ExceptionsTools.cpp

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/*
    Copyright (C) 2014-2016 Leosac
 
    This file is part of Leosac.
 
    Leosac is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    Leosac 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 Affero General Public License for more details.
 
    You should have received a copy of the GNU Affero General Public License
    along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "ExceptionsTools.hpp"
#include "tools/Colorize.hpp"
#include "tools/log.hpp"
 
namespace
{
std::string build_prepend_identation(int level)
{
    std::string prepend;
    if (level)
        prepend = '|';
    for (int i = 0; i < level; ++i)
        prepend += "--";
    if (level)
        prepend += "> ";
 
    return prepend;
}
}
 
void Leosac::print_exception(const std::exception &e, int level /* = 0 */)
{
    std::cerr << build_prepend_identation(level) << "exception: " << e.what()
              << '\n';
    try
    {
        std::rethrow_if_nested(e);
    }
    catch (const std::exception &e2)
    {
        print_exception(e2, level + 1);
    }
    catch (...)
    {
        std::cerr << "Unknown exception type." << std::endl;
    }
}
 
void Leosac::log_exception(const std::exception &e, int level /* = 0 */)
{
    ERROR(build_prepend_identation(level) << "exception: " << e.what());
    try
    {
        std::rethrow_if_nested(e);
    }
    catch (const std::exception &e2)
    {
        log_exception(e2, level + 1);
    }
    catch (...)
    {
        ERROR("Unknown exception type.");
    }
}