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/* This file is part of libbrandt.
 * Copyright (C) 2016 GNUnet e.V.
 *
 * libbrandt is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * libbrandt is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * libbrandt.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * @file util.c
 * @brief TODO
 */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "util.h"

static void xvprintf (const char *, va_list);

/**
 * eprintf
 *
 * @param fmt TODO
 * @param
 */
void
eprintf (const char *fmt, ...)
{
	va_list ap;

	va_start (ap, fmt);
	xvprintf (fmt, ap);
	va_end (ap);

	abort ();
}

/**
 * weprintf
 *
 * @param fmt TODO
 * @param
 */
void
weprintf (const char *fmt, ...)
{
	va_list ap;

	va_start (ap, fmt);
	xvprintf (fmt, ap);
	va_end (ap);
}

/**
 * xvprintf
 *
 * @param fmt TODO
 * @param ap TODO
 */
void
xvprintf (const char *fmt, va_list ap)
{
	/**TODO: provide other logging target than stderr */
	fputs ("libbrandt: ", stderr);

	vfprintf (stderr, fmt, ap);

	if (fmt[0] && fmt[strlen (fmt) - 1] == ':')
	{
		fputc (' ', stderr);
		perror (NULL);
	}
	else
	{
		fputc ('\n', stderr);
	}
}