40ecf58d4b
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.)
45 lines
867 B
Haskell
45 lines
867 B
Haskell
{- Interface to libmagic
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-
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- Copyright 2019 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE CPP #-}
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module Annex.Magic (
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Magic,
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MimeType,
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initMagicMimeType,
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getMagicMimeType,
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) where
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#ifdef WITH_MAGICMIME
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import Magic
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import Utility.Env
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import Common
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#else
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type Magic = ()
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#endif
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initMagicMimeType :: IO (Maybe Magic)
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#ifdef WITH_MAGICMIME
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initMagicMimeType = catchMaybeIO $ do
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m <- magicOpen [MagicMimeType]
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liftIO $ getEnv "GIT_ANNEX_DIR" >>= \case
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Nothing -> magicLoadDefault m
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Just d -> magicLoad m
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(d </> "magic" </> "magic.mgc")
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return m
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#else
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initMagicMimeType = return Nothing
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#endif
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type MimeType = String
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getMagicMimeType :: Magic -> FilePath -> IO (Maybe MimeType)
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#ifdef WITH_MAGICMIME
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getMagicMimeType m f = Just <$> magicFile m f
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#else
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getMagicMimeType _ _ = return Nothing
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#endif
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