source: main/trunk/gli/src/org/greenstone/gatherer/util/InputStreamGobbler.java@ 31581

/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */

package org.greenstone.gatherer.util;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

// http://www.javaworld.com/article/2071275/core-java/when-runtime-exec---won-t.html?page=2
// This class is used in FormatConversionDialog to properly read from the stdout and stderr
// streams of a Process, Process.getInputStream() and Process.getErrorSream()
public class InputStreamGobbler extends Thread
{
    InputStream is = null;
    StringBuffer outputstr = new StringBuffer();
    boolean split_newlines = false;
    
    
    public InputStreamGobbler(InputStream is)
    {
    this.is = is;
    split_newlines = false;
    }
    
    public InputStreamGobbler(InputStream is, boolean split_newlines)
    {
    this.is = is;
    this.split_newlines = split_newlines;
    }
    
    public void run()
    {
    BufferedReader br = null;
    try {
        br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        String line=null;
        while ( (line = br.readLine()) != null) {
        //System.out.println("@@@ GOT LINE: " + line);
        outputstr.append(line);
        if(split_newlines) {
            outputstr.append("\n");
        }
        
        }
    } catch (IOException ioe) {
        ioe.printStackTrace();  
    } finally {
        SafeProcess.closeResource(br);
    }
    }
    
    public String getOutput() { 
    return outputstr.toString(); // implicit toString() call anyway. //return outputstr; 
    }
}