hxstrutl.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: hxstrutl.cpp,v 1.9.32.3 2004/07/09 01:48:15 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (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.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * 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++)