<?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\Polyfill\Intl\Grapheme;
\define('SYMFONY_GRAPHEME_CLUSTER_RX', ((float) \PCRE_VERSION < 10 ? (float) \PCRE_VERSION >= 8.32 : (float) \PCRE_VERSION >= 10.39) ? '\X' : Grapheme::GRAPHEME_CLUSTER_RX);
/**
* Partial intl implementation in pure PHP.
*
* Implemented:
* - grapheme_extract - Extract a sequence of grapheme clusters from a text buffer, which must be encoded in UTF-8
* - grapheme_stripos - Find position (in grapheme units) of first occurrence of a case-insensitive string
* - grapheme_stristr - Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack
* - grapheme_strlen - Get string length in grapheme units
* - grapheme_strpos - Find position (in grapheme units) of first occurrence of a string
* - grapheme_strripos - Find position (in grapheme units) of last occurrence of a case-insensitive string
* - grapheme_strrpos - Find position (in grapheme units) of last occurrence of a string
* - grapheme_strstr - Returns part of haystack string from the first occurrence of needle to the end of haystack
* - grapheme_substr - Return part of a string
*
* @author Nicolas Grekas <p@tchwork.com>
*
* @internal
*/
final class Grapheme
{
// (CRLF|([ZWNJ-ZWJ]|T+|L*(LV?V+|LV|LVT)T*|L+|[^Control])[Extend]*|[Control])
// This regular expression is a work around for http://bugs.exim.org/1279
public const GRAPHEME_CLUSTER_RX = '(?:\r\n|(?:[ -~\x{200C}\x{200D}]|[ᆨ-ᇹ]+|[-]*(?:[]?[ᅠ-ᆢ]+|[-])[ᆨ-ᇹ]*|[-]+|[^\p{Cc}\p{Cf}\p{Zl}\p{Zp}])[\p{Mn}\p{Me}\x{09BE}\x{09D7}\x{0B3E}\x{0B57}\x{0BBE}\x{0BD7}\x{0CC2}\x{0CD5}\x{0CD6}\x{0D3E}\x{0D57}\x{0DCF}\x{0DDF}\x{200C}\x{200D}\x{1D165}\x{1D16E}-\x{1D172}]*|[\p{Cc}\p{Cf}\p{Zl}\p{Zp}])';
private const CASE_FOLD = [
['µ', 'ſ', "\xCD\x85", 'ς', "\xCF\x90", "\xCF\x91", "\xCF\x95", "\xCF\x96", "\xCF\xB0", "\xCF\xB1", "\xCF\xB5", "\xE1\xBA\x9B", "\xE1\xBE\xBE"],
['μ', 's', 'ι', 'σ', 'β', 'θ', 'φ', 'π', 'κ', 'ρ', 'ε', "\xE1\xB9\xA1", 'ι'],
];
public static function grapheme_extract($s, $size, $type = \GRAPHEME_EXTR_COUNT, $start = 0, &$next = 0)
 
 
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