Eclipse project migrator

Migrator.java

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;

import org.eclipse.core.internal.localstore.SafeChunkyInputStream;
import org.eclipse.core.internal.localstore.SafeChunkyOutputStream;


public class Migrator {

    /* package */static final String URI_PREFIX = "URI//"; //$NON-NLS-1$

    public static void main(String[] args) throws Exception {
        File file = new File("/<workspace root>/.metadata/.plugins/org.eclipse.core.resources/.projects/");
        File[] projects = file.listFiles();
        for (File project : projects) {
            File dotLocation = new File(project, ".location");
            if (!dotLocation.exists()) {
                continue;
            }
            System.out.println("Reading " + dotLocation);
            SafeChunkyInputStream input = new SafeChunkyInputStream(dotLocation, 500);
            DataInputStream dataIn = new DataInputStream(input);
            String location = dataIn.readUTF();
            dataIn.close();

            dotLocation.delete();
            SafeChunkyOutputStream output = new SafeChunkyOutputStream(dotLocation);
            DataOutputStream dataOut = new DataOutputStream(output);
            try {
                // here calculate proper location ;-)
                dataOut.writeUTF(URI_PREFIX + location.toString().replaceAll(URI_PREFIX, ""));
                dataOut.writeInt(0);
                output.succeed();
            } finally {
                dataOut.close();
            }
        }

    }
}