (cmd);
}