macbin3.c

压缩解压,是unzip540的升级,这个外国网站摘来的源码,是evb编写.

                HLock(data);
                err = FSWrite(dfRefNum,&inOutCount,*data);
                HUnlock(data);
                FSClose(dfRefNum);
                }
            }
        DisposeHandle(data);
        }
    return err;
}





static Handle EncodeMacbinary(FSSpec *file)
{
    Handle result = nil;
    FInfo   fndrInfo;
    FXInfo  fndrXInfo;
    OSErr   err;
    CInfoPBRec  pb;
    short   dfRefNum, rfRefNum;
    long    ioCount;
    char    buffer[128];
    char    header[128];
    char    comment[256];
    long    resourceForkLength, dataForkLength, commentLength;

    memset(&header, 0, sizeof(header));
    err = FSpGetFInfo(file, &fndrInfo);

    memset(&pb, 0, sizeof(CInfoPBRec));
    pb.hFileInfo.ioNamePtr = file->name;
    pb.hFileInfo.ioVRefNum = file->vRefNum;
    pb.hFileInfo.ioFDirIndex = 0;           //query a file
    pb.hFileInfo.ioDirID = file->parID;
    err = PBGetCatInfo(&pb,false);

    fndrXInfo = pb.hFileInfo.ioFlXFndrInfo;

    BYTE_AT_OFFSET(header, kFileNameLengthOffset) = file->name[0];
    BlockMoveData( &(file->name[1]),
                   PTR_AT_OFFSET(header,
                   kFileNameOffset),
                   file->name[0]);
    LONG_AT_OFFSET(header, kFileTypeOffset)    = fndrInfo.fdType;
    LONG_AT_OFFSET(header, kFileCreatorOffset) = fndrInfo.fdCreator;

    BYTE_AT_OFFSET(header, kFinderFlagsHiOffset) =
                                          (fndrInfo.fdFlags & 0xFF00) >> 8;
    BYTE_AT_OFFSET(header, kFinderFlagsLowOffset) =
                                          (fndrInfo.fdFlags & 0x00FF);

    WORD_AT_OFFSET(header, kFileVPositionOffset) = fndrInfo.fdLocation.v;
    WORD_AT_OFFSET(header, kFileHPositionOffset) = fndrInfo.fdLocation.h;
    WORD_AT_OFFSET(header, kFileFolderIDOffset)  = fndrInfo.fdFldr;

    LONG_AT_OFFSET(header, kFileCreationDateOffset) = pb.hFileInfo.ioFlCrDat;
    LONG_AT_OFFSET(header, kFileModificationDateOffset) =
                                                      pb.hFileInfo.ioFlMdDat;

    LONG_AT_OFFSET(header, kMacbinarySigOffset)        = 'mBIN';
    BYTE_AT_OFFSET(header, kFilenameScriptOffset)      = fndrXInfo.fdScript;
    BYTE_AT_OFFSET(header, kExtendedFinderFlagsOffset) = fndrXInfo.fdXFlags;

    LONG_AT_OFFSET(header, kTotalFileLengthOffset) = 0;
    WORD_AT_OFFSET(header, kSecondaryHeaderLengthOffset) = 0;

    WORD_AT_OFFSET(header, kCurrentVersionOffset) = 130;
    WORD_AT_OFFSET(header, kMinimumVersionOffset) = 129;

    err = FSpOpenDF(file,fsRdPerm,&dfRefNum);
    if(err == noErr)
        {
        err = GetEOF(dfRefNum,&dataForkLength);
        LONG_AT_OFFSET(header, kDataForkLengthOffset) = dataForkLength;
        }
    else
        {
        dfRefNum = 0;
        }

    err = FSpOpenRF(file,fsRdPerm,&rfRefNum);
    if(err == noErr)
        {
        err = GetEOF(rfRefNum,&resourceForkLength);
        LONG_AT_OFFSET(header, kResourceForkLengthOffset) = resourceForkLength;
        }
    else
        {
        rfRefNum = 0;
        }

    memset(comment, 0, 256);
    if(GetDesktopComment(file, comment, &commentLength) != noErr)
        commentLength = 0;

    WORD_AT_OFFSET(header, kGetInfoCommentLengthOffset) = commentLength;
    WORD_AT_OFFSET(header, kCRCOffset) =
                                     crc32( 0, (unsigned char*) &header, 124);

    result = TempNewHandle(0, &err);
    if(result)
        {
        err = PtrAndHand(&header,result,128);

        if(dfRefNum && dataForkLength)
            {
            err = noErr;
            while(dataForkLength > 0 && err == noErr)
                {
                ioCount = 128;
                err = FSRead(dfRefNum,&ioCount,&buffer);

                if(err == noErr || err == eofErr)
                    err = PtrAndHand(&buffer,result,128);

                dataForkLength -= ioCount;
                }
            }

        if(rfRefNum && resourceForkLength)
            {
            err = noErr;
            while(resourceForkLength > 0 && err == noErr)
                {
                ioCount = 128;
                err = FSRead(rfRefNum,&ioCount,&buffer);

                if(err == noErr || err == eofErr)
                    err = PtrAndHand(&buffer,result,128);

                resourceForkLength -= ioCount;
                }
            }

        if(commentLength)
            {
            PtrAndHand(&comment,result,commentLength);
            }
        }

    if(rfRefNum)
        FSClose(rfRefNum);

    if(dfRefNum)
        FSClose(dfRefNum);

    return result;
}

#endif /* INCLUDE_ENCODE_MACBINARY */



#ifdef INCLUDE_DECODE_MACBINARY

static OSErr    SetDesktopComment(FSSpec *file, char*comment, long length)
{
    DTPBRec     pb;
    OSErr       err;

    pb.ioCompletion = nil;
    pb.ioNamePtr = NULL;
    pb.ioVRefNum = file->vRefNum;

    err = PBDTGetPath(&pb);

    if(err == noErr)
        {
        pb.ioNamePtr    = file->name;
        pb.ioDTBuffer   = comment;
        pb.ioDirID      = file->parID;
        pb.ioDTReqCount = length;
        err = PBDTSetComment(&pb, false);
        }
    return err;
}




OSErr   DecodeMacBinaryFile(FSSpec *source)
{
    Handle  data = nil;
    OSErr   err;
    short   dfRefNum = 0;
    long    size;
    FSSpec  McBin_source;

    memcpy(McBin_source.name,source->name,source->name[0]+1);
    McBin_source.vRefNum = source->vRefNum;
    McBin_source.parID   = source->parID;

    err = FSpOpenDF(source, fsRdPerm, &dfRefNum);
    if(!err)
        {
        err = GetEOF(dfRefNum, &size);

        data = TempNewHandle(size, &err);

        if(data)
            {
            HLock(data);
            err = FSRead(dfRefNum,&size,*data);
            HUnlock(data);
            }
        FSClose(dfRefNum);
        }

    if(data && err == noErr)
        {
        err =  DecodeMacBinary(data, source);
        DisposeHandle(data);
        }

#ifdef DELETE_MACBINARY_SOURCE
    if (err == noErr)
        err = FSpDelete(&McBin_source);
#endif

    return err;
}





static OSErr   DecodeMacBinary(Handle data, FSSpec *destination)
{
    Handle result = nil;
    FInfo   fndrInfo;
    OSErr   err;
    CInfoPBRec  pb;
    short   dfRefNum, rfRefNum;
    long    ioCount;
    char    header[128];
    char    comment[256];
    long    resourceForkLength, dataForkLength, commentLength;
    Boolean isMacBinaryFile = false;
    short   headerEnd = 128;
    long    rfOffset;
    long maxDataLen;

    memset(&pb, 0, sizeof(CInfoPBRec));
    pb.hFileInfo.ioNamePtr   = destination->name;
    pb.hFileInfo.ioVRefNum   = destination->vRefNum;
    pb.hFileInfo.ioFDirIndex = 0;           /*  query a file */
    pb.hFileInfo.ioDirID     = destination->parID;
    err = PBGetCatInfo(&pb,false);
    maxDataLen = pb.hFileInfo.ioFlLgLen;

    HLock(data);
    memcpy(header, *data, 128);

     /* already checked with FSpIsMacBinary()    */
    isMacBinaryFile = HeaderIsMacBinary(header, nil, maxDataLen);;

    if(!isMacBinaryFile)
        return paramErr;

    if(WORD_AT_OFFSET(header, kSecondaryHeaderLengthOffset))
        {
        headerEnd = WORD_AT_OFFSET(header, kSecondaryHeaderLengthOffset);
        headerEnd = (headerEnd + 127) & ~127L;
        }

    resourceForkLength = LONG_AT_OFFSET(header, kResourceForkLengthOffset);
    dataForkLength     = LONG_AT_OFFSET(header, kDataForkLengthOffset);
    commentLength      = WORD_AT_OFFSET(header, kGetInfoCommentLengthOffset);

    memcpy( destination->name,
            PTR_AT_OFFSET(header,
            kFileNameLengthOffset),
            BYTE_AT_OFFSET(header,
            kFileNameLengthOffset));

    fndrInfo.fdType    = LONG_AT_OFFSET(header, kFileTypeOffset);
    fndrInfo.fdCreator = LONG_AT_OFFSET(header, kFileCreatorOffset);

    fndrInfo.fdFlags = BYTE_AT_OFFSET(header, kFinderFlagsHiOffset);
    fndrInfo.fdFlags << 8;
    fndrInfo.fdFlags |= BYTE_AT_OFFSET(header, kFinderFlagsLowOffset);

    fndrInfo.fdLocation.v = WORD_AT_OFFSET(header, kFileVPositionOffset);
    fndrInfo.fdLocation.h = WORD_AT_OFFSET(header, kFileHPositionOffset);
    fndrInfo.fdFldr       = WORD_AT_OFFSET(header, kFileFolderIDOffset);
/*
    index = 1;
    checkFile = *destination;
    while(FSpExists(&checkFile))
        {
        checkFile = *destination;

        if(index < 10)
            checkFile.name[++checkFile.name[0]] = '0' + index;
        else
            checkFile.name[++checkFile.name[0]] = ('a' - 10) + index;
        index++;
        }
    *destination = checkFile;
*/
    err = FSpCreate(destination,
                    fndrInfo.fdCreator,
                    fndrInfo.fdType,
                    smSystemScript);

    dfRefNum = 0;
    if(err == noErr)
        {
        err = FSpOpenDF(destination, fsRdWrPerm, &dfRefNum);
        }

    if(err == noErr && dfRefNum)
        {
        ioCount = dataForkLength;
        err = FSWrite(dfRefNum,&ioCount,*data + headerEnd);
        FSClose(dfRefNum);
        }

    rfRefNum = 0;
    if(err == noErr)
        {
        err = FSpOpenRF(destination, fsRdWrPerm, &rfRefNum);
        }

    rfOffset = headerEnd + dataForkLength;
    rfOffset = (rfOffset + 127) & ~127L;

    if(err == noErr && rfRefNum)
        {
        ioCount = resourceForkLength;
        err = FSWrite(rfRefNum,&ioCount,*data + rfOffset);
        FSClose(rfRefNum);
        }

    rfOffset += resourceForkLength;
    rfOffset = (rfOffset + 127) & ~127L;

    if(err == noErr)
       {
        FSpSetFInfo(destination,&fndrInfo);

        memset(&pb, 0, sizeof(CInfoPBRec));
        pb.hFileInfo.ioNamePtr   = destination->name;
        pb.hFileInfo.ioVRefNum   = destination->vRefNum;
        pb.hFileInfo.ioFDirIndex = 0;           /*  query a file */
        pb.hFileInfo.ioDirID     = destination->parID;
        err = PBGetCatInfo(&pb,false);

        if(err == noErr)
            {
            pb.hFileInfo.ioDirID   = destination->parID;
            pb.hFileInfo.ioFlCrDat =
                          LONG_AT_OFFSET(header, kFileCreationDateOffset);
            pb.hFileInfo.ioFlMdDat =
                          LONG_AT_OFFSET(header, kFileModificationDateOffset);
            pb.hFileInfo.ioFlXFndrInfo.fdXFlags =
                          BYTE_AT_OFFSET(header, kExtendedFinderFlagsOffset);
            pb.hFileInfo.ioFlXFndrInfo.fdScript =
                          BYTE_AT_OFFSET(header, kFilenameScriptOffset);
            err = PBSetCatInfo(&pb, false);
            }

        if(commentLength)
            {
            memcpy(comment,*data + rfOffset, commentLength);
            SetDesktopComment(destination, comment, commentLength);
            }

        }
    HUnlock(data);
    return err;
}

#endif /*  INCLUDE_DECODE_MACBINARY  */