totalcross.util.zip

Class CompressedStream4D

java.lang.Object

totalcross.io.Stream

totalcross.util.zip.CompressedStream4D

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

GZipStream4D, ZipStream4D, ZLibStream4D

public abstract class CompressedStream4D
extends Stream

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.Object	compressedStream
static int	DEFLATE
protected static int	GZIP_COMPRESSION
static int	INFLATE
protected int	mode
protected byte[]	streamBuffer
protected static int	ZIP_COMPRESSION
protected static int	ZLIB_COMPRESSION

Fields inherited from class totalcross.io.Stream

skipBuffer

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CompressedStream4D(Stream stream, int mode, int compressionType)

Method Summary

Modifier and Type	Method and Description
void	close() Closes this I/O connection, releasing any associated resources.
protected java.lang.Object	createDeflate(Stream stream, int compressionType)
protected java.lang.Object	createInflate(Stream stream)
protected void	finalize()
int	readBytes(byte[] buf, int start, int count) Reads bytes from the stream.
int	writeBytes(byte[] buf, int start, int count) Writes bytes to the stream.

Methods inherited from class totalcross.io.Stream

asInputStream, asOutputStream, asStream, asStream, skipBytes, wrapInputStream, wrapInputStreamToStream, write, writeBytes, writeBytes, writeBytes

Methods inherited from class java.lang.Object

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

Field Detail

compressedStream

protected java.lang.Object compressedStream

mode

protected int mode

streamBuffer

protected byte[] streamBuffer

DEFLATE

public static final int DEFLATE

See Also:

Constant Field Values

INFLATE

public static final int INFLATE

See Also:

Constant Field Values

ZLIB_COMPRESSION

protected static final int ZLIB_COMPRESSION

See Also:

Constant Field Values

GZIP_COMPRESSION

protected static final int GZIP_COMPRESSION

See Also:

Constant Field Values

ZIP_COMPRESSION

protected static final int ZIP_COMPRESSION

See Also:

Constant Field Values

Constructor Detail

CompressedStream4D

protected CompressedStream4D(Stream stream,
                             int mode,
                             int compressionType)

Method Detail

createInflate

protected java.lang.Object createInflate(Stream stream)

createDeflate

protected java.lang.Object createDeflate(Stream stream,
                                         int compressionType)

readBytes

public int readBytes(byte[] buf,
                     int start,
                     int count)
              throws IOException,
                     ZipException

Description copied from class: Stream

Reads bytes from the stream. Returns the number of bytes actually read or -1 if the end of the stream was reached. (if applicable to the stream)

Specified by:

readBytes in class Stream

Parameters:

buf - the byte array to read data into

start - the start position in the array

count - the number of bytes to read

Throws:

IOException

ZipException

writeBytes

public int writeBytes(byte[] buf,
                      int start,
                      int count)
               throws IOException

Description copied from class: Stream

Writes bytes to the stream. Returns the number of bytes actually written or throws an IOException if an error prevented the write operation from occurring.

Specified by:

writeBytes in class Stream

Parameters:

buf - the byte array to write data from

start - the start position in the byte array

count - the number of bytes to write

Returns:

the number of bytes actually written

Throws:

IOException

close

public void close()
           throws IOException

Closes this I/O connection, releasing any associated resources. Once closed a connection is no longer valid.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

IOException - If an I/O error occurs.

finalize

protected void finalize()

Overrides:

finalize in class java.lang.Object