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/*
 * Copyright (C) 2024  Yomitan Authors
 *
 * 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 <https://www.gnu.org/licenses/>.
 */


/** @type {import('language').BidirectionalConversionPreprocessor} */
export const eszettPreprocessor = {
    name: 'Convert "ß" to "ss"',
    description: 'ß → ss, ẞ → SS and vice versa',
    options: ['off', 'direct', 'inverse'],
    process: (str, setting) => {
        switch (setting) {
            case 'off':
                return str;
            case 'direct':
                return str.replace(/ẞ/g, 'SS').replace(/ß/g, 'ss');
            case 'inverse':
                return str.replace(/SS/g, 'ẞ').replace(/ss/g, 'ß');
        }
    },
};