/* $NetBSD: misc.c,v 1.15 2014/06/26 02:14:32 christos Exp $ */
/*-
* Copyright (c) 1992 Diomidis Spinellis.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Diomidis Spinellis of Imperial College, University of London.
*
* 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. 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.
*/
#include <sys/types.h>
#include <err.h>
#include <limits.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "defs.h"
#include "extern.h"
/*
* malloc with result test
*/
void *
xmalloc(size_t size)
{
void *p;
if ((p = malloc(size)) == NULL)
err(1, "malloc(%zu)", size);
return p;
}
/*
* realloc with result test
*/
void *
xrealloc(void *p, size_t size)
{
if (p == NULL) /* Compatibility hack. */
return (xmalloc(size));
if ((p = realloc(p, size)) == NULL)
err(1, "realloc(%zu)", size);
return p;
}
/*
* realloc with result test
*/
void *
xcalloc(size_t c, size_t n)
{
void *p;
if ((p = calloc(c, n)) == NULL)
err(1, "calloc(%zu, %zu)", c, n);
return p;
}
/*
* Return a string for a regular expression error passed. This is overkill,
* because of the silly semantics of regerror (we can never know the size of
* the buffer).
*/
char *
strregerror(int errcode, regex_t *preg)
{
char buf[1];
static char *oe;
size_t s;
if (oe != NULL)
free(oe);
s = regerror(errcode, preg, buf, 0);
oe = xmalloc(s);
(void)regerror(errcode, preg, oe, s);
return (oe);
}
