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vendor/symfony/var-dumper/Dumper/AbstractDumper.php
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211
vendor/symfony/var-dumper/Dumper/AbstractDumper.php
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\VarDumper\Dumper;
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use Symfony\Component\VarDumper\Cloner\Data;
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use Symfony\Component\VarDumper\Cloner\DumperInterface;
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/**
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* Abstract mechanism for dumping a Data object.
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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abstract class AbstractDumper implements DataDumperInterface, DumperInterface
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{
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const DUMP_LIGHT_ARRAY = 1;
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const DUMP_STRING_LENGTH = 2;
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const DUMP_COMMA_SEPARATOR = 4;
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const DUMP_TRAILING_COMMA = 8;
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public static $defaultOutput = 'php://output';
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protected $line = '';
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protected $lineDumper;
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protected $outputStream;
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protected $decimalPoint; // This is locale dependent
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protected $indentPad = ' ';
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protected $flags;
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private $charset;
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/**
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* @param callable|resource|string|null $output A line dumper callable, an opened stream or an output path, defaults to static::$defaultOutput
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* @param string|null $charset The default character encoding to use for non-UTF8 strings
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* @param int $flags A bit field of static::DUMP_* constants to fine tune dumps representation
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*/
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public function __construct($output = null, string $charset = null, int $flags = 0)
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{
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$this->flags = $flags;
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$this->setCharset($charset ?: ini_get('php.output_encoding') ?: ini_get('default_charset') ?: 'UTF-8');
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$this->decimalPoint = localeconv();
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$this->decimalPoint = $this->decimalPoint['decimal_point'];
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$this->setOutput($output ?: static::$defaultOutput);
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if (!$output && \is_string(static::$defaultOutput)) {
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static::$defaultOutput = $this->outputStream;
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}
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}
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/**
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* Sets the output destination of the dumps.
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*
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* @param callable|resource|string $output A line dumper callable, an opened stream or an output path
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*
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* @return callable|resource|string The previous output destination
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*/
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public function setOutput($output)
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{
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$prev = null !== $this->outputStream ? $this->outputStream : $this->lineDumper;
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if (\is_callable($output)) {
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$this->outputStream = null;
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$this->lineDumper = $output;
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} else {
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if (\is_string($output)) {
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$output = fopen($output, 'wb');
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}
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$this->outputStream = $output;
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$this->lineDumper = [$this, 'echoLine'];
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}
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return $prev;
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}
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/**
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* Sets the default character encoding to use for non-UTF8 strings.
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*
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* @param string $charset The default character encoding to use for non-UTF8 strings
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*
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* @return string The previous charset
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*/
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public function setCharset($charset)
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{
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$prev = $this->charset;
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$charset = strtoupper($charset);
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$charset = null === $charset || 'UTF-8' === $charset || 'UTF8' === $charset ? 'CP1252' : $charset;
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$this->charset = $charset;
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return $prev;
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}
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/**
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* Sets the indentation pad string.
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*
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* @param string $pad A string that will be prepended to dumped lines, repeated by nesting level
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*
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* @return string The previous indent pad
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*/
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public function setIndentPad($pad)
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{
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$prev = $this->indentPad;
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$this->indentPad = $pad;
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return $prev;
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}
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/**
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* Dumps a Data object.
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*
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* @param Data $data A Data object
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* @param callable|resource|string|true|null $output A line dumper callable, an opened stream, an output path or true to return the dump
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*
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* @return string|null The dump as string when $output is true
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*/
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public function dump(Data $data, $output = null)
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{
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$this->decimalPoint = localeconv();
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$this->decimalPoint = $this->decimalPoint['decimal_point'];
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if ($locale = $this->flags & (self::DUMP_COMMA_SEPARATOR | self::DUMP_TRAILING_COMMA) ? setlocale(LC_NUMERIC, 0) : null) {
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setlocale(LC_NUMERIC, 'C');
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}
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if ($returnDump = true === $output) {
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$output = fopen('php://memory', 'r+b');
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}
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if ($output) {
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$prevOutput = $this->setOutput($output);
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}
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try {
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$data->dump($this);
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$this->dumpLine(-1);
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if ($returnDump) {
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$result = stream_get_contents($output, -1, 0);
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fclose($output);
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return $result;
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}
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} finally {
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if ($output) {
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$this->setOutput($prevOutput);
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}
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if ($locale) {
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setlocale(LC_NUMERIC, $locale);
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}
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}
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}
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/**
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* Dumps the current line.
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*
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* @param int $depth The recursive depth in the dumped structure for the line being dumped,
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* or -1 to signal the end-of-dump to the line dumper callable
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*/
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protected function dumpLine($depth)
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{
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($this->lineDumper)($this->line, $depth, $this->indentPad);
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$this->line = '';
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}
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/**
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* Generic line dumper callback.
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*
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* @param string $line The line to write
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* @param int $depth The recursive depth in the dumped structure
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* @param string $indentPad The line indent pad
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*/
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protected function echoLine($line, $depth, $indentPad)
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{
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if (-1 !== $depth) {
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fwrite($this->outputStream, str_repeat($indentPad, $depth).$line."\n");
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}
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}
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/**
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* Converts a non-UTF-8 string to UTF-8.
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*
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* @param string $s The non-UTF-8 string to convert
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*
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* @return string The string converted to UTF-8
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*/
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protected function utf8Encode($s)
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{
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if (preg_match('//u', $s)) {
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return $s;
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}
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if (!\function_exists('iconv')) {
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throw new \RuntimeException('Unable to convert a non-UTF-8 string to UTF-8: required function iconv() does not exist. You should install ext-iconv or symfony/polyfill-iconv.');
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}
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if (false !== $c = @iconv($this->charset, 'UTF-8', $s)) {
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return $c;
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}
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if ('CP1252' !== $this->charset && false !== $c = @iconv('CP1252', 'UTF-8', $s)) {
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return $c;
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}
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return iconv('CP850', 'UTF-8', $s);
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}
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}
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