initial commit

build/lib/futile/serializer/xml.py

@@ -0,0 +1,51 @@
+'''
+Created on 28.08.2011
+
+@author: kca
+'''
+
+from ..logging import LoggerMixin
+from logging import DEBUG
+from ..etree.impl import ElementTree, XML, ParseError as XMLParseError, XMLSyntaxError, tostring
+from abc import ABCMeta, abstractmethod
+from futile.serializer.exc import ParseError
+
+class AbstractXMLSerializer(LoggerMixin):
+	__metaclass__ = ABCMeta
+	
+	def load(self, input):		
+		if self.logger.isEnabledFor(DEBUG):
+			from cStringIO import StringIO
+			input = input.read()
+			self.logger.debug("Parsing input: %s", input)
+			input = StringIO(input)
+		root = self._load(input)
+		return self._parse_input(root)
+	
+	def _load(self, input):
+		try:
+			if isinstance(input, str):
+				return XML(input)
+			else:	
+				return ElementTree().parse(input)
+		except Exception, e:
+			self._handle_parse_error(e)
+			raise ParseError(e)
+		
+	def _handle_parse_error(self, e):
+		self.logger.exception("Error parsing input: %s", e)
+			
+	@abstractmethod
+	def _parse_input(self, root):
+		raise NotImplementedError()
+	
+	def dump(self, o, pretty_print = True):
+		raise NotImplementedError()
+	
+	def dumps(self, o, pretty_print = True):
+		xml = self._dump_object(o)
+		return tostring(xml, pretty_print = pretty_print)
+	
+	@abstractmethod
+	def _dump_object(self, o):
+		raise NotImplementedError()