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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/lib/ppc405lib/strcasecmp.c $ */
/* */
/* OpenPOWER OnChipController Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
// $Id: strcasecmp.c,v 1.1.1.1 2013/12/11 20:49:20 bcbrock Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/lib/strcasecmp.c,v $
//-----------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2013
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//-----------------------------------------------------------------------------
/// \file strcasecmp.c
/// \brief Implementation of strcasecmp() and strncasecmp()
///
/// These routines are rarely used, hence broken out into a separate file to
/// save code space for most applications.
#include "ssx.h"
#include "string.h"
/// Compare two strings ignoring case
///
/// The strcasecmp() function compares the two strings \a s1 and \a s2,
/// ignoring the case of the characters. It returns an integer less than,
/// equal to, or greater than zero if \a s1 is found, respectively, to be less
/// than, to match, or be greater than \a s2.
int
strcasecmp(const char* s1, const char* s2)
{
int rc;
if (s1 == s2) {
rc = 0;
} else {
while(*s1 && (tolower(*s1) == tolower(*s2))) {
s1++;
s2++;
}
rc = *((unsigned char *)s1) - *((unsigned char *)s2);
}
return rc;
}
/// Compare a portion of two strings ignoring case
///
/// The strncmp() function compares at most the first \n characters of the two
/// strings \a s1 and \a s2, ignoring the case of the characters. It returns
/// an integer less than, equal to, or greater than zero if (the prefix of) \a
/// s1 is found, respectively, to be less than, to match, or be greater than
/// (the prefix of) \a s2.
int
strncasecmp(const char* s1, const char* s2, size_t n)
{
int rc;
if ((s1 == s2) || (n == 0)) {
rc = 0;
} else {
while(*s1 && (tolower(*s1) == tolower(*s2)) && n--) {
s1++;
s2++;
}
rc = *((unsigned char *)s1) - *((unsigned char *)s2);
}
return rc;
}
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