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

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
    
/**
 * 
 * @author dannocz
 */
public class InputReader {
    
    public static Input readFile(String filename){
        try {
              
              /*  Sets up a file reader to read the file passed on the command
          77        line one character at a time */
              FileReader input = new FileReader(filename);
              
              /* Filter FileReader through a Buffered read to read a line at a
                 time */
              BufferedReader bufRead = new BufferedReader(input);
              
              String line;    // String that holds current file line
              int count = 0;  // Line number of count 
              ArrayList<String> cases= new ArrayList<String>();
              
              // Read first line
              line = bufRead.readLine();
              int noTestCases=Integer.parseInt(line);
              count++;
              
              // Read through file one line at time. Print line # and line
              while (count<=noTestCases){
                  //System.out.println("Reading. "+count+": "+line);
                  line = bufRead.readLine();
                  cases.add(line);
                  count++;
              }
              
              bufRead.close();
              
              return new Input(noTestCases,cases);
              
          }catch (ArrayIndexOutOfBoundsException e){
              /* If no file was passed on the command line, this expception is
              generated. A message indicating how to the class should be
              called is displayed */
              e.printStackTrace();        
  
          }catch (IOException e){
              // If another exception is generated, print a stack trace
              e.printStackTrace();
          }
        
        return null;
          
      }// end main
    }

package de.johanneslauber.codejam;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import de.johanneslauber.codejam.model.ICase;
import de.johanneslauber.codejam.model.IProblem;

/**
 * provids the cases for a problem
 * 
 * @author Johannes Lauber - joh.lauber@googlemail.com
 * 
 */
public class CaseProvider {

	private int numberOfCases;
	private List<ICase> listOfCases;

	/**
	 * Read the file line by line and write it to a list of cases
	 * 
	 * @author Johannes Lauber - joh.lauber@googlemail.com
	 * @param fileName
	 * @throws IOException
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 */
	public void importFile(String fileName, Class caseClass)
			throws IOException, InstantiationException, IllegalAccessException {

		BufferedReader reader = new BufferedReader(new InputStreamReader(
				new DataInputStream(new FileInputStream(fileName))));

		// Read File Line By Line
		String stringLine = reader.readLine();
		setNumberOfCases(Integer.valueOf(stringLine));

		List<ICase> listOfCases = new ArrayList<ICase>();
		ICase currentCase = createEmptyCase(caseClass);

		int i = 1;
		while ((stringLine = reader.readLine()) != null) {

			if (i <= currentCase.getNumberOfAttributes()) {
				currentCase.setLine(i, stringLine);
				i++;
			} else {
				listOfCases.add(currentCase);
				currentCase = createEmptyCase(caseClass);
				i = 1;
				currentCase.setLine(i, stringLine);
				i++;
			}
		}
		// don't forget to add the last case
		listOfCases.add(currentCase);

		reader.close();

		this.listOfCases = listOfCases;
	}

	/**
	 * 
	 * @author Johannes Lauber - joh.lauber@googlemail.com
	 * @param caseClass
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 */
	private ICase createEmptyCase(Class<ICase> caseClass)
			throws InstantiationException, IllegalAccessException {
		ICase currentCase = caseClass.newInstance();
		return currentCase;
	}

	/**
	 * 
	 * @author Johannes Lauber - joh.lauber@googlemail.com
	 * @param forName
	 */
	public void solveCases(Class<?> forName) {

		try {
			IProblem problem = (IProblem) forName.newInstance();
			problem.setListOfCases(listOfCases);
			problem.solveCases();
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	// Setter & Getter
	public int getNumberOfCases() {
		return numberOfCases;
	}

	public void setNumberOfCases(int numberOfCases) {
		this.numberOfCases = numberOfCases;
	}

	public List<ICase> getListOfCases() {
		return listOfCases;
	}

	public void setListOfCases(List<ICase> listOfCases) {
		this.listOfCases = listOfCases;
	}

}
