// Cppcheck - A tool for static C/C++ code analysis
// Copyright (C) 2007-2010 Daniel Marjamäki and Cppcheck team.
//
// 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 3 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, see <http://www.gnu.org/licenses/>.

#ifndef REDIRECT_H
#define REDIRECT_H

#include <iostream>

extern std::ostringstream errout;
extern std::ostringstream output;
/**
  * @brief Utility class for capturing cout and cerr to ostringstream buffers
  * for later use. Uses RAII to stop redirection when the object goes out of
  * scope.
  */
class RedirectOutputError
{
public:
    /** Set up redirection, flushing anything in the pipes. */
    RedirectOutputError()
    {
        // flush all old output
        std::cout.flush();
        std::cerr.flush();

        _oldCout = std::cout.rdbuf(); // back up cout's streambuf
        _oldCerr = std::cerr.rdbuf(); // back up cerr's streambuf

        std::cout.rdbuf(_out.rdbuf()); // assign streambuf to cout
        std::cerr.rdbuf(_err.rdbuf()); // assign streambuf to cerr
    }

    /** Revert cout and cerr behaviour */
    ~RedirectOutputError()
    {
        std::cout.rdbuf(_oldCout); // restore cout's original streambuf
        std::cerr.rdbuf(_oldCerr); // restore cerrs's original streambuf

        errout << _err.str();
        output << _out.str();
    }

private:
    std::stringstream _out;
    std::stringstream _err;
    std::streambuf* _oldCout;
    std::streambuf *_oldCerr;
};

#define REDIRECT RedirectOutputError redir;

#endif