git-annex/Annex/MetaData/StandardFields.hs
Joey Hess 40ecf58d4b
update licenses from GPL to AGPL
This does not change the overall license of the git-annex program, which
was already AGPL due to a number of sources files being AGPL already.

Legally speaking, I'm adding a new license under which these files are
now available; I already released their current contents under the GPL
license. Now they're dual licensed GPL and AGPL. However, I intend
for all my future changes to these files to only be released under the
AGPL license, and I won't be tracking the dual licensing status, so I'm
simply changing the license statement to say it's AGPL.

(In some cases, others wrote parts of the code of a file and released it
under the GPL; but in all cases I have contributed a significant portion
of the code in each file and it's that code that is getting the AGPL
license; the GPL license of other contributors allows combining with
AGPL code.)
2019-03-13 15:48:14 -04:00

63 lines
1.4 KiB
Haskell

{- git-annex metadata, standard fields
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE OverloadedStrings #-}
module Annex.MetaData.StandardFields (
tagMetaField,
yearMetaField,
monthMetaField,
dayMetaField,
isDateMetaField,
lastChangedField,
mkLastChangedField,
isLastChangedField
) where
import Types.MetaData
import qualified Data.Text as T
import Data.Monoid
import Prelude
tagMetaField :: MetaField
tagMetaField = mkMetaFieldUnchecked "tag"
yearMetaField :: MetaField
yearMetaField = mkMetaFieldUnchecked "year"
monthMetaField :: MetaField
monthMetaField = mkMetaFieldUnchecked "month"
dayMetaField :: MetaField
dayMetaField = mkMetaFieldUnchecked "day"
isDateMetaField :: MetaField -> Bool
isDateMetaField f
| f == yearMetaField = True
| f == monthMetaField = True
| f == dayMetaField = True
| otherwise = False
lastChangedField :: MetaField
lastChangedField = mkMetaFieldUnchecked lastchanged
mkLastChangedField :: MetaField -> MetaField
mkLastChangedField f = mkMetaFieldUnchecked (fromMetaField f <> lastchangedSuffix)
isLastChangedField :: MetaField -> Bool
isLastChangedField f
| f == lastChangedField = True
| otherwise = lastchanged `T.isSuffixOf` s && s /= lastchangedSuffix
where
s = fromMetaField f
lastchanged :: T.Text
lastchanged = "lastchanged"
lastchangedSuffix :: T.Text
lastchangedSuffix = "-lastchanged"