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143 lines
3.4 KiB
143 lines
3.4 KiB
/*****************************************************************/
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/** Microsoft Windows for Workgroups **/
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/** Copyright (C) Microsoft Corp., 1991-1992 **/
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/*****************************************************************/
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/*
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strcmp.cxx
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NLS/DBCS-aware string class: strcmp method and equality operator
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This file contains the implementation of the strcmp method
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for the STRING class. It is separate so that clients of STRING which
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do not use this operator need not link to it.
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FILE HISTORY:
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beng 01/18/91 Separated from original monolithic .cxx
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beng 02/07/91 Uses lmui.hxx
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*/
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#include "npcommon.h"
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extern "C"
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{
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#include <netlib.h>
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}
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#if defined(DEBUG)
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static const CHAR szFileName[] = __FILE__;
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#define _FILENAME_DEFINED_ONCE szFileName
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#endif
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#include <npassert.h>
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#include <npstring.h>
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/*******************************************************************
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NAME: NLS_STR::operator==
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SYNOPSIS: Case-sensitive test for equality
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RETURNS: TRUE if the two operands are equal (case sensitive);
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else FALSE
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NOTES: An erroneous string matches nothing.
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HISTORY:
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johnl 11/11/90 Written
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beng 07/23/91 Allow on erroneous strings
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********************************************************************/
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BOOL NLS_STR::operator==( const NLS_STR & nls ) const
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{
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if (QueryError() || !nls)
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return FALSE;
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return !::strcmpf( QueryPch(), nls.QueryPch() );
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}
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/*******************************************************************
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NAME: NLS_STR::operator!=
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SYNOPSIS: Case-sensitive test for inequality
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RETURNS: TRUE if the two operands are unequal (case sensitive);
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else FALSE
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NOTES: An erroneous string matches nothing.
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HISTORY:
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beng 07/23/91 Header added
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********************************************************************/
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BOOL NLS_STR::operator!=( const NLS_STR & nls ) const
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{
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return ! operator==( nls );
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}
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/*******************************************************************
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NAME: NLS_STR::strcmp
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SYNOPSIS: Standard string compare with optional character indexes
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ENTRY: nls - string against which to compare
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istrStart1 (optional) - index into "this"
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istrStart2 (optional) - index into "nls"
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RETURNS: As the C runtime "strcmp".
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NOTES: If either string is erroneous, return "match."
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This runs contrary to the eqop.
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Glock doesn't allow default parameters which require
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construction; hence this member is overloaded multiply.
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HISTORY:
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johnl 11/15/90 Written
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johnl 11/19/90 Changed to use ISTR, overloaded for
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different number of ISTRs
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beng 07/23/91 Allow on erroneous strings;
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simplified CheckIstr
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********************************************************************/
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int NLS_STR::strcmp( const NLS_STR & nls ) const
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{
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if (QueryError() || !nls)
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return 0;
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return ::strcmpf( QueryPch(), nls.QueryPch() );
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}
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int NLS_STR::strcmp(
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const NLS_STR & nls,
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const ISTR & istrStart1 ) const
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{
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if (QueryError() || !nls)
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return 0;
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CheckIstr( istrStart1 );
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return ::strcmpf( QueryPch(istrStart1) , nls.QueryPch() );
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}
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int NLS_STR::strcmp(
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const NLS_STR & nls,
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const ISTR & istrStart1,
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const ISTR & istrStart2 ) const
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{
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if (QueryError() || !nls)
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return 0;
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CheckIstr( istrStart1 );
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nls.CheckIstr( istrStart2 );
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return ::strcmpf( QueryPch(istrStart1), nls.QueryPch(istrStart2) );
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}
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