package net.sf.statsvn.util;

 import java.io.IOException;

 import java.util.Vector;

 /**

  * Performs svn diff queries. 

  * @author jkealey

  *

  */

 public interface ISvnDiffProcessor {

     /**

      * Returns line count differences between two revisions of a file.

      * 

      * @param oldRevNr

      *            old revision number

      * @param newRevNr

      *            new revision number

      * @param filename

      *            the filename

      * @return A int[2] array of [lines added, lines removed] is returned.

      * @throws IOException

      *             problem parsing the stream

      * @throws BinaryDiffException

      *             if the error message is due to trying to diff binary files.

      */

     public abstract int[] getLineDiff(final String oldRevNr, final String newRevNr, final String filename) throws IOException, BinaryDiffException;

     /**

     * Returns line count differences for all files in a particular revision.

     * 

     * @param newRevNr

     *            new revision number

     * @return A vector of object[3] array of [filename, int[2](lines added, lines removed), isBinary] is returned.

     * @throws IOException

     *             problem parsing the stream

     * @throws BinaryDiffException

     *             if the error message is due to trying to diff binary files.

     */

     public abstract Vector getLineDiff(final String newRevNr) throws IOException, BinaryDiffException;

 }