fix security parsing

src/Transaq/Parsing.hs

@@ -25,7 +25,7 @@ module Transaq.Parsing
 import           Barbies.Bare             (Bare, Covered)
 import           Control.Applicative      (many)
 import           Control.Error.Util       (hush)
-import           Control.Exception
+import           Control.Exception        hiding (try)
 import           Control.Monad            (void, when)
 import           Control.Monad.ST         (ST, runST)
 import           Control.Monad.State      (MonadState, State, execState,
@@ -58,7 +58,7 @@ import           Text.Megaparsec          (MonadParsec (takeWhileP),
                                            Parsec (..), ParsecT, anySingle,
                                            customFailure, lookAhead, oneOf,
                                            parse, runParserT, satisfy, single,
-                                           unexpected, (<|>))
+                                           try, unexpected, (<|>))
 import           Text.Megaparsec          (optional)
 import qualified Text.Megaparsec.Error    as ME
 import           Text.Megaparsec.Stream   (Stream (..))
@@ -355,7 +355,7 @@ instance FromPartial AllTradesTradeB where
     attQuantity partial <*>
     attBuysell partial <*>
     pure (fromMaybe 0 (attOpenInterest partial)) <*>
-    attPeriod partial
+    pure (fromMaybe PeriodNormal $ attPeriod partial)
 
 type QuotePartial = Quote.QuoteB Covered Maybe
 deriving instance Eq QuotePartial
@@ -733,10 +733,15 @@ parseMarkets = do
 parseSecurities :: ParsecT String [XmlStreamEvent] (ST s) TransaqResponse
 parseSecurities = do
   void . single $ XmlOpenEnd "securities"
-  securities <- catMaybes <$> many parseSecurity
+  securities <- catMaybes <$> many (try parseSecurity <|> ignoreSecurity)
   void . single $ XmlClose "securities"
   pure . TransaqResponseSecurities . ResponseSecurities $ securities
   where
+    ignoreSecurity = do
+      void . single $ XmlOpen "security"
+      ignoreTag "security"
+      pure Nothing
+
     parseSecurity :: ParsecT String [XmlStreamEvent] (ST s) (Maybe Security)
     parseSecurity = do
       ref <- lift $ newSTRef emptyPartial
@@ -868,7 +873,7 @@ parseAllTrades = do
       many (parseTradeField ref)
       void . single $ XmlClose "trade"
       result <- lift $ readSTRef ref
-      pure . fromPartial $ result
+      pure $ fromPartial $ result
 
     parseTradeField ref = do
       openTag <- satisfy isOpenTag
@@ -1065,9 +1070,15 @@ parseTimestamp = hush . parseOnly parser
 
 parseTextTag tagname ref f = do
   void . single $ XmlOpenEnd tagname
-  (XmlText txt) <- satisfy isText
-  lift $ modifySTRef' ref (f txt)
-  void . single $ XmlClose tagname
+  x <- anySingle
+  case x of
+    (XmlText txt) -> do
+      lift $ modifySTRef' ref (f txt)
+      void . single $ XmlClose tagname
+    (XmlClose tagname) ->
+      lift $ modifySTRef' ref (f "")
+    _ -> customFailure "Invalid text tag"
+
 
 ignoreTag tagname = do
   x <- takeWhileP Nothing (/= XmlClose tagname)