/*
* DATE Shell Command Implmentation
*
* OAuthor: Fernando RUIZ CASAS
* Work: fernando.ruiz@ctv.es
* Home: correo@fernando-ruiz.com
*
* Significantly rewritten by Joel Sherrill <joel.sherrill@oarcorp.com>.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <rtems.h>
#include <rtems/shell.h>
#include "internal.h"
static int rtems_shell_main_date(
int argc,
char *argv[]
)
{
/*
* Print the current date and time in default format.
*/
if ( argc == 1 ) {
time_t t;
time(&t);
printf("%s", ctime(&t));
return 0;
}
/*
* Set the current date and time
*/
if ( argc == 3 ) {
char buf[128];
struct tm TOD;
struct timespec timesp;
char *result;
snprintf( buf, sizeof(buf), "%s %s", argv[1], argv[2] );
result = strptime(
buf,
"%Y-%m-%d %T",
&TOD
);
if ( result && !*result ) {
timesp.tv_sec = mktime( &TOD );
timesp.tv_nsec = 0;
clock_settime( CLOCK_REALTIME, ×p );
return 0;
}
}
fprintf( stderr, "%s: Usage: [YYYY-MM-DD HH:MM:SS]\n", argv[0] );
return -1;
}
rtems_shell_cmd_t rtems_shell_DATE_Command = {
"date", /* name */
"date [YYYY-MM-DD HH:MM:SS]", /* usage */
"misc", /* topic */
rtems_shell_main_date, /* command */
NULL, /* alias */
NULL /* next */
};