78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
#ifndef RFL_XML_WRITE_HPP_
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#define RFL_XML_WRITE_HPP_
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#include <ostream>
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#include <pugixml.hpp>
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#include <sstream>
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#include <string>
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#include <type_traits>
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#include "../Processors.hpp"
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#include "../internal/StringLiteral.hpp"
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#include "../internal/get_type_name.hpp"
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#include "../internal/remove_namespaces.hpp"
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#include "../parsing/Parent.hpp"
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#include "Parser.hpp"
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namespace rfl {
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namespace xml {
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template <internal::StringLiteral _root, class T>
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consteval auto get_root_name() {
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if constexpr (_root != internal::StringLiteral("")) {
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return _root;
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} else {
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return internal::remove_namespaces<
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internal::get_type_name<std::remove_cvref_t<T>>()>();
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}
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}
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/// Writes a XML into an ostream.
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template <internal::StringLiteral _root = internal::StringLiteral(""),
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class... Ps>
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std::ostream& write(const auto& _obj,
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std::ostream& _stream,
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const std::string& _indent = " ") {
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using T = std::remove_cvref_t<decltype(_obj)>;
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using ParentType = parsing::Parent<Writer>;
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constexpr auto root_name = get_root_name<_root, T>();
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static_assert(
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root_name.string_view().find("<") == std::string_view::npos &&
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root_name.string_view().find(">") == std::string_view::npos,
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"The name of an XML root node cannot contain '<' or '>'. "
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"Please assign an "
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"explicit root name to rfl::xml::write(...) like this: "
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"rfl::xml::write<\"root_name\">(...).");
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const auto doc = rfl::Ref<pugi::xml_document>::make();
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auto declaration_node = doc->append_child(pugi::node_declaration);
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declaration_node.append_attribute("version") = "1.0";
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declaration_node.append_attribute("encoding") = "UTF-8";
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auto w = Writer(doc, root_name.str());
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Parser<T, Processors<Ps...>>::write(w, _obj,
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typename ParentType::Root {});
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doc->save(_stream, _indent.c_str());
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return _stream;
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}
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/// Returns a XML string.
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template <internal::StringLiteral _root = internal::StringLiteral(""),
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class... Ps>
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std::string write(const auto& _obj, const std::string& _indent = " ") {
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std::stringstream stream;
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write<_root, Ps...>(_obj, stream);
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return stream.str();
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}
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} // namespace xml
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} // namespace rfl
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#endif // XML_PARSER_HPP_
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