Zabbix

<?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\Yaml;

​

use Symfony\Component\Yaml\Exception\ParseException;

use Symfony\Component\Yaml\Tag\TaggedValue;

​

/**

 * Parser parses YAML strings to convert them to PHP arrays.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 *

 * @final

 */

class Parser

{

    const TAG_PATTERN = '(?P<tag>![\w!.\/:-]+)';

    const BLOCK_SCALAR_HEADER_PATTERN = '(?P<separator>\||>)(?P<modifiers>\+|\-|\d+|\+\d+|\-\d+|\d+\+|\d+\-)?(?P<comments> +#.*)?';

​

    private $filename;

    private $offset = 0;

    private $numberOfParsedLines = 0;

    private $totalNumberOfLines;

    private $lines = [];

    private $currentLineNb = -1;

    private $currentLine = '';

    private $refs = [];

    private $skippedLineNumbers = [];

    private $locallySkippedLineNumbers = [];

    private $refsBeingParsed = [];

​

    /**

     * Parses a YAML file into a PHP value.

     *

     * @param string $filename The path to the YAML file to be parsed

     * @param int    $flags    A bit field of PARSE_* constants to customize the YAML parser behavior

     *

     * @return mixed The YAML converted to a PHP value

     *

     * @throws ParseException If the file could not be read or the YAML is not valid

     */

    public function parseFile(string $filename, int $flags = 0)

    {

        if (!is_file($filename)) {

            throw new ParseException(sprintf('File "%s" does not exist.', $filename));

        }

​

        if (!is_readable($filename)) {

            throw new ParseException(sprintf('File "%s" cannot be read.', $filename));

        }

​

        $this->filename = $filename;

​

        try {

            return $this->parse(file_get_contents($filename), $flags);

        } finally {

            $this->filename = null;

        }

    }

​

    /**

     * Parses a YAML string to a PHP value.

     *

     * @param string $value A YAML string

     * @param int    $flags A bit field of PARSE_* constants to customize the YAML parser behavior

     *

     * @return mixed A PHP value

     *

     * @throws ParseException If the YAML is not valid

     */

    public function parse(string $value, int $flags = 0)

    {

        if (false === preg_match('//u', $value)) {

            throw new ParseException('The YAML value does not appear to be valid UTF-8.', -1, null, $this->filename);

        }

​

        $this->refs = [];

​

        $mbEncoding = null;

​

        if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {

            $mbEncoding = mb_internal_encoding();