From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2006-11-22T08:45:09+09:00
Subject: Re: name conversion: search terms?


On Nov 21, 2006, at 6:54 AM, Hugh Sasse wrote:

> I'm doing some code generation and need to convert from CamelCase to
> whatever_this_is_called.  Wikipedia has a page for CamelCase but not
> underscore separated words.
>
> I'm thinking that someone must have done this already, and got the
> edge cases sorted out, so rather than coming up with a wheel with an
> iron tyre I'd search... for what?  Is there a single correct term
> for how we name methods in Ruby?
>
>         Thank you,
>         Hugh


class String

   # "FooBar".snake_case #=> "foo_bar"
   def snake_case
     return self unless self =~ %r/[A-Z]/
     self.reverse.scan(%r/[A-Z]+|[^A-Z]*[A-Z]+?/).reverse.map{|word|  
word.reverse.downcase}.join '_'
   end

   # "foo_bar".camel_case #=> "FooBar"
   def camel_case
     return self if self =~ %r/[A-Z]/ and self !~ %r/_/
     words = self.strip.split %r/\s*_+\s*/
     words.map!{|w| w.downcase.sub(%r/^./){|c| c.upcase}}
     words.join
   end

end


Cheers-
-- Ezra Zygmuntowicz 
-- Lead Rails Evangelist
-- ez@engineyard.com
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