ref: ce9d09a9650d2903d0dca659669cce14d68bd95b
dir: /sys/src/cmd/gs/src/gp_mktmp.c/
/* Copyright (C) 1999 Aladdin Enterprises. All rights reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
For more information about licensing, please refer to
http://www.ghostscript.com/licensing/. For information on
commercial licensing, go to http://www.artifex.com/licensing/ or
contact Artifex Software, Inc., 101 Lucas Valley Road #110,
San Rafael, CA 94903, U.S.A., +1(415)492-9861.
*/
/* $Id: gp_mktmp.c,v 1.4 2002/02/21 22:24:52 giles Exp $ */
/* Replacement for missing mktemp */
#include "stat_.h"
#include "string_.h"
/* This procedure simulates mktemp on platforms that don't provide it. */
char *
mktemp(char *fname)
{
struct stat fst;
int len = strlen(fname);
char *end = fname + len - 6;
if (len < 6 || strcmp(end, "XXXXXX"))
return (char *)0; /* invalid */
strcpy(end, "AA.AAA");
while (stat(fname, &fst) == 0) {
char *inc = fname + len - 1;
while (*inc == 'Z' || *inc == '.') {
if (inc == end)
return (char *)0; /* failure */
if (*inc == 'Z')
*inc = 'A';
--inc;
}
++*inc;
}
return fname;
}