hx_morefiles.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 and/or licensor 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 ***** */
- /*
- This code was descended from Apple Sample Code, but the
- code may have been modified.
- */
- #include "hx_morefiles.h"
- #include <string.h>
- #ifndef _MAC_MACHO
- #include "datetimeutils.h"
- #endif
- #ifndef _CARBON
- #include "MoreFilesExtras.h"
- #else
- #include "MoreFilesX.h"
- #include "hxassert.h"
- #endif
- #include "hxstrutl.h"
- // FSpGetItemSpec
- //
- // Returns an FSSpec which contains everything but the name of an item contained in the
- // specified directory. This merely sets up the returned FSSpec so that the name of the item
- // can be copied into the FSSpec, or can easily be used in the FSMakeFSSpec call.
- //
- // GR 8/8/01 This was only used by FSpIterateDirectory, and was really inefficient, so it's gone now.
- //
- // FSpIterateDirectory
- //
- // Allows for easy iteration of a SINGLE directory. It does not look any deeper than
- // the directory with which it starts. This is to make it quick and easy.
- //
- // returns false when the file specified by the "index" is not valid, or any other error
- // happens. Returns true if a file was found at that index. The index starts at 1.
- //
- // Note: this is really inefficient if called repeatedly since it has to make an
- // extra call to PBGetCatInfo to figure out the directory's dirID. It is much
- // better to call FSpGetNthDirectoryItem, below, instead if you will be making
- // repeated calls.
- Boolean FSpIterateDirectory(FSSpec* dirSpec,short index,FSSpec* fileSpec)
- {
- OSErr err;
- long dirID;
- Boolean isDir;
-
- err = FSpGetDirectoryID(dirSpec, &dirID, &isDir);
- if ((err == noErr) && isDir)
- {
- err = FSpGetNthDirectoryItem(dirSpec->vRefNum, dirID, index, fileSpec);
- }
- return (err == noErr);
-
- }
- //
- // GetVRefnumFromIndex
- //
- // Returns the n'th item from the directory specified by vRefNum and dirID. Can return
- // a spec to a directory or to a file.
- //
- OSErr FSpGetNthDirectoryItem(short vRefNum, long parID, short index, FSSpec *theSpec)
- {
- OSErr err;
- CInfoPBRec cInfo;
-
- theSpec->vRefNum = vRefNum;
- theSpec->parID = parID;
-
- cInfo.hFileInfo.ioVRefNum = vRefNum;
- cInfo.hFileInfo.ioDirID = parID;
- cInfo.hFileInfo.ioNamePtr = theSpec->name;
- cInfo.hFileInfo.ioFDirIndex = index; // use vRefNum, dirID and index
- err = PBGetCatInfoSync(&cInfo);
-
- return err;
- }
- //
- // GetVRefnumFromIndex
- //
- // If the return value of this function is true, then the *realrefnum parameter contains
- // the RealRefNum of the volume at that index.
- //
- // the index starts at 1 and continues until you receive an error.
- //
- Boolean GetVRefnumFromIndex(short index,short *realRefNum) {
- Boolean theResult=false;
- OSErr err=noErr;
- HParamBlockRec pb;
-
- if (realRefNum==0L) goto CleanUp;
- memset(&pb,0,sizeof(ParamBlockRec));
-
- pb.volumeParam.ioVolIndex=index;
-
- err=PBHGetVInfoSync(&pb);
-
- *realRefNum=pb.volumeParam.ioVRefNum;
-
- theResult=(err==noErr);
- CleanUp:
- return(theResult);
- }
- //
- // GetVRefnumFromIndex
- //
- // If the return value of this function is true, then the *realrefnum parameter contains
- // the RealRefNum of the volume at that index.
- //
- // the index starts at 1 and continues until you receive an error.
- //
- //
- // This version only returns LOCAL UNLOCKED volumes, not remote or locked ones.
- //
- Boolean GetLocalVRefnumFromIndex(short *index, short *realRefNum)
- {
- Boolean theResult=false;
- OSErr err=noErr;
- ParamBlockRec pb;
- HParamBlockRec hpb;
- Boolean local;
- short theSize;
- OSType *volTypePtr;
-
- if (realRefNum==0L) goto CleanUp;
- do {
- (*index)++;
-
- // Get the next volume
- memset(&hpb,0,sizeof(HParamBlockRec));
- hpb.volumeParam.ioVolIndex = *index;
- err=PBHGetVInfoSync(&hpb);
- *realRefNum=hpb.volumeParam.ioVRefNum;
- theResult=(err==noErr);
- local = TRUE;
-
- if (theResult)
- {
- // Make sure it's unlocked
- if ((((unsigned short)hpb.volumeParam.ioVAtrb) & ((unsigned short)32896)) != 0)
- local = FALSE;
- else
- {
- // Make sure it's local
- memset(&pb,0,sizeof(ParamBlockRec));
- pb.ioParam.ioBuffer = (Ptr)&theSize;
- pb.ioParam.ioCompletion = NULL;
- pb.ioParam.ioVRefNum = *realRefNum;
- err = PBGetVolMountInfoSize(&pb);
- if (!err)
- {
- pb.ioParam.ioBuffer = NewPtr((long)theSize);
- err = PBGetVolMountInfo(&pb);
- if (!err)
- {
- volTypePtr = (OSType *) &((char *)pb.ioParam.ioBuffer)[2];
- if (*volTypePtr=='afpm') // AppleShare volume - we don't want these.
- local = FALSE;
- }
- DisposePtr((Ptr)pb.ioParam.ioBuffer);
- }
- }
- }
- } while (theResult && !local);
- CleanUp:
- return(theResult);
- }
- //
- // FSpGetVersion
- //
- // Retrieves the version number from a file specified by an FSSpec.
- //
- Boolean FSpGetVersion(FSSpec *theFile, Byte *majorversion,
- Byte *minorversion, Byte *revision) {
- Handle r=0L;
- short saveResFile;
- short theResFile=-1;
- short vers;
- Boolean theResult=false;
- saveResFile=CurResFile();
- if (theFile == 0L) goto CleanUp;
-
- theResFile=FSpOpenResFile(theFile,fsRdPerm);
- if (theResFile != -1) {
- r = GetResource('vers',1);
- if (r==0L) goto CleanUp;
-
- vers=(short)**r;
-
- if (majorversion != 0L) {
- *majorversion = (Byte)vers;
- }//if
-
- vers << sizeof(Byte);
-
- if (minorversion != 0L) {
- *minorversion = vers | 0xF0;
- }//if
-
- if (revision != 0L) {
- *revision = vers | 0x0F;
- }//if
-
- }//if
- CleanUp:
- //if (theResFile >=0) CloseResFile(theResFile);
- UseResFile(saveResFile);
- return(theResult);
- }
- //
- // FSpGetVersionLong
- //
- // Retrieves the version number from a file specified by an FSSpec. Returns it as a long.
- //
- Boolean FSpGetVersionLong(FSSpec *theFile, short *theversion) {
- Handle r=0L;
- short saveResFile;
- short theResFile=-1;
- Boolean theResult=false;
- saveResFile=CurResFile();
- if (theFile == 0L) goto CleanUp;
- if (theversion == 0L) goto CleanUp;
-
- theResFile=FSpOpenResFile(theFile,fsRdPerm);
- if (theResFile != -1) {
- r = GetResource('vers',1);
- if (r==0L) goto CleanUp;
-
- BlockMove(*r,theversion,sizeof(long));
-
- }//if
- CleanUp:
- //if (theResFile >=0) CloseResFile(theResFile);
- UseResFile(saveResFile);
- return(theResult);
- }
- //
- // FSpGetVersionMessage
- //
- // Retrieves the version message from a file specified by an FSSpec.
- //
- Boolean FSpGetVersionMessage(FSSpec *theFile, char *theversion, UINT32 ulBufLen) {
- Handle r=0L;
- short saveResFile;
- short theResFile=-1;
- Boolean theResult=false;
- Str255 message;
- saveResFile=CurResFile();
- if (theFile == 0L) goto CleanUp;
- if (theversion == 0L) goto CleanUp;
-
- theResFile=FSpOpenResFile(theFile,fsRdPerm);
- if (theResFile != -1) {
- r = GetResource('vers',1);
- if (r==0L) goto CleanUp;
-
- HLock(r);
- HNoPurge(r);
-
- *r+=(sizeof(Byte)*4)+sizeof(short);
-
- *r+=**r;
-
- BlockMove(*r,message,sizeof(Str255));
-
- #ifdef _CARBON
- p2cstrcpy((char*)message, message);
- #else
- p2cstr(message);
- #endif
-
- SafeStrCpy(theversion,(char *)message, ulBufLen);
-
- }//if
- CleanUp:
- //if (theResFile >=0) CloseResFile(theResFile);
- UseResFile(saveResFile);
- return(theResult);
- }
- //
- // FSpGetFileAge
- //
- // This function returns the age of a file relative to the current time.
- //
- // It is legal to pass in NULL if you don't want a particular age granularity.
- Boolean
- FSpGetFileAge(FSSpec* file,long* minutes,long* seconds,long* ticks)
- {
- HParmBlkPtr fileinfo=(HParmBlkPtr)NewPtrClear(sizeof(HParamBlockRec));
- Boolean theResult=false;
- unsigned long curseconds;
-
- GetDateTime(&curseconds); // seconds since 1904
- if (file == 0L) goto CleanUp;
- if (fileinfo == 0L) goto CleanUp;
- fileinfo->fileParam.ioNamePtr=file->name;
- fileinfo->fileParam.ioDirID=file->parID;
- fileinfo->fileParam.ioVRefNum=file->vRefNum;
-
- if (noErr != PBHGetFInfoSync(fileinfo)) goto CleanUp;
-
- if (ticks != NULL)
- {
- unsigned long createTicks = (fileinfo->fileParam.ioFlCrDat * 60);
- unsigned long curticks = curseconds * 60;
- *ticks=curticks - createTicks;
- if (*ticks < 0)
- *ticks = 0;
- }
- if (seconds != NULL)
- {
- unsigned long createSecs = fileinfo->fileParam.ioFlCrDat;
- *seconds=curseconds - createSecs;
- if (*seconds < 0)
- *seconds = 0;
- }
- if (minutes != NULL)
- {
- unsigned long createMinutes = fileinfo->fileParam.ioFlCrDat / 60;
- unsigned long curMinutes = curseconds / 60;
- *minutes = (curMinutes - createMinutes);
- if (*minutes < 0)
- *minutes = 0;
- }
-
- theResult=true;
-
- CleanUp:
- if (fileinfo != 0L) DisposePtr((Ptr)fileinfo);
- return (theResult);
- }
- Boolean
- IsFolder(FSSpec* spec)
- {
- long dirID;
- Boolean isDir;
- OSErr err;
-
- err = FSpGetDirectoryID(spec, &dirID, &isDir);
- return ((err == noErr) && isDir);
- }
- OSErr GetMoreVInfo(short volref, StringPtr name, unsigned long *volcreated, Boolean *islocked)
- {
- HVolumeParam block;
- OSErr err;
- memset(&block, 0x00, sizeof(block));
- block.ioVolIndex = 0;
- block.ioVRefNum = volref;
- block.ioNamePtr = name;
- err = PBHGetVInfoSync((HParmBlkPtr)&block);
- if (!err) {
- if (islocked) *islocked = (block.ioVAtrb & (1<<7)) != 0;
- if (volcreated) *volcreated = block.ioVCrDate;
- }
- return err;
- }
- #ifdef _CARBON
- // Stuff that used to be in MoreFilesExtras but isn't in MoreFilesX in FSSpec form
- OSErr FSpGetDirectoryID(const FSSpec* pDirSpec, long *pDirID, Boolean *pIsDir)
- {
- FSRef dirRef;
- Boolean isDir = false;
- long dirID = 0;
- OSErr err;
-
- err = FSpMakeFSRef(pDirSpec, &dirRef);
- if (err == noErr)
- {
- err = FSGetNodeID(&dirRef, &dirID, &isDir);
- }
-
- if (pDirID) *pDirID = dirID;
- if (pIsDir) *pIsDir = isDir;
- return err;
- }
- OSErr FSpMoveRenameCompat(const FSSpec * srcSpec, const FSSpec * dstSpec, ConstStr255Param copyName)
- {
- FSRef srcRef, destDirRef, newRef;
- HFSUniStr255 hfsUniName;
- OSErr err;
-
- err = FSpMakeFSRef(srcSpec, &srcRef);
- require_noerr(err, CantMakeSrcRef);
-
- err = FSpMakeFSRef(dstSpec, &destDirRef);
- require_noerr(err, CantMakeDestRef);
-
- if (copyName)
- {
- err = HFSNameGetUnicodeName(copyName, kTextEncodingUnknown, &hfsUniName);
- require_noerr(err, CantMakeUnicodeName);
- }
-
- err = FSMoveRename(&srcRef, &destDirRef, hfsUniName.length, copyName ? hfsUniName.unicode : NULL,
- kTextEncodingUnknown, &newRef);
- require_noerr(err, CantMoveRename);
-
- return noErr;
-
- // reverse-order cleanup
- CantMoveRename:
- CantMakeUnicodeName:
- CantMakeDestRef:
- CantMakeSrcRef:
-
- return err;
- }
- OSErr DeleteDirectory(short vRefNum, long dirID, ConstStr255Param name)
- {
- FSRef dirRef;
- OSErr err;
- err = FSMakeFSRef(vRefNum, dirID, name, &dirRef);
- if (err == noErr)
- {
- err = FSDeleteContainerContents(&dirRef);
- }
- return err;
- }
- OSErr FSpFileCopy(const FSSpec *srcSpec, const FSSpec *dstSpec, ConstStr255Param copyName,
- void *copyBufferPtr, long copyBufferSize, Boolean preflight)
- {
- // Ultimately, this should be replaced with a new one that accompanies MoreFilesX, but that's not
- // yet available from Apple
- void *pBuff = NULL;
- long dirID;
- Str255 newName;
- FSSpec newSpec;
- short srcRefNum = -1;
- short destRefNum = -1;
- FInfo fInfo;
- OSErr err;
-
- // get a buffer to use for copying
- if (copyBufferPtr)
- {
- pBuff = copyBufferPtr;
- }
- else
- {
- copyBufferSize = 16*1024;
- pBuff = NewPtr(copyBufferSize);
- }
- require_nonnull(pBuff, CantGetBuffer);
-
- // copy the name of the new file
- if (copyName)
- {
- BlockMoveData(©Name[0], &newName[0], 1 + copyName[0]);
- }
- else
- {
- BlockMoveData(&srcSpec->name[0], &newName[0], 1 + srcSpec->name[0]);
- }
-
- // make a new file; bail if it already exists
- err = FSpGetDirectoryID(dstSpec, &dirID, NULL);
- require_noerr(err, CantGetDirID);
-
- err = FSMakeFSSpec(dstSpec->vRefNum, dirID, newName, &newSpec);
- require(err == fnfErr, FileExistsAlready);
-
- // create the file
-
- err = FSpCreate(&newSpec, 0, 0, smSystemScript);
- require_noerr(err, CantMakeNewFile);
-
- // copy the data forks
-
- err = FSpOpenDF(srcSpec, fsRdPerm, &srcRefNum);
- require_noerr(err, CantOpenSourceDF);
-
- err = FSpOpenDF(&newSpec, fsRdWrPerm, &destRefNum);
- require_noerr(err, CantOpenDestDF);
-
- err = FSCopyFork(srcRefNum, destRefNum, pBuff, copyBufferSize);
- require_noerr(err, CantCopyDataFork);
-
- FSClose(srcRefNum);
- FSClose(destRefNum);
-
- srcRefNum = -1;
- destRefNum = -1;
- // copy the resource forks
-
- err = FSpOpenRF(srcSpec, fsRdPerm, &srcRefNum);
- require_noerr(err, CantOpenSourceRF);
-
- err = FSpOpenRF(&newSpec, fsRdWrPerm, &destRefNum);
- require_noerr(err, CantOpenDestRF);
-
- err = FSCopyFork(srcRefNum, destRefNum, pBuff, copyBufferSize);
- require_noerr(err, CantCopyResourceFork);
-
- FSClose(srcRefNum);
- FSClose(destRefNum);
-
- srcRefNum = -1;
- destRefNum = -1;
-
- // copy Finder info
- err = FSpGetFInfo(srcSpec, &fInfo);
- require_noerr(err, CantGetFInfo);
-
- fInfo.fdLocation.h = fInfo.fdLocation.v = 0;
- fInfo.fdFldr = 0;
- fInfo.fdFlags &= ~kHasBeenInited;
- err = FSpSetFInfo(&newSpec, &fInfo);
- require_noerr(err, CantSetFInfo);
-
- // we're done with the buffer; dispose it if we allocated it here
- if (copyBufferPtr == NULL)
- {
- DisposePtr((Ptr) pBuff);
- }
- return noErr;
- // reverse-order cleanup
- CantSetFInfo:
- CantGetFInfo:
- CantCopyResourceFork:
- CantOpenDestRF:
- CantOpenSourceRF:
- CantCopyDataFork:
- if (destRefNum != -1) FSClose(destRefNum);
- CantOpenDestDF:
- if (srcRefNum != -1) FSClose(srcRefNum);
- CantOpenSourceDF:
- FSpDelete(&newSpec);
- CantMakeNewFile:
- FileExistsAlready:
- CantGetDirID:
- if (pBuff && !copyBufferPtr)
- {
- DisposePtr((Ptr) pBuff);
- }
- CantGetBuffer:
- return err;
-
- }
- #endif