Fill out some basics

lib/Parser.php

@@ -8,8 +8,47 @@ declare(strict_types=1);
 namespace MensBeam\Microformats;
 
 class Parser {
-    public function parse(\DOMNode $node, string $baseUrl = ""): array {
-        
+    protected $rootNode;
+    protected $baseUrl;
+    protected $out;
+
+    /** Parses a DOMElement for microformats
+     * 
+     * @param \DOMElement $node The DOMElement to parse
+     * @param string $baseURL The base URL against which to resolve relative URLs in the output
+     */
+    public function parseNode(\DOMElement $node, string $baseUrl = ""): array {
+        $this->rootNode = $node;
+        $this->baseUrl = $baseUrl;
+        # start with an empty JSON "items" array and "rels" & "rel-urls" hashes:
+        $this->out = [
+            'items'    => [],
+            'rels'     => [],
+            'rel-urls' => [],
+        ];
+        # parse the root element for class microformats, adding to the JSON items array accordingly
+        while ($node) {
+            [$node, $item] = $this->parseRoot($node);
+            if ($item) {
+                $this->out[] = $item;
+            }
+        }
+
+        return $this->out;
+    }
+
+    protected function parseRoot(\DOMElement $root): array {
+        $node = $root;
+        # parse element class for root class name(s) "h-*" and if none, backcompat root classes
+        $classes = preg_split("[ \r\n\t\f]+", $node->getAttribute("class"));
+        $types = array_filter($classes, function($c) {
+            // exclude Tailwind classes https://tailwindcss.com/docs/height
+            return substr($c, 0, 2) === "h-" && !preg_match('/^h-(?:\d+(?:\.\d+|\/\d+)?|px|auto|full|screen|min|max|fit|\[[^\]]*\])$/', $c);
+        });
+        if ($types) {
+            return $this->parseMf2($node, $types); 
+        }
+        // find backcompat classes
     }
 
     /** Finds the next node in tree order after $node, if any
@@ -24,7 +63,7 @@ class Parser {
         $next = $node->nextSibling;
         while (!$next) {
             $node = $node->parentNode;
-            if (!$node) {
+            if ($node->isSameNode($this->rootNode)) {
                 return null;
             }
             $next = $node->nextSibling;