source: trunk/kStuff/kHlp/Bare/kHlpBareStr.c@ 3574

/* $Id: kHlpBareStr.c 3574 2007-09-02 19:30:58Z bird $ */
/** @file
 * kHlpBare - String Manipulation.
 */

/*
 * Copyright (c) 2006-2007 knut st. osmundsen <bird-src-spam@anduin.net>
 *
 * This file is part of kStuff.
 *
 * kStuff is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * kStuff 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with kStuff; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

/*******************************************************************************
*   Header Files                                                               *
*******************************************************************************/
#include <k/kHlpString.h>


KSIZE  kHlpStrNLen(const char *psz, KSIZE cchMax)
{
    const char * const pszStart = psz;
    while (*psz && cchMax--)
        psz++;
    return psz - pszStart;
}


int     kHlpMemICompAscii(const void *pv1, const void *pv2, KSIZE cb)
{
    const KU8 *pb1 = (const KU8 *)pv1;
    const KU8 *pb2 = (const KU8 *)pv2;
    while (cb-- > 0)
    {
        if (*pb1 != *pb2)
        {
            const KU8 u1 = *pb1 >= 'a' && *pb1 <= 'z' ? *pb1 - 'a' : *pb1;
            const KU8 u2 = *pb2 >= 'a' && *pb2 <= 'z' ? *pb2 - 'a' : *pb2;
            if (u1 != u2)
                return (int)*pb1 - (int)*pb2;
        }
        pb1++;
        pb2++;
    }
    return 0;
}


int     kHlpStrICompAscii(const char *pv1, const char *pv2)
{
    const KU8 *pb1 = (const KU8 *)pv1;
    const KU8 *pb2 = (const KU8 *)pv2;
    for (;;)
    {
        if (*pb1 != *pb2)
        {
            const KU8 u1 = *pb1 >= 'a' && *pb1 <= 'z' ? *pb1 - 'a' : *pb1;
            const KU8 u2 = *pb2 >= 'a' && *pb2 <= 'z' ? *pb2 - 'a' : *pb2;
            if (u1 != u2)
                return (int)*pb1 - (int)*pb2;
        }
        if (!*pb1)
            break;
        pb1++;
        pb2++;
    }
    return 0;
}


#ifdef kHlpStrChr_needed
char   *kHlpStrChr(const char *psz, int ch)
{
    while (*psz)
    {
        if (*psz == ch)
            return (char *)psz;
        psz++;
    }
    return NULL;
}
#endif


#ifdef kHlpMemChr_needed
void   *kHlpMemChr(const void *pv, int ch, KSIZE cb)
{
    const KU8 *pb = (const KU8 *)pv;
    const KU8  b = (KU8)ch;
    while (cb-- > 0)
    {
        if (*pb == b)
            return (void *)pb;
        pb++;
    }
    return NULL;
}
#endif


#ifdef kHlpMemMove_needed
void   *kHlpMemMove(void *pv1, const void *pv2, KSIZE cb)
{
    KU8            *pbDst = (KU8 *)pv1;
    const KU8      *pbSrc = (const KU8 *)pv2;
    while (cb-- > 0)
    {
        const KU8 b = *pbSrc++;
        *pbDst++ = b;
    }
    return pv1;
}
#endif


#ifdef kHlpStrNComp_needed
int     kHlpStrNComp(const char *psz1, const char *psz2, KSIZE cch)
{
    while (cch-- > 0)
    {
        if (*psz1 != *psz2)
            return (int)*psz1 - (int)*psz2;
        if (!*psz1)
            break;
        psz1++;
        psz2++;
    }
    return 0;
}
#endif