Implement Image

src/Components/Inlines/Image.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace Erusev\Parsedown\Components\Inlines;
+
+use Erusev\Parsedown\AST\Handler;
+use Erusev\Parsedown\AST\StateRenderable;
+use Erusev\Parsedown\Components\Inline;
+use Erusev\Parsedown\Configurables\SafeMode;
+use Erusev\Parsedown\Html\Renderables\Element;
+use Erusev\Parsedown\Html\Renderables\Text;
+use Erusev\Parsedown\Parsedown;
+use Erusev\Parsedown\Parsing\Excerpt;
+use Erusev\Parsedown\State;
+
+/** @psalm-type _Metadata=array{href: string, title?: string} */
+final class Image implements Inline
+{
+    use WidthTrait, DefaultBeginPosition;
+
+    /** @var Link */
+    private $Link;
+
+    /**
+     * @param Link $Link
+     */
+    public function __construct(Link $Link)
+    {
+        $this->Link = $Link;
+        $this->width = $Link->width() + 1;
+    }
+
+    /**
+     * @param Excerpt $Excerpt
+     * @param State $State
+     * @return static|null
+     */
+    public static function build(Excerpt $Excerpt, State $State)
+    {
+        if (\substr($Excerpt->text(), 0, 1) !== '!') {
+            return null;
+        }
+
+        $Excerpt = $Excerpt->addingToOffset(1);
+
+        $Link = Link::build($Excerpt, $State);
+
+        if (! isset($Link)) {
+            return null;
+        }
+
+        return new self($Link);
+    }
+
+    /**
+     * @return Handler<Element|Text>
+     */
+    public function stateRenderable(Parsedown $Parsedown)
+    {
+        return new Handler(
+            /** @return Element|Text */
+            function (State $State) use ($Parsedown) {
+                $linkAttributes = $this->Link->attributes();
+
+                $attributes = [
+                    'src' => $linkAttributes['href'],
+                    'alt' => $this->Link->label(),
+                ];
+
+                if (isset($linkAttributes['title'])) {
+                    $attributes['title'] = $linkAttributes['title'];
+                }
+
+                if ($State->getOrDefault(SafeMode::class)->enabled()) {
+                    $attributes['src'] = Element::filterUnsafeUrl($attributes['src']);
+                }
+
+                return Element::selfClosing('img', $attributes);
+            }
+        );
+    }
+}