mirror of
https://github.com/jezhiggins/arabica
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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
#ifndef ARABICA_XSLT_NAMESPACE_STACK_HPP
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#define ARABICA_XSLT_NAMESPACE_STACK_HPP
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#include <map>
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#include <vector>
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#include "handler/xslt_constants.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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template<class string_type, class string_adaptor>
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class NamespaceStack
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{
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typedef StylesheetConstant<string_type, string_adaptor> SC;
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public:
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typedef std::map<string_type, string_type> Scope;
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NamespaceStack() :
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autoNs_(1)
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{
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prefixStack_.push_back(Scope());
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uriStack_.push_back(Scope());
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} // NamespaceStack
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void pushScope()
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{
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prefixStack_.push_back(Scope());
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uriStack_.push_back(Scope());
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} // pushScope
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void popScope()
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{
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prefixStack_.pop_back();
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uriStack_.pop_back();
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} // popScope
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void declareNamespace(const string_type& given_prefix, const string_type& namespaceURI, bool attr = false)
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{
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if(findPrefix(namespaceURI) != EMPTY_STRING)
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return;
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bool remap = (attr && string_adaptor::empty(given_prefix)) || (given_prefix == SC::xmlns);
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string_type prefix = !remap ? given_prefix : autoNamespacePrefix();
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prefixStack_.back()[prefix] = namespaceURI;
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uriStack_.back()[namespaceURI] = prefix;
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} // declareNamespace
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const string_type& findURI(const string_type& prefix) const
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{
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return searchStack(prefixStack_, prefix);
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} // findURI
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const string_type& findPrefix(const string_type& uri) const
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{
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return searchStack(uriStack_, uri);
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} // findPrefix
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typename Scope::const_iterator begin() { return prefixStack_.back().begin(); }
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typename Scope::const_iterator end() { return prefixStack_.back().end(); }
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private:
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typedef std::vector<Scope> ScopeStack;
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const string_type& searchStack(const ScopeStack& stack, const string_type& key) const
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{
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for(typename ScopeStack::const_reverse_iterator ss = stack.rbegin(), se = stack.rend(); ss != se; ss++)
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{
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typename Scope::const_iterator i = ss->find(key);
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if(i != ss->end())
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return i->second;
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}
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return EMPTY_STRING;
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} // searchStack
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string_type autoNamespacePrefix()
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{
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std::basic_ostringstream<typename string_adaptor::value_type> ss;
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ss << SC::auto_ns << autoNs_++;
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return string_adaptor::construct(ss.str());
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} // autoNamespacePrefix
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ScopeStack prefixStack_;
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ScopeStack uriStack_;
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string_type EMPTY_STRING;
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unsigned int autoNs_;
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}; // class NamespaceStack
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} // namespace XSLT
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} // namespace Arabica
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#endif // ARABICA_XSLT_NAMESPACE_STACK_HPP
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