package com.macfaq.io;

import java.io.*;

public class SafeBufferedReader extends BufferedReader {

  public SafeBufferedReader(Reader in) {
    this(in, 1024);
  }

  public SafeBufferedReader(Reader in, int bufferSize) {
    super(in, bufferSize);
  }

  private boolean lookingForLineFeed = false;
  
  public String readLine() throws IOException {
    StringBuffer sb = new StringBuffer("");
    while (true) {
      int c = this.read();
      if (c == -1) { // end of stream
        if (sb.equals("")) return null;
        return sb.toString();
      }
      else if (c == '\n') {
        if (lookingForLineFeed) {
          lookingForLineFeed = false;
          continue;
        }
        else {
          return sb.toString();
        }
      }
      else if (c == '\r') {
        lookingForLineFeed = true;
        return sb.toString();
      }
      else {
        lookingForLineFeed = false;
        sb.append((char) c);
      }
    }
  }

}