2 files changed, 36 insertions, 0 deletions
diff --git a/lib/puppet/file_collection.rb b/lib/puppet/file_collection.rb
new file mode 100644
index 000000000..451b496a1
--- /dev/null
+++ b/lib/puppet/file_collection.rb
@@ -0,0 +1,20 @@
+# A simple way to turn file names into singletons,
+# so we don't have tons of copies of each file path around.
+class Puppet::FileCollection
+    def initialize
+        @paths = []
+    end
+
+    def index(path)
+        if @paths.include?(path)
+            return @paths.index(path)
+        else
+            @paths << path
+            return @paths.length - 1
+        end
+    end
+
+    def path(index)
+        @paths[index]
+    end
+end
diff --git a/lib/puppet/file_collection/lookup.rb b/lib/puppet/file_collection/lookup.rb
new file mode 100644
index 000000000..8f69c6681
--- /dev/null
+++ b/lib/puppet/file_collection/lookup.rb
@@ -0,0 +1,16 @@
+require 'puppet/file_collection'
+
+# A simple module for looking up file paths and indexes
+# in a file collection.
+module Puppet::FileCollection::Lookup
+    attr_accessor :line, :file_index
+
+    def file=(path)
+        @file_index = file_collection.index(path)
+    end
+
+    def file
+        return nil unless file_index
+        file_collection.path(file_index)
+    end
+end