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MPLUGIN-40: All plugins should by default have an auto-generated goal 'help' 

o created a new Mojo which generates a generic HelpMojo class
o added PluginHelpGenerator which does the generation
o maven-plugin-plugin should extends maven-plugins for the look&feel
o update the documentation

git-svn-id: https://svn.apache.org/repos/asf/maven/plugin-tools/trunk@617289 13f79535-47bb-0310-9956-ffa450edef68
master
Vincent Siveton 2008-01-31 23:23:02 +00:00
parent dfebacc116
commit 194c3a8eca
9 changed files with 812 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
maven-plugin-plugin/pom.xml
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@ -16,29 +16,34 @@
~ KIND, either express or implied. See the License for the
~ specific language governing permissions and limitations
~ under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<parent>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-tools</artifactId>
<version>2.4-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugins</artifactId>
<version>8</version>
</parent>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<version>2.4-SNAPSHOT</version>
<packaging>maven-plugin</packaging>
<name>Maven PLUGIN Plugin</name>
<description>
The Plugin Plugin is used to create a Maven plugin descriptor for any Mojo's found in the source tree,
to include in the JAR. It is also used to generate Xdoc files for the Mojos as well as for updating the
plugin registry and the artifact metadata.
The Plugin Plugin is used to create a Maven plugin descriptor for any Mojo's found in the source tree,
to include in the JAR. It is also used to generate Xdoc files for the Mojos as well as for updating the
plugin registry, the artifact metadata and a generic help goal.
</description>
<inceptionYear>2001</inceptionYear>
<prerequisites>
<maven>2.0.6</maven>
</prerequisites>
<dependencies>
<!-- maven -->
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
@ -130,14 +135,54 @@
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>1.4.5</version>
</dependency>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-container-default</artifactId>
<version>1.0-alpha-9</version>
</dependency>
</dependencies>
<!-- Copy from project up -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-tools-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-tools-model</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-tools-java</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-tools-beanshell</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-descriptor</artifactId>
<version>2.0.5</version>
</dependency>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>1.4.9</version>
</dependency>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-container-default</artifactId>
<version>1.0-alpha-9</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<pluginManagement>
<plugins>
@ -149,24 +194,33 @@
</plugin>
</plugins>
</pluginManagement>
<!-- TODO add this
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<executions>
<execution>
<id>generated-helpmojo</id>
<goals>
<goal>helpmojo</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
-->
</build>
<properties>
<doxia.version>1.0-alpha-10-SNAPSHOT</doxia.version>
<doxia-sitetools.version>1.0-alpha-10-SNAPSHOT</doxia-sitetools.version>
</properties>
<distributionManagement>
<site>
<id>apache.website</id>
<url>scp://people.apache.org/www/maven.apache.org/plugins/maven-plugin-plugin</url>
</site>
</distributionManagement>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
</plugin>
</plugins>
</reporting>
</project>

71
maven-plugin-plugin/src/main/java/org/apache/maven/plugin/plugin/HelpGeneratorMojo.java 100644
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@ -0,0 +1,71 @@
package org.apache.maven.plugin.plugin;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.io.File;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.tools.plugin.generator.Generator;
import org.apache.maven.tools.plugin.generator.PluginHelpGenerator;
/**
* Generates an <code>HelpMojo</code> class.
*
* @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a>
* @version $Id$
* @since 2.4
* @goal helpmojo
* @phase generate-sources
*/
public class HelpGeneratorMojo
extends AbstractGeneratorMojo
{
/**
* The directory where the generated <code>HelpMojo</code> file will be put.
*
* @parameter expression="${project.build.directory}/generated-sources/plugin"
* @required
*/
protected File outputDirectory;
/** {@inheritDoc} */
protected File getOutputDirectory()
{
return outputDirectory;
}
/** {@inheritDoc} */
protected Generator createGenerator()
{
return new PluginHelpGenerator( getLog() );
}
/** {@inheritDoc} */
public void execute()
throws MojoExecutionException
{
super.execute();
if ( !project.getCompileSourceRoots().contains( outputDirectory.getAbsolutePath() ) )
{
project.addCompileSourceRoot( outputDirectory.getAbsolutePath() );
}
}
}

54
maven-plugin-plugin/src/site/apt/examples/generate-help.apt 100644
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@ -0,0 +1,54 @@
------
Configuring Generation of Help Mojo
------
Vincent Siveton
------
January 2008
------
~~ Licensed to the Apache Software Foundation (ASF) under one
~~ or more contributor license agreements. See the NOTICE file
~~ distributed with this work for additional information
~~ regarding copyright ownership. The ASF licenses this file
~~ to you under the Apache License, Version 2.0 (the
~~ "License"); you may not use this file except in compliance
~~ with the License. You may obtain a copy of the License at
~~
~~ http://www.apache.org/licenses/LICENSE-2.0
~~
~~ Unless required by applicable law or agreed to in writing,
~~ software distributed under the License is distributed on an
~~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
~~ KIND, either express or implied. See the License for the
~~ specific language governing permissions and limitations
~~ under the License.
Configuring Generation of Help Mojo
To configure the generation of an <<<Help>>> Mojo, add the following to the project's pom:
+-----+
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<executions>
<execution>
<id>generated-helpmojo</id>
<goals>
<goal>helpmojo</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
...
</build>
...
</project>
+-----+
The mojo is generated by default in <<<$\{project.build.directory\}/generated-sources/plugin>>>.

46
maven-plugin-plugin/src/site/apt/examples/generate-report.apt 100644
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@ -0,0 +1,46 @@
------
Configuring Generation of Documentation Reports
------
Vincent Siveton
------
January 2008
------
~~ Licensed to the Apache Software Foundation (ASF) under one
~~ or more contributor license agreements. See the NOTICE file
~~ distributed with this work for additional information
~~ regarding copyright ownership. The ASF licenses this file
~~ to you under the Apache License, Version 2.0 (the
~~ "License"); you may not use this file except in compliance
~~ with the License. You may obtain a copy of the License at
~~
~~ http://www.apache.org/licenses/LICENSE-2.0
~~
~~ Unless required by applicable law or agreed to in writing,
~~ software distributed under the License is distributed on an
~~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
~~ KIND, either express or implied. See the License for the
~~ specific language governing permissions and limitations
~~ under the License.
Configuring Generation of Documentation Reports
To configure the generation of the documentation reports, add the following to the project's pom:
+-----+
<project>
...
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
</plugin>
</plugins>
...
</reporting>
...
</project>
+-----+
The documentation is generated by default in <<<$\{project.build.directory\}/site>>>.

14
maven-plugin-plugin/src/site/apt/index.apt
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@ -3,7 +3,7 @@
------
Maria Odea Ching
------
27 July 2006
January 2008
------
~~ Licensed to the Apache Software Foundation (ASF) under one
@ -26,11 +26,12 @@
Maven 2 Plugin Plugin
The Plugin Plugin is used to create a Maven plugin descriptor for any Mojo's found in the source tree, to include in the JAR.
It is also used to generate Xdoc files for the Mojos as well as for updating the plugin registry and the artifact metadata.
It is also used to generate Xdoc files for the Mojos as well as for updating the plugin registry, the artifact metadata and
a generic help goal.
* Goals Overview
The Plugin Plugin has five goals:
The Plugin Plugin has six goals:
* {{{descriptor-mojo.html}plugin:descriptor}} generates a plugin descriptor.
@ -45,6 +46,8 @@ Maven 2 Plugin Plugin
artifact, for subsequent installation and deployment. The first use-case for this is to add the LATEST metadata
(which is plugin-specific) for shipping alongside the plugin's artifact.
* {{{helpmojo-mojo.html}helpmojo}} generates an help mojo with describes all project mojos.
* Usage
Instructions on how to use the Plugin Plugin can be found {{{usage.html}here}}.
@ -55,7 +58,6 @@ Maven 2 Plugin Plugin
* {{{examples/generate-descriptor.html}Configuring Generation of Plugin Descriptor}}
* {{{examples/generate-help.html}Configuring Generation of Help Mojo}}
[]

16
maven-plugin-plugin/src/site/apt/usage.apt
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@ -2,8 +2,9 @@
Usage
------
Maria Odea Ching
Vincent Siveton
------
27 July 2006
January 2008
------
~~ Licensed to the Apache Software Foundation (ASF) under one
@ -40,7 +41,7 @@ Usage
mvn package
+-----+
You will see that the plugin.xml file is generated in the target/classes/META-INF/maven directory of your project. The file is
You will see that the plugin.xml file is generated in the <<<target/classes/META-INF/maven>>> directory of your project. The file is
also bundled in the generated jar file.
To explicitly execute the <<<plugin:descriptor>>> goal, type the following in the command line:
@ -57,6 +58,8 @@ mvn plugin:descriptor
mvn plugin:xdoc
+-----+
The xdoc file is generated by default in <<<$\{project.build.directory\}/generated-site/xdoc>>>.
* The <<<plugin:updateRegistry>>> Goal
The <<<plugin:updateRegistry>>> goal is bound to the <<<install>>> phase of the build life cycle. This goal updates the
@ -88,3 +91,12 @@ mvn plugin:updateRegistry
mvn package
+-----+
* The <<<plugin:helpmojo>>> Goal
To generate an <<<HelpMojo>>> for the mojos of your plugin, execute the following on the command line:
+-----+
mvn plugin:helpmojo
+-----+
The mojo is generated by default in <<<$\{project.build.directory\}/generated-sources/plugin>>>.

6
maven-plugin-plugin/src/site/site.xml
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@ -21,7 +21,6 @@
<project name="Maven Plugin Plugin">
<body>
<menu name="Overview">
<item name="Introduction" href="index.html"/>
<item name="Goals" href="plugin-info.html"/>
@ -31,11 +30,12 @@
<menu name="Examples">
<item name="Configuring Generation of Plugin Descriptor" href="/examples/generate-descriptor.html"/>
<item name="Configuring Generation of Plugin Documentation" href="/examples/generate-report.html"/>
<item name="Configuring Generation of HelpMojo" href="/examples/generate-help.html"/>
</menu>
<menu name="Developers">
<item name="Multiple Language Support: Redesign Notes" href="multiple-language-support.html"/>
</menu>
</body>
</project>

534
maven-plugin-tools-api/src/main/java/org/apache/maven/tools/plugin/generator/PluginHelpGenerator.java 100644
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@ -0,0 +1,534 @@
package org.apache.maven.tools.plugin.generator;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;
import java.io.Writer;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.parser.ParserDelegator;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.Parameter;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.plugin.logging.Log;
import org.codehaus.plexus.util.IOUtil;
import org.codehaus.plexus.util.StringUtils;
/**
* Generates an <code>HelpMojo</code> class.
*
* @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a>
* @version $Id$
* @since 2.4
*/
public class PluginHelpGenerator
implements Generator
{
private static final String LS = System.getProperty( "line.separator" );
private static final String HELP_MOJO_CLASS_NAME = "HelpMojo";
private static final String HELP_GOAL = "help";
private final Log log;
/**
* Default constructor
*
* @param log
*/
public PluginHelpGenerator( Log log )
{
this.log = log;
}
// ----------------------------------------------------------------------
// Public methods
// ----------------------------------------------------------------------
/** {@inheritDoc} */
public void execute( File destinationDirectory, PluginDescriptor pluginDescriptor )
throws IOException
{
if ( pluginDescriptor.getMojos() == null || pluginDescriptor.getMojos().size() < 1 )
{
return;
}
String packageName = discoverPackageName( pluginDescriptor );
File helpClass = new File( destinationDirectory, packageName.replace( '.', File.separatorChar )
+ File.separator + HELP_MOJO_CLASS_NAME + ".java" );
// Verify that no help goal already exists
for ( Iterator it = pluginDescriptor.getMojos().iterator(); it.hasNext(); )
{
MojoDescriptor descriptor = (MojoDescriptor) it.next();
if ( descriptor.getGoal().equals( HELP_GOAL )
&& !descriptor.getImplementation().equals( packageName + "." + HELP_MOJO_CLASS_NAME ) )
{
if ( log.isWarnEnabled() )
{
log.warn( "\n\nAn help goal (" + descriptor.getImplementation()
+ ") already exists in this plugin. SKIPPED THE " + HELP_MOJO_CLASS_NAME + " GENERATION.\n" );
}
return;
}
}
helpClass.getParentFile().mkdirs();
Writer writer = null;
try
{
writer = new FileWriter( helpClass );
writeClass( writer, packageName, pluginDescriptor );
writer.flush();
}
finally
{
IOUtil.close( writer );
}
}
// ----------------------------------------------------------------------
// Private methods
// ----------------------------------------------------------------------
/**
* @return the help goal for the generated mojo
*/
private static String getHelpGoalName()
{
return HELP_GOAL;
}
/**
* @return the full help goal name for the generated mojo
*/
private static String getFullHelpGoalName( PluginDescriptor pluginDescriptor )
{
return pluginDescriptor.getGoalPrefix() + ":" + getHelpGoalName();
}
/**
* @param pluginDescriptor
* @return the help description for the generated mojo
*/
private static String getHelpDescription( PluginDescriptor pluginDescriptor )
{
return "Display help information on '" + pluginDescriptor.getPluginLookupKey() + "' plugin. Call 'mvn "
+ getFullHelpGoalName( pluginDescriptor ) + " -Ddetail=true' to display all details.";
}
/**
* Find the best package name, based on the number of hits of actual Mojo classes.
*
* @param pluginDescriptor
* @return the best name of the package for the generated mojo
*/
private static String discoverPackageName( PluginDescriptor pluginDescriptor )
{
Map packageNames = new HashMap();
for ( Iterator it = pluginDescriptor.getMojos().iterator(); it.hasNext(); )
{
MojoDescriptor descriptor = (MojoDescriptor) it.next();
String impl = descriptor.getImplementation();
if ( impl.lastIndexOf( '.' ) != -1 )
{
String name = impl.substring( 0, impl.lastIndexOf( '.' ) );
if ( packageNames.get( name ) != null )
{
int next = ( (Integer) packageNames.get( name ) ).intValue() + 1;
packageNames.put( name, Integer.valueOf( "" + next ) );
}
else
{
packageNames.put( name, Integer.valueOf( "" + 1 ) );
}
}
else
{
packageNames.put( "", Integer.valueOf( "" + 1 ) );
}
}
String packageName = "";
int max = 0;
for ( Iterator it = packageNames.keySet().iterator(); it.hasNext(); )
{
String key = it.next().toString();
int value = ( (Integer) packageNames.get( key ) ).intValue();
if ( value > max )
{
max = value;
packageName = key;
}
}
return packageName;
}
/**
* Generated the <code>HelpMojo</code> class.
*
* @param writer
* @param packageName
* @param pluginDescriptor
* @throws IOException if any
*/
private static void writeClass( Writer writer, String packageName, PluginDescriptor pluginDescriptor )
throws IOException
{
if ( packageName.length() > 0 )
{
writer.write( "package " + packageName + ";" + LS );
writer.write( LS );
}
writeImports( writer );
writer.write( LS );
writeMojoJavadoc( writer, pluginDescriptor );
writer.write( "public class HelpMojo" + LS );
writer.write( " extends AbstractMojo" + LS );
writer.write( "{" + LS );
writeVariables( writer );
writer.write( LS );
writeExecute( writer, pluginDescriptor );
writer.write( LS );
writeUtilities( writer );
writer.write( "}" + LS );
}
private static void writeImports( Writer writer )
throws IOException
{
writer.write( "import java.util.ArrayList;" + LS );
writer.write( "import java.util.Iterator;" + LS );
writer.write( "import java.util.List;" + LS );
writer.write( "import java.util.StringTokenizer;" + LS );
writer.write( LS );
writer.write( "import org.apache.maven.plugin.AbstractMojo;" + LS );
writer.write( "import org.apache.maven.plugin.MojoExecutionException;" + LS );
}
private static void writeMojoJavadoc( Writer writer, PluginDescriptor pluginDescriptor )
throws IOException
{
writer.write( "/**" + LS );
writer.write( " * " + getHelpDescription( pluginDescriptor ) + LS );
writer.write( " *" + LS );
writer.write( " * @version generated on " + new Date() + LS );
writer.write( " * @goal " + getHelpGoalName() + LS );
writer.write( " */" + LS );
}
private static void writeVariables( Writer writer )
throws IOException
{
writer.write( " /** 80-character display buffer */" + LS );
writer.write( " private static final int DEFAULT_WIDTH = 80;" + LS );
writer.write( LS );
writer.write( " /** 4 indent spaces */" + LS );
writer.write( " private static final String DEFAULT_INDENT = repeat( \" \", 4 );" + LS );
writer.write( LS );
writer.write( " /**" + LS );
writer.write( " * If true, display all settable properies for each goal." + LS );
writer.write( " *" + LS );
writer.write( " * @parameter expression=\"${detail}\" default-value=\"false\"" + LS );
writer.write( " */" + LS );
writer.write( " private boolean detail;" + LS );
}
private static void writeExecute( Writer writer, PluginDescriptor pluginDescriptor )
throws IOException
{
writer.write( " /** {@inheritDoc} */" + LS );
writer.write( " public void execute()" + LS );
writer.write( " throws MojoExecutionException" + LS );
writer.write( " {" + LS );
writer.write( " StringBuffer sb = new StringBuffer();" + LS );
writer.write( LS );
writer.write( " sb.append( \"The '" + pluginDescriptor.getPluginLookupKey() + "' plugin has "
+ ( pluginDescriptor.getMojos().size() + 1 ) + " "
+ ( ( pluginDescriptor.getMojos().size() + 1 ) > 1 ? "goals" : "goal" ) + ":\" ).append( \"\\n\" );" + LS );
writer.write( " sb.append( \"\\n\" );" + LS );
writer.write( LS );
for ( Iterator it = pluginDescriptor.getMojos().iterator(); it.hasNext(); )
{
MojoDescriptor descriptor = (MojoDescriptor) it.next();
String goal = descriptor.getFullGoalName();
String description = StringUtils.isNotEmpty( descriptor.getDescription() ) ? toText( descriptor
.getDescription() ) : "No description available.";
writer.write( " sb.append( \"" + goal + "\" ).append( \"\\n\" );" + LS );
writer.write( " for ( Iterator it = toLines( \"" + description + "\" ).iterator(); it.hasNext(); )"
+ LS );
writer.write( " {" + LS );
writer.write( " sb.append( it.next().toString() ).append( \"\\n\" );" + LS );
writer.write( " }" + LS );
if ( descriptor.getParameters() != null && descriptor.getParameters().size() > 0 )
{
writer.write( " if ( detail )" + LS );
writer.write( " {" + LS );
writer.write( " sb.append( \"\\n\" );" + LS );
writer.write( LS );
writer.write( " sb.append( repeat( \" \", 4 ) );" + LS );
writer.write( " sb.append( \"Available parameters:\" ).append( \"\\n\" );" + LS );
writer.write( LS );
writer.write( " sb.append( \"\\n\" );" + LS );
writer.write( LS );
for ( Iterator it2 = descriptor.getParameters().iterator(); it2.hasNext(); )
{
Parameter parameter = (Parameter) it2.next();
if ( parameter.isEditable() )
{
String expression = parameter.getExpression();
if ( expression == null || !expression.startsWith( "${component." ) )
{
String parameterName = parameter.getName();
String parameterDescription = StringUtils.isNotEmpty( parameter.getDescription() )
? toText( parameter
.getDescription() )
: "No description available.";
String parameterDefaultValue = parameterName
+ ( StringUtils.isNotEmpty( parameter.getDefaultValue() ) ? " (Default: '"
+ parameter.getDefaultValue() + "')" : "" );
writer.write( " for ( Iterator it = toLines( \"" + parameterDefaultValue
+ "\", repeat( \" \", 4 ), DEFAULT_WIDTH ).iterator(); it.hasNext(); )" + LS );
writer.write( " {" + LS );
writer.write( " sb.append( it.next().toString() ).append( \"\\n\" );" + LS );
writer.write( " }" + LS );
writer.write( " for ( Iterator it = toLines( \"" + parameterDescription
+ "\", repeat( \" \", 8 ), DEFAULT_WIDTH ).iterator(); it.hasNext(); )" + LS );
writer.write( " {" + LS );
writer.write( " sb.append( it.next().toString() ).append( \"\\n\" );" + LS );
writer.write( " }" + LS );
}
}
}
writer.write( " }" + LS );
}
writer.write( LS );
writer.write( " sb.append( \"\\n\" );" + LS );
writer.write( LS );
}
// TODO Should be discovered
writer.write( " sb.append( \"" + getFullHelpGoalName( pluginDescriptor ) + "\" ).append( \"\\n\" );"
+ LS );
writer.write( " for ( Iterator it = toLines( \"" + getHelpDescription( pluginDescriptor )
+ "\" ).iterator(); it.hasNext(); )" + LS );
writer.write( " {" + LS );
writer.write( " sb.append( it.next().toString() ).append( \"\\n\" );" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " if ( getLog().isInfoEnabled() )" + LS );
writer.write( " {" + LS );
writer.write( " getLog().info( sb.toString() );" + LS );
writer.write( " }" + LS );
writer.write( " }" + LS );
}
private static void writeUtilities( Writer writer )
throws IOException
{
writer.write( " /**" + LS );
writer.write( " * <p>Repeat a String <code>n</code> times to form a new string.</p>" + LS );
writer.write( " *" + LS );
writer.write( " * @param str String to repeat" + LS );
writer.write( " * @param repeat number of times to repeat str" + LS );
writer.write( " * @return String with repeated String" + LS );
writer.write( " * @throws NegativeArraySizeException if <code>repeat < 0</code>" + LS );
writer.write( " * @throws NullPointerException if str is <code>null</code>" + LS );
writer.write( " */" + LS );
writer.write( " private static String repeat( String str, int repeat )" + LS );
writer.write( " {" + LS );
writer.write( " StringBuffer buffer = new StringBuffer( repeat * str.length() );" + LS );
writer.write( LS );
writer.write( " for ( int i = 0; i < repeat; i++ )" + LS );
writer.write( " {" + LS );
writer.write( " buffer.append( str );" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " return buffer.toString();" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " /**" + LS );
writer.write( " * <p>Give a list of lines for the <code>str</code>. " + "Each line is indented by 4 spaces"
+ LS );
writer.write( " * and has a maximum of <code>80</code> characters.</p>" + LS );
writer.write( " *" + LS );
writer.write( " * @param str String to split in lines" + LS );
writer.write( " * @return List of lines" + LS );
writer.write( " * @throws NullPointerException if str is <code>null</code>" + LS );
writer.write( " */" + LS );
writer.write( " private static List toLines( String str )" + LS );
writer.write( " {" + LS );
writer.write( " return toLines( str, DEFAULT_INDENT, DEFAULT_WIDTH );" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " /**" + LS );
writer
.write( " * <p>Give a list of lines for the <code>str</code>. Each line is indented by <code>indent</code>"
+ LS );
writer.write( " * and has a maximum of <code>size</code> characters.</p>" + LS );
writer.write( " *" + LS );
writer.write( " * @param str String to split in lines" + LS );
writer.write( " * @param indent the string to precede each line" + LS );
writer.write( " * @param size the size of the character display buffer" + LS );
writer.write( " * @return List of lines" + LS );
writer.write( " * @throws IllegalArgumentException if <code>size < 0</code>" + LS );
writer.write( " * @throws NullPointerException if str is <code>null</code>" + LS );
writer.write( " */" + LS );
writer.write( " private static List toLines( String str, String indent, int size )" + LS );
writer.write( " {" + LS );
writer.write( " List sentences = new ArrayList();" + LS );
writer.write( LS );
writer.write( " if ( indent == null )" + LS );
writer.write( " {" + LS );
writer.write( " indent = \"\";" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " if ( size < 0 )" + LS );
writer.write( " {" + LS );
writer.write( " throw new IllegalArgumentException( \"size should be positive\" );" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " StringBuffer tmp = new StringBuffer( indent );" + LS );
writer.write( " StringTokenizer tokenizer = new StringTokenizer( str, \" \" );" + LS );
writer.write( " while ( tokenizer.hasMoreTokens() )" + LS );
writer.write( " {" + LS );
writer.write( " String word = tokenizer.nextToken();" + LS );
writer.write( LS );
writer.write( " if ( tmp.length() + word.length() + 1 < size )" + LS );
writer.write( " {" + LS );
writer.write( " tmp.append( word ).append( \" \" );" + LS );
writer.write( " }" + LS );
writer.write( " else" + LS );
writer.write( " {" + LS );
writer.write( " sentences.add( tmp.toString() );" + LS );
writer.write( " tmp = new StringBuffer( indent );" + LS );
writer.write( " tmp.append( word ).append( \" \" );" + LS );
writer.write( " }" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " if ( tmp.toString().length() > 0 )" + LS );
writer.write( " {" + LS );
writer.write( " sentences.add( tmp.toString() );" + LS );
writer.write( " }" + LS );
writer.write( LS );
writer.write( " return sentences;" + LS );
writer.write( " }" + LS );
}
/**
* Remove HTML tags from a string
*
* @param str
* @return a String with HTML tags into pure text
* @throws IOException if any
*/
private static String toText( String str )
throws IOException
{
if ( StringUtils.isEmpty( str ) )
{
return "";
}
final StringBuffer sb = new StringBuffer();
HTMLEditorKit.Parser parser = new ParserDelegator();
HTMLEditorKit.ParserCallback htmlCallback = new HTMLEditorKit.ParserCallback()
{
/** {@inheritDoc} */
public void handleText( char[] data, int pos )
{
// the parser parses things like <br /> as "\n>"
if ( data[0] == '>' )
{
for ( int i = 1; i < data.length; i++ )
{
if ( data[i] == '\n' )
{
sb.append( ' ' );
}
else
{
sb.append( data[i] );
}
}
}
else
{
for ( int i = 0; i < data.length; i++ )
{
if ( data[i] == '\n' )
{
sb.append( ' ' );
}
else
{
sb.append( data[i] );
}
}
}
}
};
parser.parse( new StringReader( str ), htmlCallback, true );
return StringUtils.replace( sb.toString(), "\"", "'" ); // for CDATA
}
}

7
maven-plugin-tools-java/src/main/java/org/apache/maven/tools/plugin/extractor/java/JavaMojoDescriptorExtractor.java
View File

@ -568,6 +568,13 @@ public class JavaMojoDescriptorExtractor
builder.addSourceTree( new File( (String) i.next() ) );
}
// TODO be more dynamic
if ( !project.getCompileSourceRoots()
.contains( new File( project.getBasedir(), "target/generated-sources/plugin" ).getAbsolutePath() ) )
{
builder.addSourceTree( new File( project.getBasedir(), "target/generated-sources/plugin" ) );
}
return builder.getClasses();
}