hxstrutl.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** 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 "hxcom.h"
#include "hxtypes.h"
#include "hxresult.h"
#include "chxpckts.h"
#include "hxstrutl.h"
#include "hxassert.h"

#include "hlxclib/stdio.h"      //for vsnprintf

#ifdef _MACINTOSH

int CopyP2CString(ConstStr255Param inSource, char* outDest, int inDestLength)
{
	int outLength = 0;
	HX_ASSERT( inDestLength > 0 );
	if ( inSource )
	{
		outLength = *inSource++;
		outLength = min( outLength, ( inDestLength - 1 ) );
		int copiedLength = outLength;
		while ( copiedLength-- )
		{
			*outDest++ = *( char* ) inSource++;
		}
	}
	*outDest = '\0';
	return( outLength );
}

//
//	CopyC2PString converts the source C string to a destination
//	pascal string as it copies. The dest string will
//	be truncated to fit into an Str255 if necessary.
//  If the C String pointer is NULL, the pascal string's length is set to zero
//
void CopyC2PString(const char* inSource, Str255 outDest)
{
#ifdef _CARBON
	if (inSource == NULL) outDest[0] = 0;
	else CopyCStringToPascal(inSource, outDest);  // Carbon TextUtils.h call
#else
	short 	length  = 0;
	
	// handle case of overlapping strings
	if ( (void*)inSource == (void*)outDest )
	{
		unsigned char*		curdst = &outDest[1];
		unsigned char		thisChar;
				
		thisChar = *(const unsigned char*)inSource++;
		while ( thisChar != '\0' ) 
		{
			unsigned char	nextChar;
			
			// use nextChar so we don't overwrite what we are about to read
			nextChar = *(const unsigned char*)inSource++;
			*curdst++ = thisChar;
			thisChar = nextChar;
			
			if ( ++length >= 255 )
				break;
		}
	}
	else if ( inSource != NULL )
	{
		unsigned char*		curdst = &outDest[1];
		short 				overflow = 255;		// count down so test it loop is faster
		register char		temp;
	
		// Can't do the K&R C thing of 襴hile (*s++ = *t++)