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 output and error streams of a Process
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 {
	    Utility.closeResource(br);
	}
    }
    
    public String getOutput() { 
	return outputstr.toString(); // implicit toString() call anyway. //return outputstr; 
    }
}