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{-
Copyright (C) 2022 Yuchen Pei.
This file is part of fsd.
fsd is free software: you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
fsd is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
Public License for more details.
You should have received a copy of the GNU Affero General Public
License along with fsd. If not, see <https://www.gnu.org/licenses/>.
-}
{-# LANGUAGE ImportQualifiedPost #-}
{-# LANGUAGE OverloadedStrings #-}
module FSD.Copyright where
import FSD.Control
import Data.Map hiding (filter)
import Data.Maybe
import Data.Text (Text)
import Data.Text qualified as T
import Debian.Control
import Text.Regex.TDFA
import FSD.Types
parseCopyright :: Text -> Control -> Maybe (Upstream, Copyright)
parseCopyright package control =
case unControl control of
[] -> Nothing
header : rest ->
-- no parse if header is wrong
if fromMaybe "" (firstFieldName header) /= "Format"
then Nothing
else
Just
( getUpstream package header,
Copyright package (getLicenses (header : files) licenses)
)
where
files = filter (\para ->
fromMaybe "" (firstFieldName para) == "Files") rest
licenses = filter
(\para ->
fromMaybe "" (firstFieldName para) == "License") rest
getUpstream :: Text -> Paragraph -> Upstream
getUpstream package para =
Upstream package uName contacts (SourceUrls source)
where
uName = T.pack <$> fieldValue "Upstream-Name" para
contacts = case fieldValue "Upstream-Contact" para of
Just contact -> parseContacts $ lbListFV contact
Nothing -> []
source = case fieldValue "Source" para of
Just source -> parseSource $ multilineFV source
Nothing -> []
parseContacts :: [Text] -> [Contact]
parseContacts = catMaybes . fmap parseContact
parseContact :: Text -> Maybe Contact
parseContact raw =
case T.unpack raw =~ ("^(.*)<(.*@.*)>$" :: String) :: [[String]] of
[[_, "", email]] -> Just $ Contact Nothing (T.pack email)
[[_, name, email]] ->
Just $
Contact
(Just $ T.strip $ T.pack name)
(T.pack email)
_ -> Nothing
parseSource :: Text -> [Text]
parseSource = fmap T.strip . T.splitOn "\n"
getLicenses :: [Paragraph] -> [Paragraph] -> [LicenseInfo]
getLicenses paras licenses =
catMaybes $ getLicense (getLicenseMap licenses) <$> paras
getLicense :: Map Text Text -> Paragraph -> Maybe LicenseInfo
getLicense licMap para = case fSynFV <$> fieldValue "License" para of
Just ("", _) -> Nothing
Nothing -> Nothing
Just (name, desc) ->
Just $
LicenseInfo
(multilineFV <$> fieldValue "Copyright" para)
name
(if T.null desc then Data.Map.lookup name licMap else Just desc)
getLicenseMap :: [Paragraph] -> Map Text Text
getLicenseMap licenses = fromList $ catMaybes $ toPair <$> licenses
where
toPair license = case fSynFV <$> fieldValue "License" license of
Just ("", _) -> Nothing
Just (_, "") -> Nothing
Just (name, desc) -> Just (name, desc)
Nothing -> Nothing
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