node-gulp-named-log/lib/index.js

'use strict';

var path = require("path");
var chalk = require("chalk");
var spy = require("through2-spy");
var fancyLog = require("fancy-log");

var padWidth = 5;

var typeColors = {
	error: "red",
	warn: "yellow",
	info: "cyan",
	debug: "gray"
};

function hexify(buff) {
	var bytes = [];

	for (var i = 0; i < buff.length; i++) {
		bytes.push(buff.toString("hex", i, i + 1));
	}

	return bytes;
}

module.exports = function namedLog(name) {
	var options = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

	var prefix = "[" + chalk.green(name) + "]";

	function createLog(type) {
		var prefixes = [prefix];

		if (type) {
			var typeColor = typeColors[type] != null ? typeColors[type] : "white";
			var typePrefix = "[" + chalk[typeColor](type) + "]";

			prefixes.push(typePrefix);
		}

		return function log() {
			for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
				args[_key] = arguments[_key];
			}

			fancyLog.apply(null, prefixes.concat(args));
		};
	}

	return {
		debug: createLog("debug"),
		info: createLog("info"),
		warn: createLog("warn"),
		error: createLog("error"),
		log: createLog(),
		stream: function stream() {
			var _this = this;

			return spy.obj(function (file) {
				var shortPath = void 0,
				    firstBytes = void 0,
				    suffix = void 0;

				var byteLimit = options.byteLimit != null ? options.byteLimit : 20;

				if (options.basePath != null) {
					shortPath = path.relative(options.basePath, file.path);
				} else {
					shortPath = path.basename(file.path);
				}

				if (file.contents.length <= byteLimit) {
					firstBytes = file.contents;
					suffix = "";
				} else {
					firstBytes = file.contents.slice(0, byteLimit);
					suffix = " ...";
				}

				_this.info("<File \"" + shortPath + ">\" <Buffer " + hexify(firstBytes).join(" ") + " " + suffix + " >>");
			});
		}
	};
};