├── .travis.yml ├── .gitignore ├── src └── optimus_angular │ ├── core.clj │ ├── templates.clj │ └── minification.clj ├── project.clj ├── test └── optimus_angular │ ├── minification_test.clj │ └── templates_test.clj ├── README.md └── LICENSE /.travis.yml: -------------------------------------------------------------------------------- 1 | language: clojure 2 | lein: lein2 3 | script: lein2 test 4 | jdk: 5 | - openjdk7 6 | - oraclejdk7 -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /resources/ng-annotate.js 2 | /node_modules 3 | /target 4 | /classes 5 | /checkouts 6 | pom.xml 7 | pom.xml.asc 8 | *.jar 9 | *.class 10 | /.lein-* 11 | /.nrepl-port 12 | -------------------------------------------------------------------------------- /src/optimus_angular/core.clj: -------------------------------------------------------------------------------- 1 | (ns optimus-angular.core 2 | (:require [optimus-angular.minification] 3 | [optimus-angular.templates])) 4 | 5 | (def create-template-cache optimus-angular.templates/create-template-cache) 6 | (def prepare-for-minification optimus-angular.minification/prepare-for-minification) 7 | -------------------------------------------------------------------------------- /project.clj: -------------------------------------------------------------------------------- 1 | (defproject optimus-angular "2023-02-08" 2 | :description "Angular.JS optimizations for Optimus" 3 | :url "http://github.com/magnars/optimus-angular" 4 | :license {:name "Eclipse Public License" 5 | :url "http://www.eclipse.org/legal/epl-v10.html"} 6 | :dependencies [] 7 | :profiles {:dev {:dependencies [[org.clojure/clojure "1.10.0"] 8 | [midje "1.9.9"] 9 | [optimus "2023-02-08"]] 10 | :plugins [[lein-midje "3.2.1"] 11 | [lein-shell "0.5.0"]]}} 12 | :prep-tasks [["shell" "./build-js-sources.sh"]]) 13 | -------------------------------------------------------------------------------- /src/optimus_angular/templates.clj: -------------------------------------------------------------------------------- 1 | (ns optimus-angular.templates 2 | (:require [clojure.string :as str] 3 | [optimus.homeless :refer [assoc-non-nil]])) 4 | 5 | (defn- escaped-js-string 6 | [s] 7 | (-> s 8 | (str/replace "\\" "\\\\") 9 | (str/replace "\"" "\\\"") 10 | (str/replace "\n" "\\n"))) 11 | 12 | (defn- template-cache-put 13 | [template] 14 | (let [escaped-contents (escaped-js-string (:contents template))] 15 | (str " $templateCache.put(\"" (:path template) "\", \"" escaped-contents "\");\n"))) 16 | 17 | (defn- create-template-cache-js 18 | [module templates] 19 | (when-not (and (seq templates) 20 | (every? :path templates) 21 | (every? :contents templates)) 22 | (throw (IllegalArgumentException. ":templates must be list of assets - try using optimus.assets/load-assets."))) 23 | (str "angular.module(\"" module "\").run([\"$templateCache\", function ($templateCache) {\n" 24 | (apply str (map template-cache-put templates)) 25 | "}]);" )) 26 | 27 | (defn- max? [vals] 28 | (when (seq vals) 29 | (apply max vals))) 30 | 31 | (defn create-template-cache 32 | [& {:keys [path module templates bundle]}] 33 | (-> {:path path 34 | :bundle bundle 35 | :contents (create-template-cache-js module templates)} 36 | (assoc-non-nil :last-modified (max? (keep :last-modified templates))))) 37 | -------------------------------------------------------------------------------- /src/optimus_angular/minification.clj: -------------------------------------------------------------------------------- 1 | (ns optimus-angular.minification 2 | (:require [clojure.string :as str] 3 | [optimus.js :as js])) 4 | 5 | (defn- escape [s] 6 | (-> s 7 | (str/replace "\\" "\\\\") 8 | (str/replace "'" "\\'") 9 | (str/replace "\n" "\\n"))) 10 | 11 | (defn normalize-line-endings [s] 12 | (-> s 13 | (str/replace "\r\n" "\n") 14 | (str/replace "\r" "\n"))) 15 | 16 | (defn- ng-annotate-code [js] 17 | (str "(function () { 18 | var nga = require('ng-annotate'); 19 | var generated = nga('" (escape (normalize-line-endings js)) "', { add: true }); 20 | if (generated.errors) throw new Error(generated.errors[0]); 21 | return generated.src; 22 | }());")) 23 | 24 | (def ng-annotate 25 | (slurp (clojure.java.io/resource "ng-annotate.js"))) 26 | 27 | (defn prepare-ng-annotate-engine [] 28 | (let [engine (js/make-engine)] 29 | (.eval engine ng-annotate) 30 | engine)) 31 | 32 | (defn ng-annotate-js 33 | ([js] (ng-annotate-js js {})) 34 | ([js options] 35 | (js/with-engine [engine (prepare-ng-annotate-engine)] 36 | (ng-annotate-js engine js options))) 37 | ([engine js options] 38 | (js/run-script-with-error-handling engine (ng-annotate-code js) (:path options)))) 39 | 40 | (defn prepare-one-for-minification 41 | [engine asset] 42 | (let [#^String path (:path asset)] 43 | (if (.endsWith path ".js") 44 | (update-in asset [:contents] #(ng-annotate-js engine % {:path path})) 45 | asset))) 46 | 47 | (defn prepare-for-minification 48 | ([assets options] (prepare-for-minification assets)) 49 | ([assets] (js/with-engine [engine (prepare-ng-annotate-engine)] 50 | (doall (map #(prepare-one-for-minification engine %) assets))))) 51 | -------------------------------------------------------------------------------- /test/optimus_angular/minification_test.clj: -------------------------------------------------------------------------------- 1 | (ns optimus-angular.minification-test 2 | (:use midje.sweet 3 | optimus-angular.minification)) 4 | 5 | (fact 6 | "When minifying JavaScript, local variable names are changed to be 7 | just one letter. This reduces file size, but disrupts some libraries 8 | that use clever reflection tricks - like Angular.JS. 9 | 10 | When preparing for minification, these reflection tricks are 11 | replaced by an alternate syntax that still functions after mangling 12 | of local names." 13 | 14 | (ng-annotate-js "angular.module('whatever').controller('MyCtrl', function ($scope, $http) {});") 15 | => "angular.module('whatever').controller('MyCtrl', [\"$scope\", \"$http\", function ($scope, $http) {}]);") 16 | 17 | (fact 18 | "It prepares a list of JS assets." 19 | (prepare-for-minification [{:path "app.js" :contents "angular.module('whatever').factory('MyFactory', function ($http) {});"} 20 | {:path "lib.js" :contents "angular.module('whatever').directive('MyDirective', function ($scope) {});"}]) 21 | => [{:path "app.js" :contents "angular.module('whatever').factory('MyFactory', [\"$http\", function ($http) {}]);"} 22 | {:path "lib.js" :contents "angular.module('whatever').directive('MyDirective', [\"$scope\", function ($scope) {}]);"}]) 23 | 24 | (fact 25 | "It only prepares .js files" 26 | (prepare-for-minification [{:path "app.js" :contents "angular.module('whatever').factory('MyFactory', function ($http) {});"} 27 | {:path "styles.css" :contents "#id { margin: 0; }"}]) 28 | => [{:path "app.js" :contents "angular.module('whatever').factory('MyFactory', [\"$http\", function ($http) {}]);"} 29 | {:path "styles.css" :contents "#id { margin: 0; }"}]) 30 | 31 | (fact 32 | "It includes the path in exception." 33 | (prepare-for-minification [{:path "app.js" :contents "angular.module('whatever')."}]) 34 | => (throws Exception "Exception in app.js: error: couldn't process source due to parse error (line -1, col -1)")) 35 | 36 | (fact 37 | "It doesn't fall over and die when encountering DOS line endings." 38 | (prepare-for-minification [{:path "app.js" :contents "angular.module('whatever').factory('MyFactory', function ($http) {});\r\n"}]) 39 | => [{:path "app.js" :contents "angular.module('whatever').factory('MyFactory', [\"$http\", function ($http) {}]);\n"}]) 40 | -------------------------------------------------------------------------------- /test/optimus_angular/templates_test.clj: -------------------------------------------------------------------------------- 1 | (ns optimus-angular.templates-test 2 | (:use [optimus-angular.templates] 3 | [midje.sweet])) 4 | 5 | (fact 6 | "Angular.JS fetches your templates one at a time, resulting in pretty 7 | horrid performance while it's getting all the html to render your 8 | page. Optimus lets you serve your templates up front." 9 | 10 | (create-template-cache 11 | :path "/my-templates.js" 12 | :module "myapp" 13 | :templates [{:path "/templates/simple.html" 14 | :contents "Hi! \\ Your name is \"{{ name }}\".\n"}]) 15 | 16 | => {:path "/my-templates.js" 17 | :bundle nil 18 | :contents "angular.module(\"myapp\").run([\"$templateCache\", function ($templateCache) {\n $templateCache.put(\"/templates/simple.html\", \"Hi! \\\\ Your name is \\\"{{ name }}\\\".\\n\");\n}]);"}) 19 | 20 | (fact 21 | "Not only can you serve all your templates as one file, you can 22 | bundle them together with one of your javascript bundles." 23 | 24 | (create-template-cache 25 | :path "/multiple-templates.js" 26 | :bundle "app.js" 27 | :module "multiple" 28 | :templates [{:path "/templates/multiple/one.html" 29 | :contents "

One

\n\n

I am one.

\n\n\n"} 30 | {:path "/templates/multiple/two/two.html" 31 | :contents "

Two

\n\n

We are two.

\n"}]) 32 | 33 | => {:path "/multiple-templates.js" 34 | :bundle "app.js" 35 | :contents "angular.module(\"multiple\").run([\"$templateCache\", function ($templateCache) {\n $templateCache.put(\"/templates/multiple/one.html\", \"

One

\\n\\n

I am one.

\\n\\n\\n\");\n $templateCache.put(\"/templates/multiple/two/two.html\", \"

Two

\\n\\n

We are two.

\\n\");\n}]);"}) 36 | 37 | (fact 38 | "You'll get a decent error message if you try to give it something 39 | that isn't a list of assets." 40 | 41 | (create-template-cache 42 | :path "/my-templates.js" 43 | :module "myapp" 44 | :templates ["/templates/simple.html"]) => (throws IllegalArgumentException ":templates must be list of assets - try using optimus.assets/load-assets.")) 45 | 46 | (fact 47 | "The template file uses the newest :last-modified from the assets." 48 | 49 | (-> (create-template-cache 50 | :path "/templates.js" 51 | :bundle "app.js" 52 | :module "myapp" 53 | :templates [{:path "/templates/a.html" :contents "" :last-modified 1} 54 | {:path "/templates/b.html" :contents "" :last-modified 2} 55 | {:path "/templates/c.html" :contents ""}]) 56 | :last-modified) => 2) 57 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # optimus-angular [![Build Status](https://secure.travis-ci.org/magnars/optimus-angular.png)](http://travis-ci.org/magnars/optimus-angular) 2 | 3 | Angular.JS optimizations for [Optimus](http://github.com/magnars/optimus). 4 | 5 | ## Install 6 | 7 | Add to `:dependencies` in your `project.clj`: 8 | 9 | ``` 10 | [optimus "2023-02-08"] 11 | [optimus-angular "2023-02-08"] 12 | ``` 13 | 14 | ## Usage 15 | 16 | This project offers two distinct features. It helps you: 17 | 18 | - Prepopulate the Angular.JS template cache. 19 | - Prepare JavaScript for minification with [ng-annotate](https://github.com/olov/ng-annotate). 20 | 21 | Both features work with [Optimus](http://github.com/magnars/optimus), 22 | or any other asset serving framework that uses the same data structure 23 | for asset representation: `[{:path :contents}]` 24 | 25 | ## Prepopulating the Angular.JS template cache 26 | 27 | `optimus-angular/create-template-cache` is a custom Optimus asset 28 | loader. It creates a virtual JavaScript asset that populates the 29 | Angular.JS template cache with your given templates. 30 | 31 | Here's an example usage: 32 | 33 | ```cl 34 | (ns my-app.example 35 | (require [optimus.assets :as assets] 36 | [optimus-angular.core :as optimus-angular])) 37 | 38 | (defn get-assets [] ;; 1 39 | (concat 40 | (assets/load-bundles "public" my-bundles) ;; 1 41 | [(optimus-angular.templates/create-template-cache ;; 2 42 | :path "/templates/angular.js" ;; 3 43 | :module "MYAPP" ;; 4 44 | :templates (assets/load-assets "public" ;; 5 45 | ["/angular/templates/home.html" 46 | "/angular/templates/form.html" 47 | "/angular/templates/list.html"]))])) 48 | ``` 49 | 50 | 1. You create the template cache in your `get-assets` function along 51 | with your other assets. 52 | 53 | 2. Notice that `create-template-cache` creates a single asset, so it's 54 | in a vector to concat with the other assets . 55 | 56 | 3. You use the `:path` to reference the virtual asset when linking. 57 | 58 | 4. The name of your Angular module. 59 | 60 | 5. It takes a list of assets to include in the cache. These could be 61 | virtual too, like if you're creating your HTML with hiccup. 62 | 63 | So, it creates a file `/templates/angular.js` that inlines the templates 64 | and adds them to the `$templateCache`. 65 | 66 | You link to this script with: 67 | 68 | ```cl 69 | (optimus/file-path request "/templates/angular.js") 70 | ``` 71 | 72 | Or let's say you have a bundle named `app.js`. You can add a `:bundle 73 | "app.js"` pair to the `create-template-cache` call, and the file will 74 | be bundled together with the rest of the javascript files in 75 | `/bundles/app.js`. Nifty. 76 | 77 | #### Do I have to enumerate all the templates like that? 78 | 79 | Dear me, no. That would be a chore. Optimus' `load-assets` supports 80 | regex to pick up files on the class path: 81 | 82 | ```cl 83 | (assets/load-assets "public" [#"/angular/templates/.+\.html$"]) 84 | ``` 85 | 86 | ## Preparing JavaScript for minification 87 | 88 | When minifying JavaScript, local variable names are changed to be just 89 | one letter. This reduces file size, but disrupts some libraries that 90 | use clever reflection tricks - like Angular.JS. 91 | 92 | By transforming your assets with 93 | `optimus-angular/prepare-for-minification`, these reflection tricks 94 | are replaced by an alternate syntax that still functions after 95 | mangling of local names. 96 | 97 | Make sure to insert this asset transformation earlier in the stack 98 | than the js-minifier. This would be a good way of doing it: 99 | 100 | ```cl 101 | (defn my-optimize [assets options] 102 | (-> assets 103 | (optimus-angular/prepare-for-minification) 104 | (optimus.optimizations/all options))) 105 | ``` 106 | 107 | This will change code like this: 108 | 109 | ```js 110 | angular.module('my-app').controller('MyCtrl', function ($scope, $http) {}); 111 | ``` 112 | 113 | into code like this: 114 | 115 | ```js 116 | angular.module('my-app').controller('MyCtrl', [ 117 | '$scope', '$http', function ($scope, $http) {} 118 | ]); 119 | ``` 120 | 121 | which can be safely minified. There are limitations tho. 122 | Optimus-angular uses [ng-annotate](https://github.com/olov/ng-annotate) to do 123 | this job. Please read more about how it works in 124 | [the ng-annotate README](https://github.com/olov/ng-annotate). 125 | 126 | ## Changelog 127 | 128 | #### From 0.2 to 0.3 129 | 130 | - Switch from [ngmin](https://github.com/btford/ngmin) to [ng-annotate](https://github.com/olov/ng-annotate) 131 | 132 | #### From 0.1 to 0.2 133 | 134 | - Add Last-Modified headers to template asset 135 | 136 | ## Contributing 137 | 138 | Yes, please do! 139 | 140 | #### Installing dependencies 141 | 142 | You need [npm](https://npmjs.org/) installed to fetch the JavaScript 143 | dependencies. The actual fetching is automated however. 144 | 145 | #### Running the tests 146 | 147 | `lein midje` will run all tests. 148 | 149 | `lein midje namespace.*` will run only tests beginning with "namespace.". 150 | 151 | `lein midje :autotest` will run all the tests indefinitely. It sets up a 152 | watcher on the code files. If they change, only the relevant tests will be 153 | run again. 154 | 155 | ## License 156 | 157 | Copyright © 2013 Magnar Sveen 158 | 159 | Distributed under the Eclipse Public License either version 1.0 or (at 160 | your option) any later version. 161 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC 2 | LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM 3 | CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT. 4 | 5 | 1. 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