Org reader: respect `author` export option

The `author` option controls whether the author should be included in
the final markup.  Setting `#+OPTIONS: author:nil` will drop the author
from the final meta-data output.

4 files changed, 23 insertions, 4 deletions

diff --git a/src/Text/Pandoc/Readers/Org/Blocks.hs b/src/Text/Pandoc/Readers/Org/Blocks.hs
index b955dafa7..b1f56eed0 100644
--- a/src/Text/Pandoc/Readers/Org/Blocks.hs
+++ b/src/Text/Pandoc/Readers/Org/Blocks.hs
@@ -35,7 +35,7 @@ module Text.Pandoc.Readers.Org.Blocks
 
 import           Text.Pandoc.Readers.Org.BlockStarts
 import           Text.Pandoc.Readers.Org.Inlines
-import           Text.Pandoc.Readers.Org.Meta ( metaLine )
+import           Text.Pandoc.Readers.Org.Meta ( metaExport, metaLine )
 import           Text.Pandoc.Readers.Org.ParserState
 import           Text.Pandoc.Readers.Org.Parsing
 import           Text.Pandoc.Readers.Org.Shared
@@ -230,8 +230,8 @@ blockList = do
 -- | Get the meta information safed in the state.
 meta :: OrgParser Meta
 meta = do
-  st <- getState
-  return $ runF (orgStateMeta st) st
+  meta' <- metaExport
+  runF meta' <$> getState
 
 blocks :: OrgParser (F Blocks)
 blocks = mconcat <$> manyTill block (void (lookAhead headerStart) <|> eof)
diff --git a/src/Text/Pandoc/Readers/Org/ExportSettings.hs b/src/Text/Pandoc/Readers/Org/ExportSettings.hs
index b48acc9c4..b539a8000 100644
--- a/src/Text/Pandoc/Readers/Org/ExportSettings.hs
+++ b/src/Text/Pandoc/Readers/Org/ExportSettings.hs
@@ -54,7 +54,7 @@ exportSetting = choice
   , ignoredSetting "<"
   , ignoredSetting "\\n"
   , archivedTreeSetting "arch" (\val es -> es { exportArchivedTrees = val })
-  , ignoredSetting "author"
+  , booleanSetting "author" (\val es -> es { exportWithAuthor = val })
   , ignoredSetting "c"
   , ignoredSetting "creator"
   , complementableListSetting "d" (\val es -> es { exportDrawers = val })
diff --git a/src/Text/Pandoc/Readers/Org/Meta.hs b/src/Text/Pandoc/Readers/Org/Meta.hs
index 51fd2c9d8..4d74713d6 100644
--- a/src/Text/Pandoc/Readers/Org/Meta.hs
+++ b/src/Text/Pandoc/Readers/Org/Meta.hs
@@ -29,6 +29,7 @@ Parsers for Org-mode meta declarations.
 -}
 module Text.Pandoc.Readers.Org.Meta
   ( metaLine
+  , metaExport
   ) where
 
 import           Text.Pandoc.Readers.Org.BlockStarts
@@ -48,6 +49,22 @@ import           Data.List ( intersperse )
 import qualified Data.Map as M
 import           Network.HTTP ( urlEncode )
 
+-- | Returns the current meta, respecting export options.
+metaExport :: OrgParser (F Meta)
+metaExport = do
+  st <- getState
+  let withAuthor = extractExportOption exportWithAuthor st
+  return $ (if withAuthor then id else removeMeta "author")
+        <$> orgStateMeta st
+
+removeMeta :: String -> Meta -> Meta
+removeMeta key meta' =
+  let metaMap = unMeta meta'
+  in Meta $ M.delete key metaMap
+
+extractExportOption :: (ExportSettings -> a) -> OrgParserState -> a
+extractExportOption ex = ex . orgStateExportSettings
+
 -- | Parse and handle a single line containing meta information
 -- The order, in which blocks are tried, makes sure that we're not looking at
 -- the beginning of a block, so we don't need to check for it
diff --git a/src/Text/Pandoc/Readers/Org/ParserState.hs b/src/Text/Pandoc/Readers/Org/ParserState.hs
index 48e7717cd..661ccc4ea 100644
--- a/src/Text/Pandoc/Readers/Org/ParserState.hs
+++ b/src/Text/Pandoc/Readers/Org/ParserState.hs
@@ -163,6 +163,7 @@ data ExportSettings = ExportSettings
   , exportSmartQuotes     :: Bool -- ^ Parse quotes smartly
   , exportSpecialStrings  :: Bool -- ^ Parse ellipses and dashes smartly
   , exportSubSuperscripts :: Bool -- ^ TeX-like syntax for sub- and superscripts
+  , exportWithAuthor      :: Bool -- ^ Include author in final meta-data
   }
 
 instance Default ExportSettings where
@@ -177,6 +178,7 @@ defaultExportSettings = ExportSettings
   , exportSmartQuotes = True
   , exportSpecialStrings = True
   , exportSubSuperscripts = True
+  , exportWithAuthor = True
   }