org.apache.wiki.diff
Class ExternalDiffProvider

java.lang.Object
  org.apache.wiki.diff.ExternalDiffProvider

All Implemented Interfaces:

DiffProvider, WikiProvider

public class ExternalDiffProvider
extends Object
implements DiffProvider

This DiffProvider allows external command line tools to be used to generate the diff.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.wiki.diff.DiffProvider

DiffProvider.NullDiffProvider

Field Summary

static String

PROP_DIFFCOMMAND Determines the command to be used for 'diff'.

Fields inherited from interface org.apache.wiki.WikiProvider

LATEST_VERSION

Constructor Summary

ExternalDiffProvider()
Creates a new ExternalDiffProvider.

Method Summary

String	getProviderInfo() Return a valid HTML string for information.
void	initialize(WikiEngine engine, Properties properties) Initializes the page provider.
String	makeDiffHtml(WikiContext ctx, String p1, String p2) Makes the diff by calling "diff" program.

Methods inherited from class java.lang.Object

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

Field Detail

PROP_DIFFCOMMAND

public static final String PROP_DIFFCOMMAND

Determines the command to be used for 'diff'. This program must be able to output diffs in the unified format. For example 'diff -u %s1 %s2'.

See Also:

Constant Field Values

Constructor Detail

ExternalDiffProvider

public ExternalDiffProvider()

Creates a new ExternalDiffProvider.

Method Detail

getProviderInfo

public String getProviderInfo()

Description copied from interface: WikiProvider

Return a valid HTML string for information. May be anything.

Specified by:

getProviderInfo in interface WikiProvider

Returns:

A string describing the provider.

See Also:

{@inheritDoc}

initialize

public void initialize(WikiEngine engine,
                       Properties properties)
                throws NoRequiredPropertyException,
                       IOException

Initializes the page provider.

Specified by:

initialize in interface WikiProvider

Parameters:

engine - WikiEngine to own this provider

properties - A set of properties used to initialize this provider

Throws:

NoRequiredPropertyException - If the provider needs a property which is not found in the property set

IOException - If there is an IO problem

See Also:

WikiProvider.initialize(org.apache.wiki.WikiEngine, java.util.Properties)

makeDiffHtml

public String makeDiffHtml(WikiContext ctx,
                           String p1,
                           String p2)

Makes the diff by calling "diff" program. The return string is to be XHTML compliant ready to display html. No further processing of this text will be done by the wiki engine.

Specified by:

makeDiffHtml in interface DiffProvider

Parameters:

ctx - The Wiki Context

p1 - the old text

p2 - the new text

Returns:

An XHTML diff.