/**
 * Gets a file from a URL and prints it out to the console.
 * This version uses exceptions and adds graphic feedback.
 * 
 * Copyright (C) 2012 Mithat Konar
 */

// constants
final String THE_URL = "http://www.w3.org";
final int CANVAS_BORDER=10;

// global variables
String[] lines;

void setup() {
  size(160, 90);
  smooth();
  try {
    lines = loadStrings(THE_URL);

    for (int i=0; i < lines.length; i++) {
      println(lines[i]);
    }
    println("There were " + lines.length + " lines.");

    // Turn the canvas green to show that all went well.
    background(#00cc00);
  }
  catch (Exception e) {
    // In case there is an error, print out the error to the console and
    // turn the canvas red with a big 'X' in it.
    println("Problem loading " + THE_URL);
    println(e);
    
    // Turn the canvas red with a big 'X' in it to indicate error.
    background(#ff0000);
    strokeWeight(5);
    line(CANVAS_BORDER, CANVAS_BORDER, width-CANVAS_BORDER, height-CANVAS_BORDER);
    line(CANVAS_BORDER, height-CANVAS_BORDER, width-CANVAS_BORDER, CANVAS_BORDER);
  }
  println("Exiting app.");
}