/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package filecompare;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Deinum
 */
public class FileCompare {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
            FileCompare compCore = new FileCompare();
        long start = System.currentTimeMillis();

        List<Integer> templist = compCore.searchDuplicates(new File(
                "d:\\doppelte\\BVA.PG4.0913_doppelte"));

        for (Integer i : templist) {

            System.out.println("Doppelte Zeile: " + i);
        }

        long ende = System.currentTimeMillis();
        System.out.println(ende - start + " ms dauerte es");

    }

    public List<Integer> searchDuplicates(File importFile) throws IOException {

        FileReader fread = new FileReader(importFile);

        BufferedReader read = new BufferedReader(fread);

        String currentSearch = null;

        int currentLine = 1;

        List<Integer> listofLines = new ArrayList<Integer>();

        while (read.ready()) {

            currentSearch = read.readLine();

            listofLines.addAll(getLinesofOccurrence(currentSearch, importFile,
                    currentLine));

            currentLine++;

            System.out.println("Zeile: " + currentLine);

        }

        return listofLines;
    }


    private List<Integer> getLinesofOccurrence(String searchedLine,
            File importFile, int lineIgnored) throws IOException {

        FileReader fread = new FileReader(importFile);
        BufferedReader read = new BufferedReader(fread);

        List<Integer> listofLines = new ArrayList<Integer>();

        int currentLine = 1;

        while (read.ready()) {

            if (read.readLine().matches(searchedLine)
                    & currentLine != lineIgnored) {

                listofLines.add(currentLine);

            }

            currentLine++;

        }

        return listofLines;

    }


}