extensions.rb in utopia-0.9.27

- old
+ new

@@ -1,19 +1,8 @@
-# Copyright (c) 2010 Samuel Williams. Released under the GNU GPLv3.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-# 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#	This file is part of the "Utopia Framework" project, and is licensed under the GNU AGPLv3.
+#	Copyright 2010 Samuel Williams. All rights reserved.
+#	See <utopia.rb> for licensing details.
 
 require 'active_support'
 
 class Date
 	alias_method :old_cmp, :<=>
@@ -26,9 +15,23 @@
 			return (other <=> self) * -1
 		else
 			old_cmp(other)
 		end
 	end	
+end
+
+class Regexp
+	def self.starts_with(string)
+		return /^#{Regexp.escape(string)}/
+	end
+
+	def self.ends_with(string)
+		return /#{Regexp.escape(string)}$/
+	end
+
+	def self.contains(string)
+		return Regexp.new(string)
+	end
 end
 
 class String
 	HTML_ESCAPE = {"&" => "&amp;", "<" => "&lt;", ">" => "&gt;", "\"" => "&quot;"}
 	HTML_ESCAPE_PATTERN = Regexp.new("[" + Regexp.quote(HTML_ESCAPE.keys.join) + "]")