/*
 * Copyright 2011,2013 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio 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, or (at your option)
 * any later version.
 *
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#include <gnuradio/sys_paths.h>
#include <cstdio>  //P_tmpdir (maybe)
#include <cstdlib> //getenv

#include <boost/filesystem/path.hpp>

namespace gr {

const char* tmp_path()
{
    const char* path;

    // first case, try TMP environment variable
    path = getenv("TMP");
    if (path)
        return path;

// second case, try P_tmpdir when its defined
#ifdef P_tmpdir
    if (P_tmpdir)
        return P_tmpdir;
#endif /*P_tmpdir*/

    // fall-through case, nothing worked
    return "/tmp";
}

const char* appdata_path()
{
    const char* path;

    // first case, try HOME environment variable (unix)
    path = getenv("HOME");
    if (path)
        return path;

    // second case, try APPDATA environment variable (windows)
    path = getenv("APPDATA");
    if (path)
        return path;

    // fall-through case, nothing worked
    return tmp_path();
}

std::string __userconf_path()
{
    boost::filesystem::path p(appdata_path());
    p = p / ".gnuradio";
    return p.string();
}

const char* userconf_path()
{
    static std::string p(__userconf_path());
    return p.c_str();
}

} /* namespace gr */
