add :tag-symbols option

src/clojure/clj_jtwig/core.clj

@@ -3,6 +3,7 @@
   (:import (com.lyncode.jtwig JtwigTemplate JtwigContext JtwigModelMap)
            (com.lyncode.jtwig.content.api Renderable)
            (com.lyncode.jtwig.configuration JtwigConfiguration)
+           (com.lyncode.jtwig.parser.config TagSymbols)
            (com.lyncode.jtwig.render RenderContext)
            (com.lyncode.jtwig.render.config RenderConfiguration)
            (com.lyncode.jtwig.resource ClasspathJtwigResource StringJtwigResource FileJtwigResource)
@@ -31,7 +32,14 @@
       (flush-template-cache!)
 
       (= k :strict-mode)
-      (-> configuration .render (.strictMode v)))
+      (-> configuration .render (.strictMode v))
+
+      (= k :tag-symbols)
+      (-> configuration
+          .parse
+          (.withSymbols (condp = v
+                          :default TagSymbols/DEFAULT
+                          :js      TagSymbols/JAVASCRIPT))))
 
     (swap! options assoc k v)))
 

src/clojure/clj_jtwig/options.clj

@@ -44,4 +44,10 @@
      :web-resource-path-root           "public"
 
      ; when enabled, exceptions will be thrown when attempting to use variables that do not exist
-     :strict-mode                      false}))
+     :strict-mode                      false
+
+     ; allows for changing the tag symbols used from normal Twig-style to a style more friendly
+     ; with certain Javascript template engines (e.g. Angular).
+     ; :default => tag: {% %}, output: {{ }}, comment: {# #}
+     ; :js      => tag: <# #>, output: <@ @>, comment: <$ $>
+     :tag-symbols                      :default}))

test/clj_jtwig/core_test.clj

@@ -156,4 +156,17 @@
           "trying to output a non-existant variable under non-strict-mode")
       (is (= (render "{{ foo }}" {:foo "bar"})
              "bar")
-          "trying to output an existing variable under non-strict-mode"))))
+          "trying to output an existing variable under non-strict-mode"))
+    (do
+      (set-options! :tag-symbols :js)
+      (is (= (render "@> 1 <@" {:foo "bar"})
+             "1")
+          "js-style output symbols")
+      (is (= (render "<# if (foo) #>bar<# endif #>" {:foo true})
+             "bar")
+          "js-style tag symbols")
+      (is (= (render "<$ this is a comment $>")
+             "")
+          "js-style comment symbols")
+
+      (set-options! :tag-symbols :default))))