vendor/symfony/var-dumper/Dumper/AbstractDumper.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\VarDumper\Dumper;

use Symfony\Component\VarDumper\Cloner\Data;
use Symfony\Component\VarDumper\Cloner\DumperInterface;

/**
 * Abstract mechanism for dumping a Data object.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
abstract class AbstractDumper implements DataDumperInterface, DumperInterface
{
    const DUMP_LIGHT_ARRAY = 1;
    const DUMP_STRING_LENGTH = 2;
    const DUMP_COMMA_SEPARATOR = 4;
    const DUMP_TRAILING_COMMA = 8;

    public static $defaultOutput = 'php://output';

    protected $line = '';
    protected $lineDumper;
    protected $outputStream;
    protected $decimalPoint; // This is locale dependent
    protected $indentPad = '  ';
    protected $flags;

    private $charset = '';

    /**
     * @param callable|resource|string|null $output  A line dumper callable, an opened stream or an output path, defaults to static::$defaultOutput
     * @param string|null                   $charset The default character encoding to use for non-UTF8 strings
     * @param int                           $flags   A bit field of static::DUMP_* constants to fine tune dumps representation
     */
    public function __construct($output = null, string $charset = null, int $flags = 0)
    {
        $this->flags = $flags;
        $this->setCharset($charset ?: ini_get('php.output_encoding') ?: ini_get('default_charset') ?: 'UTF-8');
        $this->decimalPoint = localeconv();
        $this->decimalPoint = $this->decimalPoint['decimal_point'];
        $this->setOutput($output ?: static::$defaultOutput);
        if (!$output && \is_string(static::$defaultOutput)) {
            static::$defaultOutput = $this->outputStream;
        }
    }

    /**
     * Sets the output destination of the dumps.
     *
     * @param callable|resource|string $output A line dumper callable, an opened stream or an output path