自学教程：C++ BlockMoveData函数代码示例

pascal	OSErr	ResolveFileIDRef(ConstStr255Param volName,								 short vRefNum,								 long fileID,								 long *parID,								 StringPtr fileName){	HParamBlockRec pb;	OSErr error;	Str255 tempStr;		tempStr[0] = 0;	if ( volName != NULL )	{		BlockMoveData(volName, tempStr, volName[0] + 1);	}	pb.fidParam.ioNamePtr = (StringPtr)tempStr;	pb.fidParam.ioVRefNum = vRefNum;	pb.fidParam.ioFileID = fileID;	error = PBResolveFileIDRefSync(&pb);	if ( error == noErr )	{		*parID = pb.fidParam.ioSrcDirID;		if ( fileName != NULL )		{			BlockMoveData(tempStr, fileName, tempStr[0] + 1);		}	}	return ( error );}

UInt32 RingBuffer::Reallocate(UInt32 inBufferByteSize) {    Byte *bptr = NULL;    UInt32 data_size = 0;    // can't decrease the size at the moment    if (inBufferByteSize > mBSize) {        bptr = new Byte[inBufferByteSize * 2];        data_size = GetDataAvailable();        if (mNeedsWrapping) {            UInt32 headBytes = mBSize - mBStart;            BlockMoveData(mBuffer + mBStart, bptr, headBytes);            BlockMoveData(mBuffer, bptr + headBytes, mBEnd);            mNeedsWrapping = false;        } else {            BlockMoveData(mBuffer + mBStart, bptr, data_size);        }        mBEnd = data_size;        mBStart = 0;        delete[] mBuffer;        mBuffer = bptr;        mBSize = inBufferByteSize;    }    return mBSize;}

void LoadImportPLUG( MADLibrary		*inMADDriver, short	No, FSSpec	*theSpec){	Handle		theRes;	short		fileID;	Str255		tStr;		inMADDriver->ThePlug[ No].file = *theSpec;		{		Boolean		targetIsFolder, wasAliased;				ResolveAliasFile( &inMADDriver->ThePlug[ No].file, true, &targetIsFolder, &wasAliased);	}	pStrCpy( inMADDriver->ThePlug[ No].filename, inMADDriver->ThePlug[ No].file.name);		fileID = FSpOpenResFile( theSpec, fsCurPerm);		/** CODE du Plug-in **/		GetIndString( tStr, 1000, 1);	BlockMoveData( tStr + 1, &inMADDriver->ThePlug[ No].type, 4);	inMADDriver->ThePlug[ No].type[ 4] = 0;		GetIndString( tStr, 1000, 2);	BlockMoveData( tStr + 1, &inMADDriver->ThePlug[ No].mode, 4);		GetIndString( inMADDriver->ThePlug[ No].MenuName, 1000, 3);	GetIndString( inMADDriver->ThePlug[ No].AuthorString, 1000, 4);		CloseResFile( fileID);}

OSErr GetFullPath( const FSSpec* spec, Str255 fullPath){	CInfoPBRec		myPB;	Str255		dirName;	OSErr		myErr;	 	fullPath[0] = '/0';	BlockMoveData(spec->name, fullPath, spec->name[spec->name[0]]+1 );		myPB.dirInfo.ioNamePtr = dirName;	myPB.dirInfo.ioVRefNum = spec->vRefNum;	myPB.dirInfo.ioDrParID = spec->parID;	myPB.dirInfo.ioFDirIndex = -1;								do{		myPB.dirInfo.ioDrDirID = myPB.dirInfo.ioDrParID;		myErr = PBGetCatInfoSync(&myPB);				dirName[0]++;		dirName[ dirName[0] ]=':';		if( dirName[0]+fullPath[0]>=254 ){ fullPath[0]=0; return 1; }		BlockMoveData(fullPath+1, dirName+dirName[0]+1, fullPath[0]);		dirName[0]+=fullPath[0];		BlockMoveData(dirName, fullPath, dirName[0]+1);	}while( !(myPB.dirInfo.ioDrDirID == fsRtDirID) );	return noErr; }

void NScanResource( MADLibrary *inMADDriver){	short	i;	#define BASERES	1000		for( i = 0; i < MAXPLUG; i++)	{		Boolean ResourceOK;		Handle	aRes, bRes;				ResourceOK = true;				aRes = MADGet1Resource( 'CODE', BASERES + i, inMADDriver);		if( aRes == NULL) ResourceOK = false;		else		{			DisposeHandle( aRes);			aRes = NULL;		}				bRes = MADGet1Resource( 'STR#', BASERES + i, inMADDriver);		if( bRes == NULL) ResourceOK = false;		else		{			DisposeHandle( bRes);			bRes = NULL;		}				if( inMADDriver->TotalPlug < MAXPLUG && ResourceOK == true)		{			short		No = inMADDriver->TotalPlug;			Handle		theRes;			Str255		tStr;					//	theName = LMGetCurApName();						HGetVol( NULL, &inMADDriver->ThePlug[ No].file.vRefNum, &inMADDriver->ThePlug[ No].file.parID);			pStrCpy( inMADDriver->ThePlug[ No].file.name, RSRCNAME);						/** CODE du Plug-in **/						GetIndString( tStr, BASERES+i, 1);			BlockMoveData( tStr + 1, &inMADDriver->ThePlug[ No].type, 4);			inMADDriver->ThePlug[ No].type[ 4] = 0;						GetIndString( tStr, BASERES+i, 2);			BlockMoveData( tStr + 1, &inMADDriver->ThePlug[ No].mode, 4);						GetIndString( inMADDriver->ThePlug[ No].MenuName, BASERES+i, 3);			GetIndString( inMADDriver->ThePlug[ No].AuthorString, BASERES+i, 4);						inMADDriver->TotalPlug++;		}	}}

static void  CopyCatalogNodeInfo( CatalogRecord *src, CatalogRecord *dest ){	dest->hfsFile.dataLogicalSize	= src->hfsFile.dataLogicalSize;	dest->hfsFile.dataPhysicalSize = src->hfsFile.dataPhysicalSize;	dest->hfsFile.rsrcLogicalSize	= src->hfsFile.rsrcLogicalSize;	dest->hfsFile.rsrcPhysicalSize = src->hfsFile.rsrcPhysicalSize;	dest->hfsFile.modifyDate = src->hfsFile.modifyDate;	BlockMoveData( src->hfsFile.dataExtents, dest->hfsFile.dataExtents, sizeof(HFSExtentRecord) );	BlockMoveData( src->hfsFile.rsrcExtents, dest->hfsFile.rsrcExtents, sizeof(HFSExtentRecord) );}

static CWResult LinkHeaders(CWPluginContext context, XPIDLSettings& settings){	// find out how many files there are to link.	long fileCount = 0;	CWResult err = CWGetProjectFileCount(context, &fileCount);	if (err != cwNoErr || fileCount == 0)		return err;	// get the output directory.	FSSpec outputDir;	err = CWGetOutputFileDirectory(context, &outputDir);	if (!CWSUCCESS(err))		return err;		// enumerate all of the output header files, and make aliases to them in	// the output directory.	for (long index = 0; (err == cwNoErr) && (index < fileCount); index++) {		// get the name of each output file.		CWFileSpec outputFile;		err = CWGetStoredObjectFileSpec(context, index, &outputFile);		if (err == cwNoErr) {			FInfo info;			err = FSpGetFInfo(&outputFile, &info);						FSSpec aliasFile = { outputDir.vRefNum, outputDir.parID };			BlockMoveData(outputFile.name, aliasFile.name, 1 + outputFile.name[0]);						AliasHandle alias = NULL;			if (NewAliasMinimal(&outputFile, &alias) == noErr) {				// recreate the alias file from scratch.				FSpDelete(&aliasFile);				FSpCreateResFile(&aliasFile, info.fdCreator, info.fdType, smRoman);				short refNum = FSpOpenResFile(&aliasFile, fsRdWrPerm);				if (refNum != -1) {					UseResFile(refNum);					AddResource(Handle(alias), rAliasType, 0, aliasFile.name);					ReleaseResource(Handle(alias));					UpdateResFile(refNum);					CloseResFile(refNum);				}				// finally, mark the newly created file as an alias file.				FSpGetFInfo(&aliasFile, &info);				info.fdFlags |= kIsAlias;				FSpSetFInfo(&aliasFile, &info);			}		}	}		// create the target file in the output directory.	BlockMoveData(settings.output, outputDir.name, 1 + settings.output[0]);	FILE* outputFile = FSp_fopen(&outputDir, "w");	if (outputFile != NULL) fclose(outputFile);	return err;}

int  SDL_SYS_CDInit(void){	SInt16			dRefNum = 0;	SInt16			first, last;	SDL_numcds = 0;	/* Check that the software is available */	if (Gestalt(kGestaltAudioCDSelector, &SDL_cdversion) || 			!SDL_cdversion) return(0);	/* Fill in our driver capabilities */	SDL_CDcaps.Name = SDL_SYS_CDName;	SDL_CDcaps.Open = SDL_SYS_CDOpen;	SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;	SDL_CDcaps.Status = SDL_SYS_CDStatus;	SDL_CDcaps.Play = SDL_SYS_CDPlay;	SDL_CDcaps.Pause = SDL_SYS_CDPause;	SDL_CDcaps.Resume = SDL_SYS_CDResume;	SDL_CDcaps.Stop = SDL_SYS_CDStop;	SDL_CDcaps.Eject = SDL_SYS_CDEject;	SDL_CDcaps.Close = SDL_SYS_CDClose;	/* Walk the list, count each AudioCD driver, and save the refnums */	first = -1;	last = 0 - LMGetUnitTableEntryCount();	for(dRefNum = first; dRefNum >= last; dRefNum--) {		Str255		driverName;		StringPtr	namePtr;		DCtlHandle	deviceEntry;		deviceEntry = GetDCtlEntry(dRefNum);		if (! deviceEntry) continue;				/* Is this an .AppleCD ? */		namePtr = (*deviceEntry)->dCtlFlags & (1L << dRAMBased) ?				((StringPtr) ((DCtlPtr) deviceEntry)->dCtlDriver + 18) :				((StringPtr) (*deviceEntry)->dCtlDriver + 18);		BlockMoveData(namePtr, driverName, namePtr[0]+1);		if (driverName[0] > gDriverName[0]) driverName[0] = gDriverName[0];		if (! EqualString(driverName, gDriverName, false, false)) continue;		/* Record the basic info for each drive */		SDL_cdlist[SDL_numcds].dRefNum = dRefNum;		BlockMoveData(namePtr + 1, SDL_cdlist[SDL_numcds].name, namePtr[0]);		SDL_cdlist[SDL_numcds].name[namePtr[0]] = 0;		SDL_cdlist[SDL_numcds].hasAudio = false;		SDL_numcds++;	}	return(0);}

int  SDL_SYS_CDInit(void){	SInt16			dRefNum = 0;	SInt16			first, last;	SDL_numcds = 0;		if (Gestalt(kGestaltAudioCDSelector, &SDL_cdversion) || 			!SDL_cdversion) return(0);		SDL_CDcaps.Name = SDL_SYS_CDName;	SDL_CDcaps.Open = SDL_SYS_CDOpen;	SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;	SDL_CDcaps.Status = SDL_SYS_CDStatus;	SDL_CDcaps.Play = SDL_SYS_CDPlay;	SDL_CDcaps.Pause = SDL_SYS_CDPause;	SDL_CDcaps.Resume = SDL_SYS_CDResume;	SDL_CDcaps.Stop = SDL_SYS_CDStop;	SDL_CDcaps.Eject = SDL_SYS_CDEject;	SDL_CDcaps.Close = SDL_SYS_CDClose;		first = -1;	last = 0 - LMGetUnitTableEntryCount();	for(dRefNum = first; dRefNum >= last; dRefNum--) {		Str255		driverName;		StringPtr	namePtr;		DCtlHandle	deviceEntry;		deviceEntry = GetDCtlEntry(dRefNum);		if (! deviceEntry) continue;						namePtr = (*deviceEntry)->dCtlFlags & (1L << dRAMBased) ?				((StringPtr) ((DCtlPtr) deviceEntry)->dCtlDriver + 18) :				((StringPtr) (*deviceEntry)->dCtlDriver + 18);		BlockMoveData(namePtr, driverName, namePtr[0]+1);		if (driverName[0] > gDriverName[0]) driverName[0] = gDriverName[0];		if (! EqualString(driverName, gDriverName, false, false)) continue;				SDL_cdlist[SDL_numcds].dRefNum = dRefNum;		BlockMoveData(namePtr + 1, SDL_cdlist[SDL_numcds].name, namePtr[0]);		SDL_cdlist[SDL_numcds].name[namePtr[0]] = 0;		SDL_cdlist[SDL_numcds].hasAudio = false;		SDL_numcds++;	}	return(0);}

OSErr PutFile (ConstStr255Param thePrompt, ConstStr255Param theFileName, FSSpecPtr theFSSpecPtr, Boolean *theIsSelected, Boolean *theIsReplacing){	NavReplyRecord		myReply;	NavDialogOptions		myDialogOptions;	NavEventUPP		myEventUPP = NewNavEventUPP(HandleNavEvent);	OSErr				myErr = noErr;	if ((theFSSpecPtr == NULL) || (theIsSelected == NULL) || (theIsReplacing == NULL))		return(paramErr);	// assume we are not replacing an existing file	*theIsReplacing = false;        *theIsSelected = false;	// specify the options for the dialog box	NavGetDefaultDialogOptions(&myDialogOptions);	myDialogOptions.dialogOptionFlags += kNavNoTypePopup;	myDialogOptions.dialogOptionFlags += kNavDontAutoTranslate;	BlockMoveData(theFileName, myDialogOptions.savedFileName, theFileName[0] + 1);	BlockMoveData(thePrompt, myDialogOptions.message, thePrompt[0] + 1);	// prompt the user for a file	myErr = NavPutFile(NULL, &myReply, &myDialogOptions, myEventUPP, MovieFileType, sigMoviePlayer, NULL);	if ((myErr == noErr) && myReply.validRecord)    {		AEKeyword		myKeyword;		DescType		myActualType;		Size			myActualSize = 0;		// get the FSSpec for the selected file		if (theFSSpecPtr != NULL)			myErr = AEGetNthPtr(&(myReply.selection), 1, typeFSS, &myKeyword, &myActualType, theFSSpecPtr, sizeof(FSSpec), &myActualSize);                *theIsSelected = myReply.validRecord;                if (myReply.validRecord)                {                    *theIsReplacing = myReply.replacing;                }		NavDisposeReply(&myReply);	}	DisposeNavEventUPP(myEventUPP);	return(myErr);}

void moveright (ptrvoid psource, ptrvoid pdest, long length) {    /*    do a mass memory move with the right edge leading.  good for opening    up a gap in a buffer, among other things
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