package org.apache.maven.archetype.ui;
/*
* 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 org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
import org.codehaus.plexus.components.interactivity.InputHandler;
import org.codehaus.plexus.components.interactivity.OutputHandler;
import org.codehaus.plexus.components.interactivity.Prompter;
import org.codehaus.plexus.components.interactivity.PrompterException;
import org.codehaus.plexus.util.StringUtils;
import java.io.IOException;
import java.util.List;
/**
* @author raphaelpieroni
*/
@Component( role = Prompter.class, hint = "archetype" )
public class ArchetypePrompter
implements Prompter
{
@Requirement
private OutputHandler outputHandler;
@Requirement
private InputHandler inputHandler;
public String prompt( String message )
throws PrompterException
{
writePrompt( message );
return readLine();
}
public String prompt( String message, String defaultReply )
throws PrompterException
{
writePrompt( formatMessage( message, null, defaultReply ) );
String line = readLine();
if ( StringUtils.isEmpty( line ) )
{
line = defaultReply;
}
return line;
}
@SuppressWarnings( { "rawtypes", "unchecked" })
public String prompt( String message, List possibleValues, String defaultReply )
throws PrompterException
{
String formattedMessage = formatMessage( message, possibleValues, defaultReply );
String line;
do
{
writePrompt( formattedMessage );
line = readLine();
if ( StringUtils.isEmpty( line ) )
{
line = defaultReply;
}
if ( line != null && !possibleValues.contains( line ) )
{
try
{
outputHandler.writeLine( "Invalid selection." );
}
catch ( IOException e )
{
throw new PrompterException( "Failed to present feedback", e );
}
}
}
while ( line == null || !possibleValues.contains( line ) );
return line;
}
@SuppressWarnings( "rawtypes" )
public String prompt( String message, List possibleValues )
throws PrompterException
{
return prompt( message, possibleValues, null );
}
public String promptForPassword( String message )
throws PrompterException
{
writePrompt( message );
try
{
return inputHandler.readPassword();
}
catch ( IOException e )
{
throw new PrompterException( "Failed to read user response", e );
}
}
private String formatMessage( String message, List<String> possibleValues, String defaultReply )
{
StringBuffer formatted = new StringBuffer( message.length() * 2 );
formatted.append( message );
/*
* if ( possibleValues != null && !possibleValues.isEmpty() ) { formatted.append( " (" ); for ( Iterator it =
* possibleValues.iterator(); it.hasNext(); ) { String possibleValue = (String) it.next(); formatted.append(
* possibleValue ); if ( it.hasNext() ) { formatted.append( '/' ); } } formatted.append( ')' ); }
*/
if ( defaultReply != null )
{
formatted.append( defaultReply );
}
return formatted.toString();
}
private void writePrompt( String message )
throws PrompterException
{
showMessage( message + ": " );
}
private String readLine()
throws PrompterException
{
try
{
return inputHandler.readLine();
}
catch ( IOException e )
{
throw new PrompterException( "Failed to read user response", e );
}
}
public void showMessage( String message )
throws PrompterException
{
try
{
outputHandler.write( message );
}
catch ( IOException e )
{
throw new PrompterException( "Failed to show message", e );
}
}
}