{-# LANGUAGE CPP, ForeignFunctionInterface, GeneralizedNewtypeDeriving,
DeriveGeneric, DeriveDataTypeable, FlexibleContexts #-}
module CMarkGFM (
commonmarkToHtml
, commonmarkToXml
, commonmarkToMan
, commonmarkToLaTeX
, commonmarkToNode
, nodeToHtml
, nodeToXml
, nodeToMan
, nodeToLaTeX
, nodeToCommonmark
, optSourcePos
, optHardBreaks
, optSmart
, optSafe
, extStrikethrough
, extTable
, extAutolink
, extTagfilter
, Node(..)
, NodeType(..)
, PosInfo(..)
, DelimType(..)
, ListType(..)
, ListAttributes(..)
, Url
, Title
, Level
, Info
, TableCellAlignment(..)
, CMarkOption
, CMarkExtension
) where
import Foreign
import Foreign.C.Types
import Foreign.C.String (CString, withCString)
import qualified System.IO.Unsafe as Unsafe
import Data.Maybe (fromMaybe)
import GHC.Generics (Generic)
import Data.Data (Data)
import Data.Typeable (Typeable)
import Data.Text (Text, empty)
import qualified Data.Text.Foreign as TF
import qualified Data.ByteString as B
import Data.Text.Encoding (encodeUtf8)
import Control.Applicative ((<$>), (<*>))
#include <cmark.h>
#include <core-extensions.h>
-- | Ensure core extensions are registered.
ensurePluginsRegistered :: IO ()
ensurePluginsRegistered = c_core_extensions_ensure_registered
-- | Frees a cmark linked list, produced by extsToLlist.
freeLlist :: LlistPtr a -> IO ()
freeLlist = c_cmark_llist_free c_CMARK_DEFAULT_MEM_ALLOCATOR
-- | Converts a list of resolved extension pointers to a single cmark
-- linked list, which can be passed to functions requiring a list of
-- extensions.
extsToLlist :: [ExtensionPtr] -> IO (LlistPtr ExtensionPtr)
extsToLlist [] = return nullPtr
extsToLlist (h:t) = do
t' <- extsToLlist t
c_cmark_llist_append c_CMARK_DEFAULT_MEM_ALLOCATOR t' (castPtr h)
-- | Resolves CMarkExtensions to pointers.
resolveExts :: [CMarkExtension] -> IO [ExtensionPtr]
resolveExts exts = do
ensurePluginsRegistered
mapM resolveExt exts
where resolveExt ext = do p <- withCString (unCMarkExtension ext) c_cmark_find_syntax_extension
if p == nullPtr then
fail $ "could not load extension " ++ unCMarkExtension ext
else
return p
-- | Convert CommonMark formatted text to Html, using cmark's
-- built-in renderer.
commonmarkToHtml :: [CMarkOption] -> [CMarkExtension] -> Text -> Text
commonmarkToHtml opts exts =
commonmarkToX render_html opts exts Nothing
where exts' = Unsafe.unsafePerformIO $ resolveExts exts
render_html n o _ = do
llist <- extsToLlist exts'
r <- c_cmark_render_html n o llist
freeLlist llist
return r
-- | Convert CommonMark formatted text to CommonMark XML, using cmark's
-- built-in renderer.
commonmarkToXml :: [CMarkOption] -> [CMarkExtension] -> Text -> Text
commonmarkToXml opts exts = commonmarkToX render_xml opts exts Nothing
where render_xml n o _ = c_cmark_render_xml n o
-- | Convert CommonMark formatted text to groff man, using cmark's
-- built-in renderer.
commonmarkToMan :: [CMarkOption] -> [CMarkExtension] -> Maybe Int -> Text -> Text
commonmarkToMan = commonmarkToX c_cmark_render_man
-- | Convert CommonMark formatted text to latex, using cmark's
-- built-in renderer.
commonmarkToLaTeX :: [CMarkOption] -> [CMarkExtension] -> Maybe Int -> Text -> Text
commonmarkToLaTeX = commonmarkToX c_cmark_render_latex
-- | Convert CommonMark formatted text to a structured 'Node' tree,
-- which can be transformed or rendered using Haskell code.
commonmarkToNode :: [CMarkOption] -> [CMarkExtension] -> Text -> Node
commonmarkToNode opts exts s = Unsafe.unsafePerformIO $ do
exts' <- resolveExts exts
parser <- c_cmark_parser_new (combineOptions opts)
mapM_ (c_cmark_parser_attach_syntax_extension parser) exts'
TF.withCStringLen s $! \(ptr, len) ->
c_cmark_parser_feed parser ptr len
nptr <- c_cmark_parser_finish parser
c_cmark_parser_free parser
fptr <- newForeignPtr c_cmark_node_free nptr
withForeignPtr fptr toNode
nodeToHtml :: [CMarkOption] -> [CMarkExtension] -> Node -> Text
nodeToHtml opts exts =
nodeToX render_html opts Nothing
where exts' = Unsafe.unsafePerformIO $ resolveExts exts
render_html n o _ = do
llist <- extsToLlist exts'
r <- c_cmark_render_html n o llist
freeLlist llist
return r
nodeToXml :: [CMarkOption] -> Node -> Text
nodeToXml opts = nodeToX render_xml opts Nothing
where render_xml n o _ = c_cmark_render_xml n o
nodeToMan :: [CMarkOption] -> Maybe Int -> Node -> Text
nodeToMan = nodeToX c_cmark_render_man
nodeToLaTeX :: [CMarkOption] -> Maybe Int -> Node -> Text
nodeToLaTeX = nodeToX c_cmark_render_latex
nodeToCommonmark :: [CMarkOption] -> Maybe Int -> Node -> Text
nodeToCommonmark = nodeToX c_cmark_render_commonmark
type Renderer = NodePtr -> CInt -> Int -> IO CString
nodeToX :: Renderer -> [CMarkOption] -> Maybe Int -> Node -> Text
nodeToX renderer opts mbWidth node = Unsafe.unsafePerformIO $ do
nptr <- fromNode node
fptr <- newForeignPtr c_cmark_node_free nptr
withForeignPtr fptr $ \ptr -> do
cstr <- renderer ptr (combineOptions opts) (fromMaybe 0 mbWidth)
TF.peekCStringLen (cstr, c_strlen cstr)
commonmarkToX :: Renderer
-> [CMarkOption]
-> [CMarkExtension]
-> Maybe Int
-> Text
-> Text
commonmarkToX renderer opts exts mbWidth s = Unsafe.unsafePerformIO $
TF.withCStringLen s $ \(ptr, len) -> do
let opts' = combineOptions opts
exts' <- resolveExts exts
parser <- c_cmark_parser_new opts'
mapM_ (c_cmark_parser_attach_syntax_extension parser) exts'
c_cmark_parser_feed parser ptr len
nptr <- c_cmark_parser_finish parser
c_cmark_parser_free parser
fptr <- newForeignPtr c_cmark_node_free nptr
withForeignPtr fptr $ \p -> do
str <- renderer p opts' (fromMaybe 0 mbWidth)
t <- TF.peekCStringLen $! (str, c_strlen str)
return t
data ParserPhantom
type ParserPtr = Ptr ParserPhantom
data NodePhantom
type NodePtr = Ptr NodePhantom
data LlistPhantom a
type LlistPtr a = Ptr (LlistPhantom a)
data MemPhantom
type MemPtr = Ptr MemPhantom
data ExtensionPhantom
type ExtensionPtr = Ptr ExtensionPhantom
data Node = Node (Maybe PosInfo) NodeType [Node]
deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
data DelimType =
PERIOD_DELIM
| PAREN_DELIM
deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
data ListType =
BULLET_LIST
| ORDERED_LIST
deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
data ListAttributes = ListAttributes{
listType :: ListType
, listTight :: Bool
, listStart :: Int
, listDelim :: DelimType
} deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
type Url = Text
type Title = Text
type Level = Int
type Info = Text
type OnEnter = Text
type OnExit = Text
data TableCellAlignment = NoAlignment | LeftAligned | CenterAligned | RightAligned
deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
data NodeType =
DOCUMENT
| THEMATIC_BREAK
| PARAGRAPH
| BLOCK_QUOTE
| HTML_BLOCK Text
| CUSTOM_BLOCK OnEnter OnExit
| CODE_BLOCK Info Text
| HEADING Level
| LIST ListAttributes
| ITEM
| TEXT Text
| SOFTBREAK
| LINEBREAK
| HTML_INLINE Text
| CUSTOM_INLINE OnEnter OnExit
| CODE Text
| EMPH
| STRONG
| LINK Url Title
| IMAGE Url Title
| STRIKETHROUGH
| TABLE [TableCellAlignment]
| TABLE_ROW
| TABLE_CELL
deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
data PosInfo = PosInfo{ startLine :: Int
, startColumn :: Int
, endLine :: Int
, endColumn :: Int
}
deriving (Show, Read, Eq, Ord, Typeable, Data, Generic)
newtype CMarkOption = CMarkOption { unCMarkOption :: CInt }
-- | Combine a list of options into a single option, using bitwise or.
combineOptions :: [CMarkOption] -> CInt
combineOptions = foldr ((.|.) . unCMarkOption) 0
-- | Include a @data-sourcepos@ attribute on block elements.
optSourcePos :: CMarkOption
optSourcePos = CMarkOption #const CMARK_OPT_SOURCEPOS
-- | Render @softbreak@ elements as hard line breaks.
optHardBreaks :: CMarkOption
optHardBreaks = CMarkOption #const CMARK_OPT_HARDBREAKS
-- | Convert straight quotes to curly, @---@ to em-dash, @--@ to en-dash.
optSmart :: CMarkOption
optSmart = CMarkOption #const CMARK_OPT_SMART
-- | Suppress rendering of raw HTML and potentially dangerous URLs in links
-- and images.
optSafe :: CMarkOption
optSafe = CMarkOption #const CMARK_OPT_SAFE
newtype CMarkExtension = CMarkExtension { unCMarkExtension :: String }
extStrikethrough :: CMarkExtension
extStrikethrough = CMarkExtension "strikethrough"
extTable :: CMarkExtension
extTable = CMarkExtension "table"
extAutolink :: CMarkExtension
extAutolink = CMarkExtension "autolink"
extTagfilter :: CMarkExtension
extTagfilter = CMarkExtension "tagfilter"
ptrToNodeType :: NodePtr -> IO NodeType
ptrToNodeType ptr = do
nodeType <- c_cmark_node_get_type ptr
case nodeType of
#const CMARK_NODE_DOCUMENT
-> return DOCUMENT
#const CMARK_NODE_THEMATIC_BREAK
-> return THEMATIC_BREAK
#const CMARK_NODE_PARAGRAPH
-> return PARAGRAPH
#const CMARK_NODE_BLOCK_QUOTE
-> return BLOCK_QUOTE
#const CMARK_NODE_HTML_BLOCK
-> HTML_BLOCK <$> literal
#const CMARK_NODE_CUSTOM_BLOCK
-> CUSTOM_BLOCK <$> onEnter <*> onExit
#const CMARK_NODE_CODE_BLOCK
-> CODE_BLOCK <$> info
<*> literal
#const CMARK_NODE_LIST
-> LIST <$> listAttr
#const CMARK_NODE_ITEM
-> return ITEM
#const CMARK_NODE_HEADING
-> HEADING <$> level
#const CMARK_NODE_EMPH
-> return EMPH
#const CMARK_NODE_STRONG
-> return STRONG
#const CMARK_NODE_LINK
-> LINK <$> url <*> title
#const CMARK_NODE_IMAGE
-> IMAGE <$> url <*> title
#const CMARK_NODE_TEXT
-> TEXT <$> literal
#const CMARK_NODE_CODE
-> CODE <$> literal
#const CMARK_NODE_HTML_INLINE
-> HTML_INLINE <$> literal
#const CMARK_NODE_CUSTOM_INLINE
-> CUSTOM_INLINE <$> onEnter <*> onExit
#const CMARK_NODE_SOFTBREAK
-> return SOFTBREAK
#const CMARK_NODE_LINEBREAK
-> return LINEBREAK
_ -> if nodeType == fromIntegral (Unsafe.unsafePerformIO $ peek c_CMARK_NODE_STRIKETHROUGH) then
return STRIKETHROUGH
else if nodeType == fromIntegral (Unsafe.unsafePerformIO $ peek c_CMARK_NODE_TABLE) then
TABLE <$> alignments
else if nodeType == fromIntegral (Unsafe.unsafePerformIO $ peek c_CMARK_NODE_TABLE_ROW) then
return TABLE_ROW
else if nodeType == fromIntegral (Unsafe.unsafePerformIO $ peek c_CMARK_NODE_TABLE_CELL) then
return TABLE_CELL
else
error $ "Unknown node type " ++ (show nodeType)
where literal = c_cmark_node_get_literal ptr >>= totext
level = c_cmark_node_get_heading_level ptr
onEnter = c_cmark_node_get_on_enter ptr >>= totext
onExit = c_cmark_node_get_on_exit ptr >>= totext
listAttr = do
listtype <- c_cmark_node_get_list_type ptr
listdelim <- c_cmark_node_get_list_delim ptr
tight <- c_cmark_node_get_list_tight ptr
start <- c_cmark_node_get_list_start ptr
return ListAttributes{
listType = case listtype of
(#const CMARK_ORDERED_LIST) -> ORDERED_LIST
(#const CMARK_BULLET_LIST) -> BULLET_LIST
_ -> BULLET_LIST
, listDelim = case listdelim of
(#const CMARK_PERIOD_DELIM) -> PERIOD_DELIM
(#const CMARK_PAREN_DELIM) -> PAREN_DELIM
_ -> PERIOD_DELIM
, listTight = tight
, listStart = start
}
url = c_cmark_node_get_url ptr >>= totext
title = c_cmark_node_get_title ptr >>= totext
info = c_cmark_node_get_fence_info ptr >>= totext
alignments = do
ncols <- c_cmarkextensions_get_table_columns ptr
cols <- c_cmarkextensions_get_table_alignments ptr
mapM (fmap ucharToAlignment . peekElemOff cols) [0..(fromIntegral ncols) - 1]
ucharToAlignment (CUChar 108) = LeftAligned
ucharToAlignment (CUChar 99) = CenterAligned
ucharToAlignment (CUChar 114) = RightAligned
ucharToAlignment _ = NoAlignment
getPosInfo :: NodePtr -> IO (Maybe PosInfo)
getPosInfo ptr = do
startline <- c_cmark_node_get_start_line ptr
endline <- c_cmark_node_get_end_line ptr
startcol <- c_cmark_node_get_start_column ptr
endcol <- c_cmark_node_get_end_column ptr
if startline + endline + startcol + endcol == 0
then return Nothing
else return $ Just PosInfo{ startLine = startline
, startColumn = startcol
, endLine = endline
, endColumn = endcol }
toNode :: NodePtr -> IO Node
toNode ptr = do
let handleNodes ptr' =
if ptr' == nullPtr
then return []
else do
x <- toNode ptr'
xs <- c_cmark_node_next ptr' >>= handleNodes
return $! (x:xs)
nodeType <- ptrToNodeType ptr
children <- c_cmark_node_first_child ptr >>= handleNodes
posinfo <- getPosInfo ptr
return $! Node posinfo nodeType children
fromNode :: Node -> IO NodePtr
fromNode (Node _ nodeType children) = do
node <- case nodeType of
DOCUMENT -> c_cmark_node_new (#const CMARK_NODE_DOCUMENT)
THEMATIC_BREAK -> c_cmark_node_new (#const CMARK_NODE_THEMATIC_BREAK)
PARAGRAPH -> c_cmark_node_new (#const CMARK_NODE_PARAGRAPH)
BLOCK_QUOTE -> c_cmark_node_new (#const CMARK_NODE_BLOCK_QUOTE)
HTML_BLOCK literal -> do
n <- c_cmark_node_new (#const CMARK_NODE_HTML_BLOCK)
c_cmark_node_set_literal n =<< fromtext literal
return n
CUSTOM_BLOCK onEnter onExit -> do
n <- c_cmark_node_new (#const CMARK_NODE_CUSTOM_BLOCK)
c_cmark_node_set_on_enter n =<< fromtext onEnter
c_cmark_node_set_on_exit n =<< fromtext onExit
return n
CODE_BLOCK info literal -> do
n <- c_cmark_node_new (#const CMARK_NODE_CODE_BLOCK)
c_cmark_node_set_literal n =<< fromtext literal
c_cmark_node_set_fence_info n =<< fromtext info
return n
LIST attr -> do
n <- c_cmark_node_new (#const CMARK_NODE_LIST)
c_cmark_node_set_list_type n $ case listType attr of
ORDERED_LIST -> #const CMARK_ORDERED_LIST
BULLET_LIST -> #const CMARK_BULLET_LIST
c_cmark_node_set_list_delim n $ case listDelim attr of
PERIOD_DELIM -> #const CMARK_PERIOD_DELIM
PAREN_DELIM -> #const CMARK_PAREN_DELIM
c_cmark_node_set_list_tight n $ listTight attr
c_cmark_node_set_list_start n $ listStart attr
return n
ITEM -> c_cmark_node_new (#const CMARK_NODE_ITEM)
HEADING lev -> do
n <- c_cmark_node_new (#const CMARK_NODE_HEADING)
c_cmark_node_set_heading_level n lev
return n
EMPH -> c_cmark_node_new (#const CMARK_NODE_EMPH)
STRONG -> c_cmark_node_new (#const CMARK_NODE_STRONG)
LINK url title -> do
n <- c_cmark_node_new (#const CMARK_NODE_LINK)
c_cmark_node_set_url n =<< fromtext url
c_cmark_node_set_title n =<< fromtext title
return n
IMAGE url title -> do
n <- c_cmark_node_new (#const CMARK_NODE_IMAGE)
c_cmark_node_set_url n =<< fromtext url
c_cmark_node_set_title n =<< fromtext title
return n
TEXT literal -> do
n <- c_cmark_node_new (#const CMARK_NODE_TEXT)
c_cmark_node_set_literal n =<< fromtext literal
return n
CODE literal -> do
n <- c_cmark_node_new (#const CMARK_NODE_CODE)
c_cmark_node_set_literal n =<< fromtext literal
return n
HTML_INLINE literal -> do
n <- c_cmark_node_new (#const CMARK_NODE_HTML_INLINE)
c_cmark_node_set_literal n =<< fromtext literal
return n
CUSTOM_INLINE onEnter onExit -> do
n <- c_cmark_node_new (#const CMARK_NODE_CUSTOM_INLINE)
c_cmark_node_set_on_enter n =<< fromtext onEnter
c_cmark_node_set_on_exit n =<< fromtext onExit
return n
SOFTBREAK -> c_cmark_node_new (#const CMARK_NODE_SOFTBREAK)
LINEBREAK -> c_cmark_node_new (#const CMARK_NODE_LINEBREAK)
STRIKETHROUGH -> c_cmark_node_new (fromIntegral . Unsafe.unsafePerformIO $ peek c_CMARK_NODE_STRIKETHROUGH)
TABLE _ -> error "constructing table not supported"
TABLE_ROW -> error "constructing table row not supported"
TABLE_CELL -> error "constructing table cell not supported"
mapM_ (\child -> fromNode child >>= c_cmark_node_append_child node) children
return node
totext :: CString -> IO Text
totext str
| str == nullPtr = return empty
| otherwise = TF.peekCStringLen (str, c_strlen str)
fromtext :: Text -> IO CString
fromtext t = B.useAsCString (encodeUtf8 t) return
foreign import ccall "string.h strlen"
c_strlen :: CString -> Int
foreign import ccall "cmark.h cmark_node_new"
c_cmark_node_new :: Int -> IO NodePtr
foreign import ccall "cmark.h cmark_render_html"
c_cmark_render_html :: NodePtr -> CInt -> LlistPtr ExtensionPtr -> IO CString
foreign import ccall "cmark.h cmark_render_xml"
c_cmark_render_xml :: NodePtr -> CInt -> IO CString
foreign import ccall "cmark.h cmark_render_man"
c_cmark_render_man :: NodePtr -> CInt -> Int -> IO CString
foreign import ccall "cmark.h cmark_render_latex"
c_cmark_render_latex :: NodePtr -> CInt -> Int -> IO CString
foreign import ccall "cmark.h cmark_render_commonmark"
c_cmark_render_commonmark :: NodePtr -> CInt -> Int -> IO CString
foreign import ccall "cmark.h cmark_parser_new"
c_cmark_parser_new :: CInt -> IO ParserPtr
foreign import ccall "cmark.h cmark_parser_feed"
c_cmark_parser_feed :: ParserPtr -> CString -> Int -> IO ()
foreign import ccall "cmark.h cmark_parser_finish"
c_cmark_parser_finish :: ParserPtr -> IO NodePtr
foreign import ccall "cmark.h cmark_parser_free"
c_cmark_parser_free :: ParserPtr -> IO ()
foreign import ccall "cmark.h cmark_node_get_type"
c_cmark_node_get_type :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_first_child"
c_cmark_node_first_child :: NodePtr -> IO NodePtr
foreign import ccall "cmark.h cmark_node_next"
c_cmark_node_next :: NodePtr -> IO NodePtr
foreign import ccall "cmark.h cmark_node_get_literal"
c_cmark_node_get_literal :: NodePtr -> IO CString
foreign import ccall "cmark.h cmark_node_get_url"
c_cmark_node_get_url :: NodePtr -> IO CString
foreign import ccall "cmark.h cmark_node_get_title"
c_cmark_node_get_title :: NodePtr -> IO CString
foreign import ccall "cmark.h cmark_node_get_heading_level"
c_cmark_node_get_heading_level :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_list_type"
c_cmark_node_get_list_type :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_list_tight"
c_cmark_node_get_list_tight :: NodePtr -> IO Bool
foreign import ccall "cmark.h cmark_node_get_list_start"
c_cmark_node_get_list_start :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_list_delim"
c_cmark_node_get_list_delim :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_fence_info"
c_cmark_node_get_fence_info :: NodePtr -> IO CString
foreign import ccall "cmark.h cmark_node_get_start_line"
c_cmark_node_get_start_line :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_start_column"
c_cmark_node_get_start_column :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_end_line"
c_cmark_node_get_end_line :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_end_column"
c_cmark_node_get_end_column :: NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_get_on_enter"
c_cmark_node_get_on_enter :: NodePtr -> IO CString
foreign import ccall "cmark.h cmark_node_get_on_exit"
c_cmark_node_get_on_exit :: NodePtr -> IO CString
foreign import ccall "cmark.h cmark_node_append_child"
c_cmark_node_append_child :: NodePtr -> NodePtr -> IO Int
foreign import ccall "cmark.h cmark_node_set_literal"
c_cmark_node_set_literal :: NodePtr -> CString -> IO Int
foreign import ccall "cmark.h cmark_node_set_url"
c_cmark_node_set_url :: NodePtr -> CString -> IO Int
foreign import ccall "cmark.h cmark_node_set_title"
c_cmark_node_set_title :: NodePtr -> CString -> IO Int
foreign import ccall "cmark.h cmark_node_set_heading_level"
c_cmark_node_set_heading_level :: NodePtr -> Int -> IO Int
foreign import ccall "cmark.h cmark_node_set_list_type"
c_cmark_node_set_list_type :: NodePtr -> Int -> IO Int
foreign import ccall "cmark.h cmark_node_set_list_tight"
c_cmark_node_set_list_tight :: NodePtr -> Bool -> IO Int
foreign import ccall "cmark.h cmark_node_set_list_start"
c_cmark_node_set_list_start :: NodePtr -> Int -> IO Int
foreign import ccall "cmark.h cmark_node_set_list_delim"
c_cmark_node_set_list_delim :: NodePtr -> Int -> IO Int
foreign import ccall "cmark.h cmark_node_set_fence_info"
c_cmark_node_set_fence_info :: NodePtr -> CString -> IO Int
foreign import ccall "cmark.h cmark_node_set_on_enter"
c_cmark_node_set_on_enter :: NodePtr -> CString -> IO Int
foreign import ccall "cmark.h cmark_node_set_on_exit"
c_cmark_node_set_on_exit :: NodePtr -> CString -> IO Int
foreign import ccall "cmark.h &cmark_node_free"
c_cmark_node_free :: FunPtr (NodePtr -> IO ())
foreign import ccall "core-extensions.h core_extensions_ensure_registered"
c_core_extensions_ensure_registered :: IO ()
foreign import ccall "cmark_extension_api.h cmark_find_syntax_extension"
c_cmark_find_syntax_extension :: CString -> IO ExtensionPtr
foreign import ccall "cmark.h cmark_llist_append"
c_cmark_llist_append :: MemPtr -> LlistPtr a -> Ptr () -> IO (LlistPtr a)
foreign import ccall "cmark.h cmark_llist_free"
c_cmark_llist_free :: MemPtr -> LlistPtr a -> IO ()
foreign import ccall "cmark.h &CMARK_DEFAULT_MEM_ALLOCATOR"
c_CMARK_DEFAULT_MEM_ALLOCATOR :: MemPtr
foreign import ccall "cmark_extension_api.h cmark_parser_attach_syntax_extension"
c_cmark_parser_attach_syntax_extension :: ParserPtr -> ExtensionPtr -> IO ()
foreign import ccall "strikethrough.h &CMARK_NODE_STRIKETHROUGH"
c_CMARK_NODE_STRIKETHROUGH :: Ptr CUShort
foreign import ccall "table.h &CMARK_NODE_TABLE"
c_CMARK_NODE_TABLE :: Ptr CUShort
foreign import ccall "table.h &CMARK_NODE_TABLE_ROW"
c_CMARK_NODE_TABLE_ROW :: Ptr CUShort
foreign import ccall "table.h &CMARK_NODE_TABLE_CELL"
c_CMARK_NODE_TABLE_CELL :: Ptr CUShort
foreign import ccall "core-extensions.h cmarkextensions_get_table_columns"
c_cmarkextensions_get_table_columns :: NodePtr -> IO CUShort
foreign import ccall "core-extensions.h cmarkextensions_get_table_alignments"
c_cmarkextensions_get_table_alignments :: NodePtr -> IO (Ptr CUChar)