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/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2006, 2007 Ciaran McCreesh
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis 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., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <exception>
#include <paludis/util/attributes.hh>
#include <paludis/util/exception.hh>
#include <paludis/util/log.hh>
#include <paludis/util/stringify.hh>
#include <paludis/util/system.hh>
#include <sstream>
#include <fcntl.h>
#include <test/test_framework.hh>

/** \file
 * Some extras, for test cases.
 *
 */

using namespace paludis;

namespace
{
    std::string verbose_exception_to_debug_string(
            const std::exception & e) PALUDIS_ATTRIBUTE((noinline));

    struct C
    {
        /* icky hack: don't bother destructing s, it makes log assplode */
        std::stringstream * s;
        int dev_null_pid;

        C() :
            s(new std::stringstream),
            dev_null_pid(open("/dev/stderr", O_RDONLY))
        {
            test::set_exception_to_debug_string(&verbose_exception_to_debug_string);

            if (getenv_with_default("PALUDIS_TESTS_KEEP_STDERR", "").empty())
                set_run_command_stderr_fds(dev_null_pid, -1);

            if (getenv_with_default("PALUDIS_TESTS_KEEP_LOG", "").empty())
                Log::get_instance()->set_log_stream(s);

            if (getenv_with_default("PALUDIS_TESTS_NO_DEBUG_LOG", "").empty())
                Log::get_instance()->set_log_level(ll_debug);
        }
    };

    static const C my_c;

    std::string verbose_exception_to_debug_string(const std::exception & e)
    {
        const paludis::Exception * ee;
        if (0 != ((ee = dynamic_cast<const Exception *>(&e))))
            return stringify(ee->what()) + " (message " + ee->message() +
                (ee->empty() ? std::string(", no backtrace") :
                 ", backtrace " + ee->backtrace(" -> ")) + ")";
        else
            return e.what();
    }
}