org.sourcejammer.server.make
Class BuildDelta

java.lang.Object
  |
  +--org.sourcejammer.server.make.BuildDelta

public class BuildDelta

extends java.lang.Object

Nested Class Summary

private class	BuildDelta.MatchChunksResult Inner class for encapsulating the results of a comparision of a chunk of bytes from each byte array to it's opposite.
private class	BuildDelta.SearchRange

Field Summary

private boolean

mbDebug

Constructor Summary

BuildDelta()

Method Summary

BinaryDelta	buildBinaryDelta(byte[] byOld, byte[] byNew) Builds a delta file (BinaryDelta) representing the difference between the two byte arrays such that byNew can be reconstructed using just the BinaryDelta constructed here and byOld.
TextDiff	buildTextDelta(byte[] byOld, byte[] byNew)
TextDiff	buildTextDelta(byte[] byOld, TextLineReader readerNew)
TextDiff	buildTextDelta(TextLineReader readerOld, TextLineReader readerNew)
boolean	getDebug()
private BuildDelta.MatchChunksResult	matchCurrentChunks(ByteArrayChunkCompare oNewChunk, ByteArrayChunkCompare oOldChunk, BuildDelta.SearchRange oNewRange, BuildDelta.SearchRange oOldRange) Note that the purpose of oTemp01 and oTemp02 is to avoid unnecessary object instantiation.
private BuildDelta.MatchChunksResult	matchCurrentLines(java.lang.String sNewLine, java.lang.String sOldLine, TextLineReader oNewRef, TextLineReader oOldRef) Note that the purpose of oTemp01 and oTemp02 is to avoid unnecessary object instantiation.
void	setDebug(boolean b) If set to true, buildBinaryDelta() and buildTextDelta() output messages to default output.

Methods inherited from class java.lang.Object

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

Field Detail

mbDebug

private boolean mbDebug

Constructor Detail

BuildDelta

public BuildDelta()

Method Detail

setDebug

public void setDebug(boolean b)

If set to true, buildBinaryDelta() and buildTextDelta() output messages to default output.

getDebug

public boolean getDebug()

buildBinaryDelta

public BinaryDelta buildBinaryDelta(byte[] byOld,
                                    byte[] byNew)
                             throws InvalidSourceException,
                                    EndOfSourceException

Builds a delta file (BinaryDelta) representing the difference between the two byte arrays such that byNew can be reconstructed using just the BinaryDelta constructed here and byOld.

Parameters:

byOld - -- an array of all the bytes in the "old" file version.

byNew - -- an array of all the bytes in the new file version.

Returns:

a BinaryDelta object, that encapsulates the differences between the two versions.

Throws:

InvalidSourceException - -- if there is a problem with one of the two source byte arrays.

EndOfSourceException - -- if the end of one of the source files is hit unexpectedly. Actually, I don't think this should ever be thrown.

matchCurrentChunks

private BuildDelta.MatchChunksResult matchCurrentChunks(ByteArrayChunkCompare oNewChunk,
                                                        ByteArrayChunkCompare oOldChunk,
                                                        BuildDelta.SearchRange oNewRange,
                                                        BuildDelta.SearchRange oOldRange)
                                                 throws EndOfSourceException

Note that the purpose of oTemp01 and oTemp02 is to avoid unnecessary object instantiation. oTemp01 and oChunk01 should point to the same byte array and so should oTemp02 adn oChunk02. Basically, this method searches all oTemp01 for a match of current chunk in oChunk02 and vice versa.

EndOfSourceException

buildTextDelta

public TextDiff buildTextDelta(byte[] byOld,
                               byte[] byNew)
                        throws InvalidSourceException,
                               EndOfSourceException,
                               java.io.IOException

InvalidSourceException

EndOfSourceException

java.io.IOException

buildTextDelta

public TextDiff buildTextDelta(byte[] byOld,
                               TextLineReader readerNew)
                        throws InvalidSourceException,
                               EndOfSourceException,
                               java.io.IOException

InvalidSourceException

EndOfSourceException

java.io.IOException

buildTextDelta

public TextDiff buildTextDelta(TextLineReader readerOld,
                               TextLineReader readerNew)
                        throws InvalidSourceException,
                               EndOfSourceException,
                               java.io.IOException

InvalidSourceException

EndOfSourceException

java.io.IOException

matchCurrentLines

private BuildDelta.MatchChunksResult matchCurrentLines(java.lang.String sNewLine,
                                                       java.lang.String sOldLine,
                                                       TextLineReader oNewRef,
                                                       TextLineReader oOldRef)
                                                throws EndOfSourceException

Note that the purpose of oTemp01 and oTemp02 is to avoid unnecessary object instantiation. oTemp01 and oChunk01 should point to the same byte array and so should oTemp02 adn oChunk02. Basically, this method searches all oTemp01 for a match of current chunk in oChunk02 and vice versa.

EndOfSourceException