| 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 ); |
| } |
| } |
| |
| } |