105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
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/*****************************************************************/
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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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strdss.cxx
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NLS/DBCS-aware string class: DelSubStr method
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This file contains the implementation of the DelSubStr 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::DelSubStr
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SYNOPSIS: Collapse the string by removing the characters from
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istrStart to:
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istrStart to the end of string
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istrStart + istrEnd
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The string is not reallocated
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ENTRY:
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EXIT: Modifies istrStart
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NOTES: The method DelSubStr( ISTR&, CB) is private and does
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the work.
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HISTORY:
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johnl 11/26/90 Created
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beng 04/26/91 Replaced CB with INT
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beng 07/23/91 Allow on erroneous strings; simplified CheckIstr
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********************************************************************/
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VOID NLS_STR::DelSubStr( ISTR & istrStart, INT cbLen )
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{
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if (QueryError())
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return;
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CheckIstr( istrStart );
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// cbLen == -1 means delete to end of string
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if ( cbLen == -1 )
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*(_pchData + istrStart.QueryIB() ) = '\0';
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else
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{
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INT cbNewEOS = 1 + ::strlenf( QueryPch(istrStart) + cbLen );
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::memmovef( (CHAR *)QueryPch(istrStart),
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(CHAR *)QueryPch(istrStart) + cbLen,
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cbNewEOS );
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}
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_cchLen = ::strlenf( QueryPch() );
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IncVers();
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UpdateIstr( &istrStart );
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}
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VOID NLS_STR::DelSubStr( ISTR & istrStart )
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{
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if (QueryError())
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return;
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DelSubStr( istrStart, -1 );
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}
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VOID NLS_STR::DelSubStr( ISTR & istrStart, const ISTR & istrEnd )
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{
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if (QueryError())
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return;
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CheckIstr( istrEnd );
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UIASSERT( istrEnd.QueryIB() >= istrStart.QueryIB() );
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DelSubStr( istrStart, istrEnd - istrStart );
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}
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