ack/lang/cem/libcc.ansi/misc/mktemp.c

/* $Id$ */
/* mktemp - make a name for a temporary file; only here for backwards compat */
/* no _-protected system-calls? */

unsigned int getpid(void);
int access(char*, int);

char* mktemp(char* template)
{
	register int pid, k;
	register char* p;

	pid = getpid(); /* get process id as semi-unique number */
	p = template;
	while (*p)
		p++; /* find end of string */

	/* Replace XXXXXX at end of template with pid. */
	while (*--p == 'X')
	{
		*p = '0' + (pid % 10);
		pid /= 10;
	}
	p++;
	for (k = 'a'; k <= 'z'; k++)
	{
		*p = k;
		if (access(template, 0) < 0)
		{
			return template;
		}
	}
	return ("/");
}