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/* $OpenBSD: misc.c,v 1.8 1999/09/06 13:20:40 espie Exp $ */
/* $NetBSD: misc.c,v 1.6 1995/09/28 05:37:41 tls Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ozan Yigit at York University.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93";
#else
static char rcsid[] = "$OpenBSD: misc.c,v 1.8 1999/09/06 13:20:40 espie Exp $";
#endif
#endif /* not lint */
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <err.h>
#include "mdef.h"
#include "stdd.h"
#include "extern.h"
#include "pathnames.h"
/*
* find the index of second str in the first str.
*/
ptrdiff_t
indx(s1, s2)
const char *s1;
const char *s2;
{
char *r;
r = strstr(s1, s2);
if (r)
return (r - s1);
else
return (-1);
}
/*
* putback - push character back onto input
*/
void
putback(c)
pbent c;
{
if (bp < endpbb)
*bp++ = c;
else
errx(1, "too many characters pushed back");
}
/*
* pbstr - push string back onto input
* putback is replicated to improve
* performance.
*/
void
pbstr(s)
register char *s;
{
register char *es;
pbent *zp;
es = s;
zp = bp;
while (*es)
es++;
es--;
while (es >= s)
if (zp < endpbb)
*zp++ = *es--;
if ((bp = zp) == endpbb)
errx(1, "too many characters pushed back");
}
/*
* pbnum - convert number to string, push back on input.
*/
void
pbnum(n)
int n;
{
register int num;
num = (n < 0) ? -n : n;
do {
putback(num % 10 + '0');
}
while ((num /= 10) > 0);
if (n < 0)
putback('-');
}
/*
* chrsave - put single char on string space
*/
void
chrsave(c)
char c;
{
if (ep < endest)
*ep++ = c;
else
errx(1, "string space overflow");
}
/*
* read in a diversion file, and dispose it.
*/
void
getdiv(n)
int n;
{
register int c;
if (active == outfile[n])
errx(1, "undivert: diversion still active");
rewind(outfile[n]);
while ((c = getc(outfile[n])) != EOF)
putc(c, active);
(void) fclose(outfile[n]);
}
void
onintr(signo)
int signo;
{
errx(1, "interrupted.");
}
/*
* killdiv - get rid of the diversion files
*/
void
killdiv()
{
register int n;
for (n = 0; n < MAXOUT; n++)
if (outfile[n] != NULL) {
(void) fclose(outfile[n]);
}
}
char *
xalloc(n)
unsigned long n;
{
register char *p = malloc(n);
if (p == NULL)
err(1, "malloc");
return p;
}
char *
xstrdup(s)
const char *s;
{
register char *p = strdup(s);
if (p == NULL)
err(1, "strdup");
return p;
}
void
usage()
{
fprintf(stderr, "usage: m4 [-Dname[=val]] [-Uname]\n");
exit(1);
}
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