/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <utime.h>
#include <sys/stat.h>
#include "util.h"

static void touch(const char *);

static bool cflag = false;
static time_t t;

int
main(int argc, char *argv[])
{
	int i;

	t = time(NULL);
	for(i = 1; i < argc; i++)
		if(!strcmp(argv[i], "-c"))
			cflag = true;
		else if(!strcmp(argv[i], "-t") && i+1 < argc)
			t = strtol(argv[++i], NULL, 0);
		else
			break;

	for(; i < argc; i++)
		touch(argv[i]);
	return EXIT_SUCCESS;
}

void
touch(const char *str)
{
	int fd;
	struct stat st;
	struct utimbuf ut;

	if(stat(str, &st) < 0) {
		if(errno != ENOENT)
			eprintf("stat %s:", str);
		if(cflag)
			return;
		if((fd = creat(str, O_RDONLY|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0)
			eprintf("creat %s:", str);
		close(fd);
	}
	ut.actime = st.st_atime;
	ut.modtime = t;
	if(utime(str, &ut) < 0)
		eprintf("utime %s:", str);
}