[dev] 0.0.x

bower.json

+{
+	"name": "microplugin",
+	"keywords": ["extensibility","plugins","architecture","require","dependencies"],
+	"description": "A lightweight plugin / dependency system for javascript libraries.",
+	"version": "0.0.3",
+	"license": "Apache License, Version 2.0",
+	"readmeFilename": "README.md",
+	"repository": {
+		"type": "git",
+		"url": "git://github.com/brianreavis/microplugin.js.git"
+	},
+	"main": [
+		"src/microplugin.js"
+	],
+	"ignore": [
+		"Makefile",
+		"test",
+		".travis.yml",
+		".npmignore.yml"
+	],
+	"dependencies": {}
+}

src/microplugin.js

+/**
+ * microplugin.js
+ * Copyright (c) 2013 Brian Reavis & contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the License at:
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+ * ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ *
+ * @author Brian Reavis <brian@thirdroute.com>
+ */
+
+(function(root, factory) {
+	if (typeof define === 'function' && define.amd) {
+		define(factory);
+	} else if (typeof exports === 'object') {
+		module.exports = factory();
+	} else {
+		root.MicroPlugin = factory();
+	}
+}(this, function() {
+	var MicroPlugin = {};
+
+	MicroPlugin.mixin = function(Interface) {
+		Interface.plugins = {};
+
+		/**
+		 * Initializes the listed plugins (with options).
+		 * Acceptable formats:
+		 *
+		 * List (without options):
+		 *   ['a', 'b', 'c']
+		 *
+		 * List (with options):
+		 *   [{'name': 'a', options: {}}, {'name': 'b', options: {}}]
+		 *
+		 * Hash (with options):
+		 *   {'a': { ... }, 'b': { ... }, 'c': { ... }}
+		 *
+		 * @param {mixed} plugins
+		 */
+		Interface.prototype.initializePlugins = function(plugins) {
+			var i, n, key;
+			var self  = this;
+			var queue = [];
+
+			self.plugins = {
+				names     : [],
+				settings  : {},
+				requested : {},
+				loaded    : {}
+			};
+
+			if (utils.isArray(plugins)) {
+				for (i = 0, n = plugins.length; i < n; i++) {
+					if (typeof plugins[i] === 'string') {
+						queue.push(plugins[i]);
+					} else {
+						self.plugins.settings[plugins[i].name] = plugins[i].options;
+						queue.push(plugins[i].name);
+					}
+				}
+			} else if (plugins) {
+				for (key in plugins) {
+					if (plugins.hasOwnProperty(key)) {
+						self.plugins.settings[key] = plugins[key];
+						queue.push(key);
+					}
+				}
+			}
+
+			while (queue.length) {
+				self.require(queue.shift());
+			}
+		};
+
+		Interface.prototype.loadPlugin = function(name) {
+			var self    = this;
+			var plugins = self.plugins;
+			var plugin  = Interface.plugins[name];
+
+			if (!Interface.plugins.hasOwnProperty(name)) {
+				throw new Error('Unable to find "' +  name + '" plugin');
+			}
+
+			plugins.requested[name] = true;
+			plugins.loaded[name] = plugin.fn.apply(self, [self.plugins.settings[name] || {}]);
+			plugins.names.push(name);
+		};
+
+		/**
+		 * Initializes a plugin.
+		 *
+		 * @param {string} name
+		 */
+		Interface.prototype.require = function(name) {
+			var self = this;
+			var plugins = self.plugins;
+
+			if (!self.plugins.loaded.hasOwnProperty(name)) {
+				if (plugins.requested[name]) {
+					throw new Error('Plugin has circular dependency ("' + name + '")');
+				}
+				self.loadPlugin(name);
+			}
+
+			return plugins.loaded[name];
+		};
+
+		/**
+		 * Registers a plugin.
+		 *
+		 * @param {string} name
+		 * @param {function} fn
+		 */
+		Interface.define = function(name, fn) {
+			Interface.plugins[name] = {
+				'name' : name,
+				'fn'   : fn
+			};
+		};
+	};
+
+	var utils = {
+		isArray: Array.isArray || function(vArg) {
+			return Object.prototype.toString.call(vArg) === '[object Array]';
+		}
+	};
+
+	return MicroPlugin;
+}));
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