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From Matt Benson <gudnabr...@yahoo.com>
Subject Re: svn commit: r306851 - /ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java
Date Thu, 06 Oct 2005 19:18:13 GMT
testcase to come...

--- mbenson@apache.org wrote:

> Author: mbenson
> Date: Thu Oct  6 12:14:49 2005
> New Revision: 306851
> 
> URL:
> http://svn.apache.org/viewcvs?rev=306851&view=rev
> Log:
> greedy input handler; will consume stdin completely
> for unattended builds.
> 
> Added:
>    
>
ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java
>   (with props)
> 
> Added:
>
ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java
> URL:
>
http://svn.apache.org/viewcvs/ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java?rev=306851&view=auto
>
==============================================================================
> ---
>
ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java
> (added)
> +++
>
ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java
> Thu Oct  6 12:14:49 2005
> @@ -0,0 +1,80 @@
> +/*
> + * Copyright 2005 The Apache Software Foundation
> + *
> + *  Licensed 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.
> + *
> + */
> +
> +package org.apache.tools.ant.input;
> +
> +import java.io.InputStream;
> +import java.io.IOException;
> +import java.io.ByteArrayOutputStream;
> +import org.apache.tools.ant.BuildException;
> +import org.apache.tools.ant.taskdefs.StreamPumper;
> +import org.apache.tools.ant.util.FileUtils;
> +
> +/**
> + * Prompts on System.err, reads input from
> System.in until EOF
> + *
> + * @since Ant 1.7
> + */
> +public class GreedyInputHandler extends
> DefaultInputHandler {
> +
> +    private static final int BUFFER_SIZE = 1024;
> +
> +    /**
> +     * Empty no-arg constructor
> +     */
> +    public GreedyInputHandler() {
> +    }
> +
> +    /**
> +     * Prompts and requests input.
> +     * @param request the request to handle
> +     * @throws BuildException if not possible to
> read from console,
> +     *         or if input is invalid.
> +     */
> +    public void handleInput(InputRequest request)
> throws BuildException {
> +        String prompt = getPrompt(request);
> +        InputStream in = null;
> +        try {
> +            in = getInputStream();
> +            System.err.println(prompt);
> +            System.err.flush();
> +            ByteArrayOutputStream baos = new
> ByteArrayOutputStream();
> +            StreamPumper p = new StreamPumper(in,
> baos);
> +            Thread t = new Thread(p);
> +            t.start();
> +            try {
> +                t.join();
> +            } catch (InterruptedException e) {
> +                try {
> +                    t.join();
> +                } catch (InterruptedException e2) {
> +                }
> +            }
> +            request.setInput(new
> String(baos.toByteArray()));
> +            if (!(request.isInputValid())) {
> +                throw new BuildException(
> +                    "Received invalid console
> input");
> +            }
> +            if (p.getException() != null) {
> +                throw new BuildException(
> +                    "Failed to read input from
> console", p.getException());
> +            }
> +        } finally {
> +            FileUtils.close(in);
> +        }
> +    }
> +}
> 
> Propchange:
>
ant/core/trunk/src/main/org/apache/tools/ant/input/GreedyInputHandler.java
>
------------------------------------------------------------------------------
>     svn:eol-style = native
> 
> 
> 
>
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> 



		
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