. */ declare(strict_types=1); namespace App\Services\LabelSystem\Barcodes; use App\Entity\LabelSystem\BarcodeType; use Com\Tecnick\Barcode\Barcode; /** * This function is used to generate barcodes of various types using arbitrary (text) content. * @see \App\Tests\Services\LabelSystem\Barcodes\BarcodeHelperTest */ class BarcodeHelper { /** * Generates a barcode with the given content and type and returns it as SVG string. * @param string $content * @param BarcodeType $type * @return string */ public function barcodeAsSVG(string $content, BarcodeType $type): string { $barcode = new Barcode(); $type_str = match ($type) { BarcodeType::NONE => throw new \InvalidArgumentException('Barcode type must not be NONE! This would make no sense...'), BarcodeType::QR => 'QRCODE', BarcodeType::DATAMATRIX => 'DATAMATRIX', BarcodeType::CODE39 => 'C39', BarcodeType::CODE93 => 'C93', BarcodeType::CODE128 => 'C128A', }; return $barcode->getBarcodeObj($type_str, $content)->getSvgCode(); } /** * Generates a barcode with the given content and type and returns it as HTML image tag. * @param string $content * @param BarcodeType $type * @param string $width Width of the image tag * @param string|null $alt_text The alt text of the image tag. If null, the content is used. * @return string */ public function barcodeAsHTML(string $content, BarcodeType $type, string $width = '100%', ?string $alt_text = null): string { $svg = $this->barcodeAsSVG($content, $type); $base64 = $this->dataUri($svg, 'image/svg+xml'); $alt_text ??= $content; return ''; } /** * Creates a data URI (RFC 2397). * Based on the Twig implementation from HTMLExtension * * Length validation is not performed on purpose, validation should * be done before calling this filter. * * @return string The generated data URI */ private function dataUri(string $data, string $mime): string { $repr = 'data:'; $repr .= $mime; if (str_starts_with($mime, 'text/')) { $repr .= ','.rawurlencode($data); } else { $repr .= ';base64,'.base64_encode($data); } return $repr; } }