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Keep comment-opening '%' along with the comment and support empty lines

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Tissevert 2019-05-31 15:07:41 +02:00
parent 85e4eb9273
commit 9dac275f68
2 changed files with 5 additions and 4 deletions
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7
src/PDF/Body.hs
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@ -7,7 +7,7 @@ module PDF.Body (
import Control.Applicative ((<|>))
import Control.Monad.State (get, gets, modify)
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as BS (drop, unpack)
import qualified Data.ByteString.Char8 as BS (cons, drop, unpack)
import Data.Map ((!))
import qualified Data.Map as Map (empty, insert, lookup)
import qualified PDF.EOL as EOL (charset, parser)
@ -41,8 +41,9 @@ pushOccurrence newOccurrence = modifyFlow $ \flow -> flow {
}
comment :: Parser u String
comment = BS.unpack <$>
(char '%' *> takeAll (not . (`elem` EOL.charset)) <* EOL.parser)
comment = BS.unpack <$> (option "" afterPercent <* EOL.parser)
where
afterPercent = BS.cons <$> char '%' <*> takeAll (not . (`elem` EOL.charset))
lookupOffset :: Int -> XRefSection -> Maybe Int
lookupOffset _ [] = Nothing

2
src/PDF/Object.hs
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@ -242,7 +242,7 @@ data Occurrence = Comment String | Indirect IndirectObjCoordinates deriving Show
outputOccurrence :: Map Int Object -> Occurrence -> OBuilder
outputOccurrence _ (Comment c) =
Output.string (printf "%%%s" c) `mappend` newLine
Output.string c `mappend` newLine
outputOccurrence objects (Indirect (IndirectObjCoordinates {objectId, versionNumber})) =
saveOffset (ObjectId objectId)
>> Output.string (printf "%d %d obj" objectId versionNumber)