/*
 * HandleFile.java
 *
 * Created on January 30, 2006, 11:38 PM
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package redmondfile;

import java.io.File;
import java.io.*;

/**
 *
 * @author Mike
 */
public class HandleFile {
    
    /** Creates a new instance of HandleFile */
    public HandleFile() {
    }
    
    
    /** 
     * get started with a file - including choosing it using the FileChooser,
     * making sure we can read from it
     */
    public static BufferedReader startFile (String filename) throws IOException {
        //////////////////////////////
        // set up for reading file
        //////////////////////////////
        File filehandle = new File(filename);
        boolean there = filehandle.exists();
        FileReader fReader;
        BufferedReader bReader;
        String line;
        if (there) {
            // if file exists, read the file
            if (filehandle.canRead() ) {
                // try to read it
                    fReader = new FileReader(filehandle);
                    bReader = new BufferedReader(fReader);
            }
            else {
                throw new IOException(); // signal that we are unable to handle the file
            }
        }
        else {
            throw new IOException(); // signal that we are unable to handle the file
        }
        return bReader;
    }
    

    /** 
     * call this one the first time when file setup is needed
     */
    public static PrintWriter prepWriteToFile(String filename) throws IOException {
        File outf = new File(filename);
        FileWriter outfw = null;
        try {
            outfw = new FileWriter(outf);
        }
        catch (IOException ioex) {
            System.out.println("exception - cannot write results" + ioex);
            throw ioex; // have caller deal with it
        }
        BufferedWriter outbw = new BufferedWriter(outfw);
        PrintWriter outpw = new PrintWriter(outbw); 
        return outpw;
    }
    

    
}