net.jsign.zip

Class CentralDirectory

java.lang.Object

net.jsign.zip.CentralDirectory

public class CentralDirectory
extends Object

Central directory of a ZIP file.

Since:

6.0

Field Summary

Fields

Modifier and Type	Field and Description
long	centralDirectoryOffset The location of the central directory
Map<String,CentralDirectoryFileHeader>	entries The entries of the central directory

Constructor Summary

Constructors

Constructor and Description
CentralDirectory()

Method Summary

Modifier and Type	Method and Description
long	getEntrySize(String name) Returns the size of the specified entry (local header + compressed data).
void	read(SeekableByteChannel channel)
void	removeEntry(String name) Removes the entry specified if it exists.
byte[]	toBytes() Returns the central directory as a byte array.
void	write(SeekableByteChannel channel) Write the central directory at the current position of the channel and update the offset.
void	write(SeekableByteChannel channel, long offset) Write the central directory at the current position of the channel but don't update the offset.

Methods inherited from class java.lang.Object

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

Field Detail

centralDirectoryOffset

public long centralDirectoryOffset

The location of the central directory

entries

public Map<String,CentralDirectoryFileHeader> entries

The entries of the central directory

Constructor Detail

CentralDirectory

public CentralDirectory()

Method Detail

getEntrySize

public long getEntrySize(String name)

Returns the size of the specified entry (local header + compressed data).

Parameters:

name - the name of the entry

Since:

7.0

read

public void read(SeekableByteChannel channel)
          throws IOException

Throws:

IOException

removeEntry

public void removeEntry(String name)

Removes the entry specified if it exists. Only the last entry can be removed.

Parameters:

name - the name of the entry to remove

toBytes

public byte[] toBytes()
               throws IOException

Returns the central directory as a byte array.

Throws:

IOException

write

public void write(SeekableByteChannel channel)
           throws IOException

Write the central directory at the current position of the channel and update the offset.

Parameters:

channel - the channel to write to

Throws:

IOException

write

public void write(SeekableByteChannel channel,
                  long offset)
           throws IOException

Write the central directory at the current position of the channel but don't update the offset.

Parameters:

channel - the channel to write to

offset - the offset of the central directory written in the End of Central Directory Record

Throws:

IOException