Implement Markup

src/Components/Blocks/Markup.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace Erusev\Parsedown\Components\Blocks;
+
+use Erusev\Parsedown\AST\Handler;
+use Erusev\Parsedown\AST\StateRenderable;
+use Erusev\Parsedown\Components\Block;
+use Erusev\Parsedown\Components\ContinuableBlock;
+use Erusev\Parsedown\Configurables\SafeMode;
+use Erusev\Parsedown\Html\Renderables\Element;
+use Erusev\Parsedown\Html\Renderables\RawHtml;
+use Erusev\Parsedown\Html\Renderables\Text;
+use Erusev\Parsedown\Parsedown;
+use Erusev\Parsedown\Parsing\Context;
+use Erusev\Parsedown\State;
+
+final class Markup implements ContinuableBlock
+{
+    use ContinuableBlockDefaultInterrupt, BlockAcquisition;
+
+    const REGEX_HTML_ATTRIBUTE = '[a-zA-Z_:][\w:.-]*+(?:\s*+=\s*+(?:[^"\'=<>`\s]+|"[^"]*+"|\'[^\']*+\'))?+';
+
+    /** @var string */
+    private $html;
+
+    /**
+     * @param string $html
+     */
+    public function __construct($html)
+    {
+        $this->html = $html;
+    }
+
+    /**
+     * @param Context $Context
+     * @param Block|null $Block
+     * @param State|null $State
+     * @return static|null
+     */
+    public static function build(
+        Context $Context,
+        Block $Block = null,
+        State $State = null
+    ) {
+        if (\preg_match('/^<[\/]?+(\w*)(?:[ ]*+'.self::REGEX_HTML_ATTRIBUTE.')*+[ ]*+(\/)?>/', $Context->line()->text(), $matches)) {
+            $element = \strtolower($matches[1]);
+
+            if (\array_key_exists($element, Element::TEXT_LEVEL_ELEMENTS)) {
+                return null;
+            }
+
+            return new self($Context->line()->text());
+        }
+    }
+
+    /**
+     * @param Context $Context
+     * @return self|null
+     */
+    public function continue(Context $Context)
+    {
+        if ($this->interrupted) {
+            return null;
+        }
+
+        $html = $this->html . "\n" . $Context->line()->rawLine();
+
+        return new self($html);
+    }
+
+    /**
+     * @return Handler<Element|RawHtml>
+     */
+    public function stateRenderable(Parsedown $Parsedown)
+    {
+        return new Handler(
+            /** @return Element|RawHtml */
+            function (State $State) {
+                $SafeMode = $State->getOrDefault(SafeMode::class);
+
+                if ($SafeMode->enabled()) {
+                    return new Element('p', [], [new Text($this->html)]);
+                } else {
+                    return new RawHtml($this->html);
+                }
+            }
+        );
+    }
+}