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phpMyAdmin/vendor/bacon/bacon-qr-code/src/BaconQrCode/Writer.php

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+<?php
+/**
+ * BaconQrCode
+ *
+ * @link      http://github.com/Bacon/BaconQrCode For the canonical source repository
+ * @copyright 2013 Ben 'DASPRiD' Scholzen
+ * @license   http://opensource.org/licenses/BSD-2-Clause Simplified BSD License
+ */
+
+namespace BaconQrCode;
+
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Encoder\Encoder;
+use BaconQrCode\Exception;
+use BaconQrCode\Renderer\RendererInterface;
+
+/**
+ * QR code writer.
+ */
+class Writer
+{
+    /**
+     * Renderer instance.
+     *
+     * @var RendererInterface
+     */
+    protected $renderer;
+
+    /**
+     * Creates a new writer with a specific renderer.
+     *
+     * @param RendererInterface $renderer
+     */
+    public function __construct(RendererInterface $renderer)
+    {
+        $this->renderer = $renderer;
+    }
+
+    /**
+     * Sets the renderer used to create a byte stream.
+     *
+     * @param  RendererInterface $renderer
+     * @return Writer
+     */
+    public function setRenderer(RendererInterface $renderer)
+    {
+        $this->renderer = $renderer;
+        return $this;
+    }
+
+    /**
+     * Gets the renderer used to create a byte stream.
+     *
+     * @return RendererInterface
+     */
+    public function getRenderer()
+    {
+        return $this->renderer;
+    }
+
+    /**
+     * Writes QR code and returns it as string.
+     *
+     * Content is a string which *should* be encoded in UTF-8, in case there are
+     * non ASCII-characters present.
+     *
+     * @param  string  $content
+     * @param  string  $encoding
+     * @param  integer $ecLevel
+     * @return string
+     * @throws Exception\InvalidArgumentException
+     */
+    public function writeString(
+        $content,
+        $encoding = Encoder::DEFAULT_BYTE_MODE_ECODING,
+        $ecLevel = ErrorCorrectionLevel::L
+    ) {
+        if (strlen($content) === 0) {
+            throw new Exception\InvalidArgumentException('Found empty contents');
+        }
+
+        $qrCode = Encoder::encode($content, new ErrorCorrectionLevel($ecLevel), $encoding);
+
+        return $this->getRenderer()->render($qrCode);
+    }
+
+    /**
+     * Writes QR code to a file.
+     *
+     * @see    Writer::writeString()
+     * @param  string  $content
+     * @param  string  $filename
+     * @param  string  $encoding
+     * @param  integer $ecLevel
+     * @return void
+     */
+    public function writeFile(
+        $content,
+        $filename,
+        $encoding = Encoder::DEFAULT_BYTE_MODE_ECODING,
+        $ecLevel = ErrorCorrectionLevel::L
+    ) {
+        file_put_contents($filename, $this->writeString($content, $encoding, $ecLevel));
+    }
+}