add apostrophe preprocessor

<rikaitan.link>MDk1ZDY5NmQwYzRmMzIxMDYyZGM4Y2I5NTExOWRmNmY0ZDUwNGMwMAo=</rikaitan.link>

.eslintrc.json

@@ -638,6 +638,7 @@
                 "ext/js/language/de/german-transforms.js",
                 "ext/js/language/en/english-transforms.js",
                 "ext/js/language/es/spanish-transforms.js",
+                "ext/js/language/fr/french-text-preprocessors.js",
                 "ext/js/language/ja/japanese-text-preprocessors.js",
                 "ext/js/language/ja/japanese-transforms.js",
                 "ext/js/language/ja/japanese-wanakana.js",

ext/js/language/fr/french-text-preprocessors.js

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2024  Ajatt-Tools and contributors
+ *
+ * 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 apostropheVariants = {
+    name: 'Search for apostrophe variants',
+    description: '\' → ’ and vice versa',
+    options: ['off', 'direct', 'inverse'],
+    process: (str, setting) => {
+        switch (setting) {
+            case 'off':
+                return str;
+            case 'direct':
+                return str.replace(/'/g, '’');
+            case 'inverse':
+                return str.replace(/’/g, '\'');
+        }
+    },
+};

ext/js/language/language-descriptors.js

@@ -21,6 +21,7 @@ import {eszettPreprocessor} from './de/german-text-preprocessors.js';
 import {germanTransforms} from './de/german-transforms.js';
 import {englishTransforms} from './en/english-transforms.js';
 import {spanishTransforms} from './es/spanish-transforms.js';
+import {apostropheVariants} from './fr/french-text-preprocessors.js';
 import {
     alphabeticToHiragana,
     alphanumericWidthVariants,
@@ -138,7 +139,10 @@ const languageDescriptors = [
         iso639_3: 'fra',
         name: 'French',
         exampleText: 'lire',
-        textPreprocessors: capitalizationPreprocessors,
+        textPreprocessors: {
+            ...capitalizationPreprocessors,
+            apostropheVariants,
+        },
     },
     {
         iso: 'grc',

types/ext/language-descriptors.d.ts

@@ -108,7 +108,9 @@ type AllTextProcessors = {
         pre: CapitalizationPreprocessors;
     };
     fr: {
-        pre: CapitalizationPreprocessors;
+        pre: CapitalizationPreprocessors & {
+            apostropheVariants: BidirectionalConversionPreprocessor;
+        };
     };
     grc: {
         pre: CapitalizationPreprocessors & AlphabeticDiacriticsProcessor;