Class HeaderWriter

java.lang.Object

net.lingala.zip4j.headers.HeaderWriter

public class HeaderWriter
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final short	AES_EXTRA_DATA_RECORD_SIZE
private final byte[]	intBuff
private final byte[]	longBuff
private final RawIO	rawIO
private static final short	ZIP64_EXTRA_DATA_RECORD_SIZE_FH
private static final short	ZIP64_EXTRA_DATA_RECORD_SIZE_LFH

Constructor Summary

Constructors

Constructor	Description
HeaderWriter()

Method Summary

Modifier and Type	Method	Description
private Zip64EndOfCentralDirectoryRecord	buildZip64EndOfCentralDirectoryRecord(ZipModel zipModel, int sizeOfCentralDir, long offsetCentralDir)
private int	calculateExtraDataRecordsSize(FileHeader fileHeader, boolean writeZip64ExtendedInfo)
private long	countNumberOfFileHeaderEntriesOnDisk(List<FileHeader> fileHeaders, int numOfDisk)
void	finalizeZipFile(ZipModel zipModel, OutputStream outputStream, Charset charset)
void	finalizeZipFileWithoutValidations(ZipModel zipModel, OutputStream outputStream, Charset charset)
private int	getCurrentSplitFileCounter(OutputStream outputStream)
private long	getOffsetOfCentralDirectory(ZipModel zipModel)
private boolean	isSplitZipFile(OutputStream outputStream)
private boolean	isZip64Entry(FileHeader fileHeader)
private void	processHeaderData(ZipModel zipModel, OutputStream outputStream)
private void	updateFileSizesInLocalFileHeader(SplitOutputStream outputStream, FileHeader fileHeader)
void	updateLocalFileHeader(FileHeader fileHeader, ZipModel zipModel, SplitOutputStream outputStream)
private void	writeCentralDirectory(ZipModel zipModel, ByteArrayOutputStream byteArrayOutputStream, RawIO rawIO, Charset charset)
private void	writeEndOfCentralDirectoryRecord(ZipModel zipModel, int sizeOfCentralDir, long offsetCentralDir, ByteArrayOutputStream byteArrayOutputStream, RawIO rawIO, Charset charset)
void	writeExtendedLocalHeader(LocalFileHeader localFileHeader, OutputStream outputStream)
private void	writeFileHeader(ZipModel zipModel, FileHeader fileHeader, ByteArrayOutputStream byteArrayOutputStream, RawIO rawIO, Charset charset)
void	writeLocalFileHeader(ZipModel zipModel, LocalFileHeader localFileHeader, OutputStream outputStream, Charset charset)
private void	writeRemainingExtraDataRecordsIfPresent(FileHeader fileHeader, OutputStream outputStream)
private void	writeZip64EndOfCentralDirectoryLocator(Zip64EndOfCentralDirectoryLocator zip64EndOfCentralDirectoryLocator, ByteArrayOutputStream byteArrayOutputStream, RawIO rawIO)
private void	writeZip64EndOfCentralDirectoryRecord(Zip64EndOfCentralDirectoryRecord zip64EndOfCentralDirectoryRecord, ByteArrayOutputStream byteArrayOutputStream, RawIO rawIO)
private void	writeZipHeaderBytes(ZipModel zipModel, OutputStream outputStream, byte[] buff, Charset charset)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ZIP64_EXTRA_DATA_RECORD_SIZE_LFH

private static final short ZIP64_EXTRA_DATA_RECORD_SIZE_LFH

See Also:

• Constant Field Values

ZIP64_EXTRA_DATA_RECORD_SIZE_FH

private static final short ZIP64_EXTRA_DATA_RECORD_SIZE_FH

See Also:

• Constant Field Values

AES_EXTRA_DATA_RECORD_SIZE

private static final short AES_EXTRA_DATA_RECORD_SIZE

See Also:

• Constant Field Values

rawIO

private final RawIO rawIO

longBuff

private final byte[] longBuff

intBuff

private final byte[] intBuff

Constructor Details

HeaderWriter

public HeaderWriter()

Method Details

writeLocalFileHeader

public void writeLocalFileHeader(ZipModel zipModel,
 LocalFileHeader localFileHeader,
 OutputStream outputStream,
 Charset charset)
                          throws IOException

Throws:

IOException

writeExtendedLocalHeader

public void writeExtendedLocalHeader(LocalFileHeader localFileHeader,
 OutputStream outputStream)
                              throws IOException

Throws:

IOException

finalizeZipFile

public void finalizeZipFile(ZipModel zipModel,
 OutputStream outputStream,
 Charset charset)
                     throws IOException

Throws:

IOException

finalizeZipFileWithoutValidations

public void finalizeZipFileWithoutValidations(ZipModel zipModel,
 OutputStream outputStream,
 Charset charset)
                                       throws IOException

Throws:

IOException

updateLocalFileHeader

public void updateLocalFileHeader(FileHeader fileHeader,
 ZipModel zipModel,
 SplitOutputStream outputStream)
                           throws IOException

Throws:

IOException

updateFileSizesInLocalFileHeader

private void updateFileSizesInLocalFileHeader(SplitOutputStream outputStream,
 FileHeader fileHeader)
                                       throws IOException

Throws:

IOException

isSplitZipFile

private boolean isSplitZipFile(OutputStream outputStream)

getCurrentSplitFileCounter

private int getCurrentSplitFileCounter(OutputStream outputStream)

writeZipHeaderBytes

private void writeZipHeaderBytes(ZipModel zipModel,
 OutputStream outputStream,
 byte[] buff,
 Charset charset)
                          throws IOException

Throws:

IOException

processHeaderData

private void processHeaderData(ZipModel zipModel,
 OutputStream outputStream)
                        throws IOException

Throws:

IOException

writeCentralDirectory

private void writeCentralDirectory(ZipModel zipModel,
 ByteArrayOutputStream byteArrayOutputStream,
 RawIO rawIO,
 Charset charset)
                            throws ZipException

Throws:

ZipException

writeFileHeader

private void writeFileHeader(ZipModel zipModel,
 FileHeader fileHeader,
 ByteArrayOutputStream byteArrayOutputStream,
 RawIO rawIO,
 Charset charset)
                      throws ZipException

Throws:

ZipException

calculateExtraDataRecordsSize

private int calculateExtraDataRecordsSize(FileHeader fileHeader,
 boolean writeZip64ExtendedInfo)

writeRemainingExtraDataRecordsIfPresent

private void writeRemainingExtraDataRecordsIfPresent(FileHeader fileHeader,
 OutputStream outputStream)
                                              throws IOException

Throws:

IOException

writeZip64EndOfCentralDirectoryRecord

private void writeZip64EndOfCentralDirectoryRecord(Zip64EndOfCentralDirectoryRecord zip64EndOfCentralDirectoryRecord,
 ByteArrayOutputStream byteArrayOutputStream,
 RawIO rawIO)
                                            throws IOException

Throws:

IOException

writeZip64EndOfCentralDirectoryLocator

private void writeZip64EndOfCentralDirectoryLocator(Zip64EndOfCentralDirectoryLocator zip64EndOfCentralDirectoryLocator,
 ByteArrayOutputStream byteArrayOutputStream,
 RawIO rawIO)
                                             throws IOException

Throws:

IOException

writeEndOfCentralDirectoryRecord

private void writeEndOfCentralDirectoryRecord(ZipModel zipModel,
 int sizeOfCentralDir,
 long offsetCentralDir,
 ByteArrayOutputStream byteArrayOutputStream,
 RawIO rawIO,
 Charset charset)
                                       throws IOException

Throws:

IOException

countNumberOfFileHeaderEntriesOnDisk

private long countNumberOfFileHeaderEntriesOnDisk(List<FileHeader> fileHeaders,
 int numOfDisk)
                                           throws ZipException

Throws:

ZipException

isZip64Entry

private boolean isZip64Entry(FileHeader fileHeader)

getOffsetOfCentralDirectory

private long getOffsetOfCentralDirectory(ZipModel zipModel)

buildZip64EndOfCentralDirectoryRecord

private Zip64EndOfCentralDirectoryRecord buildZip64EndOfCentralDirectoryRecord(ZipModel zipModel,
 int sizeOfCentralDir,
 long offsetCentralDir)
                                                                        throws ZipException

Throws:

ZipException