arabica/include/XSLT/impl/handler/xslt_namespace_alias_handler.hpp
2008-08-08 22:45:53 +01:00

78 lines
2.6 KiB
C++

#ifndef ARABICA_XSLT_NAMESPACE_ALIAS_HANDLER_HPP
#define ARABICA_XSLT_NAMESPACE_ALIAS_HANDLER_HPP
#include <XML/XMLCharacterClasses.hpp>
namespace Arabica
{
namespace XSLT
{
class NamespaceAliasHandler : public SAX::DefaultHandler<std::string>
{
public:
NamespaceAliasHandler(CompilationContext& context) :
context_(context),
done_(false)
{
} // NamespaceAliasHandler
virtual void startElement(const std::string& namespaceURI,
const std::string& localName,
const std::string& qName,
const SAX::Attributes<std::string>& atts)
{
if(!done_)
{
static const ValueRule rules[] = { { "stylesheet-prefix", true, 0 },
{ "result-prefix", true, 0 },
{ 0, false, 0} };
std::map<std::string, std::string> attrs = gatherAttributes(qName, atts, rules);
std::string stylesheet_prefix = attrs["stylesheet-prefix"];
std::string result_prefix = attrs["result-prefix"];
if(stylesheet_prefix == "#default")
stylesheet_prefix = "";
if(result_prefix == "#default")
result_prefix = "";
std::map<std::string, std::string> namespaces = context_.inScopeNamespaces();
if((namespaces.find(stylesheet_prefix) == namespaces.end()) &&
(!stylesheet_prefix.empty()))
throw SAX::SAXException("xslt:namespace-alias " + stylesheet_prefix + " is not a declared namespace prefix");
if((namespaces.find(result_prefix) == namespaces.end()) &&
(!result_prefix.empty()))
throw SAX::SAXException("xslt:namespace-alias " + result_prefix + " is not a declared namespace prefix");
context_.addNamespaceAlias(namespaces[stylesheet_prefix], result_prefix, namespaces[result_prefix]);
return;
} // if(!done_)
throw SAX::SAXException(qName + " can not contain elements");
} // startElement
virtual void endElement(const std::string& namespaceURI,
const std::string& localName,
const std::string& qName)
{
context_.pop();
} // endElement
virtual void characters(const std::string& ch)
{
for(std::string::const_iterator i = ch.begin(), e = ch.end(); i != e; ++i)
if(!Arabica::XML::is_space(*i))
throw SAX::SAXException("xsl:namespace-alias element must be empty");
} // characters
private:
CompilationContext& context_;
bool done_;
}; // class NamespaceAliasHandler
} //namespace XSLT
} //namespace Arabica
#endif