/**\file srUtils.c
 * \brief General utilties that fit nowhere else.
 *
 * The namespace for this file is "srUtil".
 *
 * \author  Rainer Gerhards <rgerhards@adiscon.com>
 * \date    2003-09-09
 *          Coding begun.
 *
 * Copyright 2003-2007 Rainer Gerhards and Adiscon GmbH.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * A copy of the GPL can be found in the file "COPYING" in this distribution.
 */

#include <stdlib.h>
#include <string.h>
#include "rsyslog.h"	/* THIS IS A MODIFICATION FOR RSYSLOG! 2004-11-18 rgerards */
#include "liblogging-stub.h"	/* THIS IS A MODIFICATION FOR RSYSLOG! 2004-11-18 rgerards */
#define TRUE 1
#define FALSE 0
#include "srUtils.h"
#include "assert.h"


/* ################################################################# *
 * private members                                                   *
 * ################################################################# */

/* As this is not a "real" object, there won't be any private
 * members in this file.
 */

/* ################################################################# *
 * public members                                                    *
 * ################################################################# */

rsRetVal srUtilItoA(char *pBuf, int iLenBuf, int iToConv)
{
	int i;
	int bIsNegative;
	char szBuf[32];	/* sufficiently large for my lifespan and those of my children... ;) */

	assert(pBuf != NULL);
	assert(iLenBuf > 1);	/* This is actually an app error and as thus checked for... */

	if(iToConv < 0)
	{
		bIsNegative = TRUE;
		iToConv *= -1;
	}
	else
		bIsNegative = FALSE;

	/* first generate a string with the digits in the reverse direction */
	i = 0;
	do
	{
		szBuf[i] = iToConv % 10 + '0';
		iToConv /= 10;
	} while(iToConv > 0);	/* warning: do...while()! */

	/* make sure we are within bounds... */
	if(i + 2 > iLenBuf)	/* +2 because: a) i starts at zero! b) the \0 byte */
		return RS_RET_PROVIDED_BUFFER_TOO_SMALL;

	/* then move it to the right direction... */
	if(bIsNegative == TRUE)
		*pBuf++ = '-';
	while(i >= 0)
		*pBuf++ = szBuf[i--];
	*pBuf = '\0';	/* terminate it!!! */

	return RS_RET_OK;
}

unsigned char *srUtilStrDup(unsigned char *pOld, size_t len)
{
	unsigned char *pNew;

	assert(pOld != NULL);
	assert(len >= 0);
	
	if((pNew = malloc(len + 1)) != NULL)
		memcpy(pNew, pOld, len + 1);

	return pNew;
}