/**
* Writes bytes to ZIP entry.
* @param b the byte array to write
* @param offset the start position to write from
* @param length the number of bytes to write
* @throws IOException on error
*/
public override void write(byte[] b, int offset, int length) //throws IOException
{
ZipUtil.checkRequestedFeatures(entry);
if (entry.getMethod() == DEFLATED)
{
if (length > 0)
{
if (!def.finished())
{
if (length <= DEFLATER_BLOCK_SIZE)
{
def.setInput(b, offset, length);
deflateUntilInputIsNeeded();
}
else
{
int fullblocks = length / DEFLATER_BLOCK_SIZE;
for (int i = 0; i < fullblocks; i++)
{
def.setInput(b, offset + i * DEFLATER_BLOCK_SIZE,
DEFLATER_BLOCK_SIZE);
deflateUntilInputIsNeeded();
}
int done = fullblocks * DEFLATER_BLOCK_SIZE;
if (done < length)
{
def.setInput(b, offset + done, length - done);
deflateUntilInputIsNeeded();
}
}
}
}
}
else
{
writeOut(b, offset, length);
written += length;
}
crc.update(b, offset, length);
count(length);
}
/**
* Set the extra field data in central directory.
* @param data the data to use
*/
public virtual void setCentralDirectoryData(byte[] data)
{
centralData = ZipUtil.copy(data);
}
/**
* Get the local data.
* @return the local data
*/
public virtual byte[] getLocalFileDataData()
{
return(ZipUtil.copy(localData));
}
/**
* Set the extra field data in the local file data -
* without Header-ID or length specifier.
* @param data the field data to use
*/
public virtual void setLocalFileDataData(byte[] data)
{
localData = ZipUtil.copy(data);
}
/**
* Reads the central directory of the given archive and populates
* the internal tables with ZipArchiveEntry instances.
*
* <p>The ZipArchiveEntrys will know all data that can be obtained from
* the central directory alone, but not the data that requires the
* local file header or additional data to be read.</p>
*
* @return a Map<ZipArchiveEntry, NameAndComment>> of
* zipentries that didn't have the language encoding flag set when
* read.
*/
private java.util.Map <ZipArchiveEntry, IAC_NameAndComment> populateFromCentralDirectory()
//throws IOException
{
java.util.HashMap <ZipArchiveEntry, IAC_NameAndComment> noUTF8Flag = new java.util.HashMap <ZipArchiveEntry, IAC_NameAndComment>();
positionAtCentralDirectory();
byte[] cfh = new byte[CFH_LEN];
byte[] signatureBytes = new byte[WORD];
archive.readFully(signatureBytes);
long sig = ZipLong.getValue(signatureBytes);
long cfhSig = ZipLong.getValue(ZipArchiveOutputStream.CFH_SIG);
if (sig != cfhSig && startsWithLocalFileHeader())
{
throw new java.io.IOException("central directory is empty, can't expand"
+ " corrupt archive.");
}
while (sig == cfhSig)
{
archive.readFully(cfh);
int off = 0;
ZipArchiveEntry ze = new ZipArchiveEntry();
int versionMadeBy = ZipShort.getValue(cfh, off);
off += SHORT;
ze.setPlatform((versionMadeBy >> BYTE_SHIFT) & NIBLET_MASK);
off += SHORT; // skip version info
GeneralPurposeBit gpFlag = GeneralPurposeBit.parse(cfh, off);
bool hasUTF8Flag = gpFlag.usesUTF8ForNames();
ZipEncoding entryEncoding =
hasUTF8Flag ? ZipEncodingHelper.UTF8_ZIP_ENCODING : zipEncoding;
ze.setGeneralPurposeBit(gpFlag);
off += SHORT;
ze.setMethod(ZipShort.getValue(cfh, off));
off += SHORT;
// FIXME this is actually not very cpu cycles friendly as we are converting from
// dos to java while the underlying Sun implementation will convert
// from java to dos time for internal storage...
long time = ZipUtil.dosToJavaTime(ZipLong.getValue(cfh, off));
ze.setTime(time);
off += WORD;
ze.setCrc(ZipLong.getValue(cfh, off));
off += WORD;
ze.setCompressedSize(ZipLong.getValue(cfh, off));
off += WORD;
ze.setSize(ZipLong.getValue(cfh, off));
off += WORD;
int fileNameLen = ZipShort.getValue(cfh, off);
off += SHORT;
int extraLen = ZipShort.getValue(cfh, off);
off += SHORT;
int commentLen = ZipShort.getValue(cfh, off);
off += SHORT;
off += SHORT; // disk number
ze.setInternalAttributes(ZipShort.getValue(cfh, off));
off += SHORT;
ze.setExternalAttributes(ZipLong.getValue(cfh, off));
off += WORD;
byte[] fileName = new byte[fileNameLen];
archive.readFully(fileName);
ze.setName(entryEncoding.decode(fileName));
// LFH offset,
IAC_OffsetEntry offset = new IAC_OffsetEntry();
offset.headerOffset = ZipLong.getValue(cfh, off);
// data offset will be filled later
entries.put(ze, offset);
nameMap.put(ze.getName(), ze);
byte[] cdExtraData = new byte[extraLen];
archive.readFully(cdExtraData);
ze.setCentralDirectoryExtra(cdExtraData);
byte[] comment = new byte[commentLen];
archive.readFully(comment);
ze.setComment(entryEncoding.decode(comment));
archive.readFully(signatureBytes);
sig = ZipLong.getValue(signatureBytes);
if (!hasUTF8Flag && useUnicodeExtraFields)
{
noUTF8Flag.put(ze, new IAC_NameAndComment(fileName, comment));
}
}
return(noUTF8Flag);
}
/**
* Whether this class is able to read the given entry.
*
* <p>May return false if it is set up to use encryption or a
* compression method that hasn't been implemented yet.</p>
* @since Apache Commons Compress 1.1
*/
public bool canReadEntryData(ZipArchiveEntry ze)
{
return(ZipUtil.canHandleEntryData(ze));
}
/**
* Writes the central file header entry.
* @param ze the entry to write
* @throws IOException on error
*/
protected void writeCentralFileHeader(ZipArchiveEntry ze) //throws IOException
{
writeOut(CFH_SIG);
written += WORD;
// version made by
// CheckStyle:MagicNumber OFF
writeOut(ZipShort.getBytes((ze.getPlatform() << 8) | 20));
written += SHORT;
int zipMethod = ze.getMethod();
bool encodable = zipEncoding.canEncode(ze.getName());
writeVersionNeededToExtractAndGeneralPurposeBits(zipMethod,
!encodable &&
fallbackToUTF8);
written += WORD;
// compression method
writeOut(ZipShort.getBytes(zipMethod));
written += SHORT;
// last mod. time and date
writeOut(ZipUtil.toDosTime(ze.getTime()));
written += WORD;
// CRC
// compressed length
// uncompressed length
writeOut(ZipLong.getBytes(ze.getCrc()));
writeOut(ZipLong.getBytes(ze.getCompressedSize()));
writeOut(ZipLong.getBytes(ze.getSize()));
// CheckStyle:MagicNumber OFF
written += 12;
// CheckStyle:MagicNumber ON
// file name length
ZipEncoding entryEncoding;
if (!encodable && fallbackToUTF8)
{
entryEncoding = ZipEncodingHelper.UTF8_ZIP_ENCODING;
}
else
{
entryEncoding = zipEncoding;
}
java.nio.ByteBuffer name = entryEncoding.encode(ze.getName());
writeOut(ZipShort.getBytes(name.limit()));
written += SHORT;
// extra field length
byte[] extra = ze.getCentralDirectoryExtra();
writeOut(ZipShort.getBytes(extra.Length));
written += SHORT;
// file comment length
String comm = ze.getComment();
if (comm == null)
{
comm = "";
}
java.nio.ByteBuffer commentB = entryEncoding.encode(comm);
writeOut(ZipShort.getBytes(commentB.limit()));
written += SHORT;
// disk number start
writeOut(ZERO);
written += SHORT;
// internal file attributes
writeOut(ZipShort.getBytes(ze.getInternalAttributes()));
written += SHORT;
// external file attributes
writeOut(ZipLong.getBytes(ze.getExternalAttributes()));
written += WORD;
// relative offset of LFH
writeOut((byte[])offsets.get(ze));
written += WORD;
// file name
writeOut((byte[])name.array(), name.arrayOffset(), name.limit());
written += name.limit();
// extra field
writeOut(extra);
written += extra.Length;
// file comment
writeOut((byte[])commentB.array(), commentB.arrayOffset(), commentB.limit());
written += commentB.limit();
}
/**
* Writes the local file header entry
* @param ze the entry to write
* @throws IOException on error
*/
protected void writeLocalFileHeader(ZipArchiveEntry ze) //throws IOException
{
bool encodable = zipEncoding.canEncode(ze.getName());
ZipEncoding entryEncoding;
if (!encodable && fallbackToUTF8)
{
entryEncoding = ZipEncodingHelper.UTF8_ZIP_ENCODING;
}
else
{
entryEncoding = zipEncoding;
}
java.nio.ByteBuffer name = entryEncoding.encode(ze.getName());
if (createUnicodeExtraFields != UnicodeExtraFieldPolicy.NEVER)
{
if (createUnicodeExtraFields == UnicodeExtraFieldPolicy.ALWAYS ||
!encodable)
{
ze.addExtraField(new UnicodePathExtraField(ze.getName(),
(byte[])name.array(),
name.arrayOffset(),
name.limit()));
}
String comm = ze.getComment();
if (comm != null && !"".equals(comm))
{
bool commentEncodable = this.zipEncoding.canEncode(comm);
if (createUnicodeExtraFields == UnicodeExtraFieldPolicy.ALWAYS ||
!commentEncodable)
{
java.nio.ByteBuffer commentB = entryEncoding.encode(comm);
ze.addExtraField(new UnicodeCommentExtraField(comm,
(byte[])commentB.array(),
commentB.arrayOffset(),
commentB.limit())
);
}
}
}
offsets.put(ze, ZipLong.getBytes(written));
writeOut(LFH_SIG);
written += WORD;
//store method in local variable to prevent multiple method calls
int zipMethod = ze.getMethod();
writeVersionNeededToExtractAndGeneralPurposeBits(zipMethod,
!encodable &&
fallbackToUTF8);
written += WORD;
// compression method
writeOut(ZipShort.getBytes(zipMethod));
written += SHORT;
// last mod. time and date
writeOut(ZipUtil.toDosTime(ze.getTime()));
written += WORD;
// CRC
// compressed length
// uncompressed length
localDataStart = written;
if (zipMethod == DEFLATED || raf != null)
{
writeOut(LZERO);
writeOut(LZERO);
writeOut(LZERO);
}
else
{
writeOut(ZipLong.getBytes(ze.getCrc()));
writeOut(ZipLong.getBytes(ze.getSize()));
writeOut(ZipLong.getBytes(ze.getSize()));
}
// CheckStyle:MagicNumber OFF
written += 12;
// CheckStyle:MagicNumber ON
// file name length
writeOut(ZipShort.getBytes(name.limit()));
written += SHORT;
// extra field length
byte[] extra = ze.getLocalFileDataExtra();
writeOut(ZipShort.getBytes(extra.Length));
written += SHORT;
// file name
writeOut((byte[])name.array(), name.arrayOffset(), name.limit());
written += name.limit();
// extra field
writeOut(extra);
written += extra.Length;
dataStart = written;
}
/**
* Writes all necessary data for this entry.
* @throws IOException on error
*/
public override void closeArchiveEntry() //throws IOException
{
if (finished)
{
throw new java.io.IOException("Stream has already been finished");
}
if (entry == null)
{
throw new java.io.IOException("No current entry to close");
}
long realCrc = crc.getValue();
crc.reset();
if (entry.getMethod() == DEFLATED)
{
def.finish();
while (!def.finished())
{
deflate();
}
entry.setSize(ZipUtil.adjustToLong(def.getTotalIn()));
entry.setCompressedSize(ZipUtil.adjustToLong(def.getTotalOut()));
entry.setCrc(realCrc);
def.reset();
written += entry.getCompressedSize();
}
else if (raf == null)
{
if (entry.getCrc() != realCrc)
{
throw new java.util.zip.ZipException("bad CRC checksum for entry "
+ entry.getName() + ": "
+ java.lang.Long.toHexString(entry.getCrc())
+ " instead of "
+ java.lang.Long.toHexString(realCrc));
}
if (entry.getSize() != written - dataStart)
{
throw new java.util.zip.ZipException("bad size for entry "
+ entry.getName() + ": "
+ entry.getSize()
+ " instead of "
+ (written - dataStart));
}
}
else /* method is STORED and we used RandomAccessFile */
{
long size = written - dataStart;
entry.setSize(size);
entry.setCompressedSize(size);
entry.setCrc(realCrc);
}
// If random access output, write the local file header containing
// the correct CRC and compressed/uncompressed sizes
if (raf != null)
{
long save = raf.getFilePointer();
raf.seek(localDataStart);
writeOut(ZipLong.getBytes(entry.getCrc()));
writeOut(ZipLong.getBytes(entry.getCompressedSize()));
writeOut(ZipLong.getBytes(entry.getSize()));
raf.seek(save);
}
writeDataDescriptor(entry);
entry = null;
}
public override int read(byte[] buffer, int start, int length) //throws IOException
{
if (closed)
{
throw new java.io.IOException("The stream is closed");
}
if (inf.finished() || current == null)
{
return(-1);
}
// avoid int overflow, check null buffer
if (start <= buffer.Length && length >= 0 && start >= 0 &&
buffer.Length - start >= length)
{
ZipUtil.checkRequestedFeatures(current);
if (!supportsDataDescriptorFor(current))
{
throw new UnsupportedZipFeatureException(Feature.DATA_DESCRIPTOR, current);
}
if (current.getMethod() == ZipArchiveOutputStream.STORED)
{
if (hasDataDescriptor)
{
if (lastStoredEntry == null)
{
readStoredEntry();
}
return(lastStoredEntry.read(buffer, start, length));
}
int csize = (int)current.getSize();
if (readBytesOfEntry >= csize)
{
return(-1);
}
if (offsetInBuffer >= lengthOfLastRead)
{
offsetInBuffer = 0;
if ((lengthOfLastRead = inJ.read(buf)) == -1)
{
return(-1);
}
count(lengthOfLastRead);
bytesReadFromStream += lengthOfLastRead;
}
int toRead = length > lengthOfLastRead
? lengthOfLastRead - offsetInBuffer
: length;
if ((csize - readBytesOfEntry) < toRead)
{
toRead = csize - readBytesOfEntry;
}
java.lang.SystemJ.arraycopy(buf, offsetInBuffer, buffer, start, toRead);
offsetInBuffer += toRead;
readBytesOfEntry += toRead;
crc.update(buffer, start, toRead);
return(toRead);
}
if (inf.needsInput())
{
fill();
if (lengthOfLastRead > 0)
{
bytesReadFromStream += lengthOfLastRead;
}
}
int read = 0;
try {
read = inf.inflate(buffer, start, length);
} catch (java.util.zip.DataFormatException e) {
throw new java.util.zip.ZipException(e.getMessage());
}
if (read == 0)
{
if (inf.finished())
{
return(-1);
}
else if (lengthOfLastRead == -1)
{
throw new java.io.IOException("Truncated ZIP file");
}
}
crc.update(buffer, start, read);
return(read);
}
throw new java.lang.ArrayIndexOutOfBoundsException();
}
public ZipArchiveEntry getNextZipEntry() //throws IOException
{
if (closed || hitCentralDirectory)
{
return(null);
}
if (current != null)
{
closeEntry();
}
byte[] lfh = new byte[LFH_LEN];
try {
readFully(lfh);
} catch (java.io.EOFException) {
return(null);
}
ZipLong sig = new ZipLong(lfh);
if (sig.equals(ZipLong.CFH_SIG))
{
hitCentralDirectory = true;
return(null);
}
if (!sig.equals(ZipLong.LFH_SIG))
{
return(null);
}
int off = WORD;
current = new ZipArchiveEntry();
int versionMadeBy = ZipShort.getValue(lfh, off);
off += SHORT;
current.setPlatform((versionMadeBy >> ZipFile.BYTE_SHIFT)
& ZipFile.NIBLET_MASK);
GeneralPurposeBit gpFlag = GeneralPurposeBit.parse(lfh, off);
bool hasUTF8Flag = gpFlag.usesUTF8ForNames();
ZipEncoding entryEncoding =
hasUTF8Flag ? ZipEncodingHelper.UTF8_ZIP_ENCODING : zipEncoding;
hasDataDescriptor = gpFlag.usesDataDescriptor();
current.setGeneralPurposeBit(gpFlag);
off += SHORT;
current.setMethod(ZipShort.getValue(lfh, off));
off += SHORT;
long time = ZipUtil.dosToJavaTime(ZipLong.getValue(lfh, off));
current.setTime(time);
off += WORD;
if (!hasDataDescriptor)
{
current.setCrc(ZipLong.getValue(lfh, off));
off += WORD;
current.setCompressedSize(ZipLong.getValue(lfh, off));
off += WORD;
current.setSize(ZipLong.getValue(lfh, off));
off += WORD;
}
else
{
off += 3 * WORD;
}
int fileNameLen = ZipShort.getValue(lfh, off);
off += SHORT;
int extraLen = ZipShort.getValue(lfh, off);
off += SHORT;
byte[] fileName = new byte[fileNameLen];
readFully(fileName);
current.setName(entryEncoding.decode(fileName));
byte[] extraData = new byte[extraLen];
readFully(extraData);
current.setExtra(extraData);
if (!hasUTF8Flag && useUnicodeExtraFields)
{
ZipUtil.setNameAndCommentFromExtraFields(current, fileName, null);
}
return(current);
}
/**
* The actual data to put into central directory.
*
* @return The CentralDirectoryData value
*/
public byte[] getCentralDirectoryData()
{
return(centralDirectoryData == null
? getLocalFileDataData() : ZipUtil.copy(centralDirectoryData));
}
