util.hh

/*
 *          ClickOS Control
 *
 *   file: util.hh
 *
 *          NEC Europe Ltd. PROPRIETARY INFORMATION
 *
 * This software is supplied under the terms of a license agreement
 * or nondisclosure agreement with NEC Europe Ltd. and may not be
 * copied or disclosed except in accordance with the terms of that
 * agreement. The software and its source code contain valuable trade
 * secrets and confidential information which have to be maintained in
 * confidence.
 * Any unauthorized publication, transfer to third parties or duplication
 * of the object or source code - either totally or in part – is
 * prohibited.
 *
 *      Copyright (c) 2016 NEC Europe Ltd. All Rights Reserved.
 *
 * Authors: Filipe Manco <filipe.manco@neclab.eu>
 *
 * NEC Europe Ltd. DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE AND THE WARRANTY AGAINST LATENT
 * DEFECTS, WITH RESPECT TO THE PROGRAM AND THE ACCOMPANYING
 * DOCUMENTATION.
 *
 * No Liability For Consequential Damages IN NO EVENT SHALL NEC Europe
 * Ltd., NEC Corporation OR ANY OF ITS SUBSIDIARIES BE LIABLE FOR ANY
 * DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS
 * OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF INFORMATION, OR
 * OTHER PECUNIARY LOSS AND INDIRECT, CONSEQUENTIAL, INCIDENTAL,
 * ECONOMIC OR PUNITIVE DAMAGES) ARISING OUT OF THE USE OF OR INABILITY
 * TO USE THIS PROGRAM, EVEN IF NEC Europe Ltd. HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 *     THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
 */

#ifndef __UTIL__HH__
#define __UTIL__HH__

#include <limits>
#include <string>
#include <stdexcept>


namespace clickos {

template<typename int_t>
int get_int(const std::string arg, int_t& number)
{
    long long n;

    try {
        n = std::stoll(arg.c_str());
    } catch(std::invalid_argument e) {
        return EINVAL;
    } catch(std::out_of_range e) {
        return EINVAL;
    }

    if (n < std::numeric_limits<int_t>::min() || n > std::numeric_limits<int_t>::max()) {
        return EINVAL;
    }

    number = static_cast<int_t>(n);

    return 0;
}

int read_click_config(const std::string& path, std::string& config);

void basename(const std::string& path, std::string& name);

} /* namespace clickos */

#endif /*  __UTIL__HH__ */