ack/lang/cem/libcc.ansi/sys/stdio/tmpnam.c

/*
 * tmpnam.c - create a unique filename
 */
/* $Id$ */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "loc_incl.h"

#if ACKCONF_WANT_STDIO

char* tmpnam(char* s)
{
	static char name_buffer[L_tmpnam] = ACK_TMP_PREFIX;
	static unsigned long count = 0;
	static char* name = NULL;

	if (!name)
	{
		name = name_buffer + strlen(name_buffer);
		name = _i_compute(getpid(), 10, name, 5);
		*name++ = '.';
		*name = '\0';
	}
	if (++count > TMP_MAX)
		count = 1; /* wrap-around */
	*_i_compute(count, 10, name, 3) = '\0';
	if (s)
		return strcpy(s, name_buffer);
	else
		return name_buffer;
}

#endif