From b9efc54e931bae76a3a2255bc07249210f2abc62 Mon Sep 17 00:00:00 2001
From: Jasper Van der Jeugt <jaspervdj@gmail.com>
Date: Mon, 11 Apr 2011 18:10:45 +0200
Subject: Set and check identifier groups

---
 src/Hakyll/Core/Identifier.hs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/Hakyll/Core/Identifier.hs b/src/Hakyll/Core/Identifier.hs
index 5b205f1..1cb625f 100644
--- a/src/Hakyll/Core/Identifier.hs
+++ b/src/Hakyll/Core/Identifier.hs
@@ -25,6 +25,8 @@ module Hakyll.Core.Identifier
     ( Identifier (..)
     , parseIdentifier
     , toFilePath
+    , setGroup
+    , hasGroup
     ) where
 
 import Control.Arrow (second)
@@ -73,3 +75,13 @@ parseIdentifier = Identifier Nothing
 --
 toFilePath :: Identifier -> FilePath
 toFilePath = identifierPath
+
+-- | Set the identifier group for some identifier
+--
+setGroup :: String -> Identifier -> Identifier
+setGroup g (Identifier _ p) = Identifier (Just g) p
+
+-- | Check if an identifier belongs to a certain group
+--
+hasGroup :: String -> Identifier -> Bool
+hasGroup g (Identifier g' _) = Just g == g'
-- 
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