refactor: update to recent changes in translator

src/app/translation/thing-translate.parser.ts

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2020-2021 StApps
+ * 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, version 3.
+ *
+ * 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 {Injectable} from '@angular/core';
+
+// tslint:disable: member-ordering prefer-function-over-method completed-docs
+
+export abstract class ThingTranslateParser {
+  /**
+   * Gets a value from an object by composed key
+   * parser.getValue({ key1: { keyA: 'valueI' }}, 'key1.keyA') ==> 'valueI'
+   */
+  abstract getValue(target: unknown, key: string): string;
+
+  /**
+   * TODO
+   */
+  abstract getValueFromKeyPath(instance: object, keypath: string): unknown;
+}
+
+@Injectable()
+export class ThingTranslateDefaultParser extends ThingTranslateParser {
+
+  /**
+   * TODO
+   *
+   */
+  getValue(target: unknown, key: string): string {
+    const keys = typeof key === 'string' ? key.split('.') : [key];
+    let aKey = '';
+    // tslint:disable-next-line: no-any
+    let newTarget = target as any;
+    do {
+      aKey += keys.shift();
+      if (isDefined(newTarget) && isDefined(newTarget[aKey]) && (typeof newTarget[aKey] === 'object' || keys.length === 0)) {
+        newTarget = newTarget[aKey];
+        aKey = '';
+      } else if (keys.length === 0) {
+        newTarget = undefined;
+      } else {
+        aKey += '.';
+      }
+    } while (keys.length > 0);
+
+    return newTarget;
+  }
+
+
+  getValueFromKeyPath(instance: object, keypath: string): unknown {
+    // keypath = aproperty[0].anotherproperty["arrayproperty"][42].finalproperty
+    let path = keypath.replace(/(?:\"|\')'"/gmi, '');
+    // path = aproperty[0].anotherproperty[.arrayproperty.][42].finalproperty
+    path = path.replace(/(?:\[|\])/gmi, '.');
+    // path = aproperty.0..anotherproperty..arrayproperty...42..finalproperty
+    path = path.replace(/\.{2,}/gmi, '.');
+    // path = aproperty.0.anotherproperty.arrayproperty.42.finalproperty
+
+    const keypathChain = keypath.split('.');
+
+    // tslint:disable-next-line: no-any
+    let property = instance as any;
+
+    for(const key of keypathChain) {
+      property = property[key] ?? undefined;
+    }
+
+    return property;
+  }
+}
+
+// tslint:disable-next-line: no-any
+export function isDefined(value: any): boolean {
+  return typeof value !== 'undefined' && value !== null;
+}