File: makepath.c

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/*
 * Copyright (c) 1996, 1997, 1998, 1999
 *            Shigio Yamaguchi. All rights reserved.
 * Copyright (c) 1999
 *            Tama Communications Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Tama Communications
 *      Corporation and its contributors.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	makepath.c				3-Aug-99
 *
 */
#include <string.h>

#include "gparam.h"
#include "die.h"
#include "makepath.h"
#include "strbuf.h"

static STRBUF	*sb;
/*
 * makepath: make path from directory and file.
 *
 *	i)	dir	directory
 *	i)	file	file
 *	i)	suffix	suffix(optional)
 *	r)		path
 */
char	*
makepath(dir, file, suffix)
const char *dir;
const char *file;
const char *suffix;
{
	int	length;

	if (sb == NULL)
		sb = stropen();
	strstart(sb);
	if ((length = strlen(dir)) > MAXPATHLEN)
		die1("path name too long. '%s'\n", dir);
	strputs(sb, dir);
	strunputc(sb, '/');
	strputc(sb, '/');
	strputs(sb, file);
	if (suffix) {
		if (*suffix != '.')
			strputc(sb, '.');
		strputs(sb, suffix);
	}
	if ((length = strlen(strvalue(sb))) > MAXPATHLEN)
		die1("path name too long. '%s'\n", strvalue(sb));
	return strvalue(sb);
}