org.apache.commons.jrcs.diff

Class ChangeDelta

java.lang.Object

org.apache.commons.jrcs.util.ToString

org.apache.commons.jrcs.diff.Delta

org.apache.commons.jrcs.diff.ChangeDelta

public class ChangeDelta
extends Delta

Holds an change-delta between to revisions of a text.

Version:

$Id$

Author:

Juanco Anez

See Also:

Delta, Diff, Chunk

Field Summary

Fields inherited from class org.apache.commons.jrcs.diff.Delta

original, revised

Constructor Summary

Constructors

Constructor and Description
ChangeDelta(Chunk orig, Chunk rev)

Method Summary

Modifier and Type	Method and Description
void	accept(RevisionVisitor visitor) Accepts a visitor.
void	applyTo(List target) Applies this delta as a patch to the given text.
void	toRCSString(StringBuffer s, String EOL) Converts this delta into its RCS style string representation.
void	toString(StringBuffer s) Converts this delta into its Unix diff style string representation.
void	verify(List target) Verifies that this delta can be used to patch the given text.

Methods inherited from class org.apache.commons.jrcs.diff.Delta

getOriginal, getRevised, init, newDelta, patch, toRCSString

Methods inherited from class org.apache.commons.jrcs.util.ToString

arrayToString, arrayToString, stringToArray, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ChangeDelta

public ChangeDelta(Chunk orig,
                   Chunk rev)

Method Detail

verify

public void verify(List target)
            throws PatchFailedException

Description copied from class: Delta

Verifies that this delta can be used to patch the given text.

Specified by:

verify in class Delta

Parameters:

target - the text to patch.

Throws:

PatchFailedException - if the patch cannot be applied.

applyTo

public void applyTo(List target)

Description copied from class: Delta

Applies this delta as a patch to the given text.

Specified by:

applyTo in class Delta

Parameters:

target - the text to patch.

toString

public void toString(StringBuffer s)

Description copied from class: Delta

Converts this delta into its Unix diff style string representation.

Overrides:

toString in class Delta

Parameters:

s - a StringBuffer to which the string representation will be appended.

toRCSString

public void toRCSString(StringBuffer s,
                        String EOL)

Description copied from class: Delta

Converts this delta into its RCS style string representation.

Specified by:

toRCSString in class Delta

Parameters:

s - a StringBuffer to which the string representation will be appended.

EOL - the string to use as line separator.

accept

public void accept(RevisionVisitor visitor)

Description copied from class: Delta

Accepts a visitor.

See the Visitor pattern in "Design Patterns" by the GOF4.

Specified by:

accept in class Delta

Parameters:

visitor - The visitor.