commonjava-developer

[<joh...@co...>]

Update of /cvsroot/commonjava/commonjava-projects/commonjava-console/src/java/org/commonjava/console
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv26752/src/java/org/commonjava/console

Added Files:
	PromptConfig.java SimplePrompt.java 
Log Message:
updated documentation in project.xml files, and added functionality to:

Console:
- provide convenient way to prompt the user for more information

Config:
- Provide snap-in container stacking, or scoping
- Provide a JBoss service implementation of a snap-in container

Probably other things, but I don't honestly remember everything...

--- NEW FILE: PromptConfig.java ---
/* Created on Feb 6, 2004 */
package org.commonjava.console;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;

import org.commonjava.console.option.OptionFormat;
import org.commonjava.lang.Verifiable;

/**
 * @author jdcasey
 */
public class PromptConfig implements Verifiable {
  
  private InputStream in;
  private OutputStream out;
  private PrintStream err;
  private String prompt;
  private OptionFormat answerFormat;
  private String defaultValue;

  /**
   * 
   */
  public PromptConfig() {
  }

  /* (non-Javadoc)
   * @see org.commonjava.lang.Verifiable#verifyValid()
   */
  public boolean verifyValid() {
    return in != null && out != null && err != null && prompt != null && answerFormat != null;
  }

  /**
   * @return
   */
  public OptionFormat getAnswerFormat() {
    return answerFormat;
  }

  /**
   * @return
   */
  public PrintStream getErr() {
    return err;
  }

  /**
   * @return
   */
  public InputStream getIn() {
    return in;
  }

  /**
   * @return
   */
  public OutputStream getOut() {
    return out;
  }

  /**
   * @return
   */
  public String getPrompt() {
    return prompt;
  }

  /**
   * @param format
   */
  public void setAnswerFormat(OptionFormat format) {
    answerFormat = format;
  }

  /**
   * @param stream
   */
  public void setErr(PrintStream stream) {
    err = stream;
  }

  /**
   * @param stream
   */
  public void setIn(InputStream stream) {
    in = stream;
  }

  /**
   * @param stream
   */
  public void setOut(OutputStream stream) {
    out = stream;
  }

  /**
   * @param string
   */
  public void setPrompt(String string) {
    prompt = string;
  }

  /**
   * @return
   */
  public String getDefaultValue() {
    return defaultValue;
  }

  /**
   * @param string
   */
  public void setDefaultValue(String string) {
    defaultValue = string;
  }

}

--- NEW FILE: SimplePrompt.java ---
/* Created on Feb 6, 2004 */
package org.commonjava.console;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;

import org.commonjava.console.option.OptionFormat;

/**
 * @author jdcasey
 */
public class SimplePrompt {
  
  private PromptConfig config;

  /**
   * 
   */
  public SimplePrompt(PromptConfig config) {
    if(!config.verifyValid()){
      throw new IllegalArgumentException("Prompt configuration is not complete.");
    }
    
    this.config = config;
  }
  
  public Object prompt() throws IOException{
    BufferedReader in = new BufferedReader(new InputStreamReader(config.getIn()));
    PrintStream out = new PrintStream(config.getOut());
    PrintStream err = config.getErr();
    
    String defaultVal = config.getDefaultValue();
    String answer = null;
    Object result = null;
    while(answer == null){
      out.print(config.getPrompt() + " ");
      out.flush();
      
      answer = in.readLine();
      OptionFormat format = config.getAnswerFormat();
      if(format.isValid(answer)){
        answer = null;
        out.println("You must supply a valid value. Please try again.");
      }
      else if(defaultVal != null && format.isValid(defaultVal)){
        result = format.getValue(defaultVal);
        break;
      }
      else{
        result = format.getValue(answer);
        break;
      }
    }
    
    return result;
  }

}