From 618aa8212de09490e8fcc2de3acb3ba23d35e137 Mon Sep 17 00:00:00 2001
From: Andrew Stewart <andrew@stwrt.ca>
Date: Thu, 19 Feb 2015 17:23:41 -0800
Subject: [PATCH] Remove lodash

---
 lib/adaptor.js         |  16 ++---
 lib/cylon.js           |  56 ++++++++++++-----
 lib/driver.js          |  20 +++----
 lib/initializer.js     |  23 +++----
 lib/lodash.js          |  26 --------
 lib/logger.js          |   6 +-
 lib/robot.js           | 133 +++++++++++++++++++++++++++++------------
 lib/utils.js           |  68 +++++++++++++++++----
 spec/lib/utils.spec.js |  33 ++++++++++
 9 files changed, 262 insertions(+), 119 deletions(-)
 delete mode 100644 lib/lodash.js

diff --git a/lib/adaptor.js b/lib/adaptor.js
index 8510d34..91e536e 100644
--- a/lib/adaptor.js
+++ b/lib/adaptor.js
@@ -9,8 +9,7 @@
 "use strict";
 
 var Basestar = require("./basestar"),
-    Utils = require("./utils"),
-    _ = require("./lodash");
+    Utils = require("./utils");
 
 // Public: Creates a new Adaptor
 //
@@ -34,13 +33,14 @@ var Adaptor = module.exports = function Adaptor(opts) {
   // misc. details provided in args hash
   this.details = {};
 
-  _.forEach(opts, function(opt, name) {
-    if (_.include(["robot", "name", "adaptor", "events"], name)) {
-      return;
-    }
+  for (var name in opts) {
+    var opt = opts[name],
+        banned = ["robot", "name", "adaptor", "events"];
 
-    this.details[name] = opt;
-  }, this);
+    if (!~banned.indexOf(name)) {
+      this.details[name] = opt;
+    }
+  }
 };
 
 Utils.subclass(Adaptor, Basestar);
diff --git a/lib/cylon.js b/lib/cylon.js
index ac2a680..b7f78c3 100644
--- a/lib/cylon.js
+++ b/lib/cylon.js
@@ -13,8 +13,7 @@ var Async = require("async");
 var Logger = require("./logger"),
     Robot = require("./robot"),
     Config = require("./config"),
-    Utils = require("./utils"),
-    _ = require("./lodash");
+    Utils = require("./utils");
 
 var EventEmitter = require("events").EventEmitter;
 
@@ -74,15 +73,19 @@ Cylon.robot = function robot(opts) {
 //
 // Returns nothing
 Cylon.api = function api(Server, opts) {
+  var isObject   = function(arg) { return typeof arg === "object"; },
+      isFunction = function(arg) { return typeof arg === "function"; },
+      isString   = function(arg) { return typeof arg === "string"; };
+
   // if only passed options (or nothing), assume HTTP server
-  if (Server == null || _.isObject(Server) && !_.isFunction(Server)) {
+  if (Server == null || isObject(Server) && !isFunction(Server)) {
     opts = Server;
     Server = "http";
   }
 
   opts = opts || {};
 
-  if (_.isString(Server)) {
+  if (isString(Server)) {
     var req = "cylon-api-" + Server;
 
     try {
@@ -103,7 +106,9 @@ Cylon.api = function api(Server, opts) {
           ];
         }
 
-        _.each(messages, function(str) { Logger.error(str); });
+        messages.forEach(function(str) {
+          Logger.error(str);
+        });
         return;
       } else {
         throw e;
@@ -121,13 +126,22 @@ Cylon.api = function api(Server, opts) {
 //
 // Returns nothing
 Cylon.start = function start() {
-  var starters = _.map(this.robots, "start");
+  var starters = [],
+      name;
+
+  for (name in this.robots) {
+    var bot = this.robots[name];
+    starters.push(bot.start.bind(bot));
+  }
 
   Async.parallel(starters, function() {
     var mode = Utils.fetch(Config, "workMode", "async");
 
     if (mode === "sync") {
-      _.invoke(this.robots, "startWork");
+      for (name in this.robots) {
+        var bot = this.robots[name];
+        bot.startWork.call(bot);
+      }
     }
   }.bind(this));
 };
@@ -138,13 +152,15 @@ Cylon.start = function start() {
 //
 // Returns the current config
 Cylon.config = function(opts) {
-  var logChanges = (opts.logging && !_.isEqual(Config.logging, opts.logging));
+  var loggingChanged = (
+    opts.logging && Config.logging !== Utils.merge(Config.logging, opts.logging)
+  );
 
-  if (_.isObject(opts) && !_.isArray(opts)) {
-    Config = _.merge(Config, opts);
+  if (typeof opts === "object" && !Array.isArray(opts)) {
+    Config = Utils.merge(Config, opts);
   }
 
-  if (logChanges) {
+  if (loggingChanged) {
     Logger.setup();
   }
 
@@ -159,7 +175,12 @@ Cylon.config = function(opts) {
 Cylon.halt = function halt(callback) {
   callback = callback || function() {};
 
-  var fns = _.map(this.robots, "halt");
+  var fns = [];
+
+  for (var name in this.robots) {
+    var bot = this.robots[name];
+    fns.push(bot.halt.bind(bot));
+  }
 
   // if robots can"t shut down quickly enough, forcefully self-terminate
   var timeout = Config.haltTimeout || 3000;
@@ -169,9 +190,16 @@ Cylon.halt = function halt(callback) {
 };
 
 Cylon.toJSON = function() {
+  var robots = [];
+
+  for (var name in this.robots) {
+    var bot = this.robots[name];
+    robots.push(bot.toJSON.call(bot));
+  }
+
   return {
-    robots: _.invoke(this.robots, "toJSON"),
-    commands: _.keys(this.commands),
+    robots: robots,
+    commands: Object.keys(this.commands),
     events: this.events
   };
 };
diff --git a/lib/driver.js b/lib/driver.js
index 72818a9..21725ec 100644
--- a/lib/driver.js
+++ b/lib/driver.js
@@ -9,8 +9,7 @@
 "use strict";
 
 var Basestar = require("./basestar"),
-    Utils = require("./utils"),
-    _ = require("./lodash");
+    Utils = require("./utils");
 
 // Public: Creates a new Driver
 //
@@ -36,13 +35,14 @@ var Driver = module.exports = function Driver(opts) {
 
   this.details = {};
 
-  _.forEach(opts, function(opt, name) {
-    if (_.include(["robot", "name", "connection", "driver", "events"], name)) {
-      return;
-    }
+  for (var name in opts) {
+    var opt = opts[name],
+        banned = ["robot", "name", "connection", "driver", "events"];
 
-    this.details[name] = opt;
-  }, this);
+    if (!~banned.indexOf(name)) {
+      this.details[name] = opt;
+    }
+  }
 };
 
 Utils.subclass(Driver, Basestar);
@@ -54,7 +54,7 @@ Driver.prototype.setupCommands = function(commands, proxy) {
 
   Utils.proxyFunctionsToObject(commands, proxy, this);
 
-  _.forEach(commands, function(command) {
+  commands.forEach(function(command) {
     var snake_case = command.replace(/[A-Z]+/g, function(match) {
       if (match.length > 1) {
         match = match.replace(/[A-Z]$/, function(m) {
@@ -74,7 +74,7 @@ Driver.prototype.toJSON = function() {
     name: this.name,
     driver: this.constructor.name || this.name,
     connection: this.connection.name,
-    commands: _.keys(this.commands),
+    commands: Object.keys(this.commands),
     events: this.events,
     details: this.details
   };
diff --git a/lib/initializer.js b/lib/initializer.js
index 1331ded..0f75ce9 100644
--- a/lib/initializer.js
+++ b/lib/initializer.js
@@ -9,15 +9,14 @@
 "use strict";
 
 var Registry = require("./registry"),
-    Config = require("./config"),
-    _ = require("./lodash");
+    Config = require("./config");
 
 function testMode() {
   return process.env.NODE_ENV === "test" && Config.testMode;
 }
 
 module.exports = function Initializer(type, opts) {
-  var mod;
+  var mod, name, prop;
 
   mod = Registry.findBy(type, opts[type]);
 
@@ -33,24 +32,28 @@ module.exports = function Initializer(type, opts) {
 
   var obj = mod[type](opts);
 
-  _.forIn(obj, function(prop, name) {
+  for (name in obj) {
+    prop = obj[name];
+
     if (name === "constructor") {
-      return;
+      continue;
     }
 
-    if (_.isFunction(prop)) {
+    if (typeof prop === "function") {
       obj[name] = prop.bind(obj);
     }
-  });
+  }
 
   if (testMode()) {
     var test = Registry.findBy(type, "test")[type](opts);
 
-    _.forIn(obj, function(prop, name) {
-      if (_.isFunction(prop) && !test[name]) {
+    for (name in obj) {
+      prop = obj[name];
+
+      if (typeof prop === "function" && !test[name]) {
         test[name] = function() { return true; };
       }
-    });
+    }
 
     return test;
   }
diff --git a/lib/lodash.js b/lib/lodash.js
deleted file mode 100644
index 4fbb9fa..0000000
--- a/lib/lodash.js
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * @license
- * Lo-Dash 2.4.1 (Custom Build) lodash.com/license | Underscore.js 1.5.2 underscorejs.org/LICENSE
- * Build: `lodash compat exports="node" include="bindAll,each,first,forEach,forIn,forOwn,include,invoke,isArray,isEqual,isFunction,isObject,isString,keys,map,merge,result,values" --minify --output ./lib/lodash.js`
- */
-;(function(){function n(n,t,r){r=(r||0)-1;for(var e=n?n.length:0;++r<e;)if(n[r]===t)return r;return-1}function t(n){return typeof n.toString!="function"&&typeof(n+"")=="string"}function r(n){n.length=0,L.length<N&&L.push(n)}function e(n,t,r){t||(t=0),typeof r=="undefined"&&(r=n?n.length:0);var e=-1;r=r-t||0;for(var o=Array(0>r?0:r);++e<r;)o[e]=n[t+e];return o}function o(){}function u(n){function t(){if(o){var n=e(o);pt.apply(n,arguments)}if(this instanceof t){var a=f(r.prototype),n=r.apply(a,n||arguments);
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-});var Et=bt||function(n){return n&&typeof n=="object"&&typeof n.length=="number"&&at.call(n)==q||false},xt=g({a:"z",e:"[]",i:"if(!(B[typeof z]))return E",g:"E.push(n)"}),At=mt?function(n){return j(n)?_t.enumPrototypes&&typeof n=="function"||_t.nonEnumArgs&&n.length&&b(n)?xt(n):mt(n):[]}:xt,rt={a:"g,e,K",i:"e=e&&typeof K=='undefined'?e:d(e,K,3)",b:"typeof u=='number'",v:At,g:"if(e(t[n],n,g)===false)return E"},bt={i:"if(!B[typeof t])return E;"+rt.i,b:false},kt=g(rt),Ct=g(rt,bt,{j:false}),St=g(rt,bt);d(/x/)&&(d=function(n){return typeof n=="function"&&"[object Function]"==at.call(n)
-});var Pt=lt?function(n){if(!n||at.call(n)!=V||!_t.argsClass&&b(n))return false;var t=n.valueOf,r=v(t)&&(r=lt(t))&&lt(r);return r?n==r||lt(n)==r:h(n)}:h;o.bind=S,o.bindAll=function(n){for(var t=1<arguments.length?c(arguments,true,false,1):m(n),r=-1,e=t.length;++r<e;){var o=t[r];n[o]=p(n[o],1,null,null,n)}return n},o.createCallback=function(n,t,r){var e=typeof n;if(null==n||"function"==e)return a(n,t,r);if("object"!=e)return F(n);var o=At(n),u=o[0],f=n[u];return 1!=o.length||f!==f||j(f)?function(t){for(var r=o.length,e=false;r--&&(e=l(t[o[r]],n[o[r]],null,true)););return e
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diff --git a/lib/logger.js b/lib/logger.js
index 8ff04c6..5c1dc50 100644
--- a/lib/logger.js
+++ b/lib/logger.js
@@ -13,12 +13,12 @@ var levels = ["debug", "info", "warn", "error", "fatal"];
 var BasicLogger = require("./logger/basic_logger"),
     NullLogger = require("./logger/null_logger"),
     Config = require("./config"),
-    _ = require("./lodash");
+    Utils = require("./utils");
 
 var Logger = module.exports = {
   setup: function(opts) {
     if (typeof opts === "object") {
-      _.merge(Config.logging, opts);
+      Config.logging = Utils.merge(Config.logging, opts);
     }
 
     var logger = Config.logging.logger,
@@ -39,7 +39,7 @@ var Logger = module.exports = {
 
 Logger.setup();
 
-_.each(levels, function(level) {
+levels.forEach(function(level) {
   Logger[level] = function() {
     if (levels.indexOf(level) >= levels.indexOf(Logger.level)) {
       return Logger.logger[level].apply(Logger.logger, arguments);
diff --git a/lib/robot.js b/lib/robot.js
index df96513..7a8213d 100644
--- a/lib/robot.js
+++ b/lib/robot.js
@@ -11,8 +11,7 @@
 var initializer = require("./initializer"),
     Logger = require("./logger"),
     Utils = require("./utils"),
-    Config = require("./config"),
-    _ = require("./lodash");
+    Config = require("./config");
 
 var Async = require("async"),
     EventEmitter = require("events").EventEmitter;
@@ -41,28 +40,38 @@ var Robot = module.exports = function Robot(opts) {
     "log"
   ];
 
-  _.bindAll(this, methods);
+  methods.forEach(function(method) {
+    this[method] = this[method].bind(this);
+  }, this);
 
   this.initRobot(opts);
   this.initConnections(opts);
   this.initDevices(opts);
 
-  _.forEach(opts, function(opt, name) {
+  for (var name in opts) {
+    var opt = opts[name];
+
     if (this[name] !== undefined) {
-      return;
+      continue;
     }
 
     this[name] = opt;
 
-    if (opts.commands == null && _.isFunction(opt)) {
+    if (opts.commands == null && typeof opt === "function") {
       this.commands[name] = opt;
     }
-  }, this);
+  }
 
   if (opts.commands) {
-    var cmds = _.result(opts, "commands");
+    var cmds;
 
-    if (_.isObject(cmds) && !_.isArray(cmds)) {
+    if (typeof opts.commands === "function") {
+      cmds = opts.commands.call(this);
+    } else {
+      cmds = opts.commands;
+    }
+
+    if (typeof cmds === "object" && !Array.isArray(cmds)) {
       this.commands = cmds;
     } else {
       var err = "#commands must be an object ";
@@ -92,12 +101,26 @@ Robot.randomName = function() {
 //
 // Returns an Object containing Robot data
 Robot.prototype.toJSON = function() {
+  var connections = [],
+      devices = [],
+      n;
+
+  for (n in this.connections) {
+    var conn = this.connections[n];
+    connections.push(conn.toJSON.call(conn));
+  }
+
+  for (n in this.devices) {
+    var device = this.devices[n];
+    devices.push(device.toJSON.call(device));
+  }
+
   return {
     name: this.name,
-    connections: _.invoke(this.connections, "toJSON"),
-    devices: _.invoke(this.devices, "toJSON"),
-    commands: _.keys(this.commands),
-    events: _.isArray(this.events) ? this.events : []
+    connections: connections,
+    devices: devices,
+    commands: Object.keys(this.commands),
+    events: Array.isArray(this.events) ? this.events : []
   };
 };
 
@@ -159,29 +182,30 @@ Robot.prototype.initConnections = function(opts) {
     return this.connections;
   }
 
-  if (_.isObject(opts.connections)) {
-    if (_.isArray(opts.connections)) {
+  if (typeof opts.connections === "object") {
+    if (Array.isArray(opts.connections)) {
       this.performArraySetup(opts.connections, "connection", "connections");
       return this.connections;
     }
 
-    _.forIn(opts.connections, function(conn, key) {
-      var name = _.isString(key) ? key : conn.name;
+    for (var key in opts.connections) {
+      var conn = opts.connections[key],
+          name = typeof key === "string" ? key : conn.name;
 
       if (conn.devices) {
-        _.forIn(conn.devices, function(device, deviceName) {
-          opts.devices = opts.devices || {};
+        opts.devices = opts.devices || {};
 
+        for (var d in conn.devices) {
+          var device = conn.devices[d];
           device.connection = name;
-
-          opts.devices[deviceName] = device;
-        });
+          opts.devices[d] = device;
+        }
 
         delete conn.devices;
       }
 
       this.connection(name, conn);
-    }, this);
+    }
   }
 
   return this.connections;
@@ -211,7 +235,10 @@ Robot.prototype.device = function(name, device) {
 
     device.connection = this.connections[device.connection];
   } else {
-    device.connection = _.first(_.values(this.connections));
+    for (var c in this.connections) {
+      device.connection = this.connections[c];
+      break;
+    }
   }
 
   this.devices[device.name] = initializer("driver", device);
@@ -242,16 +269,18 @@ Robot.prototype.initDevices = function(opts) {
     return this.devices;
   }
 
-  if (_.isObject(opts.devices)) {
-    if (_.isArray(opts.devices)) {
+  if (typeof opts.devices === "object") {
+    if (Array.isArray(opts.devices)) {
       this.performArraySetup(opts.devices, "device", "devices");
       return this.devices;
     }
 
-    _.forIn(opts.devices, function(device, key) {
-      var name = _.isString(key) ? key : device.name;
+    for (var key in opts.devices) {
+      var device = opts.devices[key],
+          name = typeof key === "string" ? key : device.name;
+
       this.device(name, device);
-    }, this);
+    }
   }
 
   return this.devices;
@@ -295,7 +324,7 @@ Robot.prototype.start = function(callback) {
       }.bind(this));
     }
 
-    if (_.isFunction(callback)) {
+    if (typeof callback === "function") {
       callback(err, results);
     }
   }.bind(this));
@@ -324,7 +353,11 @@ Robot.prototype.startWork = function() {
 Robot.prototype.startConnections = function(callback) {
   this.log("info", "Starting connections.");
 
-  var starters = _.map(this.connections, function(conn, name) {
+  var starters = [];
+
+  var createStarter = function(name) {
+    var conn = this.connections[name];
+
     this[name] = conn;
 
     return function(cb) {
@@ -339,7 +372,11 @@ Robot.prototype.startConnections = function(callback) {
       this.log("debug", str + ".");
       return conn.connect.call(conn, cb);
     }.bind(this);
-  }, this);
+  }.bind(this);
+
+  for (var name in this.connections) {
+    starters.push(createStarter(name));
+  }
 
   return Async.parallel(starters, callback);
 };
@@ -354,7 +391,11 @@ Robot.prototype.startDevices = function(callback) {
 
   log("info", "Starting devices.");
 
-  var starters = _.map(this.devices, function(device, name) {
+  var starters = [];
+
+  var createStarter = function(name) {
+    var device = this.devices[name];
+
     this[name] = device;
 
     return function(cb) {
@@ -367,7 +408,12 @@ Robot.prototype.startDevices = function(callback) {
       log("debug", str + ".");
       return device.start.call(device, cb);
     };
-  }, this);
+
+  }.bind(this);
+
+  for (var name in this.devices) {
+    starters.push(createStarter(name));
+  }
 
   return Async.parallel(starters, callback);
 };
@@ -386,8 +432,19 @@ Robot.prototype.halt = function(callback) {
     return callback();
   }
 
-  var devices = _.map(this.devices, "halt");
-  var connections = _.map(this.connections, "disconnect");
+  var devices = [],
+      connections = [],
+      n;
+
+  for (n in this.devices) {
+    var device = this.devices[n];
+    devices.push(device.halt.bind(device));
+  }
+
+  for (n in this.connections) {
+    var conn = this.connections[n];
+    connections.push(conn.disconnect.bind(conn));
+  }
 
   try {
     Async.parallel(devices, function() {
@@ -423,8 +480,8 @@ Robot.prototype.performArraySetup = function(things, typeOfThing, arrayName) {
 
   this.log("warn", str);
 
-  _.forEach(things, function(t, key) {
-    var name = _.isString(key) ? key : t.name;
+  things.forEach(function(t, key) {
+    var name = typeof key === "string" ? key : t.name;
     this[typeOfThing](name, t);
   }, this);
 };
diff --git a/lib/utils.js b/lib/utils.js
index 03d95c7..577f8d9 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -8,8 +8,7 @@
 
 "use strict";
 
-var _ = require("./lodash"),
-    monkeyPatches = require("./utils/monkey-patches");
+var monkeyPatches = require("./utils/monkey-patches");
 
 var Utils = module.exports = {
   // Public: Alias to setInterval, combined with Number monkeypatches below to
@@ -94,9 +93,11 @@ var Utils = module.exports = {
       this.constructor = child;
     };
 
-    _.forOwn(parent, function(prop, key) {
-      child[key] = prop;
-    });
+    for (var key in parent) {
+      if (parent.hasOwnProperty(key)) {
+        child[key] = parent[key];
+      }
+    }
 
     Ctor.prototype = parent.prototype;
     child.prototype = new Ctor();
@@ -105,11 +106,13 @@ var Utils = module.exports = {
   },
 
   proxyFunctions: function proxyFunctions(source, target) {
-    _.forEach(source, function(prop, key) {
-      if (_.isFunction(prop) && !target[key]) {
+    for (var key in source) {
+      var prop = source[key];
+
+      if (typeof prop === "function" && !target[key]) {
         target[key] = prop.bind(source);
       }
-    });
+    }
   },
 
   // Public: Proxies a list of methods from one object to another. It will not
@@ -129,8 +132,8 @@ var Utils = module.exports = {
 
     force = force || false;
 
-    _.forEach(methods, function(method) {
-      if (_.isFunction(base[method]) && !force) {
+    methods.forEach(function(method) {
+      if (typeof base[method] === "function" && !force) {
         return;
       }
 
@@ -197,6 +200,51 @@ var Utils = module.exports = {
     return fallback;
   },
 
+  // Public: Merges two arrays/objects together, recursively.
+  //
+  // base   - what should be merged onto
+  // source - what should be merged into it
+  //
+  // Returns a merged object/array
+  merge: function(base, source) {
+    var isArray = Array.isArray(source);
+
+    if (base == null) {
+      base = isArray ? [] : {};
+    }
+
+    // merge objects
+    if (isArray) {
+      source.forEach(function(e, i) {
+        if (typeof base[i] === "undefined") {
+          base[i] = e;
+        } else if (typeof e === "object") {
+          base[i] = Utils.merge(base[i], e);
+        } else {
+          if (!~base.indexOf(e)) {
+            base.push(e);
+          }
+        }
+      });
+    } else {
+      var key;
+
+      for (key in source) {
+        if (typeof source[key] !== "object" || !source[key]) {
+          base[key] = source[key];
+        } else {
+          if (base[key]) {
+            Utils.merge(base[key], source[key]);
+          } else {
+            base[key] = source[key];
+          }
+        }
+      }
+    }
+
+    return base;
+  },
+
   // Public: Given a name, and an array of existing names, returns a unique
   // name.
   //
diff --git a/spec/lib/utils.spec.js b/spec/lib/utils.spec.js
index 4977907..530f5a2 100644
--- a/spec/lib/utils.spec.js
+++ b/spec/lib/utils.spec.js
@@ -252,4 +252,37 @@ describe("Utils", function() {
       });
     });
   });
+
+  describe("#merge", function() {
+    var merge = utils.merge;
+
+    var base = {
+      fruits: ["apple"],
+      vegetables: ["beet"],
+      thing: null,
+      otherThing: "hello!",
+      data: [{ "user": "barney" }, { "user": "fred" }]
+    };
+
+    var source = {
+      fruits: ["banana"],
+      vegetables: ["carrot"],
+      thing: "hello!",
+      otherThing: null,
+      data: [{ "age": 36 }, { "age": 40 }]
+    };
+
+    var expected = {
+      data: [ { age: 36, user: "barney" }, { age: 40, user: "fred" } ],
+      fruits: [ "apple", "banana" ],
+      vegetables: [ "beet", "carrot" ],
+      thing: "hello!",
+      otherThing: null
+    };
+
+    it("merges two objects", function() {
+      var merged = merge(base, source);
+      expect(merged).to.be.eql(expected);
+    });
+  });
 });