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vendor/endroid/qr-code/src/WriterRegistry.php

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+<?php
+
+/*
+ * (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\WriterInterface;
+
+class WriterRegistry implements WriterRegistryInterface
+{
+    /**
+     * @var WriterInterface[]
+     */
+    protected $writers;
+
+    /**
+     * @var WriterInterface
+     */
+    protected $defaultWriter;
+
+    public function __construct()
+    {
+        $this->writers = [];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addWriter(WriterInterface $writer, $setAsDefault = false)
+    {
+        $this->writers[$writer->getName()] = $writer;
+
+        if ($setAsDefault || 1 === count($this->writers)) {
+            $this->defaultWriter = $writer;
+        }
+    }
+
+    /**
+     * @param $name
+     *
+     * @return WriterInterface
+     */
+    public function getWriter($name)
+    {
+        $this->assertValidWriter($name);
+
+        return $this->writers[$name];
+    }
+
+    /**
+     * @return WriterInterface
+     *
+     * @throws InvalidWriterException
+     */
+    public function getDefaultWriter()
+    {
+        if ($this->defaultWriter instanceof WriterInterface) {
+            return $this->defaultWriter;
+        }
+
+        throw new InvalidWriterException('Please set the default writer via the second argument of addWriter');
+    }
+
+    /**
+     * @return WriterInterface[]
+     */
+    public function getWriters()
+    {
+        return $this->writers;
+    }
+
+    /**
+     * @param string $writer
+     *
+     * @throws InvalidWriterException
+     */
+    protected function assertValidWriter($writer)
+    {
+        if (!isset($this->writers[$writer])) {
+            throw new InvalidWriterException('Invalid writer "'.$writer.'"');
+        }
+    }
+}