File: boolean.c

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libexplain 1.4.D001-16
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/*
 * libexplain - Explain errno values returned by libc functions
 * Copyright (C) 2009 Peter Miller
 * Written by Peter Miller <pmiller@opensource.org.au>
 *
 * 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 3 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 <libexplain/ac/stdlib.h>
#include <libexplain/ac/string.h>

#include <libexplain/sizeof.h>

#include <codegen/boolean.h>


int
string_to_boolean(const char *text)
{
    typedef struct table_t table_t;
    struct table_t
    {
        const char      *name;
        int             value;
    };

    static const table_t table[] =
    {
        { "true", 1 },
        { "false", 0 },
        { "yes", 1 },
        { "no", 0 },
    };

    const table_t   *tp;

    for (tp = table; tp < ENDOF(table); ++tp)
    {
        if (0 == strcasecmp(tp->name, text))
            return tp->value;
    }
    return !!strtol(text, 0, 0);
}


const char *
boolean_to_string(int value)
{
    return (value ? "true" : "false");
}