{-# LANGUAGE FlexibleInstances, ScopedTypeVariables, TypeSynonymInstances #-}
{-# OPTIONS_GHC -fno-warn-orphans -fno-warn-name-shadowing -fno-warn-unused-do-bind #-}
module Debian.Control.String
(
Control'(..)
, Paragraph'(..)
, Field'(..)
, Control
, Paragraph
, Field
, ControlParser
, ControlFunctions(..)
, pControl
, mergeControls
, fieldValue
, removeField
, prependFields
, appendFields
, renameField
, modifyField
, raiseFields
) where
import qualified Control.Exception as E
import Data.Char (toLower)
import Data.List (find)
import Debian.Control.Common (ControlFunctions(parseControlFromFile, parseControlFromHandle, parseControl, lookupP, stripWS, protectFieldText, asString),
Control'(Control), Paragraph'(Paragraph), Field'(Field, Comment),
mergeControls, fieldValue, removeField, prependFields, appendFields,
renameField, modifyField, raiseFields, protectFieldText')
import System.IO (hGetContents)
import Text.ParserCombinators.Parsec (CharParser, parse, parseFromFile, sepEndBy, satisfy, oneOf, string, lookAhead, try, many, many1, (<|>), noneOf, char, eof)
type Field = Field' String
type Control = Control' String
type Paragraph = Paragraph' String
instance ControlFunctions String where
parseControlFromFile :: [Char] -> IO (Either ParseError (Control' [Char]))
parseControlFromFile [Char]
filepath =
forall a. Parser a -> [Char] -> IO (Either ParseError a)
parseFromFile ControlParser (Control' [Char])
pControl [Char]
filepath
parseControlFromHandle :: [Char] -> Handle -> IO (Either ParseError (Control' [Char]))
parseControlFromHandle [Char]
sourceName Handle
handle =
forall e a. Exception e => IO a -> IO (Either e a)
E.try (Handle -> IO [Char]
hGetContents Handle
handle) forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>=
forall a c b. (a -> c) -> (b -> c) -> Either a b -> c
either (\ (SomeException
e :: E.SomeException) -> forall a. HasCallStack => [Char] -> a
error ([Char]
"parseControlFromHandle String: Failure parsing " forall a. [a] -> [a] -> [a]
++ [Char]
sourceName forall a. [a] -> [a] -> [a]
++ [Char]
": " forall a. [a] -> [a] -> [a]
++ forall a. Show a => a -> [Char]
show SomeException
e)) (forall (m :: * -> *) a. Monad m => a -> m a
return forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a.
ControlFunctions a =>
[Char] -> a -> Either ParseError (Control' a)
parseControl [Char]
sourceName)
parseControl :: [Char] -> [Char] -> Either ParseError (Control' [Char])
parseControl [Char]
sourceName [Char]
c =
forall s t a.
Stream s Identity t =>
Parsec s () a -> [Char] -> s -> Either ParseError a
parse ControlParser (Control' [Char])
pControl [Char]
sourceName [Char]
c
lookupP :: [Char] -> Paragraph' [Char] -> Maybe (Field' [Char])
lookupP [Char]
fieldName (Paragraph [Field' [Char]]
paragraph) =
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Maybe a
find ([Char] -> Field' [Char] -> Bool
hasFieldName (forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toLower [Char]
fieldName)) [Field' [Char]]
paragraph
where hasFieldName :: [Char] -> Field' [Char] -> Bool
hasFieldName [Char]
name (Field ([Char]
fieldName',[Char]
_)) = [Char]
name forall a. Eq a => a -> a -> Bool
== forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toLower [Char]
fieldName'
hasFieldName [Char]
_ Field' [Char]
_ = Bool
False
stripWS :: [Char] -> [Char]
stripWS = forall a. [a] -> [a]
reverse forall b c a. (b -> c) -> (a -> b) -> a -> c
. [Char] -> [Char]
strip forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. [a] -> [a]
reverse forall b c a. (b -> c) -> (a -> b) -> a -> c
. [Char] -> [Char]
strip
where strip :: [Char] -> [Char]
strip = forall a. (a -> Bool) -> [a] -> [a]
dropWhile (forall a b c. (a -> b -> c) -> b -> a -> c
flip forall (t :: * -> *) a. (Foldable t, Eq a) => a -> t a -> Bool
elem ([Char]
" \t" :: [Char]))
protectFieldText :: [Char] -> [Char]
protectFieldText = forall a.
(StringLike a, ListLike a Char, ControlFunctions a) =>
a -> a
protectFieldText'
asString :: [Char] -> [Char]
asString = forall a. a -> a
id
type ControlParser a = CharParser () a
pControl :: ControlParser Control
pControl :: ControlParser (Control' [Char])
pControl =
do forall s u (m :: * -> *) a. ParsecT s u m a -> ParsecT s u m [a]
many forall a b. (a -> b) -> a -> b
$ forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n'
forall s (m :: * -> *) t u a sep.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m sep -> ParsecT s u m [a]
sepEndBy ControlParser (Paragraph' [Char])
pParagraph ParsecT [Char] () Identity [Char]
pBlanks forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= forall (m :: * -> *) a. Monad m => a -> m a
return forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. [Paragraph' a] -> Control' a
Control
pParagraph :: ControlParser Paragraph
pParagraph :: ControlParser (Paragraph' [Char])
pParagraph = forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m [a]
many1 (ParsecT [Char] () Identity (Field' [Char])
pComment forall s u (m :: * -> *) a.
ParsecT s u m a -> ParsecT s u m a -> ParsecT s u m a
<|> ParsecT [Char] () Identity (Field' [Char])
pField) forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= forall (m :: * -> *) a. Monad m => a -> m a
return forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. [Field' a] -> Paragraph' a
Paragraph
pField :: ControlParser Field
pField :: ParsecT [Char] () Identity (Field' [Char])
pField =
do Char
c1 <- forall s (m :: * -> *) u.
Stream s m Char =>
[Char] -> ParsecT s u m Char
noneOf [Char]
"#\n"
[Char]
fieldName <- forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m [a]
many1 forall a b. (a -> b) -> a -> b
$ forall s (m :: * -> *) u.
Stream s m Char =>
[Char] -> ParsecT s u m Char
noneOf [Char]
":\n"
forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
':'
[Char]
fieldValue <- forall s u (m :: * -> *) a. ParsecT s u m a -> ParsecT s u m [a]
many ControlParser Char
fcharfws
(forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n' forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> forall (m :: * -> *) a. Monad m => a -> m a
return ()) forall s u (m :: * -> *) a.
ParsecT s u m a -> ParsecT s u m a -> ParsecT s u m a
<|> forall s (m :: * -> *) t u.
(Stream s m t, Show t) =>
ParsecT s u m ()
eof
forall (m :: * -> *) a. Monad m => a -> m a
return forall a b. (a -> b) -> a -> b
$ forall a. (a, a) -> Field' a
Field (Char
c1 forall a. a -> [a] -> [a]
: [Char]
fieldName, [Char]
fieldValue)
pComment :: ControlParser Field
=
do forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'#'
[Char]
text <- forall s u (m :: * -> *) a. ParsecT s u m a -> ParsecT s u m [a]
many (forall s (m :: * -> *) u.
Stream s m Char =>
(Char -> Bool) -> ParsecT s u m Char
satisfy (Bool -> Bool
not forall b c a. (b -> c) -> (a -> b) -> a -> c
. (forall a. Eq a => a -> a -> Bool
(==) Char
'\n')))
forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n'
forall (m :: * -> *) a. Monad m => a -> m a
return forall a b. (a -> b) -> a -> b
$ forall a. a -> Field' a
Comment ([Char]
"#" forall a. [a] -> [a] -> [a]
++ [Char]
text forall a. [a] -> [a] -> [a]
++ [Char]
"\n")
fcharfws :: ControlParser Char
fcharfws :: ControlParser Char
fcharfws = ControlParser Char
fchar forall s u (m :: * -> *) a.
ParsecT s u m a -> ParsecT s u m a -> ParsecT s u m a
<|> (forall tok st a. GenParser tok st a -> GenParser tok st a
try forall a b. (a -> b) -> a -> b
$ forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m a
lookAhead (forall s (m :: * -> *) u.
Stream s m Char =>
[Char] -> ParsecT s u m [Char]
string [Char]
"\n ") forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n') forall s u (m :: * -> *) a.
ParsecT s u m a -> ParsecT s u m a -> ParsecT s u m a
<|> (forall tok st a. GenParser tok st a -> GenParser tok st a
try forall a b. (a -> b) -> a -> b
$ forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m a
lookAhead (forall s (m :: * -> *) u.
Stream s m Char =>
[Char] -> ParsecT s u m [Char]
string [Char]
"\n\t") forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n') forall s u (m :: * -> *) a.
ParsecT s u m a -> ParsecT s u m a -> ParsecT s u m a
<|> (forall tok st a. GenParser tok st a -> GenParser tok st a
try forall a b. (a -> b) -> a -> b
$ forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m a
lookAhead (forall s (m :: * -> *) u.
Stream s m Char =>
[Char] -> ParsecT s u m [Char]
string [Char]
"\n#") forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n')
fchar :: ControlParser Char
fchar :: ControlParser Char
fchar = forall s (m :: * -> *) u.
Stream s m Char =>
(Char -> Bool) -> ParsecT s u m Char
satisfy (forall a. Eq a => a -> a -> Bool
/=Char
'\n')
_fws :: ControlParser String
_fws :: ParsecT [Char] () Identity [Char]
_fws =
forall tok st a. GenParser tok st a -> GenParser tok st a
try forall a b. (a -> b) -> a -> b
$ do forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
'\n'
[Char]
ws <- forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m [a]
many1 (forall s (m :: * -> *) u.
Stream s m Char =>
Char -> ParsecT s u m Char
char Char
' ')
[Char]
c <- forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m [a]
many1 (forall s (m :: * -> *) u.
Stream s m Char =>
(Char -> Bool) -> ParsecT s u m Char
satisfy (Bool -> Bool
not forall b c a. (b -> c) -> (a -> b) -> a -> c
. (forall a. Eq a => a -> a -> Bool
(==) Char
'\n')))
forall (m :: * -> *) a. Monad m => a -> m a
return forall a b. (a -> b) -> a -> b
$ Char
'\n' forall a. a -> [a] -> [a]
: ([Char]
ws forall a. [a] -> [a] -> [a]
++ [Char]
c)
pBlanks :: ControlParser String
pBlanks :: ParsecT [Char] () Identity [Char]
pBlanks = forall s (m :: * -> *) t u a.
Stream s m t =>
ParsecT s u m a -> ParsecT s u m [a]
many1 (forall s (m :: * -> *) u.
Stream s m Char =>
[Char] -> ParsecT s u m Char
oneOf [Char]
" \n")