arabica/include/XSLT/impl/handler/xslt_value_of_handler.hpp
2012-11-15 22:03:42 +00:00

65 lines
2.2 KiB
C++

#ifndef ARABICA_XSLT_VALUE_OF_HANDLER_HPP
#define ARABICA_XSLT_VALUE_OF_HANDLER_HPP
#include <XML/XMLCharacterClasses.hpp>
#include "../xslt_value_of.hpp"
namespace Arabica
{
namespace XSLT
{
template<class string_type, class string_adaptor>
class ValueOfHandler : public SAX::DefaultHandler<string_type, string_adaptor>
{
typedef StylesheetConstant<string_type, string_adaptor> SC;
typedef AttributeValidators<string_type, string_adaptor> AV;
public:
ValueOfHandler(CompilationContext<string_type, string_adaptor>& context) :
context_(context),
valueOf_(0)
{
} // ValueOfHandler
virtual void startElement(const string_type& /* namespaceURI */,
const string_type& /* localName */,
const string_type& qName,
const SAX::Attributes<string_type, string_adaptor>& atts)
{
if(valueOf_ == 0)
{
static const AV rules = AV::rule(SC::select, true)
.rule(SC::disable_output_escaping, false, SC::no, AllowedValues<string_type>(SC::yes, SC::no));
std::map<string_type, string_type> attrs = rules.gather(qName, atts);
valueOf_ = new ValueOf<string_type, string_adaptor>(context_.xpath_expression(attrs[SC::select]),
attrs[SC::disable_output_escaping] == SC::yes);
return;
} // if(valueOf_ == 0)
throw SAX::SAXException(string_adaptor::asStdString(qName) + " can not contain elements");
} // startElement
virtual void endElement(const string_type& /* namespaceURI */,
const string_type& /* localName */,
const string_type& /* qName */)
{
context_.parentContainer().add_item(valueOf_);
context_.pop();
} // endElement
virtual void characters(const string_type& ch)
{
verifyNoCharacterData<string_type, string_adaptor>(ch, SC::value_of);
} // characters
private:
CompilationContext<string_type, string_adaptor>& context_;
ValueOf<string_type, string_adaptor>* valueOf_;
}; // class ValueOfHandler
} //namespace XSLT
} //namespace Arabica
#endif