submitted 1.2.0

XML/include/Poco/SAX/EntityResolverImpl.h

@@ -0,0 +1,100 @@
+//
+// EntityResolverImpl.h
+//
+// $Id: //poco/1.2/XML/include/Poco/SAX/EntityResolverImpl.h#1 $
+//
+// Library: XML
+// Package: SAX
+// Module:  SAX
+//
+// An implementation of EntityResolver.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#ifndef SAX_EntityResolverImpl_INCLUDED
+#define SAX_EntityResolverImpl_INCLUDED
+
+
+#include "Poco/XML/XML.h"
+#include "Poco/XML/XMLString.h"
+#include "Poco/SAX/EntityResolver.h"
+#include "Poco/URIStreamOpener.h"
+
+
+namespace Poco {
+namespace XML {
+
+
+class XML_API EntityResolverImpl: public EntityResolver
+	/// A default implementation of the EntityResolver interface.
+	///
+	/// The system ID is first interpreted as an URI and the
+	/// URIStreamOpener is used to create and open an istream
+	/// for an InputSource.
+	///
+	/// If the system ID is not a valid URI, it is
+	/// interpreted as a filesystem path and a ifstream
+	/// is opened for it.
+{
+public:
+	EntityResolverImpl();
+		/// Creates an EntityResolverImpl that uses the default
+		/// URIStreamOpener.
+		
+	EntityResolverImpl(const Poco::URIStreamOpener& opener);
+		/// Creates an EntityResolverImpl that uses the given
+		/// URIStreamOpener.
+		
+	~EntityResolverImpl();
+		/// Destroys the EntityResolverImpl.
+	
+	InputSource* resolveEntity(const XMLString* publicId, const XMLString& systemId);
+		/// Tries to use the URIStreamOpener to create and open an istream
+		/// for the given systemId, which is interpreted as an URI.
+		///
+		/// If the systemId is not a valid URI, it is interpreted as
+		/// a local filesystem path and an ifstream is opened for it.
+		
+	void releaseInputSource(InputSource* pSource);
+		/// Deletes the InputSource's stream.
+	
+protected:
+	std::istream* resolveSystemId(const XMLString& systemId);	
+	
+private:
+	EntityResolverImpl(const EntityResolverImpl&);
+	EntityResolverImpl& operator = (const EntityResolverImpl&);
+	
+	const Poco::URIStreamOpener& _opener;
+};
+
+
+} } // namespace Poco::XML
+
+
+#endif // SAX_EntityResolverImpl_INCLUDED