1 files changed, 173 insertions, 0 deletions
diff --git a/vendor/chillerlan/php-qrcode/src/Output/QREps.php b/vendor/chillerlan/php-qrcode/src/Output/QREps.php
new file mode 100644
index 000000000..76dd50b37
--- /dev/null
+++ b/vendor/chillerlan/php-qrcode/src/Output/QREps.php
@@ -0,0 +1,173 @@
+<?php
+/**
+ * Class QREps
+ *
+ * @created      09.05.2022
+ * @author       smiley <smiley@chillerlan.net>
+ * @copyright    2022 smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCode\Output;
+
+use function array_values, count, date, implode, is_array, is_numeric, max, min, round, sprintf;
+
+/**
+ * Encapsulated Postscript (EPS) output
+ *
+ * @see https://github.com/t0k4rt/phpqrcode/blob/bb29e6eb77e0a2a85bb0eb62725e0adc11ff5a90/qrvect.php#L52-L137
+ * @see https://web.archive.org/web/20170818010030/http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/postscript/pdfs/5002.EPSF_Spec.pdf
+ * @see https://web.archive.org/web/20210419003859/https://www.adobe.com/content/dam/acom/en/devnet/actionscript/articles/PLRM.pdf
+ * @see https://github.com/chillerlan/php-qrcode/discussions/148
+ */
+class QREps extends QROutputAbstract{
+
+	public const MIME_TYPE = 'application/postscript';
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function moduleValueIsValid($value):bool{
+
+		if(!is_array($value) || count($value) < 3){
+			return false;
+		}
+
+		// check the first values of the array
+		foreach(array_values($value) as $i => $val){
+
+			if($i > 3){
+				break;
+			}
+
+			if(!is_numeric($val)){
+				return false;
+			}
+
+		}
+
+		return true;
+	}
+
+	/**
+	 * @param array $value
+	 *
+	 * @inheritDoc
+	 */
+	protected function prepareModuleValue($value):string{
+		$values = [];
+
+		foreach(array_values($value) as $i => $val){
+
+			if($i > 3){
+				break;
+			}
+
+			// clamp value and convert from int 0-255 to float 0-1 RGB/CMYK range
+			$values[] = round((max(0, min(255, intval($val))) / 255), 6);
+		}
+
+		return $this->formatColor($values);
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	protected function getDefaultModuleValue(bool $isDark):string{
+		return $this->formatColor(($isDark) ? [0.0, 0.0, 0.0] : [1.0, 1.0, 1.0]);
+	}
+
+	/**
+	 * Set the color format string
+	 *
+	 * 4 values in the color array will be interpreted as CMYK, 3 as RGB
+	 *
+	 * @throws \chillerlan\QRCode\Output\QRCodeOutputException
+	 */
+	protected function formatColor(array $values):string{
+		$count = count($values);
+
+		if($count < 3){
+			throw new QRCodeOutputException('invalid color value');
+		}
+
+		$format = ($count === 4)
+			// CMYK
+			? '%f %f %f %f C'
+			// RGB
+			: '%f %f %f R';
+
+		return sprintf($format, ...$values);
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function dump(?string $file = null):string{
+		[$width, $height] = $this->getOutputDimensions();
+
+		$eps = [
+			// main header
+			'%!PS-Adobe-3.0 EPSF-3.0',
+			'%%Creator: php-qrcode (https://github.com/chillerlan/php-qrcode)',
+			'%%Title: QR Code',
+			sprintf('%%%%CreationDate: %1$s', date('c')),
+			'%%DocumentData: Clean7Bit',
+			'%%LanguageLevel: 3',
+			sprintf('%%%%BoundingBox: 0 0 %s %s', $width, $height),
+			'%%EndComments',
+			// function definitions
+			'%%BeginProlog',
+			'/F { rectfill } def',
+			'/R { setrgbcolor } def',
+			'/C { setcmykcolor } def',
+			'%%EndProlog',
+		];
+
+		if($this::moduleValueIsValid($this->options->bgColor)){
+			$eps[] = $this->prepareModuleValue($this->options->bgColor);
+			$eps[] = sprintf('0 0 %s %s F', $width, $height);
+		}
+
+		// create the path elements
+		$paths = $this->collectModules(fn(int $x, int $y, int $M_TYPE):string => $this->module($x, $y, $M_TYPE));
+
+		foreach($paths as $M_TYPE => $path){
+
+			if(empty($path)){
+				continue;
+			}
+
+			$eps[] = $this->getModuleValue($M_TYPE);
+			$eps[] = implode("\n", $path);
+		}
+
+		// end file
+		$eps[] = '%%EOF';
+
+		$data = implode("\n", $eps);
+
+		$this->saveToFile($data, $file);
+
+		return $data;
+	}
+
+	/**
+	 * Returns a path segment for a single module
+	 */
+	protected function module(int $x, int $y, int $M_TYPE):string{
+
+		if(!$this->drawLightModules && !$this->matrix->isDark($M_TYPE)){
+			return '';
+		}
+
+		$outputX = ($x * $this->scale);
+		// Actual size - one block = Topmost y pos.
+		$top     = ($this->length - $this->scale);
+		// Apparently y-axis is inverted (y0 is at bottom and not top) in EPS, so we have to switch the y-axis here
+		$outputY = ($top - ($y * $this->scale));
+
+		return sprintf('%d %d %d %d F', $outputX, $outputY, $this->scale, $this->scale);
+	}
+
+}