sax: Implement method xml.sax.expatreader.ExpatParser.flush

Author: hartwork

Lib/xml/sax/expatreader.py

@@ -214,6 +214,19 @@ def feed(self, data, isFinal=False):
             # FIXME: when to invoke error()?
             self._err_handler.fatalError(exc)
 
+    def flush(self):
+        if self._parser is None:
+            return
+
+        self._parser.SetReparseDeferralEnabled(False)
+        try:
+            self._parser.Parse(b"", False)
+        except expat.error as e:
+            exc = SAXParseException(expat.ErrorString(e.code), e, self)
+            self._err_handler.fatalError(exc)
+        finally:
+            self._parser.SetReparseDeferralEnabled(True)
+
     def _close_source(self):
         source = self._source
         try: