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Edit File: QRString.php

<?php
/**
 * Class QRString
 *
 * @filesource   QRString.php
 * @created      05.12.2015
 * @package      chillerlan\QRCode\Output
 * @author       Smiley <smiley@chillerlan.net>
 * @copyright    2015 Smiley
 * @license      MIT
 *
 * @noinspection PhpUnusedParameterInspection
 * @noinspection PhpComposerExtensionStubsInspection
 */

namespace chillerlan\QRCode\Output;

use chillerlan\QRCode\QRCode;

use function implode, is_string, json_encode;

/**
 * Converts the matrix data into string types
 */
class QRString extends QROutputAbstract{

protected string $defaultMode = QRCode::OUTPUT_STRING_TEXT;

/**
	 * @inheritDoc
	 */
	protected function setModuleValues():void{

foreach($this::DEFAULT_MODULE_VALUES as $M_TYPE => $defaultValue){
			$v = $this->options->moduleValues[$M_TYPE] ?? null;

if(!is_string($v)){
				$this->moduleValues[$M_TYPE] = $defaultValue
					? $this->options->textDark
					: $this->options->textLight;
			}
			else{
				$this->moduleValues[$M_TYPE] = $v;
			}

}

/**
	 * string output
	 */
	protected function text(string $file = null):string{
		$str = [];

foreach($this->matrix->matrix() as $row){
			$r = [];

foreach($row as $M_TYPE){
				$r[] = $this->moduleValues[$M_TYPE];
			}

$str[] = implode('', $r);
		}

return implode($this->options->eol, $str);
	}

/**
	 * JSON output
	 */
	protected function json(string $file = null):string{
		return json_encode($this->matrix->matrix());
	}

}

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