Add script to check missing translations of JaLHyd messages

scripts/check-translations.js

+'use strict';
+
+const fs = require('fs');
+
+// read and transform JaLHyd message file
+const jalhydMessagesPath = "../jalhyd/src/util/message.ts";
+let jm = fs.readFileSync(jalhydMessagesPath, "utf-8");
+// extract enum block
+jm = jm.replace(/export enum MessageCode \{([^{]+)\}[\s\S]+/m, (match, p1) => {
+    return p1;
+});
+// remove comments
+jm = jm.replace(/\/\*[\s\S]*?\*\//gm, "");
+jm = jm.replace(/\/\/.+/g, "");
+
+// remove spaces
+jm = jm.replace(/[ \t]+/g, "");
+// remove line breaks
+jm = jm.replace(/\n/g, "");
+// split on ";"
+const messages = jm.split(",");
+
+// console.log(messages);
+
+// read every language file
+const localePath = "src/locale";
+const localeDir = fs.readdirSync(localePath);
+for (let i = 0; i < localeDir.length; i++) {
+    const localeFile = localeDir[i];
+    const res = localeFile.match(/^messages\.([a-z]{2})\.json$/);
+    if (res) {
+        const lang = res[1];
+        console.log("Loading translations for language [" + lang + "]");
+        const langFilePath = localePath + '/' + localeFile;
+        let translations = Object.keys(JSON.parse(fs.readFileSync(langFilePath, "utf-8")));
+        // console.log(translations);
+        // check against JaLHyd messages list
+        for (const mess of messages) {
+            if (! translations.includes(mess)) {
+                console.log("  missing message in [" + lang + "] translation: " + mess);
+            }
+        }
+    }
+}