cirandas.net

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var fs = require("fs");
var path = require("path");

module.exports = function(grunt) {
	grunt.registerMultiTask("bundle", "Bundles code, themes and bundles to a single file.", function() {
		var options, contents, themes, plugins;

		function appendFile(src) {
			src = src.replace(/\\/g, '/');

			if (fs.existsSync(src)) {
				grunt.log.writeln("Appending file:", src);
				contents += grunt.file.read(src);
			} else {
				grunt.fail.fatal("Could not find file: " + src);
			}
		}

		function append(dirPath, fileName, value) {
			if (value) {
				value.split(/,/).forEach(function(src) {
					appendFile(path.join(dirPath, src, fileName));
				});
			}
		}

		options = grunt.config([this.name, this.target]).options;
		options.themesDir = options.themesDir || "plugins";
		options.themeFileName = options.themeFileName || "theme.min.js";
		options.pluginsDir = options.pluginsDir || "plugins";
		options.pluginFileName = options.pluginFileName || "plugin.min.js";
		options.outputPath = options.outputPath || "full.min.js";

		themes = grunt.option("themes");
		plugins = grunt.option("plugins");

		if (!themes && !plugins) {
			grunt.log.writeln("Use: grunt bundle --themes <comma separated list of themes> --plugins <comma separated list of plugins>");
			process.exit(-1);
			return;
		}

		contents = "";
		this.files.forEach(function(filePair) {
			filePair.src.forEach(function(src) {
				appendFile(src);
			});
		});

		append(options.themesDir, options.themeFileName, themes);
		append(options.pluginsDir, options.pluginFileName, plugins);

		if (contents.length > 0) {
			grunt.file.write(options.outputPath, contents);
			grunt.log.ok("Created bundle js:", options.outputPath);
		}
	});
};