# woocommerce-pos/1.10.20/vendor_prefixed/chillerlan/php-qrcode/src/Output/QRStringText.php

WCPOS – Point of Sale (POS) plugin for WooCommerce, version 1.10.20. 70 lines.

- Page: https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/code/vendor_prefixed/chillerlan/php-qrcode/src/Output/QRStringText.php
- Raw: https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/raw/vendor_prefixed/chillerlan/php-qrcode/src/Output/QRStringText.php
- Modified: 2026-06-09T13:55:26+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/code/vendor_prefixed/chillerlan/php-qrcode/src/Output/QRStringText.php#L10-L20`.

```php
<?php

/**
 * Class QRStringText
 *
 * @created      25.10.2023
 * @author       smiley <smiley@chillerlan.net>
 * @copyright    2023 smiley
 * @license      MIT
 */
namespace WCPOS\Vendor\chillerlan\QRCode\Output;

use function array_map, implode, is_string, max, min, sprintf;
/**
 *
 */
class QRStringText extends QROutputAbstract
{
    public const MIME_TYPE = 'text/plain';
    /**
     * @inheritDoc
     */
    public static function moduleValueIsValid($value) : bool
    {
        return is_string($value);
    }
    /**
     * @inheritDoc
     */
    protected function prepareModuleValue($value) : string
    {
        return $value;
    }
    /**
     * @inheritDoc
     */
    protected function getDefaultModuleValue(bool $isDark) : string
    {
        return $isDark ? '██' : '░░';
    }
    /**
     * @inheritDoc
     */
    public function dump(?string $file = null) : string
    {
        $lines = [];
        $linestart = $this->options->textLineStart;
        foreach ($this->matrix->getMatrix() as $row) {
            $lines[] = $linestart . implode('', array_map([$this, 'getModuleValue'], $row));
        }
        $data = implode($this->eol, $lines);
        $this->saveToFile($data, $file);
        return $data;
    }
    /**
     * a little helper to create a proper ANSI 8-bit color escape sequence
     *
     * @see https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
     * @see https://en.wikipedia.org/wiki/Block_Elements
     *
     * @codeCoverageIgnore
     */
    public static function ansi8(string $str, int $color, ?bool $background = null) : string
    {
        $color = max(0, min($color, 255));
        $background = $background === \true ? 48 : 38;
        return sprintf("\x1b[%s;5;%sm%s\x1b[0m", $background, $color, $str);
    }
}

```