proguard.io

Class JarWriter

java.lang.Object

proguard.io.JarWriter

All Implemented Interfaces:

DataEntryWriter

public class JarWriter
extends Object
implements DataEntryWriter

This DataEntryWriter sends data entries to a the jar/zip files specified by their parents.

Author:

Eric Lafortune

Constructor Summary

Constructors

Constructor and Description
JarWriter(byte[] header, DataEntryWriter dataEntryWriter) Creates a new JarWriter.
JarWriter(byte[] header, int modificationTime, DataEntryWriter dataEntryWriter) Creates a new JarWriter.
JarWriter(DataEntryWriter dataEntryWriter) Creates a new JarWriter.

Method Summary

Modifier and Type	Method and Description
void	close() Finishes writing all data entries.
boolean	createDirectory(DataEntry dataEntry) Creates a directory.
OutputStream	createOutputStream(DataEntry dataEntry) Creates a new output stream for writing data.
protected void	finish() Closes the zip output, if any.
void	println(PrintWriter pw, String prefix) Prints out the structure of the data entry writer.
boolean	sameOutputStream(DataEntry dataEntry1, DataEntry dataEntry2) Returns whether the two given data entries would result in the same output stream.
protected void	setUp(DataEntry dataEntry) Sets up the zip output for the given parent entry.

Methods inherited from class java.lang.Object

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

Constructor Detail

JarWriter

public JarWriter(DataEntryWriter dataEntryWriter)

Creates a new JarWriter.

Parameters:

dataEntryWriter - the data entry writer that can provide output streams for the jar/zip archives.

JarWriter

public JarWriter(byte[] header,
                 DataEntryWriter dataEntryWriter)

Creates a new JarWriter.

Parameters:

header - an optional header for the jar file.

dataEntryWriter - the data entry writer that can provide output streams for the jar/zip archives.

JarWriter

public JarWriter(byte[] header,
                 int modificationTime,
                 DataEntryWriter dataEntryWriter)

Creates a new JarWriter.

Parameters:

header - an optional header for the jar file.

modificationTime - the modification date and time of the zip entries, in DOS format.

dataEntryWriter - the data entry writer that can provide output streams for the jar/zip archives.

Method Detail

createDirectory

public boolean createDirectory(DataEntry dataEntry)
                        throws IOException

Description copied from interface: DataEntryWriter

Creates a directory.

Specified by:

createDirectory in interface DataEntryWriter

Parameters:

dataEntry - the data entry for which the directory is to be created.

Returns:

whether the directory has been created.

Throws:

IOException

sameOutputStream

public boolean sameOutputStream(DataEntry dataEntry1,
                                DataEntry dataEntry2)
                         throws IOException

Description copied from interface: DataEntryWriter

Returns whether the two given data entries would result in the same output stream.

Specified by:

sameOutputStream in interface DataEntryWriter

Parameters:

dataEntry1 - the first data entry.

dataEntry2 - the second data entry.

Throws:

IOException

createOutputStream

public OutputStream createOutputStream(DataEntry dataEntry)
                                throws IOException

Description copied from interface: DataEntryWriter

Creates a new output stream for writing data. The caller is responsible for closing the stream.

Specified by:

createOutputStream in interface DataEntryWriter

Parameters:

dataEntry - the data entry for which the output stream is to be created.

Returns:

the output stream. The stream may be null to indicate that the data entry should not be written.

Throws:

IOException

close

public void close()
           throws IOException

Description copied from interface: DataEntryWriter

Finishes writing all data entries.

Specified by:

close in interface DataEntryWriter

Throws:

IOException

println

public void println(PrintWriter pw,
                    String prefix)

Description copied from interface: DataEntryWriter

Prints out the structure of the data entry writer.

Specified by:

println in interface DataEntryWriter

Parameters:

pw - the print stream to which the structure should be printed.

prefix - a prefix for every printed line.

setUp

protected void setUp(DataEntry dataEntry)
              throws IOException

Sets up the zip output for the given parent entry.

Throws:

IOException

finish

protected void finish()
               throws IOException

Closes the zip output, if any.

Throws:

IOException