source: trunk/EventBenchConsole/src/de/ugoe/cs/eventbench/jfc/commands/CMDpreprocessJFC.java @ 317

package de.ugoe.cs.eventbench.jfc.commands;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.security.InvalidParameterException;
import java.util.List;

import de.ugoe.cs.util.console.Command;
import de.ugoe.cs.util.console.Console;

/**
 * <p>
 * Command to pre-process files written by EventBench's JFCMonitor. The only task
 * of the pre-processing is checking if the session was closed properly, i.e.,
 * if the XML file ends with a {@code </sessions>} tag. If this is not the case,
 * the tag will be appended to the file.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 */
public class CMDpreprocessJFC implements Command {

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#run(java.util.List)
         */
        @Override
        public void run(List<Object> parameters) {
                String source;
                String target;
                try {
                        source = (String) parameters.get(0);
                        target = (String) parameters.get(1);
                } catch (Exception e) {
                        throw new InvalidParameterException();
                }

                File file = new File(source);
                InputStreamReader reader;
                try {
                        FileInputStream fis = new FileInputStream(file);
                        reader = new InputStreamReader(fis, "UTF-16");
                } catch (FileNotFoundException e) {
                        Console.printerrln(e.getMessage());
                        return;
                } catch (UnsupportedEncodingException e) {
                        Console.printerrln(e.getMessage());
                        return;
                }
                char[] buffer = new char[(int) file.length()];
                try {
                        reader.read(buffer);
                        reader.close();
                } catch (IOException e) {
                        Console.printerrln(e.getMessage());
                        return;
                }

                String content = new String(buffer).trim();

                OutputStreamWriter writer;
                try {
                        FileOutputStream fos = new FileOutputStream(target);
                        writer = new OutputStreamWriter(fos, "UTF-16");
                } catch (IOException e) {
                        Console.printerrln(e.getMessage());
                        return;
                }
                try {
                        writer.write(content);
                        if (!content.endsWith("</sessions>")) {
                                writer.write("</sessions>");
                        }
                        writer.close();
                } catch (IOException e) {
                        Console.printerrln(e.getMessage());
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#help()
         */
        @Override
        public void help() {
                Console.println("Usage: preprocessJFC <sourceFile> <targetFile>");
        }

}