1 files changed, 50 insertions, 0 deletions
diff --git a/lib/puppet/interface/interface_collection.rb b/lib/puppet/interface/interface_collection.rb
new file mode 100644
index 000000000..47ed702aa
--- /dev/null
+++ b/lib/puppet/interface/interface_collection.rb
@@ -0,0 +1,50 @@
+require 'puppet/interface'
+
+module Puppet::Interface::InterfaceCollection
+  @interfaces = {}
+
+  def self.interfaces
+    unless @loaded
+      @loaded = true
+      $LOAD_PATH.each do |dir|
+        next unless FileTest.directory?(dir)
+        Dir.chdir(dir) do
+          Dir.glob("puppet/interface/*.rb").collect { |f| f.sub(/\.rb/, '') }.each do |file|
+            iname = file.sub(/\.rb/, '')
+            begin
+              require iname
+            rescue Exception => detail
+              puts detail.backtrace if Puppet[:trace]
+              raise "Could not load #{iname} from #{dir}/#{file}: #{detail}"
+            end
+          end
+        end
+      end
+    end
+    return @interfaces.keys
+  end
+
+  def self.[](name)
+    @interfaces[underscorize(name)] if interface?(name)
+  end
+
+  def self.interface?(name)
+    name = underscorize(name)
+    require "puppet/interface/#{name}" unless @interfaces.has_key? name
+    return @interfaces.has_key? name
+  rescue LoadError
+    return false
+  end
+
+  def self.register(interface)
+    @interfaces[underscorize(interface.name)] = interface
+  end
+
+  def self.underscorize(name)
+    unless name.to_s =~ /^[-_a-z]+$/i then
+      raise ArgumentError, "#{name.inspect} (#{name.class}) is not a valid interface name"
+    end
+
+    name.to_s.downcase.split(/[-_]/).join('_').to_sym
+  end
+end