lib/option_join.cc

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 2012 Peter Miller
//
// 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 2 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/>.
//

#include <lib/ac/assert.h>

#include <lib/option_join.h>


rcstring
option_join(const rcstring &lhs, const rcstring &rhs)
{
    assert(lhs.empty() || lhs[0] == '-');
    assert(rhs.empty() || rhs[0] == '-');
    if (lhs.empty())
        return rhs;
    if (rhs.empty())
        return lhs;
    return (lhs + "," + rhs.substr(1, rhs.size()));
}


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