69 Zeilen
1.7 KiB
PHP
69 Zeilen
1.7 KiB
PHP
<?php
|
|
declare(strict_types = 1);
|
|
|
|
namespace BaconQrCode;
|
|
|
|
use BaconQrCode\Common\ErrorCorrectionLevel;
|
|
use BaconQrCode\Encoder\Encoder;
|
|
use BaconQrCode\Exception\InvalidArgumentException;
|
|
use BaconQrCode\Renderer\RendererInterface;
|
|
|
|
/**
|
|
* QR code writer.
|
|
*/
|
|
final class Writer
|
|
{
|
|
/**
|
|
* Renderer instance.
|
|
*
|
|
* @var RendererInterface
|
|
*/
|
|
private $renderer;
|
|
|
|
/**
|
|
* Creates a new writer with a specific renderer.
|
|
*/
|
|
public function __construct(RendererInterface $renderer)
|
|
{
|
|
$this->renderer = $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.
|
|
*
|
|
* @throws InvalidArgumentException if the content is empty
|
|
*/
|
|
public function writeString(
|
|
string $content,
|
|
string $encoding = Encoder::DEFAULT_BYTE_MODE_ECODING,
|
|
?ErrorCorrectionLevel $ecLevel = null
|
|
) : string {
|
|
if (strlen($content) === 0) {
|
|
throw new InvalidArgumentException('Found empty contents');
|
|
}
|
|
|
|
if (null === $ecLevel) {
|
|
$ecLevel = ErrorCorrectionLevel::L();
|
|
}
|
|
|
|
return $this->renderer->render(Encoder::encode($content, $ecLevel, $encoding));
|
|
}
|
|
|
|
/**
|
|
* Writes QR code to a file.
|
|
*
|
|
* @see Writer::writeString()
|
|
*/
|
|
public function writeFile(
|
|
string $content,
|
|
string $filename,
|
|
string $encoding = Encoder::DEFAULT_BYTE_MODE_ECODING,
|
|
?ErrorCorrectionLevel $ecLevel = null
|
|
) : void {
|
|
file_put_contents($filename, $this->writeString($content, $encoding, $ecLevel));
|
|
}
|
|
}
|