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vendor/yomitan/js/language/ru/russian-text-preprocessors.js

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+/*
+ * Copyright (C) 2024-2025  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/>.
+ */
+
+import {basicTextProcessorOptions} from '../text-processors.js';
+
+/** @type {import('language').TextProcessor<boolean>} */
+export const removeRussianDiacritics = {
+    name: 'Remove diacritics',
+    description: 'A\u0301 → A, a\u0301 → a',
+    options: basicTextProcessorOptions,
+    process: (str, setting) => {
+        return setting ? str.replace(/\u0301/g, '') : str;
+    },
+};
+
+/** @type {import('language').BidirectionalConversionPreprocessor} */
+export const yoToE = {
+    name: 'Convert "ё" to "е"',
+    description: 'ё → е, Ё → Е and vice versa',
+    options: ['off', 'direct', 'inverse'],
+    process: (str, setting) => {
+        switch (setting) {
+            case 'off':
+                return str;
+            case 'direct':
+                return str.replace(/ё/g, 'е').replace(/Ё/g, 'Е');
+            case 'inverse':
+                return str.replace(/е/g, 'ё').replace(/Е/g, 'Ё');
+        }
+    },
+};