Add lessjs task

boot.properties

@@ -0,0 +1 @@
+BOOT_VERSION=2.7.2

build.boot

@@ -0,0 +1,35 @@
+(set-env! :dependencies  '[[org.clojure/clojure "1.8.0" :scope "provided"]
+                           [degree9/boot-npm    "1.7.0-SNAPSHOT"]
+                           [degree9/boot-exec   "1.1.0-SNAPSHOT"]
+                           [adzerk/bootlaces    "0.1.13" :scope "test"]
+                           [degree9/boot-semver "1.6.0" :scope "test"]]
+          :resource-paths   #{"src"})
+
+(require '[degree9.boot-semver :refer :all])
+
+(task-options!
+ pom    {:project 'degree9/boot-css
+         :description "CSS Preprocessors for boot-clj."
+         :url         "https://github.com/degree9/boot-exec"
+         :scm         {:url "https://github.com/degree9/boot-exec"}})
+
+(deftask develop
+  "Build boot-css for development."
+  []
+  (comp
+   (version :develop true
+            :minor 'inc
+            :patch 'zero
+            :pre-release 'snapshot)
+   (watch)
+   (target)
+   (build-jar)))
+
+(deftask deploy
+  "Build boot-css and deploy to clojars."
+  []
+  (comp
+   (version)
+   (target)
+   (build-jar)
+   (push-release)))

src/degree9/boot_css.clj

@@ -0,0 +1,56 @@
+(ns degree9.boot-css
+  (:require [boot.core :as boot]
+            [clojure.string :as str]
+            [clojure.java.io :as io]
+            [boot.util :as u]
+            [degree9.boot-npm :as npm]))
+
+(defn compile-less-file!
+  [fs tmp-dir tmp-file & [{:keys [include-dirs]}]]
+  (let [compiled-file (io/file tmp-dir (str/replace (boot/tmp-path tmp-file) #"\.less$" ".css"))
+        ]
+    (u/dbug* "Less boot dir: %s\n" (boot/tmp-dir tmp-file))
+    (u/dbug* "Less boot file: %s\n" (-> tmp-file boot/tmp-file .getAbsolutePath))
+    (u/dbug* "Less boot target: %s\n" (.getAbsolutePath compiled-file))
+    ;; boot magic, we trigger the task for side effects targeting the absolute
+    ;; folders only.
+    (((npm/exec :module "less"
+                :process "lessc"
+                :arguments (->> [(when (seq include-dirs)
+                                   (str "--include-path=" include-dirs))
+                                 (-> tmp-file boot/tmp-file .getAbsolutePath)
+                                 (.getAbsolutePath compiled-file)]
+                                (keep identity)
+                                vec))
+      identity) fs)))
+
+(boot/deftask lessc
+  "Compile CSS using the npm version of Less."
+  [l less-file    PATH  str    "Path to the .less file to compile (relative to the fileset)."
+   d less-dir     PATH  str    "Path to a dir containing .less files."
+   i include-dirs PATH  #{str} "Include directories for lessc."]
+  (assert (or less-file less-dir) "Either a less-file or less-dir should be present for this task to work.")
+  (assert (not (and less-file less-dir)) "The less-file and less-dir parameters are mutually exclusive.")
+
+  (let [tmp (boot/tmp-dir!)]
+    (boot/with-pre-wrap [fs]
+      (let [less-dirs (when less-dir
+                        (->> fs
+                             boot/ls
+                             (boot/by-re [(re-pattern (str less-dir ".*\\.less$"))])
+                             seq))
+            less-tmp-files (->> (or less-dirs #{})
+                                (into [(when less-file (boot/tmp-get fs less-file))])
+                                (keep identity)
+                                vec)
+            include-dirs (->> less-tmp-files
+                              (mapv #(boot/tmp-dir %))
+                              (into (or include-dirs #{}))
+                              (str/join ":"))]
+        (u/dbug* "Less TmpFiles: %s\n" less-tmp-files)
+
+        (assert (seq less-tmp-files)
+                (format "Cannot find less files on the classpath, review your parameters (less-file=%s, less-dir=%s)." less-file less-dir))
+        (run! #(compile-less-file! fs tmp % {:include-dirs include-dirs})
+              less-tmp-files)
+        (-> fs (boot/add-resource tmp) boot/commit!)))))

version.properties

@@ -0,0 +1,2 @@
+#Mon May 01 18:58:18 MDT 2017
+VERSION=1.0.0