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/* $Id: kHlpInt2Ascii.c 113 2018-07-12 11:34:27Z bird $ */
/** @file
* kHlpString - kHlpInt2Ascii.
*/
/*
* Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <k/kHlpString.h>
/**
* Converts an signed integer to an ascii string.
*
* @returns psz.
* @param psz Pointer to the output buffer.
* @param cch The size of the output buffer.
* @param lVal The value.
* @param iBase The base to format it. (2,8,10 or 16)
*/
KHLP_DECL(char *) kHlpInt2Ascii(char *psz, KSIZE cch, long lVal, unsigned iBase)
{
static const char s_szDigits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
char *pszRet = psz;
if (psz != NULL)
{
if (cch >= (lVal < 0 ? 3U : 2U))
{
/* prefix */
if (lVal < 0)
{
*psz++ = '-';
cch--;
lVal = -lVal;
}
/* the digits */
do
{
*psz++ = s_szDigits[lVal % iBase];
cch--;
lVal /= iBase;
} while (lVal && cch > 1);
/* overflow indicator */
if (lVal)
psz[-1] = '+';
}
else if (cch > 1)
*psz++ = '+';
else if (cch < 1)
return pszRet;
*psz = '\0';
}
return pszRet;
}
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