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SwordShadow:
谢谢博主,写的不错
js判断上传文件的类型 -
icolorfulday:
今天我也正好碰到这样的错误,请问楼主解决了这个问题了么?
Struts2下载时出现错误 -
ocaicai:
pkfajax 写道感觉这些判断都不是很严谨,要是用户新建一个 ...
js判断上传文件的类型 -
yuer_Java:
rar 解压有问题//
java解压zip与rar -
goingshow:
zip中文解压出来,没有问题 但是我们显示出它的名称就 ...
java解压zip与rar
/* * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved. * Original author: Edmund Wagner * Creation date: 22.05.2007 * * Source: $HeadURL$ * Last changed: $LastChangedDate$ * * the unrar licence applies to all junrar source and binary distributions * you are not allowed to use this source to re-create the RAR compression * algorithm * * Here some html entities which can be used for escaping javadoc tags: * "&": "&" or "&" * "<": "<" or "<" * ">": ">" or ">" * "@": "@" */ package de.innosystec.unrar; import java.io.Closeable; import java.io.File; import java.io.IOException; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import de.innosystec.unrar.exception.RarException; import de.innosystec.unrar.exception.RarException.RarExceptionType; import de.innosystec.unrar.io.IReadOnlyAccess; import de.innosystec.unrar.io.ReadOnlyAccessFile; import de.innosystec.unrar.rarfile.AVHeader; import de.innosystec.unrar.rarfile.BaseBlock; import de.innosystec.unrar.rarfile.BlockHeader; import de.innosystec.unrar.rarfile.CommentHeader; import de.innosystec.unrar.rarfile.EAHeader; import de.innosystec.unrar.rarfile.EndArcHeader; import de.innosystec.unrar.rarfile.FileHeader; import de.innosystec.unrar.rarfile.MacInfoHeader; import de.innosystec.unrar.rarfile.MainHeader; import de.innosystec.unrar.rarfile.MarkHeader; import de.innosystec.unrar.rarfile.ProtectHeader; import de.innosystec.unrar.rarfile.SignHeader; import de.innosystec.unrar.rarfile.SubBlockHeader; import de.innosystec.unrar.rarfile.UnixOwnersHeader; import de.innosystec.unrar.rarfile.UnrarHeadertype; import de.innosystec.unrar.unpack.ComprDataIO; import de.innosystec.unrar.unpack.Unpack; /** * DOCUMENT ME * * @author $LastChangedBy$ * @version $LastChangedRevision$ */ public class Archive implements Closeable { private static Logger logger = Logger.getLogger(Archive.class.getName()); private File file; private IReadOnlyAccess rof; private final UnrarCallback unrarCallback; private final ComprDataIO dataIO; private final List<BaseBlock> headers = new ArrayList<BaseBlock>(); private MarkHeader markHead = null; private MainHeader newMhd = null; private EndArcHeader endHeader = null; private Unpack unpack; /** Archive data CRC. */ private long arcDataCRC = 0xffffffff; private int currentHeaderIndex; private boolean encrypted = false; private int sfxSize = 0; /** Size of packed data in current file. */ private long totalPackedSize = 0L; /** Number of bytes of compressed data read from current file. */ private long totalPackedRead = 0L; public Archive(File file) throws RarException, IOException { this(file, null); } /** * create a new archive object using the given file * @param file the file to extract * @throws RarException */ public Archive(File file, UnrarCallback unrarCallback) throws RarException, IOException { setFile(file); this.unrarCallback = unrarCallback; dataIO = new ComprDataIO(this); } public File getFile() { return file; } void setFile(File file) throws IOException { this.file = file; totalPackedSize = 0L; totalPackedRead = 0L; close(); rof = new ReadOnlyAccessFile(file); try { readHeaders(); } catch (Exception e) { logger.log(Level.WARNING, "exception in archive constructor maybe file is encrypted " + "or currupt", e); //ignore exceptions to allow exraction of working files in //corrupt archive } // Calculate size of packed data for (BaseBlock block : headers) { if (block.getHeaderType() == UnrarHeadertype.FileHeader) { totalPackedSize += ((FileHeader)block).getFullPackSize(); } } if (unrarCallback != null) { unrarCallback.volumeProgressChanged(totalPackedRead, totalPackedSize); } } public void bytesReadRead(int count) { if (count > 0) { totalPackedRead += count; if (unrarCallback != null) { unrarCallback.volumeProgressChanged(totalPackedRead, totalPackedSize); } } } public IReadOnlyAccess getRof() { return rof; } /** * @return returns all file headers of the archive */ public List<FileHeader> getFileHeaders(){ List<FileHeader> list = new ArrayList<FileHeader>(); for (BaseBlock block: headers) { if(block.getHeaderType().equals(UnrarHeadertype.FileHeader)){ list.add((FileHeader)block); } } return list; } public FileHeader nextFileHeader() { int n = headers.size(); while (currentHeaderIndex < n) { BaseBlock block = headers.get(currentHeaderIndex++); if (block.getHeaderType() == UnrarHeadertype.FileHeader) { return (FileHeader)block; } } return null; } public UnrarCallback getUnrarCallback() { return unrarCallback; } /** * * @return whether the archive is encrypted */ public boolean isEncrypted() { if(newMhd!=null){ return newMhd.isEncrypted(); }else{ throw new NullPointerException("mainheader is null"); } } /** * Read the headers of the archive * @throws RarException */ private void readHeaders() throws IOException, RarException{ markHead = null; newMhd = null; endHeader = null; headers.clear(); currentHeaderIndex = 0; int toRead = 0; long fileLength = this.file.length(); while(true){ int size = 0; long newpos = 0; byte[] baseBlockBuffer =new byte[BaseBlock.BaseBlockSize]; long position = rof.getPosition(); // Weird, but is trying to read beyond the end of the file if (position >= fileLength) { break; } // logger.info("\n--------reading header--------"); size = rof.readFully(baseBlockBuffer, BaseBlock.BaseBlockSize); if (size == 0){ break; } BaseBlock block = new BaseBlock(baseBlockBuffer); block.setPositionInFile(position); switch(block.getHeaderType()) { case MarkHeader: markHead = new MarkHeader(block); if (!markHead.isSignature()) { throw new RarException( RarException.RarExceptionType.badRarArchive); } headers.add(markHead); // markHead.print(); break; case MainHeader: int mainHeaderSize = 0; toRead = block.hasEncryptVersion() ? MainHeader.mainHeaderSizeWithEnc : MainHeader.mainHeaderSize; byte[] mainbuff = new byte[toRead]; mainHeaderSize = rof.readFully(mainbuff, toRead); MainHeader mainhead =new MainHeader(block,mainbuff); headers.add(mainhead); this.newMhd = mainhead; if(newMhd.isEncrypted()){ throw new RarException( RarExceptionType.rarEncryptedException); } // mainhead.print(); break; case SignHeader: int signHeaderSize = 0; toRead = SignHeader.signHeaderSize; byte[] signBuff = new byte[toRead]; signHeaderSize = rof.readFully(signBuff, toRead); SignHeader signHead = new SignHeader(block,signBuff); headers.add(signHead); // logger.info("HeaderType: SignHeader"); break; case AvHeader: int avHeaderSize = 0; toRead = AVHeader.avHeaderSize; byte[] avBuff = new byte[toRead]; avHeaderSize = rof.readFully(avBuff, toRead); AVHeader avHead = new AVHeader(block,avBuff); headers.add(avHead); // logger.info("headertype: AVHeader"); break; case CommHeader: int commHeaderSize = 0; toRead = CommentHeader.commentHeaderSize; byte[] commBuff = new byte[toRead]; commHeaderSize = rof.readFully(commBuff, toRead); CommentHeader commHead = new CommentHeader(block,commBuff); headers.add(commHead); // logger.info("method: "+commHead.getUnpMethod()+"; 0x"+ // Integer.toHexString(commHead.getUnpMethod())); newpos = commHead.getPositionInFile() + commHead.getHeaderSize(); rof.setPosition(newpos); break; case EndArcHeader: toRead = 0; if (block.hasArchiveDataCRC()) { toRead += EndArcHeader.endArcArchiveDataCrcSize; } if (block.hasVolumeNumber()) { toRead += EndArcHeader.endArcVolumeNumberSize; } EndArcHeader endArcHead; if(toRead > 0){ int endArcHeaderSize = 0; byte[] endArchBuff = new byte[toRead]; endArcHeaderSize = rof.readFully(endArchBuff, toRead); endArcHead = new EndArcHeader(block,endArchBuff); // logger.info("HeaderType: endarch\ndatacrc:"+ // endArcHead.getArchiveDataCRC()); }else{ // logger.info("HeaderType: endarch - no Data"); endArcHead = new EndArcHeader(block,null); } headers.add(endArcHead); this.endHeader = endArcHead; // logger.info("\n--------end header--------"); return; default: byte[] blockHeaderBuffer = new byte[BlockHeader.blockHeaderSize]; int bhsize = rof.readFully(blockHeaderBuffer, BlockHeader.blockHeaderSize); BlockHeader blockHead = new BlockHeader(block, blockHeaderBuffer); switch(blockHead.getHeaderType()) { case NewSubHeader: case FileHeader: toRead = blockHead.getHeaderSize()- BlockHeader.BaseBlockSize- BlockHeader.blockHeaderSize; byte[] fileHeaderBuffer = new byte[toRead]; int fhsize = rof.readFully(fileHeaderBuffer, toRead); FileHeader fh = new FileHeader(blockHead, fileHeaderBuffer); // if (DEBUG) { // fh.print(); // } headers.add(fh); newpos = fh.getPositionInFile() + fh.getHeaderSize() + fh.getFullPackSize(); rof.setPosition(newpos); break; case ProtectHeader: toRead = blockHead.getHeaderSize()- BlockHeader.BaseBlockSize- BlockHeader.blockHeaderSize; byte[] protectHeaderBuffer = new byte[toRead]; int phsize = rof.readFully(protectHeaderBuffer, toRead); ProtectHeader ph = new ProtectHeader(blockHead, protectHeaderBuffer); // logger.info("totalblocks"+ph.getTotalBlocks()); newpos = ph.getPositionInFile() + ph.getHeaderSize(); rof.setPosition(newpos); break; case SubHeader: { byte[] subHeadbuffer = new byte[SubBlockHeader.SubBlockHeaderSize]; int subheadersize = rof.readFully(subHeadbuffer, SubBlockHeader.SubBlockHeaderSize); SubBlockHeader subHead = new SubBlockHeader(blockHead,subHeadbuffer); subHead.print(); switch (subHead.getSubType()) { case MAC_HEAD: { byte[] macHeaderbuffer = new byte[MacInfoHeader.MacInfoHeaderSize]; int macheadersize = rof.readFully(macHeaderbuffer, MacInfoHeader.MacInfoHeaderSize); MacInfoHeader macHeader = new MacInfoHeader(subHead,macHeaderbuffer); macHeader.print(); headers.add(macHeader); break; } //TODO implement other subheaders case BEEA_HEAD: break; case EA_HEAD: { byte[] eaHeaderBuffer = new byte[EAHeader.EAHeaderSize]; int eaheadersize = rof.readFully(eaHeaderBuffer, EAHeader.EAHeaderSize); EAHeader eaHeader = new EAHeader(subHead,eaHeaderBuffer); eaHeader.print(); headers.add(eaHeader); break; } case NTACL_HEAD: break; case STREAM_HEAD: break; case UO_HEAD: toRead = subHead.getHeaderSize(); toRead -= BaseBlock.BaseBlockSize; toRead -= BlockHeader.blockHeaderSize; toRead -= SubBlockHeader.SubBlockHeaderSize; byte[] uoHeaderBuffer = new byte[toRead]; int uoHeaderSize = rof.readFully(uoHeaderBuffer, toRead); UnixOwnersHeader uoHeader = new UnixOwnersHeader(subHead,uoHeaderBuffer); uoHeader.print(); headers.add(uoHeader); break; default: break; } break; } default: logger.warning("Unknown Header"); throw new RarException( RarExceptionType.notRarArchive); } } // logger.info("\n--------end header--------"); } } /** * Extract the file specified by the given header and write it * to the supplied output stream * * @param header the header to be extracted * @param os the outputstream * @throws RarException */ public void extractFile(FileHeader hd, OutputStream os) throws RarException{ if (!headers.contains(hd)){ throw new RarException(RarExceptionType.headerNotInArchive); } try { doExtractFile(hd, os); } catch (Exception e) { if (e instanceof RarException){ throw (RarException)e; } else{ throw new RarException(e); } } } private void doExtractFile(FileHeader hd, OutputStream os) throws RarException, IOException { dataIO.init(os); dataIO.init(hd); dataIO.setUnpFileCRC(this.isOldFormat()?0:0xffFFffFF); if(unpack==null){ unpack = new Unpack(dataIO); } if(!hd.isSolid()){ unpack.init(null); } unpack.setDestSize(hd.getFullUnpackSize()); try { unpack.doUnpack(hd.getUnpVersion(), hd.isSolid()); // Verify file CRC hd = dataIO.getSubHeader(); long actualCRC = hd.isSplitAfter() ? ~dataIO.getPackedCRC() : ~dataIO.getUnpFileCRC(); int expectedCRC = hd.getFileCRC(); if(actualCRC != expectedCRC){ throw new RarException(RarExceptionType.crcError); } // if (!hd.isSplitAfter()) { // // Verify file CRC // if(~dataIO.getUnpFileCRC() != hd.getFileCRC()){ // throw new RarException(RarExceptionType.crcError); // } // } } catch (Exception e) { unpack.cleanUp(); if (e instanceof RarException){ //throw new RarException((RarException)e); throw (RarException)e; } else{ throw new RarException(e); } } } /** * @return returns the main header of this archive */ public MainHeader getMainHeader() { return newMhd; } /** * @return whether the archive is old format */ public boolean isOldFormat() { return markHead.isOldFormat(); } /** Close the underlying compressed file. */ public void close() throws IOException { if (rof != null) { rof.close(); rof = null; } } }
URL:http://svn.atlassian.com/svn/public/atlassian/vendor/java-unrar/trunk/src/main/java/de/innosystec/unrar/Archive.java
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