X-Git-Url: http://git.cielonegro.org/gitweb.cgi?p=time-http.git;a=blobdiff_plain;f=Data%2FTime%2FRFC822.hs;h=b246e696cbc7589a7e524517664690a548b1fa2f;hp=df6527cb2372fc38ce0c20e82d506dbece32f28b;hb=0b73811;hpb=dac3f355097e647637a52dfa8dad43bbc5d589fa diff --git a/Data/Time/RFC822.hs b/Data/Time/RFC822.hs index df6527c..b246e69 100644 --- a/Data/Time/RFC822.hs +++ b/Data/Time/RFC822.hs @@ -1,10 +1,3 @@ -{-# LANGUAGE - FlexibleInstances - , MultiParamTypeClasses - , OverloadedStrings - , TemplateHaskell - , UnicodeSyntax - #-} -- |This module provides functions to parse and format RFC 822 date -- and time formats. -- @@ -37,143 +30,6 @@ module Data.Time.RFC822 ( RFC822 , rfc822DateAndTime - , rfc822Time ) where -import Control.Applicative -import Data.Ascii (Ascii, AsciiBuilder) -import qualified Data.Ascii as A -import Data.Attoparsec.Char8 -import Data.Convertible.Base -import Data.Monoid.Unicode -import Data.Tagged -import Data.Time -import Data.Time.Calendar.WeekDate -import Data.Time.HTTP.Common -import Prelude.Unicode - --- |FIXME: docs -data RFC822 - -instance ConvertSuccess ZonedTime (Tagged RFC822 Ascii) where - {-# INLINE convertSuccess #-} - convertSuccess = (A.fromAsciiBuilder <$>) ∘ cs - -instance ConvertSuccess ZonedTime (Tagged RFC822 AsciiBuilder) where - {-# INLINE convertSuccess #-} - convertSuccess = Tagged ∘ toAsciiBuilder - --- |FIXME: move this to RFC822.Internal -instance ConvertSuccess TimeZone (Tagged RFC822 Ascii) where - {-# INLINE convertSuccess #-} - convertSuccess = (A.fromAsciiBuilder <$>) ∘ cs - --- |FIXME: move this to RFC822.Internal -instance ConvertSuccess TimeZone (Tagged RFC822 AsciiBuilder) where - {-# INLINE convertSuccess #-} - convertSuccess tz - | timeZoneMinutes tz ≡ 0 = Tagged $ A.toAsciiBuilder "GMT" - | otherwise = Tagged $ show4digitsTZ tz - -instance ConvertAttempt (Tagged RFC822 Ascii) ZonedTime where - {-# INLINE convertAttempt #-} - convertAttempt = parseAttempt' rfc822DateAndTime ∘ untag - --- |Parse an RFC 822 date and time string. -rfc822DateAndTime ∷ Parser ZonedTime -rfc822DateAndTime = dateTime - -dateTime ∷ Parser ZonedTime -dateTime = do weekDay ← optionMaybe $ - do w ← shortWeekDayNameP - _ ← string ", " - return w - gregDay ← date - case weekDay of - Nothing - -> return () - Just givenWD - -> assertWeekDayIsGood givenWD gregDay - (tod, timeZone) ← rfc822Time - let lt = LocalTime gregDay tod - zt = ZonedTime lt timeZone - return zt - -date ∷ Parser Day -date = do day ← read2 - _ ← char ' ' - month ← shortMonthNameP - _ ← char ' ' - year ← (+ 1900) <$> read2 - _ ← char ' ' - assertGregorianDateIsGood year month day - --- |FIXME: move this to RFC822.Internal -rfc822Time ∷ Parser (TimeOfDay, TimeZone) -rfc822Time = do tod ← hms - _ ← char ' ' - tz ← zone - return (tod, tz) - -hms ∷ Parser TimeOfDay -hms = do hour ← read2 - minute ← char ':' *> read2 - second ← option 0 (char ':' *> read2) - assertTimeOfDayIsGood hour minute second - -zone ∷ Parser TimeZone -zone = choice [ string "UT" *> return (TimeZone 0 False "UT" ) - , string "GMT" *> return (TimeZone 0 False "GMT") - , char 'E' - *> choice [ string "ST" *> return (TimeZone ((-5) * 60) False "EST") - , string "DT" *> return (TimeZone ((-4) * 60) True "EDT") - ] - , char 'C' - *> choice [ string "ST" *> return (TimeZone ((-6) * 60) False "CST") - , string "DT" *> return (TimeZone ((-5) * 60) True "CDT") - ] - , char 'M' - *> choice [ string "ST" *> return (TimeZone ((-7) * 60) False "MST") - , string "DT" *> return (TimeZone ((-6) * 60) True "MDT") - , return (TimeZone ((-12) * 60) False "M") - ] - , char 'P' - *> choice [ string "ST" *> return (TimeZone ((-8) * 60) False "PST") - , string "DT" *> return (TimeZone ((-7) * 60) True "PDT") - ] - , char 'Z' *> return (TimeZone 0 False "Z") - , char 'A' *> return (TimeZone ((-1) * 60) False "A") - , char 'N' *> return (TimeZone ( 1 * 60) False "N") - , char 'Y' *> return (TimeZone ( 12 * 60) False "Y") - , read4digitsTZ - ] - -toAsciiBuilder ∷ ZonedTime → AsciiBuilder -toAsciiBuilder zonedTime - = let localTime = zonedTimeToLocalTime zonedTime - timeZone = zonedTimeZone zonedTime - (year, month, day) = toGregorian (localDay localTime) - (_, _, week) = toWeekDate (localDay localTime) - timeOfDay = localTimeOfDay localTime - in - shortWeekDayName week - ⊕ A.toAsciiBuilder ", " - ⊕ show2 day - ⊕ A.toAsciiBuilder " " - ⊕ shortMonthName month - ⊕ A.toAsciiBuilder " " - ⊕ show2 (year `mod` 100) - ⊕ A.toAsciiBuilder " " - ⊕ show2 (todHour timeOfDay) - ⊕ A.toAsciiBuilder ":" - ⊕ show2 (todMin timeOfDay) - ⊕ A.toAsciiBuilder ":" - ⊕ show2 (floor (todSec timeOfDay) ∷ Int) - ⊕ A.toAsciiBuilder " " - ⊕ untag (cs timeZone ∷ Tagged RFC822 AsciiBuilder) - -deriveAttempts [ ([t| ZonedTime |], [t| Tagged RFC822 Ascii |]) - , ([t| ZonedTime |], [t| Tagged RFC822 AsciiBuilder |]) - , ([t| TimeZone |], [t| Tagged RFC822 Ascii |]) - , ([t| TimeZone |], [t| Tagged RFC822 AsciiBuilder |]) - ] +import Data.Time.RFC822.Internal