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85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/*
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* XmlReader.hpp, part of LatAnalyze 3
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*
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* Copyright (C) 2013 - 2014 Antonin Portelli
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*
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* LatAnalyze 3 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LatAnalyze 3 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef Latan_XmlReader_hpp_
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#define Latan_XmlReader_hpp_
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#include <LatAnalyze/Global.hpp>
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#include <LatAnalyze/XML/tinyxml2.hpp>
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#include <iostream>
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BEGIN_NAMESPACE
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/******************************************************************************
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* XML parameter file reader *
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******************************************************************************/
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class XmlReader
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{
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public:
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// constructor
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XmlReader(void) = default;
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explicit XmlReader(const std::string &fileName);
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// destructor
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virtual ~XmlReader(void) = default;
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// IO
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template <typename T, typename... Strs>
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T getFirstValue(const std::string &nodeName, Strs... nodeNames);
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void open(const std::string &fileName);
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private:
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std::string name_;
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tinyxml2::XMLDocument doc_;
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tinyxml2::XMLElement *root_{nullptr};
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};
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/******************************************************************************
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* XmlReader template implementation *
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******************************************************************************/
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template <typename T, typename... Strs>
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T XmlReader::getFirstValue(const std::string &nodeName, Strs... nodeNames)
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{
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static_assert(static_or<std::is_assignable<std::string, Strs>::value...>::value,
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"getFirstValue arguments are not compatible with std::string");
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const unsigned int nName = sizeof...(nodeNames) + 1;
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const std::string name[] = {nodeName, nodeNames...};
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tinyxml2::XMLElement *node = root_;
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if (!root_)
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{
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LATAN_ERROR(Io, "no XML file opened");
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}
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//std::cout << "root: " << name[i] << " ";
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for (unsigned int i = 0; i < nName; ++i)
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{
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//std::cout << i << ": " << name[i] << " ";
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node = node->FirstChildElement(name[i].c_str());
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// std::cout <<
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if (!node)
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{
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LATAN_ERROR(Parsing, "XML node " + name[i] + " not found");
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}
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}
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return strTo<T>(node->GetText());
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}
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END_NAMESPACE
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#endif // Latan_XmlReader_hpp_
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