/* copyright Spry Software, Inc., 2006-2007

package spry.ui;

import java.io.*;
import java.util.regex.*;

import spry.input.DataFileReader;
import spry.input.DataFileReaderFactory;
import spry.input.RecordSaver;
import spry.input.RecordUser;
import spry.input.ReplaceFilter;


public class DataFileFilter {
	
	File inputFile;
			
	public DataFileFilter()
	{		
	}		
	
	/**
	 * @param inputFileName The intputFileName to set.
	 */
	public void setInputFileName(String inputFileName) {
		inputFile = new File(inputFileName);
	}
	
	
	private static void printUsage()
	{
		System.out.println(
		"Usage: java spry.ui.DataFileFilter [filter] datafile ...");
		System.out.println(" the filter currently available is: ");
		System.out.println("replace in the form --replace:MIR.lot_id=aaa to make the lotid aaa ");
		
	}
	
	public static void main(String[] args) {
		if (args.length == 0 || args[0].equals("--help"))
		{
			printUsage();
			System.exit(1);
		}
		DataFileReaderFactory.getInstance();
		int argsIndex = 0;
		java.io.File inputFile = null;
		String replaceStr = "--replace:(\\w+)\\.([\\w_]+)=(\\w+)";
		Pattern replace = Pattern.compile(replaceStr);
		java.util.ArrayList filters = new java.util.ArrayList();
		File outputFile = null;
		while (argsIndex < args.length)
		{
			Matcher replaceMatcher = replace.matcher(args[argsIndex]);
			if (replaceMatcher.matches())
			{
				if (replaceMatcher.groupCount() == 3)
				{
					ReplaceFilter filter = new ReplaceFilter(replaceMatcher.group(1),
							replaceMatcher.group(2), replaceMatcher.group(3));
					filters.add(filter);
				}
				else
					System.out.println("Unexpected replace group count "+
							replaceMatcher.groupCount());
			}
			else 
			{
				inputFile = new File(args[argsIndex]);
				if (!inputFile.exists())
				{
					System.err.println("Input file " + inputFile + 
							" does not exist.\n");
					System.exit(2);
				}
				outputFile = new File(inputFile.getAbsolutePath() + ".temp");
				
			}
			argsIndex++;
		}
		
		DataFileReader reader = DataFileReaderFactory.getInstance().getReader(inputFile);
		if (reader == null)
		{
			System.err.println("Could not find reader for " + inputFile + 
					", exiting.\n");
			System.exit(3);
		}
		java.util.Iterator iter = filters.iterator();
		while (iter.hasNext())
		{
			RecordUser filter = (RecordUser)iter.next();
			reader.addRecordUser(filter);
		}
		try
		{
			OutputStream output = new BufferedOutputStream(new FileOutputStream(outputFile));
			reader.addRecordUser(new RecordSaver(output));
			reader.readFile(inputFile);
			output.close();
			if (inputFile.delete())
				outputFile.renameTo(inputFile);
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		System.exit(0);
	}

}