/* $Id: xmalloc.c,v 1.1 2019/04/28 15:03:29 schwarze Exp $ */
/*
 * Copyright (c) 2019 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <sys/types.h>

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "xmalloc.h"

/*
 * The implementation of the exiting allocator functions.
 */

void *
xcalloc(size_t nmemb, size_t size)
{
	void	*p;

	if ((p = calloc(nmemb, size)) == NULL) {
		perror(NULL);
		exit(6);
	}
	return p;
}

void *
xrealloc(void *p, size_t size)
{
	if ((p = realloc(p, size)) == NULL) {
		perror(NULL);
		exit(6);
	}
	return p;
}

void *
xreallocarray(void *p, size_t nmemb, size_t size)
{
	if ((p = reallocarray(p, nmemb, size)) == NULL) {
		perror(NULL);
		exit(6);
	}
	return p;
}

char *
xstrdup(const char *in)
{
	char	*out;

	if ((out = strdup(in)) == NULL) {
		perror(NULL);
		exit(6);
	}
	return out;
}

char *
xstrndup(const char *in, size_t maxlen)
{
	char	*out;

	if ((out = strndup(in, maxlen)) == NULL) {
		perror(NULL);
		exit(6);
	}
	return out;
}

int
xasprintf(char **dest, const char *fmt, ...)
{
	va_list	 ap;
	int	 ret;

	va_start(ap, fmt);
	ret = vasprintf(dest, fmt, ap);
	va_end(ap);

	if (ret == -1) {
		perror(NULL);
		exit(6);
	}
	return ret;
}