Introduce processor

src/build/i18n.ts

@@ -0,0 +1,57 @@
+/**
+ * Replace i18n texts
+ */
+
+import locale from '../../locales';
+
+export default class Replacer {
+	private lang: string;
+
+	public pattern = /"%i18n:(.+?)%"|'%i18n:(.+?)%'|%i18n:(.+?)%/g;
+
+	constructor(lang: string) {
+		this.lang = lang;
+
+		this.get = this.get.bind(this);
+		this.replacement = this.replacement.bind(this);
+	}
+
+	private get(key: string) {
+		const texts = locale[this.lang];
+
+		if (texts == null) {
+			console.warn(`lang '${this.lang}' is not supported`);
+			return key; // Fallback
+		}
+
+		let text = texts;
+
+		// Check the key existance
+		const error = key.split('.').some(k => {
+			if (text.hasOwnProperty(k)) {
+				text = text[k];
+				return false;
+			} else {
+				return true;
+			}
+		});
+
+		if (error) {
+			console.warn(`key '${key}' not found in '${this.lang}'`);
+			return key; // Fallback
+		} else {
+			return text;
+		}
+	}
+
+	public replacement(match, a, b, c) {
+		const key = a || b || c;
+		if (match[0] == '"') {
+			return '"' + this.get(key).replace(/"/g, '\\"') + '"';
+		} else if (match[0] == "'") {
+			return '\'' + this.get(key).replace(/'/g, '\\\'') + '\'';
+		} else {
+			return this.get(key);
+		}
+	}
+}