com.redhat.rhn.common.filediff
Class RhnPatchDiffWriter

java.lang.Object
  com.redhat.rhn.common.filediff.RhnPatchDiffWriter

All Implemented Interfaces:

DiffVisitor, DiffWriter

public class RhnPatchDiffWriter
extends java.lang.Object
implements DiffVisitor, DiffWriter

Converts a list of hunks from a file diff to a unified output format for use with the Unix patch tool.

Constructor Summary

RhnPatchDiffWriter(java.lang.String fromPath, java.lang.String toPath, java.util.Date fromDate, java.util.Date toDate)

Method Summary

void	accept(ChangeHunk hunk) Standard visitor
void	accept(DeleteHunk hunk) Standard visitor
void	accept(InsertHunk hunk) Standard visitor
void	accept(MatchHunk hunk) Standard visitor
java.lang.String	getResult()
void	writeHunk(Hunk hunkIn) Write the diff, one hunk at a time.

Methods inherited from class java.lang.Object

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

Constructor Detail

RhnPatchDiffWriter

public RhnPatchDiffWriter(java.lang.String fromPath,
                          java.lang.String toPath,
                          java.util.Date fromDate,
                          java.util.Date toDate)

Parameters:

fromPath - The from(old, first) file's path

toPath - The to(new, second) file's path

fromDate - The from(old, first) file's last modified date.

toDate - The to(new, second) file's last modified date.

Method Detail

writeHunk

public void writeHunk(Hunk hunkIn)

Write the diff, one hunk at a time.

Specified by:

writeHunk in interface DiffWriter

Parameters:

hunkIn - A collection of lines for a diff that represents a similar edit state

accept

public void accept(ChangeHunk hunk)

Standard visitor

Specified by:

accept in interface DiffVisitor

Parameters:

hunk - ChangeHunk

accept

public void accept(DeleteHunk hunk)

Standard visitor

Specified by:

accept in interface DiffVisitor

Parameters:

hunk - DeleteHunk

accept

public void accept(InsertHunk hunk)

Standard visitor

Specified by:

accept in interface DiffVisitor

Parameters:

hunk - InsertHunk

accept

public void accept(MatchHunk hunk)

Standard visitor

Specified by:

accept in interface DiffVisitor

Parameters:

hunk - MatchHunk

getResult

public java.lang.String getResult()

Returns:

The patch diff.