lib/rcstring/quote_c.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/ctype.h>

#include <lib/rcstring/accumulator.h>


rcstring
rcstring::quote_c(void)
    const
{
    rcstring_accumulator acc;
    acc.push_back('"');
    const char *cp = c_str();
    for (;;)
    {
        unsigned char c = *cp++;
        switch (c)
        {
        case '\0':
            acc.push_back('"');
            return acc.mkstr();

        case '\\':
            acc.push_back("\\\\");
            break;

        case '"':
            acc.push_back("\\\"");
            break;

        case '\a':
            acc.push_back("\\a");
            break;

        case '\b':
            acc.push_back("\\b");
            break;

        case '\f':
            acc.push_back("\\f");
            break;

        case '\n':
            acc.push_back("\\n");
            break;

        case '\r':
            acc.push_back("\\r");
            break;

        case '\t':
            acc.push_back("\\t");
            break;

        case '\v':
            acc.push_back("\\v");
            break;

        default:
            if (isprint(c))
                acc.push_back(c);
            else
            {
                acc.push_back('\\');
                acc.push_back((unsigned char)('0' + (c >> 6)));
                acc.push_back((unsigned char)('0' + ((c >> 3) & 7)));
                acc.push_back((unsigned char)('0' + (c & 7)));
            }
            break;
        }
    }
}


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