hxunicod.cpp
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上传日期:2007-06-06
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文件大小:4k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxtypes.h"
- #include "hlxclib/string.h"
- #include "hxassert.h"
- #include "hxunicod.h"
- #include "hxresult.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- //
- // Currently this function does a really simple conversion.
- // This is a cheater version, and it needs to be investigated.
- //
- HX_RESULT CHXUnicode::ProcessFromUnicode(const char* stringin, UINT16 length, char* stringout, UINT16 outlength)
- {
- HX_ASSERT(stringin);
- HX_ASSERT(stringout);
- ULONG32 newlength=0;
- char* newstring=new char[length];
- HX_RESULT result=HXR_OK;
- HX_ASSERT(newstring);
- if (!newstring)
- {
- return NULL;
- }
- const char* bytesin=NULL;
- char* bytesout=NULL;
- bytesin=stringin;
- bytesout=newstring;
- while (1)
- {
- if (bytesin[0]==0 && bytesin[1]==0)
- {
- break;
- }
- if (bytesin[1]==0)
- {
- newlength++;
- bytesout[0]=bytesin[0];
- bytesout++;
- bytesin+=2;
- }
- else
- {
- newlength+=2;
- bytesout[0]=bytesin[0];
- bytesout[1]=bytesin[1];
- bytesout+=2;
- bytesin+=2;
- }
- }
- HX_ASSERT(outlength >= newlength+1);
- if (outlength < newlength+1)
- {
- result=HXR_BUFFERTOOSMALL;
- goto CleanUp;
- }
- ::memset(stringout,NULL,(int)newlength+1);
- ::memcpy(stringout,newstring,(int)newlength); /* Flawfinder: ignore */
- CleanUp:
- if (newstring != NULL)
- {
- delete [] newstring;
- newstring=NULL;
- }
- return result;
- }
- //
- // Determine the length of the string.
- // This works for WIDE STRINGS ONLY!
- // This function does not returns the number of the characters only.
- // It does not return the length including the two trailing bytes.
- //
- ULONG32 CHXUnicode::StringLength(const char* stringin)
- {
- HX_ASSERT(stringin);
- ULONG32 length=0;
- const char* p=stringin;
- while (TRUE)
- {
- if (p[0]==0 && p[1]==0)
- {
- break;
- }
- length+=1;
- p+=2;
- }
- return length;
- }
- //
- // Determine the size of string.
- // This works for WIDE STRINGS ONLY!
- // This function returns the memory footprint of the string. Which is the
- // length of the string + 2 bytes.
- //
- ULONG32 CHXUnicode::StringMemLength(const char* stringin)
- {
- HX_ASSERT(stringin);
- ULONG32 length=0;
- const char* p=stringin;
- while (TRUE)
- {
- if (p[0]==0 && p[1]==0)
- {
- length+=2;
- p+=2;
- break;
- }
- length+=2;
- p+=2;
- }
- return length;
- }