src/user/date.nsc

include "syscalls.nsh";
include "stdio.nsh";
 
/* prints "YYYY-MM-DD HH:MM:SS" from the cmos rtc (syscall 22). no
 * timezone (the rtc itself is usually just set to whatever the host
 * gave it -- utc under qemu, most of the time), no formatting
 * options -- one fixed, sortable format, minimalized like everything
 * else here. */
void
print2(u64 val)
{
	if(val < (u64)10)
	{
		putchar((u8)48);
	}
	put_udec(val);
}
 
global i32
main(i32 argc, ptr argv)
{
	u64 dt[6];
 
	sys_date((ptr)&dt[0]);
 
	put_udec(dt[5]);
	putchar((u8)45); /* '-' */
	print2(dt[4]);
	putchar((u8)45);
	print2(dt[3]);
	putchar((u8)32); /* ' ' */
	print2(dt[2]);
	putchar((u8)58); /* ':' */
	print2(dt[1]);
	putchar((u8)58);
	print2(dt[0]);
	putchar((u8)10);
	stdio_flush();
	return 0;
}