strncmp.cpp
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上传日期:2007-02-14
资源大小:24088k
文件大小:2k
源码类别:
系统编程
开发平台:
Visual C++
- /*****************************************************************/
- /** Microsoft Windows for Workgroups **/
- /** Copyright (C) Microsoft Corp., 1991-1992 **/
- /*****************************************************************/
- /*
- strncmp.cxx
- NLS/DBCS-aware string class: strncmp method
- This file contains the implementation of the strncmp 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::strncmp
- SYNOPSIS: Case sensitve string compare up to index position istrLen
- ENTRY:
- EXIT:
- NOTES:
- HISTORY:
- johnl 11/15/90 Written
- beng 07/23/91 Allow on erroneous string; simplified CheckIstr
- ********************************************************************/
- INT NLS_STR::strncmp(
- const NLS_STR & nls,
- const ISTR & istrEnd ) const
- {
- if (QueryError() || !nls)
- return 0;
- CheckIstr( istrEnd );
- return ::strncmpf( QueryPch(), nls.QueryPch(), istrEnd.QueryIB() );
- }
- INT NLS_STR::strncmp(
- 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 ::strncmpf( QueryPch(istrStart1),
- nls.QueryPch(),
- istrEnd - istrStart1 );
- }
- INT NLS_STR::strncmp(
- 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 ::strncmpf( QueryPch(istrStart1),
- nls.QueryPch(istrStart2),
- istrEnd - istrStart1 );
- }
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