copyfile.cpp
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上传日期:2007-06-06
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- /* ***** 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 <string.h>
- #include "hxtypes.h"
- #include "copyfile.h"
- OSErr DoCopyFile(FSSpec &srcSpec, FSSpec &dstSpec, Boolean moveflag)
- {
- FInfo dstinfo,srcinfo;
- OSErr err = noErr;
- short srcRefNum, dstRefNum;
- Ptr filePtr = nil;
- UINT32 dataleft,fsize,vleft;
- long numBytes, blockSize;
-
- if (EqualFSSpec(dstSpec, srcSpec)) return noErr;
- err = FSpDelete(&dstSpec);
- if (err && err != fnfErr) return err;
- if ((dstSpec.vRefNum == srcSpec.vRefNum) && moveflag) { // if on same volume, do it the easy way.
- FSSpec dstFolder;
-
- err = FSpRename(&srcSpec,dstSpec.name);
- if (err) return err;
-
- memcpy(&dstSpec.name[1],&srcSpec.name[1],srcSpec.name[0]); /* Flawfinder: ignore */
- dstSpec.name[0] = srcSpec.name[0];
- err = FSMakeFSSpec(dstSpec.vRefNum, dstSpec.parID,NULL, &dstFolder);
- if(err) return err;
- // if (err = FSSpecFromDirID(dstSpec.vRefNum, dstSpec.parID, dstFolder)) return err;
- err = FSpCatMove(&srcSpec,&dstFolder);
- if (err) return err;
- return noErr;
- }
- err = GetFileSize(srcSpec,&fsize);
- if (err) return err;
- vleft = GetVolumeFreeSpace(dstSpec.vRefNum);
-
- if (fsize > vleft) return dskFulErr;
-
- // Get all Finder information for the existing file
- err = FSpGetFInfo(&srcSpec,&srcinfo);
- if (err) goto here;
- // Create the data fork of the new file
- FSpCreateResFile(&dstSpec, srcinfo.fdCreator, srcinfo.fdType,smCurrentScript);
- err = ResError();
- if (err) goto here;
-
- err = FSpGetFInfo(&dstSpec, &dstinfo);
- if (err) goto here;
-
- vleft = 0;
- // Open up the data fork of the existing file. Copy the entire data fork of the
- // source file into the destination file.
- blockSize = 0;
- err = FSpOpenDF(&srcSpec, fsRdPerm, &srcRefNum);
- if (!err) GetEOF(srcRefNum,&blockSize);
- dataleft = blockSize;
- if (blockSize && !err) {
- do {
- filePtr = NewPtr(blockSize);
- if (!filePtr) blockSize = blockSize * 3L / 4L;
- } while (!filePtr);
-
- err = FSpOpenDF(&dstSpec, fsWrPerm, &dstRefNum);
- if (!err) {
- err = SetFPos(srcRefNum, fsFromStart, 0L);
- err = SetFPos(dstRefNum, fsFromStart, 0L);
- do {
- numBytes = min(blockSize,dataleft);
- err = FSRead(srcRefNum, &numBytes, filePtr);
- err = FSWrite(dstRefNum, &numBytes, filePtr);
- vleft += numBytes;
- dataleft -= numBytes;
- } while (dataleft);
- err = FSClose(dstRefNum);
- }
- DisposePtr(filePtr);
- }
- err = FSClose(srcRefNum);
- // Open up the resource fork of the existing file. Only if there is a resource fork on the
- // existing file do we create a resource fork for the new file. Copy the entire resource fork
- // of the source file into the destination file.
- blockSize = 0;
- err = FSpOpenRF(&srcSpec, fsRdPerm, &srcRefNum);
- if (!err) GetEOF(srcRefNum,&blockSize);
- dataleft = blockSize;
- if (blockSize && !err) {
- do {
- filePtr = NewPtr(blockSize);
- if (!filePtr) blockSize = blockSize * 3L / 4L;
- } while (!filePtr);
- err = FSpOpenRF(&dstSpec, fsWrPerm, &dstRefNum);
- if (!err) {
- err = SetEOF(dstRefNum, 0L); // set to zip
- err = SetFPos(srcRefNum, fsFromStart, 0L);
- err = SetFPos(dstRefNum, fsFromStart, 0L);
- do {
- numBytes = min(blockSize,dataleft);
- err = FSRead(srcRefNum, &numBytes, filePtr);
- err = FSWrite(dstRefNum, &numBytes, filePtr);
- vleft += numBytes;
- dataleft -= numBytes;
- } while (dataleft);
- err = FSClose(dstRefNum);
- }
- DisposePtr(filePtr);
- }
- err = FSClose(srcRefNum);
- // Restore the (almost) exact finder information as the original source file
- srcinfo.fdLocation.h =
- srcinfo.fdLocation.v = -1;
- err = FSpSetFInfo(&dstSpec, &srcinfo);
-
- here:
- if (moveflag) return FSpDelete(&srcSpec);
- return noErr;
- }
- long GetVolumeFreeSpace(short vRefNum)
- {
- #ifdef _CARBON
- // xxxbobclark PBXGetVolInfoSync exists in OS 8.5 and later, but still
- // I'll leave the old code there for all non-Carbon. By only using it
- // in Carbon code we'll never even risk calling it accidentally.
- XVolumeParam xpb;
- xpb.ioCompletion = NULL;
- xpb.ioNamePtr = NULL;
- xpb.ioVRefNum = vRefNum;
-
- OSErr err = PBXGetVolInfoSync(&xpb);
-
- if (err) return 0;
-
- if (xpb.ioVFreeBytes > 0x000000007fffffff)
- {
- return 0x7fffffff;
- }
-
- return (long)xpb.ioVFreeBytes;
-
- #else
- HVolumeParam block;
- OSErr err;
- long freeSpace = 0L;
- Str255 volname = {0};
- memset(&block,0,sizeof(HVolumeParam));
- block.ioVRefNum = vRefNum;
- err = PBHGetVInfoSync((HParmBlkPtr)&block);
- if (!err) {
- err = GetVInfo(block.ioVDrvInfo,volname,&vRefNum,&freeSpace);
- }
- return freeSpace;
- #endif
- }
- Boolean EqualFSSpec(FSSpec &srcSpec, FSSpec &dstSpec)
- {
- Boolean bEqual = srcSpec.vRefNum == dstSpec.vRefNum;
-
- if(bEqual)
- {
- bEqual = srcSpec.parID == dstSpec.parID;
- }
- if(bEqual)
- {
- bEqual = srcSpec.name[0] == dstSpec.name[0];
- }
-
- if(bEqual)
- {
- bEqual = memcmp(&srcSpec.name[1],&dstSpec.name[1],srcSpec.name[0]) == 0;
- }
- return bEqual;
- }
- OSErr GetFileSize(FSSpec &srcSpec,UINT32 *fsize)
- {
- short srcRefNum;
- OSErr err = FSpOpenDF(&srcSpec, fsRdPerm, &srcRefNum);
-
- if (!err)
- {
- err = GetEOF(srcRefNum,(long*)fsize);
- FSClose(srcRefNum);
- }
-
- if(err)
- {
- *fsize = 0;
- }
-
- return err;
- }