add center

src/clj_jtwig/standard_functions.clj

@@ -29,6 +29,10 @@
    {:fn (fn [s]
           (WordUtils/capitalize s))}
 
+   "center"
+   {:fn (fn [s size & [padding-string]]
+          (StringUtils/center s size (or padding-string " ")))}
+
    "dump"
    {:fn (fn [x]
           (with-out-str

test/clj_jtwig/functions_test.clj

@@ -288,6 +288,14 @@
     (is (= (render "{{ capitalize_all('hello world') }}" nil)
            "Hello World")))
 
+  (testing "center"
+    (is (= (render "{{ center('bat', 5) }}" nil)
+           " bat "))
+    (is (= (render "{{ center('bat', 3) }}" nil)
+           "bat"))
+    (is (= (render "{{ center('bat', 5, 'x') }}" nil)
+           "xbatx")))
+
   (testing "dump"
     (is (= (render "{{ a|dump }}" {:a [{:foo "bar"} [1, 2, 3] "hello"]})
            "({\"foo\" \"bar\"} (1 2 3) \"hello\")\n")))