Version 1

[yaffs-website] / vendor / masterminds / html5 / src / HTML5 / Parser / TreeBuildingRules.php

diff --git a/vendor/masterminds/html5/src/HTML5/Parser/TreeBuildingRules.php b/vendor/masterminds/html5/src/HTML5/Parser/TreeBuildingRules.php
new file mode 100644 (file)
index 0000000..6236208
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+++ b/vendor/masterminds/html5/src/HTML5/Parser/TreeBuildingRules.php
@@ -0,0 +1,139 @@
+<?php
+namespace Masterminds\HTML5\Parser;
+
+/**
+ * Handles special-case rules for the DOM tree builder.
+ *
+ * Many tags have special rules that need to be accomodated on an
+ * individual basis. This class handles those rules.
+ *
+ * See section 8.1.2.4 of the spec.
+ *
+ * @todo - colgroup and col special behaviors
+ *       - body and head special behaviors
+ */
+class TreeBuildingRules
+{
+
+    protected static $tags = array(
+        'li' => 1,
+        'dd' => 1,
+        'dt' => 1,
+        'rt' => 1,
+        'rp' => 1,
+        'tr' => 1,
+        'th' => 1,
+        'td' => 1,
+        'thead' => 1,
+        'tfoot' => 1,
+        'tbody' => 1,
+        'table' => 1,
+        'optgroup' => 1,
+        'option' => 1
+    );
+
+    /**
+     * Build a new rules engine.
+     *
+     * @param \DOMDocument $doc
+     *            The DOM document to use for evaluation and modification.
+     */
+    public function __construct($doc)
+    {
+        $this->doc = $doc;
+    }
+
+    /**
+     * Returns true if the given tagname has special processing rules.
+     */
+    public function hasRules($tagname)
+    {
+        return isset(static::$tags[$tagname]);
+    }
+
+    /**
+     * Evaluate the rule for the current tag name.
+     *
+     * This may modify the existing DOM.
+     *
+     * @return \DOMElement The new Current DOM element.
+     */
+    public function evaluate($new, $current)
+    {
+        switch ($new->tagName) {
+            case 'li':
+                return $this->handleLI($new, $current);
+            case 'dt':
+            case 'dd':
+                return $this->handleDT($new, $current);
+            case 'rt':
+            case 'rp':
+                return $this->handleRT($new, $current);
+            case 'optgroup':
+                return $this->closeIfCurrentMatches($new, $current, array(
+                    'optgroup'
+                ));
+            case 'option':
+                return $this->closeIfCurrentMatches($new, $current, array(
+                    'option',
+                ));
+            case 'tr':
+                return $this->closeIfCurrentMatches($new, $current, array(
+                    'tr'
+                ));
+            case 'td':
+            case 'th':
+                return $this->closeIfCurrentMatches($new, $current, array(
+                    'th',
+                    'td'
+                ));
+            case 'tbody':
+            case 'thead':
+            case 'tfoot':
+            case 'table': // Spec isn't explicit about this, but it's necessary.
+
+                return $this->closeIfCurrentMatches($new, $current, array(
+                    'thead',
+                    'tfoot',
+                    'tbody'
+                ));
+        }
+
+        return $current;
+    }
+
+    protected function handleLI($ele, $current)
+    {
+        return $this->closeIfCurrentMatches($ele, $current, array(
+            'li'
+        ));
+    }
+
+    protected function handleDT($ele, $current)
+    {
+        return $this->closeIfCurrentMatches($ele, $current, array(
+            'dt',
+            'dd'
+        ));
+    }
+
+    protected function handleRT($ele, $current)
+    {
+        return $this->closeIfCurrentMatches($ele, $current, array(
+            'rt',
+            'rp'
+        ));
+    }
+
+    protected function closeIfCurrentMatches($ele, $current, $match)
+    {
+        $tname = $current->tagName;
+        if (in_array($current->tagName, $match)) {
+            $current->parentNode->appendChild($ele);
+        } else {
+            $current->appendChild($ele);
+        }
+
+        return $ele;
+    }
+}