gistfile1.js

// A javascript port of my Perl string capitaliser. Possibly someone who is better at
// DOM scripting than me could make a script that would automatically apply this to any
// element styled with text-transform: uppercase.
// Again, the algorithm is too simple to be worth insisting on attribution, but if you
// do use this script anywhere, please attribute it to me in a comment block somewhere.
// By David Kendal, http://dpk.org.uk/
// see also the original perl version at http://gist.github.com/567255

function is_exception (word, exceptions) { // possibly there's a routine built-in to JavaScript to do this
  word = word.toLowerCase();
  for (var i in exceptions) {
    exception = exceptions[i].toLowerCase();
    if (exception == word) {
      return true;
    }
  }
  return false;
}

function uppercase (text) {
  exceptions = ["macbook", "wifi", "airport", "postscript"]; // if you have any more suggestions, mail them to me at the address ona http://dpk.org.uk/contact/
  words = text.split(/\b/);
  capitalised = "";
  for (var i in words) {
    word = words[i];
    if (matches = word.match(/^(.{0,4})([A-Z].*)$/)) { // sadly javascript doesn't do POSIX character classes.
      if (is_exception(word, exceptions)) {
        matches[1] = matches[1].toUpperCase();
      }
      capitalised = capitalised + matches[1] + matches[2].toUpperCase();
    } else {
      capitalised = capitalised + word.toUpperCase();
    }
  }
  return capitalised;
}

document.write(uppercase('I really love connecting my iPod to my MacBook and syncing with iTunes.'));