icinga2/lib/base/convert.h

80 lines
2.5 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2013 Icinga Development Team (http://www.icinga.org/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef CONVERT_H
#define CONVERT_H
#include "base/i2-base.h"
#include "base/value.h"
#include <boost/lexical_cast.hpp>
namespace icinga
{
/**
* Utility class for converting types.
*
* @ingroup base
*/
class I2_BASE_API Convert
{
public:
template<typename T>
static long ToLong(const T& val)
{
try {
return boost::lexical_cast<long>(val);
} catch (std::exception&) {
std::ostringstream msgbuf;
msgbuf << "Can't convert '" << val << "' to an integer.";
BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
}
}
template<typename T>
static double ToDouble(const T& val)
{
try {
return boost::lexical_cast<double>(val);
} catch (std::exception&) {
std::ostringstream msgbuf;
msgbuf << "Can't convert '" << val << "' to a floating point number.";
BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
}
}
static bool ToBool(const String& val);
template<typename T>
static String ToString(const T& val)
{
return boost::lexical_cast<String>(val);
}
static String ToString(const String& val);
static String ToString(const Value& val);
private:
Convert(void);
};
}
#endif /* CONVERT_H */