1 files changed, 29 insertions, 0 deletions
diff --git a/src/clarktown/matchers/heading_block.clj b/src/clarktown/matchers/heading_block.clj
new file mode 100644
index 0000000..2295f26
--- /dev/null
+++ b/src/clarktown/matchers/heading_block.clj
@@ -0,0 +1,29 @@
+(ns clarktown.matchers.heading-block
+  (:require
+    [clojure.string :as string]))
+
+
+(defn is-atx-heading?
+  "Determines whether the given block is a atx heading."
+  [block]
+  (-> (string/replace block #"\n" "")
+      string/trim
+      (string/starts-with? "#")))
+
+
+(defn is-settext-heading?
+  "Determines whether the given block is a settext heading."
+  [block]
+  (let [lines (-> (string/split-lines block))
+        chars (-> (last lines)
+                  string/trim
+                  (string/split #""))]
+    (and (> (count lines) 1)
+         (every? #{"-" "="} chars))))
+
+
+(defn match?
+  "Determines whether the given block is a heading block."
+  [block]
+  (or (is-atx-heading? block)
+      (is-settext-heading? block)))
+\ No newline at end of file