add filter: length

2 files changed, 16 insertions, 0 deletions

diff --git a/src/template.c b/src/template.c
index f85db25..cf021c1 100644
--- a/src/template.c
+++ b/src/template.c
@@ -666,11 +666,20 @@ struct unja_object *filter_wordcount(struct unja_object *obj) {
     return make_int_object(word_count);
 }
 
+
+struct unja_object *filter_length(struct unja_object *obj) {
+    assert(obj->type == OBJ_STRING);
+    int len = strlen(obj->string);
+    object_free(obj);
+    return make_int_object(len);
+}
+
 struct hashmap *default_filters() {
     struct hashmap *filters = hashmap_new();
     hashmap_insert(filters, "trim", filter_trim);
     hashmap_insert(filters, "lower", filter_lower);
     hashmap_insert(filters, "wordcount", filter_wordcount);
+    hashmap_insert(filters, "length", filter_length);
     return filters;
 }
 
diff --git a/tests/test_template.c b/tests/test_template.c
index 6b2ca12..1ad131e 100644
--- a/tests/test_template.c
+++ b/tests/test_template.c
@@ -484,4 +484,11 @@ TEST(filter_wordcount) {
     free(output);
 }
 
+TEST(filter_title) {
+    char *input = "{{ \"Hello world\" | length }}";
+    char *output = template_string(input, NULL);
+    assert_str(output, "11");
+    free(output);
+}
+
 END_TESTS 
\ No newline at end of file