From: Harry Ohlsen <harryo@...>
Date: 2001-12-12T08:03:47+09:00
Subject: [ruby-talk:28286] Re: rdefs : a puny doc tool

In article <60D4BD663C99D311A83D00805FA65D24271F14@IDMC>, "Issac Trotts"
<ITrotts@idolminds.com> wrote:

> # print out a brief summary of a ruby file.
> 
> while gets
>     print if /(def|class|module)/
> end
> 

Very simple and useful!

I got a warning, though, saying it was using a constant Regexp in a test.

Here's a slightly modified version, that fixes that, gives me less false positives
(by only matching those keywords after any whitespace at the start of a
line) and also reads from a file given on the command line, if provided:


#!/usr/bin/env ruby
 
if ARGV.length > 0
    $stdin = File.new(ARGV[0])
end
 
while gets
    print if $_ =~ /^\s*(def|class|module)/
end