Add punycode support (2.0.6)

lib/Logger.js

@@ -0,0 +1,40 @@
+const HexUtil = require('./HexUtil');
+
+class Logger {
+    constructor() {
+        this.debugEnabled = false;
+    }
+
+    debug(...args) {
+        if (!this.debugEnabled) return;
+        this._print(...args);
+    }
+
+    _print(...args) {
+        try {
+            const strings = this._convertArgsToStrings(...args);
+            console.log(...strings);
+        } catch(e) {
+            console.log("Error while logging: " + e);
+        }
+    }
+
+    _convertArgsToStrings(...args) {
+        const out = [];
+        for (const arg of args) {
+            if (arg instanceof Error) {
+                out.push(arg.stack);
+            } else if (arg instanceof Buffer) {
+                out.push("\n" + HexUtil.debugDump(arg) + "\n");
+            } else if (typeof arg == 'function') {
+                const result = arg.call(undefined, (...args) => out.push(...this._convertArgsToStrings(...args)));
+                if (result !== undefined) out.push(...this._convertArgsToStrings(result));
+            } else {
+                out.push(arg);
+            }
+        }
+        return out;
+    }
+}
+
+module.exports = Logger;