initial cool.io support

Cool.io is the new name for Rev.  We'll continue to support Rev
until Cool.io breaks backwards compatibility.  Rev may not be
supported if Cool.io is.

1 files changed, 8 insertions, 2 deletions

diff --git a/lib/rainbows/rev.rb b/lib/rainbows/rev.rb
index 6ddb130..cb4701b 100644
--- a/lib/rainbows/rev.rb
+++ b/lib/rainbows/rev.rb
@@ -1,6 +1,12 @@
 # -*- encoding: binary -*-
-require 'rev'
-Rev::VERSION >= '0.3.0' or abort 'rev >= 0.3.0 is required'
+begin
+  require 'coolio'
+  Coolio::VERSION >= '1.0.0' or abort 'cool.io >= 1.0.0 is required'
+rescue LoadError
+  require 'rev'
+  Rev::VERSION >= '0.3.0' or abort 'rev >= 0.3.0 is required'
+end
+require 'rev' if defined?(Coolio)
 
 # Implements a basic single-threaded event model with
 # {Rev}[http://rev.rubyforge.org/].  It is capable of handling