net.sf.statsvn.util
Class SvnDiffUtils

java.lang.Object
  net.sf.statsvn.util.SvnDiffUtils

All Implemented Interfaces:

ISvnDiffProcessor

Direct Known Subclasses:

SvnKitDiff

public class SvnDiffUtils

extends Object

implements ISvnDiffProcessor

Utilities class that manages calls to svn diff.

Version:

$Id: SvnDiffUtils.java 394 2009-08-10 20:08:46Z jkealey $

Author:

Jason Kealey , Gunter Mussbacher

Field Summary

protected static String	BINARY_TYPE
protected static String	INDEX_MARKER
protected ISvnProcessor	processor
protected static String	PROPERTY_CHANGE
protected static String	PROPERTY_NAME
protected static int	PROPERTY_NAME_LINE
static int	RESULT_SIZE

Constructor Summary

SvnDiffUtils(ISvnProcessor processor)
Invokes diffs using the svn diff command line.

Method Summary

protected void	appendResults(Vector answer, String currFile, StringBuffer sb) Append results to answer vector.
protected ProcessUtils	callSvnDiff(String newRevNr) Calls svn diff on all files for given revision and revision-1.
protected ProcessUtils	callSvnDiff(String oldRevNr, String newRevNr, String filename) Calls svn diff for the filename and revisions given.
Vector	getLineDiff(String newRevNr) Returns line count differences for all files in a particular revision.
int[]	getLineDiff(String oldRevNr, String newRevNr, String filename) Returns line count differences between two revisions of a file.
protected ISvnProcessor	getProcessor()
protected boolean	isBinaryErrorMessage(String msg) Returns true if msg is an error message display that the file is binary.
protected int[]	parseDiff(net.sf.statcvs.util.LookaheadReader diffReader) Returns line count differences between two revisions of a file.
protected void	parseMultipleDiffStream(Vector answer, InputStream diffStream)
protected int[]	parseSingleDiffStream(InputStream diffStream)
protected void	verifyOutput(ProcessUtils pUtils) Verifies the process error stream.

Methods inherited from class java.lang.Object

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

Field Detail

RESULT_SIZE

public static final int RESULT_SIZE

See Also:

Constant Field Values

PROPERTY_NAME_LINE

protected static final int PROPERTY_NAME_LINE

See Also:

Constant Field Values

PROPERTY_CHANGE

protected static final String PROPERTY_CHANGE

See Also:

Constant Field Values

PROPERTY_NAME

protected static final String PROPERTY_NAME

See Also:

Constant Field Values

BINARY_TYPE

protected static final String BINARY_TYPE

See Also:

Constant Field Values

INDEX_MARKER

protected static final String INDEX_MARKER

See Also:

Constant Field Values

processor

protected ISvnProcessor processor

Constructor Detail

SvnDiffUtils

public SvnDiffUtils(ISvnProcessor processor)

Invokes diffs using the svn diff command line.

Method Detail

getProcessor

protected ISvnProcessor getProcessor()

callSvnDiff

protected ProcessUtils callSvnDiff(String oldRevNr,
                                   String newRevNr,
                                   String filename)
                            throws IOException

Calls svn diff for the filename and revisions given. Will use URL invocation, to ensure that we get diffs even for deleted files.

Parameters:

oldRevNr - old revision number

newRevNr - new revision number

filename - filename.

Returns:

the InputStream related to the call. If the error steam is non-empty, will return the error stream instead of the default input stream.

Throws:

IOException

callSvnDiff

protected ProcessUtils callSvnDiff(String newRevNr)
                            throws IOException

Calls svn diff on all files for given revision and revision-1.

Parameters:

newRevNr - revision number

Returns:

the InputStream related to the call. If the error steam is non-empty, will return the error stream instead of the default input stream.

Throws:

IOException

getLineDiff

public int[] getLineDiff(String oldRevNr,
                         String newRevNr,
                         String filename)
                  throws IOException,
                         BinaryDiffException

Description copied from interface: ISvnDiffProcessor

Returns line count differences between two revisions of a file.

Specified by:

getLineDiff in interface ISvnDiffProcessor

Parameters:

oldRevNr - old revision number

newRevNr - new revision number

filename - the filename

Returns:

A int[2] array of [lines added, lines removed] is returned.

Throws:

BinaryDiffException - if the error message is due to trying to diff binary files.

IOException - problem parsing the stream

parseSingleDiffStream

protected int[] parseSingleDiffStream(InputStream diffStream)
                               throws IOException,
                                      BinaryDiffException

Throws:

IOException

BinaryDiffException

verifyOutput

protected void verifyOutput(ProcessUtils pUtils)
                     throws IOException,
                            BinaryDiffException

Verifies the process error stream.

Parameters:

pUtils - the process call

Throws:

IOException - problem parsing the stream

BinaryDiffException - if the error message is due to trying to diff binary files.

getLineDiff

public Vector getLineDiff(String newRevNr)
                   throws IOException,
                          BinaryDiffException

Description copied from interface: ISvnDiffProcessor

Returns line count differences for all files in a particular revision.

Specified by:

getLineDiff in interface ISvnDiffProcessor

Parameters:

newRevNr - new revision number

Returns:

A vector of object[3] array of [filename, int[2](lines added, lines removed), isBinary] is returned.

Throws:

IOException - problem parsing the stream

BinaryDiffException - if the error message is due to trying to diff binary files.

parseMultipleDiffStream

protected void parseMultipleDiffStream(Vector answer,
                                       InputStream diffStream)
                                throws IOException

Throws:

IOException

appendResults

protected void appendResults(Vector answer,
                             String currFile,
                             StringBuffer sb)
                      throws IOException

Append results to answer vector.

Parameters:

answer - the current answers

currFile - the current file being added.

sb - the diff for this individual file.

Throws:

IOException - problem parsing the stream

BinaryDiffException - if the error message is due to trying to diff binary files.

isBinaryErrorMessage

protected boolean isBinaryErrorMessage(String msg)

Returns true if msg is an error message display that the file is binary.

Parameters:

msg - the error message given by ProcessUtils.getErrorMessage();

Returns:

true if the file is binary

parseDiff

protected int[] parseDiff(net.sf.statcvs.util.LookaheadReader diffReader)
                   throws IOException,
                          BinaryDiffException

Returns line count differences between two revisions of a file.

Parameters:

diffReader - the stream reader for svn diff

Returns:

A int[2] array of [lines added, lines removed] is returned.

Throws:

IOException - problem parsing the stream

BinaryDiffException