Initial Commit

src/HeaderTagInterpreter.php

@@ -0,0 +1,32 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: casey
+ * Date: 12/30/14
+ * Time: 12:32 PM
+ */
+
+namespace TOC;
+
+/**
+ * Interprets header tags
+ *
+ * @package TOC
+ */
+trait HeaderTagInterpreter
+{
+    /**
+     * Convert a topLevel and depth to H1..H6 tags array
+     *
+     * @param int $topLevel
+     * @param int $depth
+     * @return array  Array of header tags; ex: ['h1', 'h2', 'h3']
+     */
+    protected function determineHeaderTags($topLevel, $depth)
+    {
+        $desired = range((int) $topLevel, (int) $topLevel + ((int) $depth - 1));
+        $allowed = [1, 2, 3, 4, 5, 6];
+
+        return array_map(function($v) { return 'h'.$v; }, array_intersect($desired, $allowed));
+    }
+}