47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
const HexUtil = require('./HexUtil');
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class Logger {
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constructor() {
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this.debugEnabled = false;
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this.prefix = '';
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}
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debug(...args) {
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if (!this.debugEnabled) return;
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this._print(...args);
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}
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_print(...args) {
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try {
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const strings = this._convertArgsToStrings(...args);
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if (strings.length) {
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if (this.prefix) {
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strings.unshift(this.prefix);
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}
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console.log(...strings);
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}
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} catch(e) {
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console.log("Error while logging: " + e);
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}
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}
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_convertArgsToStrings(...args) {
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const out = [];
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for (const arg of args) {
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if (arg instanceof Error) {
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out.push(arg.stack);
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} else if (arg instanceof Buffer) {
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out.push(HexUtil.debugDump(arg));
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} else if (typeof arg == 'function') {
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const result = arg.call(undefined, (...args) => this._print(...args));
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if (result !== undefined) out.push(...this._convertArgsToStrings(result));
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} else {
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out.push(arg);
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}
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}
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return out;
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}
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}
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module.exports = Logger;
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