X-Git-Url: http://git.cielonegro.org/gitweb.cgi?p=time-http.git;a=blobdiff_plain;f=Data%2FTime%2FHTTP%2FCommon.hs;h=bb4ac16527c0ac6768eb22c097fbd46a97f355a1;hp=6a45805ed80be61aa996c7351554b7f82689b9d5;hb=512f9a8;hpb=d39ace5728c981d8c9d83fe8eefcd811dbb1e8aa

diff --git a/Data/Time/HTTP/Common.hs b/Data/Time/HTTP/Common.hs
index 6a45805..bb4ac16 100644
--- a/Data/Time/HTTP/Common.hs
+++ b/Data/Time/HTTP/Common.hs
@@ -27,13 +27,14 @@ module Data.Time.HTTP.Common
     , assertWeekDayIsGood
     , assertGregorianDateIsGood
     , assertTimeOfDayIsGood
+
+    , optionMaybe
     )
     where
 import Blaze.ByteString.Builder.ByteString as B
 import Blaze.Text.Int as BT
 import Control.Applicative
 import Control.Monad
-import Control.Monad.Unicode
 import Data.Ascii (AsciiBuilder)
 import qualified Data.Ascii as A
 import Data.Attoparsec.Char8 as P
@@ -57,17 +58,17 @@ shortWeekDayName n = error ("shortWeekDayName: invalid week day: " ⧺ show n)
 shortWeekDayNameP ∷ Num n ⇒ Parser n
 {-# INLINEABLE shortWeekDayNameP #-}
 shortWeekDayNameP
-    = choice [ string "Mon" ≫ return 1
+    = choice [ string "Mon" *> return 1
              , char 'T'
-               ≫ choice [ string "ue" ≫ return 2
-                        , string "hu" ≫ return 4
-                        ]
-             , string "Wed" ≫ return 3
-             , string "Fri" ≫ return 5
+               *> choice [ string "ue" *> return 2
+                         , string "hu" *> return 4
+                         ]
+             , string "Wed" *> return 3
+             , string "Fri" *> return 5
              , char 'S'
-               ≫ choice [ string "at" ≫ return 6
-                        , string "un" ≫ return 7
-                        ]
+               *> choice [ string "at" *> return 6
+                         , string "un" *> return 7
+                         ]
              ]
 
 longWeekDayName ∷ Num n ⇒ n → String
@@ -84,17 +85,17 @@ longWeekDayName n = error ("longWeekDayName: invalid week day: " ⧺ show n)
 longWeekDayNameP ∷ Num n ⇒ Parser n
 {-# INLINEABLE longWeekDayNameP #-}
 longWeekDayNameP
-    = choice [ string "Monday" ≫ return 1
+    = choice [ string "Monday" *> return 1
              , char 'T'
-               ≫ choice [ string "uesday"  ≫ return 2
-                        , string "hursday" ≫ return 4
-                        ]
-             , string "Wednesday" ≫ return 3
-             , string "Friday"    ≫ return 5
+               *> choice [ string "uesday"  *> return 2
+                         , string "hursday" *> return 4
+                         ]
+             , string "Wednesday" *> return 3
+             , string "Friday"    *> return 5
              , char 'S'
-               ≫ choice [ string "aturday" ≫ return 6
-                        , string "unday"   ≫ return 7
-                        ]
+               *> choice [ string "aturday" *> return 6
+                         , string "unday"   *> return 7
+                         ]
              ]
 
 shortMonthName ∷ Num n ⇒ n → String
@@ -117,25 +118,25 @@ shortMonthNameP ∷ Num n ⇒ Parser n
 {-# INLINEABLE shortMonthNameP #-}
 shortMonthNameP
     = choice [ char 'J'
-               ≫ choice [ string "an" ≫ return 1
-                        , char 'u'
-                          ≫ choice [ char 'n' ≫ return 6
-                                   , char 'l' ≫ return 7
-                                   ]
-                        ]
-             , string "Feb" ≫ return 2
+               *> choice [ string "an" *> return 1
+                         , char 'u'
+                           *> choice [ char 'n' *> return 6
+                                     , char 'l' *> return 7
+                                     ]
+                         ]
+             , string "Feb" *> return 2
              , string "Ma"
-               ≫ choice [ char 'r' ≫ return 3
-                        , char 'y' ≫ return 5
-                        ]
+               *> choice [ char 'r' *> return 3
+                         , char 'y' *> return 5
+                         ]
              , char 'A'
-               ≫ choice [ string "pr" ≫ return 4
-                        , string "ug" ≫ return 8
-                        ]
-             , string "Sep" ≫ return 9
-             , string "Oct" ≫ return 10
-             , string "Nov" ≫ return 11
-             , string "Dec" ≫ return 12
+               *> choice [ string "pr" *> return 4
+                         , string "ug" *> return 8
+                         ]
+             , string "Sep" *> return 9
+             , string "Oct" *> return 10
+             , string "Nov" *> return 11
+             , string "Dec" *> return 12
              ]
 
 longMonthName ∷ Num n ⇒ n → String
@@ -158,25 +159,25 @@ longMonthNameP ∷ Num n ⇒ Parser n
 {-# INLINEABLE longMonthNameP #-}
 longMonthNameP
     = choice [ char 'J'
-               ≫ choice [ string "anuary" ≫ return 1
-                        , char 'u'
-                          ≫ choice [ string "ne" ≫ return 6
-                                   , string "ly" ≫ return 7
-                                   ]
-                        ]
-             , string "February" ≫ return 2
+               *> choice [ string "anuary" *> return 1
+                         , char 'u'
+                           *> choice [ string "ne" *> return 6
+                                     , string "ly" *> return 7
+                                     ]
+                         ]
+             , string "February" *> return 2
              , string "Ma"
-               ≫ choice [ string "rch" ≫ return 3
-                        , char 'y' ≫ return 5
-                        ]
+               *> choice [ string "rch" *> return 3
+                         , char 'y' *> return 5
+                         ]
              , char 'A'
-               ≫ choice [ string "pril" ≫ return 4
-                        , string "ugust" ≫ return 8
-                        ]
-             , string "September" ≫ return 9
-             , string "October"   ≫ return 10
-             , string "November"  ≫ return 11
-             , string "December"  ≫ return 12
+               *> choice [ string "pril" *> return 4
+                         , string "ugust" *> return 8
+                         ]
+             , string "September" *> return 9
+             , string "October"   *> return 10
+             , string "November"  *> return 11
+             , string "December"  *> return 12
              ]
 
 show4 ∷ Integral i ⇒ i → AsciiBuilder
@@ -242,9 +243,9 @@ show4digitsTZ tz
 
 read4digitsTZ ∷ Parser TimeZone
 read4digitsTZ
-    = do sign   ← (char '+' ≫ return 1)
+    = do sign   ← (char '+' *> return 1)
                   <|>
-                  (char '-' ≫ return (-1))
+                  (char '-' *> return (-1))
          hour   ← read2
          minute ← read2
          let tz = TimeZone {
@@ -303,3 +304,8 @@ assertTimeOfDayIsGood hour minute second
                             ]
         Just tod
             → return tod
+
+optionMaybe ∷ Alternative f ⇒ f a → f (Maybe a)
+{-# INLINE optionMaybe #-}
+optionMaybe p
+    = option Nothing (Just <$> p)