Title Case Ports
Background
These are ports of John Gruber's Title Case Perl script to Ruby, JavaScript, and Objective-C. All are released under the same license as the original code. If you make any improvements, please e-mail me — my user name on this domain is "marshall" — so that I can link to them (or host them if you need).
Title Case for Ruby
This is a direct port of the Perl code to Ruby. It reads lines from standard input and writes them to standard output. I deliberately tried to keep it as close to the original code as possible, but it could certainly be adapted to a String class extension.
Title Case for JavaScript
This adds a toTitleCase() method to all String objects
that returns the title-cased version of the string. The title-case method can
be used by itself as well, so you can use it with
Prototype
for iterating through collections of strings. For example:
// As a String method:
var title = line.toTitleCase();
// Using the Prototype each() method:
var titles = lines.each(TitleCase.toTitleCase);
Title Case for Objective-C
This is an Objective-C category that adds a titlecaseString
method to all NSString objects. It includes a small program
that tests each of the
edge cases.
The algorithm for this version is a wide departure from the original,
due to the lack of regular expression support in Cocoa.
NSPredicate can be used to test strings, but (as far as I can
tell) it doesn't do replacement of grouped matches. There are third-party
libraries that add regular expression matching to NSString,
but I wanted to keep the requirements for this as low as possible — it
might be useful in an iPhone app — and I figured it wouldn't hurt to
better familiarize myself with NSScanner and
NSCharacterSet.