From: Francis Hwang <sera@...>
Date: 2005-11-02T14:42:09+09:00
Subject: Re: urirequire: I got yer Web 2.0 right here

Cool! Thanks so much for this. I'll definitely fold this into the next
release.

Daniel Sheppard wrote:
> This'll make uri_require a nice safe place to live.... sort of.
>
> require 'open-uri'
>
> module UriRequire
> 	Version = '0.1.1'
>
> 	@@orig_require = Kernel.method :require
>
> 	def self.orig_require; @@orig_require; end
> end
>
> def require( library_name )
> 	if library_name =~ /^(http|https|ftp):\/\//
> 	    uri_require( library_name )
> 	else
>           UriRequire.orig_require.call library_name
> 	end
> end
>
> def uri_require( library_name, expected_digest )
> 	begin
> 		contents = open( library_name ) do |f| f.gets( nil );
> end
> 	rescue OpenURI::HTTPError
> 		library_name += '.rb'
> 		contents = open( library_name ) do |f| f.gets( nil );
> end
> 	end
> 	require 'digest/sha1'
> 	digest = Digest::SHA1.hexdigest('xx')
> 	if expected_digest
> 	   raise "Wrong Hash - Expected '#{expected_digest}', recieved
> '#{digest}'"
> 	else
> 	   warn "Requiring a uri without a hash? Are you freakin'
> crazy?"
> 	   warn "The hash is '#{digest}' for '#{library_name}'"
> 	end
> 	eval contents
> end
>
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