smor        2002/07/12 14:36:45

  Modified:    .        maven.xml
               src/java/org/apache/maven/jelly/tags/project
                        MavenTagLibrary.java
  Added:       src/java/org/apache/maven/jelly/tags/project AskTag.java
  Log:
  Introduced an AskTag, that asks the user a question and stores the answer in
  a variable.
  
  Eg:
  <ask question="Where do you want to install Maven ?"
       answer="ask.tag.answer"
       default="/usr/local/maven"/>
  will output this :
  Where do you want to install Maven ? [/usr/local/maven]
  /home/foo/maven
  
  This will put the "/home/foo/maven" in a ${ask.tag.answer}, and will use
  "/usr/local/maven" if empty.
  
  There is also a "prompt" attribute that doesn't work yet :(
  It prints the prompt after the user's input ...
  
  There is a new useless "ask" goal that asks for your name, in maven.xml,
  it is simply for testing !
  
  Revision  Changes    Path
  1.14      +10 -1     jakarta-turbine-maven/maven.xml
  
  Index: maven.xml
  ===================================================================
  RCS file: /home/cvs/jakarta-turbine-maven/maven.xml,v
  retrieving revision 1.13
  retrieving revision 1.14
  diff -u -r1.13 -r1.14
  --- maven.xml 10 Jul 2002 01:42:10 -0000      1.13
  +++ maven.xml 12 Jul 2002 21:36:45 -0000      1.14
  @@ -1,6 +1,15 @@
   <project default="install" 
     xmlns:j="jelly:core"
  -  xmlns:m="maven">
  +  xmlns:m="maven"
  +  xmlns:maven="jelly:org.apache.maven.jelly.tags.project.MavenTagLibrary">
  +
  +  <!-- A dumb "ask" goal, just to see if it works ! :)                    -->
  +  <goal name="ask">
  +    <maven:ask question="What is your name ?" 
  +               answer="maven.ask.user.name" 
  +               default="default value"/>
  +    <echo>Welcome ${maven.ask.user.name} !</echo>
  +  </goal>
   
     <!-- ================================================================== -->
     <!-- I N S T A L L   P L U G I N S                                      -->
  
  
  
  1.6       +2 -1      
jakarta-turbine-maven/src/java/org/apache/maven/jelly/tags/project/MavenTagLibrary.java
  
  Index: MavenTagLibrary.java
  ===================================================================
  RCS file: 
/home/cvs/jakarta-turbine-maven/src/java/org/apache/maven/jelly/tags/project/MavenTagLibrary.java,v
  retrieving revision 1.5
  retrieving revision 1.6
  diff -u -r1.5 -r1.6
  --- MavenTagLibrary.java      9 Jul 2002 03:20:01 -0000       1.5
  +++ MavenTagLibrary.java      12 Jul 2002 21:36:45 -0000      1.6
  @@ -78,5 +78,6 @@
           registerTag("goalsToXML", GoalsToXML.class);
           registerTag("snapshot", SnapshotSignature.class);
           registerTag("addPath", AddPathTag.class);
  +        registerTag("ask", AskTag.class);
       }        
   }
  
  
  
  1.1                  
jakarta-turbine-maven/src/java/org/apache/maven/jelly/tags/project/AskTag.java
  
  Index: AskTag.java
  ===================================================================
  package org.apache.maven.jelly.tags.project;
  
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2002 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Maven" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Maven", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  
  import java.io.InputStreamReader;
  import java.io.BufferedReader;
  import java.io.IOException;
  
  import org.apache.commons.jelly.TagSupport;
  import org.apache.commons.jelly.XMLOutput;
  
  /**
   * Jelly Tag that asks the user a question, and puts his answer into
   * a variable, with the attribute "answer".
   * This variable may be reused further as any other Jelly variable.
   * @author <a href="mailto:[EMAIL PROTECTED]";>St�phane Mor</a>
   */
  public class AskTag extends TagSupport
  {
      /** The question to ask to the user */
      private String question;
  
      /** 
       * The variable in which we will stock the user's input.
       * This defaults to "interact.answer".
       */
      private String answer = "interact.answer";
  
      /** The default value, if the user doesn't answer */
      private String defaultInput;
  
      /** The user's input */
      private String input = "";
  
      /** The prompt to display before the user input */
      private String prompt = ">";
  
      /**
       * Sets the question to ask to the user. If a "default" attribute
       * is present, it will appear inside [].
       * @param question The question to ask to the user
       */
      public void setQuestion(String question)
      {
          this.question = question;
      }
  
      /**
       * Sets the name of the variable that will hold the answer
       * This defaults to "interact.answer".
       * @param answer the name of the variable that will hold the answer
       */
      public void setAnswer(String answer)
      {
          this.answer = answer;
      }
  
      /**
       * Sets the default answer to the question.
       * If it is present, it will appear inside [].
       * @param default the default answer to the question
       */
      public void setDefault(String defaultInput)
      {
          this.defaultInput = defaultInput;
      }
  
      /**
       * Sets the prompt that will be displayed before the user's input.
       * @param promt the prompt that will be displayed before the user's input.
       */
      public void setPrompt(String prompt)
      {
          this.prompt = prompt;
      }
  
  
      /**
       * Perform functionality provided by the tag
       * @param output the place to write output
       */
      public void doTag(XMLOutput output) 
      {
          if (question != null)
          {
              if (defaultInput != null)
              {
                  System.out.println(question + " [" + defaultInput + "]");
              }
              else
              {
                  System.out.println(question);
              }
              // The prompt should be just before the user's input, 
              // but it doesn't work ...
              //System.out.print(prompt + " ");
          }
  
          BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  
          try {
              input = br.readLine();
              if (defaultInput != null && input.equals(""))
              {
                  input = defaultInput;
              }
          } catch (IOException ioe) {
          }
          context.setVariable(answer, input);
      }
  }
  
  
  

--
To unsubscribe, e-mail:   <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>

Reply via email to