init commit

addons/qrcode/library/Endroid/QrCode/WriterRegistry.php

@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * (c) Jeroen van den Enden <info@endroid.nl>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Endroid\QrCode;
+
+use Endroid\QrCode\Exception\InvalidWriterException;
+use Endroid\QrCode\Writer\BinaryWriter;
+use Endroid\QrCode\Writer\DebugWriter;
+use Endroid\QrCode\Writer\EpsWriter;
+use Endroid\QrCode\Writer\PngWriter;
+use Endroid\QrCode\Writer\SvgWriter;
+use Endroid\QrCode\Writer\WriterInterface;
+
+class WriterRegistry implements WriterRegistryInterface
+{
+    /** @var WriterInterface[] */
+    private $writers = [];
+
+    /** @var WriterInterface|null */
+    private $defaultWriter;
+
+    public function loadDefaultWriters(): void
+    {
+        if (count($this->writers) > 0) {
+            return;
+        }
+
+        $this->addWriters([
+            new BinaryWriter(),
+            new DebugWriter(),
+            new EpsWriter(),
+            new PngWriter(),
+            new SvgWriter(),
+        ]);
+
+        $this->setDefaultWriter('png');
+    }
+
+    public function addWriters(iterable $writers): void
+    {
+        foreach ($writers as $writer) {
+            $this->addWriter($writer);
+        }
+    }
+
+    public function addWriter(WriterInterface $writer): void
+    {
+        $this->writers[$writer->getName()] = $writer;
+    }
+
+    public function getWriter(string $name): WriterInterface
+    {
+        $this->assertValidWriter($name);
+
+        return $this->writers[$name];
+    }
+
+    public function getDefaultWriter(): WriterInterface
+    {
+        if ($this->defaultWriter instanceof WriterInterface) {
+            return $this->defaultWriter;
+        }
+
+        throw new InvalidWriterException('Please set the default writer via the second argument of addWriter');
+    }
+
+    public function setDefaultWriter(string $name): void
+    {
+        $this->defaultWriter = $this->writers[$name];
+    }
+
+    public function getWriters(): array
+    {
+        return $this->writers;
+    }
+
+    private function assertValidWriter(string $name): void
+    {
+        if (!isset($this->writers[$name])) {
+            throw new InvalidWriterException('Invalid writer "'.$name.'"');
+        }
+    }
+}