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/*
* Copyright (C) 2022 Matthieu Gautier <mgautier@kymeria.fr>
*
* 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
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. 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 ZIM_TOOLS_H
#define ZIM_TOOLS_H
#include "zim.h"
#include <sstream>
namespace zim {
#if defined(LIBZIM_WITH_XAPIAN)
/** Helper function to set the icu data directory.
*
* On Android, we compile ICU without data integrated
* in the library. So android application needs to set
* the data directory where ICU can find its data.
*/
LIBZIM_API void setICUDataDirectory(const std::string& path);
#endif
/**
* @brief Stringstream Class to use itself as the stream object
* returned by << operator. (std::stringstream returns an std::ostream).
* Allows a one-line stringstream to str conversion, e.g. use_str(Formatter()
* << "foo" << variable);
*
*/
class Formatter
{
public:
Formatter() {}
~Formatter() {}
template <typename Type> Formatter &operator<<(const Type &value)
{
stream_ << value;
return *this;
}
/* Operator for function templates like std::endl */
Formatter &operator<<(std::ostream& (* __pf)(std::ostream&))
{
stream_ << __pf;
return *this;
}
/* Operator for working with other ostream like std::cerr */
friend std::ostream &operator<<(std::ostream &os, const Formatter &obj)
{
os << obj.stream_.str();
return os;
}
operator std::string() const { return stream_.str(); }
private:
/* Disable copy and assignment constructors */
Formatter(const Formatter &) = delete;
Formatter &operator=(Formatter &) = delete;
/* Simple composition with std::stringstream */
std::stringstream stream_;
};
}
#endif // ZIM_TOOLS_H
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