diff options
Diffstat (limited to 'src/Text/Pandoc')
| -rw-r--r-- | src/Text/Pandoc/Parsing.hs | 77 |
1 files changed, 50 insertions, 27 deletions
diff --git a/src/Text/Pandoc/Parsing.hs b/src/Text/Pandoc/Parsing.hs index 922799171..503aa7f46 100644 --- a/src/Text/Pandoc/Parsing.hs +++ b/src/Text/Pandoc/Parsing.hs @@ -151,9 +151,9 @@ import Text.Pandoc.Builder (Blocks, Inlines) import qualified Text.Pandoc.UTF8 as UTF8 (putStrLn) import Text.Parsec import Text.Parsec.Pos (newPos) -import Data.Char ( toLower, toUpper, ord, isAscii, isAlphaNum, isDigit, isPunctuation ) +import Data.Char ( toLower, toUpper, ord, isAscii, isAlphaNum, isDigit, isHexDigit, + isSpace ) import Data.List ( intercalate, transpose ) -import Network.URI ( parseURI, URI (..), isAllowedInURI, isUnescapedInURI, escapeURIString ) import Text.Pandoc.Shared import qualified Data.Map as M import Text.TeXMath.Macros (applyMacros, Macro, parseMacroDefinitions) @@ -354,37 +354,60 @@ emailAddress = try $ liftA2 toResult mailbox (char '@' *> domain) sepby1 p sep = liftA2 (:) p (many (try $ sep >> p)) +-- Schemes from http://www.iana.org/assignments/uri-schemes.html plus +-- the unofficial schemes coap, doi, javascript. +schemes :: [String] +schemes = ["coap","doi","javascript","aaa","aaas","about","acap","cap","cid", + "crid","data","dav","dict","dns","file","ftp","geo","go","gopher", + "h323","http","https","iax","icap","im","imap","info","ipp","iris", + "iris.beep","iris.xpc","iris.xpcs","iris.lwz","ldap","mailto","mid", + "msrp","msrps","mtqp","mupdate","news","nfs","ni","nih","nntp", + "opaquelocktoken","pop","pres","rtsp","service","session","shttp","sieve", + "sip","sips","sms","snmp","soap.beep","soap.beeps","tag","tel","telnet", + "tftp","thismessage","tn3270","tip","tv","urn","vemmi","ws","wss","xcon", + "xcon-userid","xmlrpc.beep","xmlrpc.beeps","xmpp","z39.50r","z39.50s", + "adiumxtra","afp","afs","aim","apt","attachment","aw","beshare","bitcoin", + "bolo","callto","chrome","chrome-extension","com-eventbrite-attendee", + "content", "cvs","dlna-playsingle","dlna-playcontainer","dtn","dvb", + "ed2k","facetime","feed","finger","fish","gg","git","gizmoproject", + "gtalk","hcp","icon","ipn","irc","irc6","ircs","itms","jar","jms", + "keyparc","lastfm","ldaps","magnet","maps","market","message","mms", + "ms-help","msnim","mumble","mvn","notes","oid","palm","paparazzi", + "platform","proxy","psyc","query","res","resource","rmi","rsync", + "rtmp","secondlife","sftp","sgn","skype","smb","soldat","spotify", + "ssh","steam","svn","teamspeak","things","udp","unreal","ut2004", + "ventrilo","view-source","webcal","wtai","wyciwyg","xfire","xri", + "ymsgr"] + -- | Parses a URI. Returns pair of original and URI-escaped version. uri :: Parser [Char] st (String, String) uri = try $ do - let protocols = [ "http:", "https:", "ftp:", "file:", "mailto:", - "news:", "telnet:" ] - lookAhead $ oneOfStrings protocols - -- Scan non-ascii characters and ascii characters allowed in a URI. - -- We allow punctuation except when followed by a space, since - -- we don't want the trailing '.' in 'http://google.com.' - let innerPunct = try $ satisfy isPunctuation >>~ - notFollowedBy (newline <|> spaceChar) - let uriChar = innerPunct <|> - satisfy (\c -> not (isPunctuation c) && - (not (isAscii c) || isAllowedInURI c)) - -- We want to allow + scheme <- oneOfStrings schemes + char ':' + -- /^[\/\w\u0080-\uffff]+|%[A-Fa-f0-9]+|&#?\w+;|(?:[,]+|[\S])[%&~\w\u0080-\uffff]/ + -- We allow punctuation except at the end, since + -- we don't want the trailing '.' in 'http://google.com.' We want to allow -- http://en.wikipedia.org/wiki/State_of_emergency_(disambiguation) -- as a URL, while NOT picking up the closing paren in - -- (http://wikipedia.org) - -- So we include balanced parens in the URL. - let inParens = try $ do char '(' - res <- many uriChar - char ')' - return $ '(' : res ++ ")" - str <- liftM concat $ many1 $ inParens <|> count 1 (innerPunct <|> uriChar) + -- (http://wikipedia.org). So we include balanced parens in the URL. + let isWordChar c = isAlphaNum c || c == '_' || c == '/' || not (isAscii c) + let wordChar = satisfy isWordChar + let percentEscaped = try $ char '%' >> skipMany1 (satisfy isHexDigit) + let entity = () <$ characterReference + let punct = skipMany1 (char ',') + <|> () <$ (satisfy (not . isSpace)) + let uriChunk = skipMany1 wordChar + <|> percentEscaped + <|> entity + <|> (try $ punct >> notFollowedBy (satisfy $ not . isWordChar)) + str <- snd `fmap` withRaw (skipMany1 ( () <$ + (enclosed (char '(') (char ')') uriChunk + <|> enclosed (char '{') (char '}') uriChunk + <|> enclosed (char '[') (char ']') uriChunk) + <|> uriChunk)) str' <- option str $ char '/' >> return (str ++ "/") - -- now see if they amount to an absolute URI - case parseURI (escapeURIString isUnescapedInURI str') of - Just uri' -> if uriScheme uri' `elem` protocols - then return (str', show uri') - else fail "not a URI" - Nothing -> fail "not a URI" + let uri' = scheme ++ ":" ++ str' + return (uri', escapeURI uri') -- | Applies a parser, returns tuple of its results and its horizontal -- displacement (the difference between the source column at the end |