mirror of
https://github.com/jezhiggins/arabica
synced 2024-12-29 22:23:27 +01:00
108 lines
3.8 KiB
C++
108 lines
3.8 KiB
C++
#ifndef ARABICA_XSLT_FUNCTIONS_HPP
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#define ARABICA_XSLT_FUNCTIONS_HPP
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#include <DOM/SAX2DOM/SAX2DOM.hpp>
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#include <SAX/helpers/CatchErrorHandler.hpp>
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namespace Arabica
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{
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namespace XSLT
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{
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// node-set current()
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class CurrentFunction : public Arabica::XPath::XPathFunction<std::string>
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{
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typedef Arabica::XPath::XPathFunction<std::string> baseT;
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public:
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CurrentFunction(const std::vector<Arabica::XPath::XPathExpressionPtr<std::string> >& args) :
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Arabica::XPath::XPathFunction<std::string>(0, 0, args) { }
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virtual Arabica::XPath::XPathValue_impl<std::string>* evaluate(const DOM::Node<std::string>& context,
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const Arabica::XPath::ExecutionContext<std::string>& executionContext) const
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{
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Arabica::XPath::NodeSet<std::string> set;
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set.push_back(executionContext.currentNode());
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return new Arabica::XPath::NodeSetValue<std::string>(set);
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} // evaluate
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}; // CurrentFunction
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// node-set document(object, node-set?)
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class DocumentFunction : public Arabica::XPath::XPathFunction<std::string>
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{
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typedef Arabica::XPath::XPathFunction<std::string> baseT;
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public:
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DocumentFunction(const std::string& currentBase,
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const std::vector<Arabica::XPath::XPathExpressionPtr<std::string> >& args) :
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Arabica::XPath::XPathFunction<std::string>(1, 2, args),
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baseURI_(currentBase)
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{ }
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virtual Arabica::XPath::XPathValue_impl<std::string>* evaluate(const DOM::Node<std::string>& context,
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const Arabica::XPath::ExecutionContext<std::string>& executionContext) const
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{
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Arabica::XPath::NodeSet<std::string> nodes;
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Arabica::XPath::XPathValuePtr<std::string> a1 = arg(0, context, executionContext);
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if(a1->type() != Arabica::XPath::NODE_SET)
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load_document(a1->asString(), nodes);
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else
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throw Arabica::XPath::UnsupportedException("node-set arg version of document()");
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return new Arabica::XPath::NodeSetValue<std::string>(nodes);
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} // evaluate
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private:
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void load_document(const std::string& location,
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Arabica::XPath::NodeSet<std::string>& nodes) const
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{
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SAX2DOM::Parser<std::string> domParser;
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SAX::CatchErrorHandler<std::string> eh;
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domParser.setErrorHandler(eh);
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Arabica::io::URI base(baseURI_);
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Arabica::io::URI absolute(base, location);
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SAX::InputSource<std::string> is(absolute.as_string());
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domParser.parse(is);
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if(!eh.errorsReported())
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nodes.push_back(domParser.getDocument());
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else
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std::cerr << eh.errors() << std::endl;
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} // load_document
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std::string baseURI_;
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}; // DocumentFunction
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// object system-property(string)
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class SystemPropertyFunction : public Arabica::XPath::XPathFunction<std::string>
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{
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typedef Arabica::XPath::XPathFunction<std::string> baseT;
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public:
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SystemPropertyFunction (const std::vector<Arabica::XPath::XPathExpressionPtr<std::string> >& args) :
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Arabica::XPath::XPathFunction<std::string>(1, 1, args) { }
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virtual Arabica::XPath::XPathValue_impl<std::string>* evaluate(const DOM::Node<std::string>& context,
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const Arabica::XPath::ExecutionContext<std::string>& executionContext) const
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{
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std::string property = baseT::argAsString(0, context, executionContext);
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std::string result;
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if(property == "xsl:version")
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result = "1.0";
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else if(property == "xsl:vendor")
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result = "Jez Higgins, Jez UK Ltd";
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else if(property == "xsl:vendor-url")
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result = "http://www.jezuk.co.uk/arabica";
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return new Arabica::XPath::StringValue<std::string>(result);
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} // evaluate
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}; // SystemPropertyFunction
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} // namespace XSLT
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} // namespace Arabica
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#endif // ARABICA_XSLT_FUNCTIONS_HPP
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