mirror of
https://github.com/Icinga/icinga2.git
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97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2018 Icinga Development Team (https://www.icinga.com/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program 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 this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#ifndef CONVERT_H
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#define CONVERT_H
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#include "base/i2-base.hpp"
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#include "base/value.hpp"
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#include <boost/lexical_cast.hpp>
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namespace icinga
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{
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/**
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* Utility class for converting types.
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*
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* @ingroup base
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*/
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class Convert
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{
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public:
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template<typename T>
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static long ToLong(const T& val)
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{
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try {
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return boost::lexical_cast<long>(val);
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} catch (const std::exception&) {
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std::ostringstream msgbuf;
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msgbuf << "Can't convert '" << val << "' to an integer.";
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BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
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}
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}
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template<typename T>
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static double ToDouble(const T& val)
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{
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try {
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return boost::lexical_cast<double>(val);
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} catch (const std::exception&) {
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std::ostringstream msgbuf;
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msgbuf << "Can't convert '" << val << "' to a floating point number.";
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BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
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}
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}
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static long ToLong(const Value& val)
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{
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return val;
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}
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static double ToDouble(const Value& val)
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{
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return val;
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}
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static bool ToBool(const Value& val)
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{
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return val.ToBool();
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}
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template<typename T>
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static String ToString(const T& val)
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{
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return boost::lexical_cast<std::string>(val);
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}
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static String ToString(const String& val);
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static String ToString(const Value& val);
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static String ToString(double val);
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static double ToDateTimeValue(double val);
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static double ToDateTimeValue(const Value& val);
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private:
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Convert();
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};
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}
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#endif /* CONVERT_H */
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