windows-nt/Source/XPSP1/NT/shell/ext/ratings/common/strnicmp.cpp
2020-09-26 16:20:57 +08:00

104 lines
2.2 KiB
C++

/*****************************************************************/
/** Microsoft Windows for Workgroups **/
/** Copyright (C) Microsoft Corp., 1991-1992 **/
/*****************************************************************/
/*
strnicmp.cxx
NLS/DBCS-aware string class: strnicmp method
This file contains the implementation of the strnicmp method
for the STRING class. It is separate so that clients of STRING which
do not use this operator need not link to it.
FILE HISTORY:
beng 01/18/91 Separated from original monolithic .cxx
beng 02/07/91 Uses lmui.hxx
*/
#include "npcommon.h"
extern "C"
{
#include <netlib.h>
}
#if defined(DEBUG)
static const CHAR szFileName[] = __FILE__;
#define _FILENAME_DEFINED_ONCE szFileName
#endif
#include <npassert.h>
#include <npstring.h>
/*******************************************************************
NAME: NLS_STR::strnicmp
SYNOPSIS: Case insensitve string compare up to index position istrEnd
ENTRY:
EXIT:
NOTES:
HISTORY:
johnl 11/15/90 Written
beng 07/23/91 Allow on erroneous string; simplified CheckIstr
********************************************************************/
int NLS_STR::strnicmp(
const NLS_STR & nls,
const ISTR & istrEnd ) const
{
if (QueryError() || !nls)
return 0;
CheckIstr( istrEnd );
return ::strnicmpf( QueryPch(), nls.QueryPch(), istrEnd.QueryIB() );
}
int NLS_STR::strnicmp(
const NLS_STR & nls,
const ISTR & istrEnd,
const ISTR & istrStart1 ) const
{
if (QueryError() || !nls)
return 0;
UIASSERT( istrEnd.QueryIB() >= istrStart1.QueryIB() );
CheckIstr( istrEnd );
CheckIstr( istrStart1 );
return ::strnicmpf( QueryPch(istrStart1),
nls.QueryPch(),
istrEnd - istrStart1 );
}
int NLS_STR::strnicmp(
const NLS_STR & nls,
const ISTR & istrEnd,
const ISTR & istrStart1,
const ISTR & istrStart2 ) const
{
if (QueryError() || !nls)
return 0;
UIASSERT( istrEnd.QueryIB() >= istrStart1.QueryIB() );
UIASSERT( istrEnd.QueryIB() >= istrStart2.QueryIB() );
CheckIstr( istrEnd );
CheckIstr( istrStart1 );
nls.CheckIstr( istrStart2 );
return ::strnicmpf( QueryPch(istrStart1),
nls.QueryPch(istrStart2),
istrEnd - istrStart1 );
}