com.nothome.delta
Class GDiffWriter

java.lang.Object
  com.nothome.delta.GDiffWriter

All Implemented Interfaces:

DiffWriter, Closeable

public class GDiffWriter
extends Object
implements DiffWriter

Outputs a diff following the GDIFF file specification available at http://www.w3.org/TR/NOTE-gdiff-19970901.html.

Field Summary

static int	CHUNK_SIZE Max length of a chunk.
static int	COPY_INT_INT
static int	COPY_INT_UBYTE
static int	COPY_INT_USHORT
static int	COPY_LONG_INT
static int	COPY_USHORT_INT
static int	COPY_USHORT_UBYTE
static int	COPY_USHORT_USHORT
static int	DATA_INT
static int	DATA_MAX Max length for single length data encode.
static int	DATA_USHORT
static byte	EOF

Constructor Summary

GDiffWriter(DataOutputStream os)
Constructs a new GDiffWriter.

GDiffWriter(OutputStream output)
Constructs a new GDiffWriter.

Method Summary

void	addCopy(long offset, int length) Add a GDIFF copy instruction.
void	addData(byte b) Adds a data byte.
void	close() Writes the final EOF byte, closes the underlying stream.
void	flush() Flushes accumulated data bytes, if any.

Methods inherited from class java.lang.Object

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

Field Detail

CHUNK_SIZE

public static final int CHUNK_SIZE

Max length of a chunk.

See Also:

Constant Field Values

EOF

public static final byte EOF

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Constant Field Values

DATA_MAX

public static final int DATA_MAX

Max length for single length data encode.

See Also:

Constant Field Values

DATA_USHORT

public static final int DATA_USHORT

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Constant Field Values

DATA_INT

public static final int DATA_INT

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Constant Field Values

COPY_USHORT_UBYTE

public static final int COPY_USHORT_UBYTE

See Also:

Constant Field Values

COPY_USHORT_USHORT

public static final int COPY_USHORT_USHORT

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Constant Field Values

COPY_USHORT_INT

public static final int COPY_USHORT_INT

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Constant Field Values

COPY_INT_UBYTE

public static final int COPY_INT_UBYTE

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Constant Field Values

COPY_INT_USHORT

public static final int COPY_INT_USHORT

See Also:

Constant Field Values

COPY_INT_INT

public static final int COPY_INT_INT

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Constant Field Values

COPY_LONG_INT

public static final int COPY_LONG_INT

See Also:

Constant Field Values

Constructor Detail

GDiffWriter

public GDiffWriter(DataOutputStream os)
            throws IOException

Constructs a new GDiffWriter.

Throws:

IOException

GDiffWriter

public GDiffWriter(OutputStream output)
            throws IOException

Constructs a new GDiffWriter.

Throws:

IOException

Method Detail

addCopy

public void addCopy(long offset,
                    int length)
             throws IOException

Description copied from interface: DiffWriter

Add a GDIFF copy instruction.

Specified by:

addCopy in interface DiffWriter

Throws:

IOException

addData

public void addData(byte b)
             throws IOException

Adds a data byte.

Specified by:

addData in interface DiffWriter

Throws:

IOException

flush

public void flush()
           throws IOException

Flushes accumulated data bytes, if any.

Specified by:

flush in interface DiffWriter

Throws:

IOException

close

public void close()
           throws IOException

Writes the final EOF byte, closes the underlying stream.

Specified by:

close in interface DiffWriter

Specified by:

close in interface Closeable

Throws:

IOException