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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\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}]|[แจ-แน]+|[แ-แ
]*(?:[๊ฐ๊ฐ๊ฐธ๊ฑ๊ฑฐ๊ฒ๊ฒจ๊ณ๊ณ ๊ณผ๊ด๊ดด๊ต๊ตฌ๊ถ๊ถค๊ท๊ท๊ทธ๊ธ๊ธฐ๊น๊นจ๊บ๊บ ๊บผ๊ป๊ปด๊ผ๊ผฌ๊ฝ๊ฝค๊พ๊พ๊พธ๊ฟ๊ฟฐ๋๋จ๋๋ ๋ผ๋๋ด๋๋ฌ๋๋ค๋
๋
๋
ธ๋๋ฐ๋๋จ๋๋ ๋ผ๋๋ด๋๋ฌ๋๋ค๋๋๋ธ๋๋ฐ๋๋จ๋๋ ๋ผ๋๋ด๋๋ฌ๋๋ค๋๋๋ธ๋๋ฐ๋๋จ๋๋ ๋ผ๋๋ด๋๋ฌ๋๋ค๋๋๋ธ๋๋ฐ๋๋จ๋๋ ๋ผ๋๋ด๋๋ฌ๋ ๋ ค๋ก๋ก๋กธ๋ข๋ขฐ๋ฃ๋ฃจ๋ค๋ค ๋คผ๋ฅ๋ฅด๋ฆ๋ฆฌ๋ง๋งค๋จ๋จ๋จธ๋ฉ๋ฉฐ๋ช๋ชจ๋ซ๋ซ ๋ซผ๋ฌ๋ฌด๋ญ๋ญฌ๋ฎ๋ฎค๋ฏ๋ฏ๋ฏธ๋ฐ๋ฐฐ๋ฑ๋ฑจ๋ฒ๋ฒ ๋ฒผ๋ณ๋ณด๋ด๋ดฌ๋ต๋ตค๋ถ๋ถ๋ถธ๋ท๋ทฐ๋ธ๋ธจ๋น๋น ๋นผ๋บ๋บด๋ป๋ปฌ๋ผ๋ผค๋ฝ๋ฝ๋ฝธ๋พ๋พฐ๋ฟ๋ฟจ์์ ์ผ์์ด์์ฌ์์ค์์์ธ์
์
ฐ์์จ์์ ์ผ์์ด์์ฌ์์ค์์์ธ์์ฐ์์จ์์ ์ผ์์ด์์ฌ์์ค์์์ธ์์ฐ์์จ์์ ์ผ์์ด์์ฌ์์ค์์์ธ์์ฐ์์จ์์ ์ผ์์ด์์ฌ์์ค์ ์ ์ ธ์ก์กฐ์ข์ขจ์ฃ์ฃ ์ฃผ์ค์คด์ฅ์ฅฌ์ฆ์ฆค์ง์ง์งธ์จ์จฐ์ฉ์ฉจ์ช์ช ์ชผ์ซ์ซด์ฌ์ฌฌ์ญ์ญค์ฎ์ฎ์ฎธ์ฏ์ฏฐ์ฐ์ฐจ์ฑ์ฑ ์ฑผ์ฒ์ฒด์ณ์ณฌ์ด์ดค์ต์ต์ตธ์ถ์ถฐ์ท์ทจ์ธ์ธ ์ธผ์น์นด์บ์บฌ์ป์ปค์ผ์ผ์ผธ์ฝ์ฝฐ์พ์พจ์ฟ์ฟ ์ฟผํํดํํฌํํคํํํธํํฐํ
ํ
จํํ ํผํํดํํฌํํคํํํธํํฐํํจํํ ํผํํดํํฌํํคํํํธํํฐํํจํํ ํผํํดํํฌํํคํํํธํํฐํํจํํ ํผํํดํํฌํ]?[แ
-แข]+|[๊ฐ-ํฃ])[แจ-แน]*|[แ-แ
]+|[^\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 = [
['ยต', 'ลฟ', "\xCD\x85", 'ฯ', "\xCF\x90", "\xCF\x91", "\xCF\x95", "\xCF\x96", "\xCF\xB0", "\xCF\xB1", "\xCF\xB5", "\xE1\xBA\x9B", "\xE1\xBE\xBE"],
['ฮผ', 's', 'ฮน', 'ฯ', 'ฮฒ', 'ฮธ', 'ฯ', 'ฯ', 'ฮบ', 'ฯ', 'ฮต', "\xE1\xB9\xA1", 'ฮน'],
];
public static function grapheme_extract($s, $size, $type = \GRAPHEME_EXTR_COUNT, $start = 0, &$next = 0)
{
if (0 > $start) {
$start = \strlen($s) + $start;
}
if (!\is_scalar($s)) {
$hasError = false;
set_error_handler(function () use (&$hasError) { $hasError = true; });
$next = substr($s, $start);
restore_error_handler();
if ($hasError) {
substr($s, $start);
$s = '';
} else {
$s = $next;
}
} else {
$s = substr($s, $start);
}
$size = (int) $size;
$type = (int) $type;
$start = (int) $start;
if (\GRAPHEME_EXTR_COUNT !== $type && \GRAPHEME_EXTR_MAXBYTES !== $type && \GRAPHEME_EXTR_MAXCHARS !== $type) {
if (80000 > \PHP_VERSION_ID) {
return false;
}
throw new \ValueError('grapheme_extract(): Argument #3 ($type) must be one of GRAPHEME_EXTR_COUNT, GRAPHEME_EXTR_MAXBYTES, or GRAPHEME_EXTR_MAXCHARS');
}
if (!isset($s[0]) || 0 > $size || 0 > $start) {
return false;
}
if (0 === $size) {
return '';
}
$next = $start;
$s = preg_split('/('.SYMFONY_GRAPHEME_CLUSTER_RX.')/u', "\r\n".$s, $size + 1, \PREG_SPLIT_NO_EMPTY | \PREG_SPLIT_DELIM_CAPTURE);
if (!isset($s[1])) {
return false;
}
$i = 1;
$ret = '';
do {
if (\GRAPHEME_EXTR_COUNT === $type) {
--$size;
} elseif (\GRAPHEME_EXTR_MAXBYTES === $type) {
$size -= \strlen($s[$i]);
} else {
$size -= iconv_strlen($s[$i], 'UTF-8//IGNORE');
}
if ($size >= 0) {
$ret .= $s[$i];
}
} while (isset($s[++$i]) && $size > 0);
$next += \strlen($ret);
return $ret;
}
public static function grapheme_strlen($s)
{
preg_replace('/'.SYMFONY_GRAPHEME_CLUSTER_RX.'/u', '', $s, -1, $len);
return 0 === $len && '' !== $s ? null : $len;
}
public static function grapheme_substr($s, $start, $len = null)
{
if (null === $len) {
$len = 2147483647;
}
preg_match_all('/'.SYMFONY_GRAPHEME_CLUSTER_RX.'/u', $s, $s);
$slen = \count($s[0]);
$start = (int) $start;
if (0 > $start) {
$start += $slen;
}
if (0 > $start) {
if (\PHP_VERSION_ID < 80000) {
return false;
}
$start = 0;
}
if ($start >= $slen) {
return \PHP_VERSION_ID >= 80000 ? '' : false;
}
$rem = $slen - $start;
if (0 > $len) {
$len += $rem;
}
if (0 === $len) {
return '';
}
if (0 > $len) {
return \PHP_VERSION_ID >= 80000 ? '' : false;
}
if ($len > $rem) {
$len = $rem;
}
return implode('', \array_slice($s[0], $start, $len));
}
public static function grapheme_strpos($s, $needle, $offset = 0)
{
return self::grapheme_position($s, $needle, $offset, 0);
}
public static function grapheme_stripos($s, $needle, $offset = 0)
{
return self::grapheme_position($s, $needle, $offset, 1);
}
public static function grapheme_strrpos($s, $needle, $offset = 0)
{
return self::grapheme_position($s, $needle, $offset, 2);
}
public static function grapheme_strripos($s, $needle, $offset = 0)
{
return self::grapheme_position($s, $needle, $offset, 3);
}
public static function grapheme_stristr($s, $needle, $beforeNeedle = false)
{
return mb_stristr($s, $needle, $beforeNeedle, 'UTF-8');
}
public static function grapheme_strstr($s, $needle, $beforeNeedle = false)
{
return mb_strstr($s, $needle, $beforeNeedle, 'UTF-8');
}
private static function grapheme_position($s, $needle, $offset, $mode)
{
$needle = (string) $needle;
if (80000 > \PHP_VERSION_ID && !preg_match('/./us', $needle)) {
return false;
}
$s = (string) $s;
if (!preg_match('/./us', $s)) {
return false;
}
if ($offset > 0) {
$s = self::grapheme_substr($s, $offset);
} elseif ($offset < 0) {
if (2 > $mode) {
$offset += self::grapheme_strlen($s);
$s = self::grapheme_substr($s, $offset);
if (0 > $offset) {
$offset = 0;
}
} elseif (0 > $offset += self::grapheme_strlen($needle)) {
$s = self::grapheme_substr($s, 0, $offset);
$offset = 0;
} else {
$offset = 0;
}
}
// As UTF-8 is self-synchronizing, and we have ensured the strings are valid UTF-8,
// we can use normal binary string functions here. For case-insensitive searches,
// case fold the strings first.
$caseInsensitive = $mode & 1;
$reverse = $mode & 2;
if ($caseInsensitive) {
// Use the same case folding mode as mbstring does for mb_stripos().
// Stick to SIMPLE case folding to avoid changing the length of the string, which
// might result in offsets being shifted.
$mode = \defined('MB_CASE_FOLD_SIMPLE') ? \MB_CASE_FOLD_SIMPLE : \MB_CASE_LOWER;
$s = mb_convert_case($s, $mode, 'UTF-8');
$needle = mb_convert_case($needle, $mode, 'UTF-8');
if (!\defined('MB_CASE_FOLD_SIMPLE')) {
$s = str_replace(self::CASE_FOLD[0], self::CASE_FOLD[1], $s);
$needle = str_replace(self::CASE_FOLD[0], self::CASE_FOLD[1], $needle);
}
}
if ($reverse) {
$needlePos = strrpos($s, $needle);
} else {
$needlePos = strpos($s, $needle);
}
return false !== $needlePos ? self::grapheme_strlen(substr($s, 0, $needlePos)) + $offset : false;
}
}