diff --git a/project.clj b/project.clj
index e29657d..57d65b7 100644
--- a/project.clj
+++ b/project.clj
@@ -4,6 +4,7 @@
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
:dependencies [[org.clojure/clojure "1.8.0"]
+ [camel-snake-kebab "0.4.0"]
[cheshire "5.7.0"]
[clj-rss "0.2.3"]
[clj-text-decoration "0.0.3"]
diff --git a/src/cryogen_core/compiler.clj b/src/cryogen_core/compiler.clj
index 053d1ba..6403cca 100644
--- a/src/cryogen_core/compiler.clj
+++ b/src/cryogen_core/compiler.clj
@@ -8,6 +8,7 @@
[selmer.util :refer [set-custom-resource-path!]]
[text-decoration.core :refer :all]
[cryogen-core.io :as cryogen-io]
+ [cryogen-core.klipse :as klipse]
[cryogen-core.markup :as m]
[cryogen-core.rss :as rss]
[cryogen-core.sass :as sass]
@@ -111,7 +112,8 @@
(merge
(merge-meta-and-content file-name page-meta content)
{:uri (page-uri file-name :page-root-uri config)
- :page-index (:page-index page-meta)})))
+ :page-index (:page-index page-meta)
+ :klipse (klipse/merge-configs (:klipse config) (:klipse page-meta))})))
(defn parse-post
"Return a map with the given post's information."
@@ -128,7 +130,8 @@
:formatted-archive-group formatted-group
:parsed-archive-group (.parse archive-fmt formatted-group)
:uri (page-uri file-name :post-root-uri config)
- :tags (set (:tags page-meta))}))))
+ :tags (set (:tags page-meta))
+ :klipse (klipse/merge-configs (:klipse config) (:klipse page-meta))}))))
(defn read-posts
"Returns a sequence of maps representing the data from markdown files of posts.
@@ -474,11 +477,15 @@
(println (green "compiling assets..."))
(let [{:keys [^String site-url blog-prefix rss-name recent-posts sass-dest keep-files ignored-files previews? author-root-uri theme]
:as config} (read-config)
- posts (add-prev-next (read-posts config))
+ posts (map (fn [{:keys [klipse content] :as post}]
+ (assoc post :klipse (klipse/emit klipse content)))
+ (add-prev-next (read-posts config)))
posts-by-tag (group-by-tags posts)
posts (tag-posts posts config)
latest-posts (->> posts (take recent-posts) vec)
- pages (read-pages config)
+ pages (map (fn [{:keys [klipse content] :as page}]
+ (assoc page :klipse (klipse/emit klipse content)))
+ (read-pages config))
home-page (->> pages
(filter #(boolean (:home? %)))
(first))
diff --git a/src/cryogen_core/klipse.clj b/src/cryogen_core/klipse.clj
new file mode 100644
index 0000000..3735c10
--- /dev/null
+++ b/src/cryogen_core/klipse.clj
@@ -0,0 +1,133 @@
+(ns cryogen-core.klipse
+ (:require [clojure.string :as str]
+ [camel-snake-kebab.core :refer [->snake_case_string ->camelCaseString]]
+ [cheshire.core :as json]
+ [net.cgrand.enlive-html :as enlive]))
+
+;;;;;;;;;;;
+;; utils
+
+(defn map-keys
+ "Applies f to each key in m"
+ [f m]
+ (zipmap (map f (keys m)) (vals m)))
+
+(defn update-existing
+ "Like clojure.core/update, but returns m untouched if it doesn't contain k"
+ [m k f & args]
+ (if (contains? m k) (apply update m k f args) m))
+
+(def map-or-nil? (some-fn map? nil?))
+
+(defn deep-merge
+ "Like clojure.core/merge, but also merges nested maps under the same key."
+ [& ms]
+ (apply merge-with
+ (fn [v1 v2]
+ (if (and (map-or-nil? v1) (map-or-nil? v2))
+ (deep-merge v1 v2)
+ v2))
+ ms))
+
+(defn filter-html-elems
+ "Recursively walks a sequence of enlive-style html elements depth first
+ and returns a flat sequence of the elements where (pred elem)"
+ [pred html-elems]
+ (reduce (fn [acc {:keys [content] :as elem}]
+ (into (if (pred elem) (conj acc elem) acc)
+ (filter-html-elems pred content)))
+ [] html-elems))
+
+(defn code-block-classes
+ "Takes a string of html and returns a sequence of
+ all the classes on all code blocks."
+ [html]
+ (->> html
+ enlive/html-snippet
+ (filter-html-elems (comp #{:code} :tag))
+ (keep (comp :class :attrs))
+ (mapcat #(str/split % #" "))))
+
+;;;;;;;;;;;;
+;; klipse
+
+(def defaults
+ {:js-src
+ {:min "https://storage.googleapis.com/app.klipse.tech/plugin_prod/js/klipse_plugin.min.js"
+ :non-min "https://storage.googleapis.com/app.klipse.tech/plugin/js/klipse_plugin.js"}
+
+ :css-base "https://storage.googleapis.com/app.klipse.tech/css/codemirror.css"})
+
+;; This needs to be updated whenever a new clojure selector is introduced.
+;; It should only be necessary for react wrappers and the like, so not very often.
+;; When (if?) self hosted cljs becomes compatible with advanced builds
+;; this can be removed and we can just always use minified js.
+(def clojure-selectors
+ "A set of selectors that imply clojure evaluation."
+ #{"selector" "selector_reagent"})
+
+(defn clojure-eval-classes
+ "Takes settings and returns a set of the html classes that imply clojure eval."
+ [normalized-settings]
+ (reduce (fn [classes selector]
+ (if-let [klass (get normalized-settings selector)]
+ (conj classes (->> klass rest (apply str))) ;; Strip the leading .
+ classes))
+ #{} clojure-selectors))
+
+(defn clojure-eval?
+ "Takes settings and html and returns whether there is any clojure eval."
+ [normalized-settings html]
+ (boolean (some (clojure-eval-classes normalized-settings) (code-block-classes html))))
+
+(defn normalize-settings
+ "Transform the keys to the correct snake-case or camelCase strings."
+ [settings]
+ (-> (map-keys ->snake_case_string settings)
+ (update-existing "codemirror_options_in" (partial map-keys ->camelCaseString))
+ (update-existing "codemirror_options_out" (partial map-keys ->camelCaseString))))
+
+(defn merge-configs
+ "Merges the defaults, global config and post config,
+ transforms lisp-case keywords into snake_case/camelCase strings
+ Returns nil if there's no post-config.
+ A post-config with the value true counts as an empty map."
+ [global-config post-config]
+ (when post-config
+ (let [post-config (if (true? post-config) {} post-config)]
+ (deep-merge defaults
+ (update-existing global-config :settings normalize-settings)
+ (update-existing post-config :settings normalize-settings)))))
+
+(defn infer-clojure-eval
+ "Infers whether there's clojure eval and returns the config with the
+ appropriate value assoc'd to :js.
+ Returns the config untouched if :js is already specified."
+ [config html]
+ (if (:js config)
+ config
+ (assoc config :js
+ (if (clojure-eval? (:settings config) html) :non-min :min))))
+
+(defn include-css [href]
+ (str ""))
+
+(defn include-js [src]
+ (str ""))
+
+(defn emit
+ "Takes the :klipse config from config.edn and the :klipse config from the
+ current post, and returns the html to include on the bottom of the page."
+ [config html]
+ (when-let [{:keys [settings js-src js css-base css-theme]}
+ (infer-clojure-eval config html)]
+
+ (assert (#{:min :non-min} js)
+ (str ":js needs to be one of :min or :non-min but was: " js))
+
+ (str (include-css css-base) "\n"
+ (when css-theme (str (include-css css-theme) "\n"))
+ "\n"
+ (include-js (js js-src)))))
diff --git a/test/cryogen_core/klipse_test.clj b/test/cryogen_core/klipse_test.clj
new file mode 100644
index 0000000..33b15f6
--- /dev/null
+++ b/test/cryogen_core/klipse_test.clj
@@ -0,0 +1,75 @@
+(ns cryogen-core.klipse-test
+ (:require [cryogen-core.klipse :refer :all]
+ [clojure.test :refer [deftest testing is are]]))
+
+(deftest map-keys-test
+ (is (= {"a" 1 "b" 2} (map-keys name {:a 1 :b 2}))))
+
+(deftest update-existing-test
+ (is (= {:a 1 :b 2} (update-existing {:a 1 :b 1} :b inc)))
+ (is (= {:a 1} (update-existing {:a 1} :b (constantly 2)))))
+
+(deftest deep-merge-test
+ (is (= {:a {:b 1 :c 2}} (deep-merge {:a {:b 1}} {:a {:c 2}})))
+ (is (= {:a {:b 1}} (deep-merge {:a {:b 1}} {:a nil})))
+ (is (= {:a {:b 1 :c 3}} (deep-merge {:a {:b 1 :c 2}} {:a {:c 3}}))))
+
+;; For testing convenience.
+(defn elt
+ "Returns an enlive style html element."
+ ([tag] (elt tag nil))
+ ([tag attrs & content]
+ {:tag tag, :attrs attrs, :content content}))
+
+(deftest filter-html-elems-test
+ (is (= [(elt :div {:class "x"} :content [(elt :div {:class "x"} "foo")])
+ (elt :div {:class "x"} "foo")])
+ (filter-html-elems (comp #{"x"} :class :attrs)
+ [(elt :h1 {:class "y"} "things!")
+ (elt :div {:class "x"} (elt :div {:class "x"} "foo"))])))
+
+(deftest code-block-classes-test
+ (is (= ["clojure" "ruby"]
+ (code-block-classes
+ "stuff
+
+123"))))
+
+(deftest clojure-eval-classes-test
+ (is (= #{"eval-cljs" "eval-reagent"}
+ (clojure-eval-classes {"selector" ".eval-cljs"
+ "selector_reagent" ".eval-reagent"
+ "selector_eval_ruby" ".eval-ruby"}))))
+
+(deftest clojure-eval?-test
+ (is (clojure-eval? {"selector" ".eval-cljs"}
+ "stuff
+
+123"))
+
+ (is (not (clojure-eval? {"selector" ".eval-cljs"
+ "selector_eval_ruby" ".eval-ruby"}
+ "stuff
+123"))))
+
+(deftest normalize-settings-test
+ (is (= {"selector_reagent" ".reagent"
+ "codemirror_options_in" {"lineNumbers" true}}
+ (normalize-settings
+ {:selector-reagent ".reagent"
+ :codemirror-options-in {:line-numbers true}}))))
+
+(deftest merge-configs-test
+ (testing "Things are merged correctly"
+ (is (= (merge defaults
+ {:settings {"selector" ".clojure-eval"
+ "codemirror_options_in" {"lineNumbers" true}}})
+ (merge-configs {:settings {:codemirror-options-in {:line-numbers true}}}
+ {:settings {:selector ".clojure-eval"}}))))
+
+ (testing "If it's all set up in config.edn, in the post it can be just :klipse true"
+ (is (= (merge defaults {:settings {"selector_js" ".javascript"}})
+ (merge-configs {:settings {:selector-js ".javascript"}} true))))
+
+ (testing "Returns nil if there's nothing in the blog post"
+ (is (nil? (merge-configs {:settings {:selector ".clojure-eval"}} nil)))))