271 lines
7.9 KiB
PHP
271 lines
7.9 KiB
PHP
<?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\String;
|
|
|
|
use Symfony\Component\String\Exception\ExceptionInterface;
|
|
use Symfony\Component\String\Exception\InvalidArgumentException;
|
|
|
|
/**
|
|
* Represents a string of Unicode code points encoded as UTF-8.
|
|
*
|
|
* @author Nicolas Grekas <p@tchwork.com>
|
|
* @author Hugo Hamon <hugohamon@neuf.fr>
|
|
*
|
|
* @throws ExceptionInterface
|
|
*/
|
|
class CodePointString extends AbstractUnicodeString
|
|
{
|
|
public function __construct(string $string = '')
|
|
{
|
|
if ('' !== $string && !preg_match('//u', $string)) {
|
|
throw new InvalidArgumentException('Invalid UTF-8 string.');
|
|
}
|
|
|
|
$this->string = $string;
|
|
}
|
|
|
|
public function append(string ...$suffix): AbstractString
|
|
{
|
|
$str = clone $this;
|
|
$str->string .= 1 >= \count($suffix) ? ($suffix[0] ?? '') : implode('', $suffix);
|
|
|
|
if (!preg_match('//u', $str->string)) {
|
|
throw new InvalidArgumentException('Invalid UTF-8 string.');
|
|
}
|
|
|
|
return $str;
|
|
}
|
|
|
|
public function chunk(int $length = 1): array
|
|
{
|
|
if (1 > $length) {
|
|
throw new InvalidArgumentException('The chunk length must be greater than zero.');
|
|
}
|
|
|
|
if ('' === $this->string) {
|
|
return [];
|
|
}
|
|
|
|
$rx = '/(';
|
|
while (65535 < $length) {
|
|
$rx .= '.{65535}';
|
|
$length -= 65535;
|
|
}
|
|
$rx .= '.{'.$length.'})/us';
|
|
|
|
$str = clone $this;
|
|
$chunks = [];
|
|
|
|
foreach (preg_split($rx, $this->string, -1, \PREG_SPLIT_DELIM_CAPTURE | \PREG_SPLIT_NO_EMPTY) as $chunk) {
|
|
$str->string = $chunk;
|
|
$chunks[] = clone $str;
|
|
}
|
|
|
|
return $chunks;
|
|
}
|
|
|
|
public function codePointsAt(int $offset): array
|
|
{
|
|
$str = $offset ? $this->slice($offset, 1) : $this;
|
|
|
|
return '' === $str->string ? [] : [mb_ord($str->string, 'UTF-8')];
|
|
}
|
|
|
|
public function endsWith($suffix): bool
|
|
{
|
|
if ($suffix instanceof AbstractString) {
|
|
$suffix = $suffix->string;
|
|
} elseif (\is_array($suffix) || $suffix instanceof \Traversable) {
|
|
return parent::endsWith($suffix);
|
|
} else {
|
|
$suffix = (string) $suffix;
|
|
}
|
|
|
|
if ('' === $suffix || !preg_match('//u', $suffix)) {
|
|
return false;
|
|
}
|
|
|
|
if ($this->ignoreCase) {
|
|
return preg_match('{'.preg_quote($suffix).'$}iuD', $this->string);
|
|
}
|
|
|
|
return \strlen($this->string) >= \strlen($suffix) && 0 === substr_compare($this->string, $suffix, -\strlen($suffix));
|
|
}
|
|
|
|
public function equalsTo($string): bool
|
|
{
|
|
if ($string instanceof AbstractString) {
|
|
$string = $string->string;
|
|
} elseif (\is_array($string) || $string instanceof \Traversable) {
|
|
return parent::equalsTo($string);
|
|
} else {
|
|
$string = (string) $string;
|
|
}
|
|
|
|
if ('' !== $string && $this->ignoreCase) {
|
|
return \strlen($string) === \strlen($this->string) && 0 === mb_stripos($this->string, $string, 0, 'UTF-8');
|
|
}
|
|
|
|
return $string === $this->string;
|
|
}
|
|
|
|
public function indexOf($needle, int $offset = 0): ?int
|
|
{
|
|
if ($needle instanceof AbstractString) {
|
|
$needle = $needle->string;
|
|
} elseif (\is_array($needle) || $needle instanceof \Traversable) {
|
|
return parent::indexOf($needle, $offset);
|
|
} else {
|
|
$needle = (string) $needle;
|
|
}
|
|
|
|
if ('' === $needle) {
|
|
return null;
|
|
}
|
|
|
|
$i = $this->ignoreCase ? mb_stripos($this->string, $needle, $offset, 'UTF-8') : mb_strpos($this->string, $needle, $offset, 'UTF-8');
|
|
|
|
return false === $i ? null : $i;
|
|
}
|
|
|
|
public function indexOfLast($needle, int $offset = 0): ?int
|
|
{
|
|
if ($needle instanceof AbstractString) {
|
|
$needle = $needle->string;
|
|
} elseif (\is_array($needle) || $needle instanceof \Traversable) {
|
|
return parent::indexOfLast($needle, $offset);
|
|
} else {
|
|
$needle = (string) $needle;
|
|
}
|
|
|
|
if ('' === $needle) {
|
|
return null;
|
|
}
|
|
|
|
$i = $this->ignoreCase ? mb_strripos($this->string, $needle, $offset, 'UTF-8') : mb_strrpos($this->string, $needle, $offset, 'UTF-8');
|
|
|
|
return false === $i ? null : $i;
|
|
}
|
|
|
|
public function length(): int
|
|
{
|
|
return mb_strlen($this->string, 'UTF-8');
|
|
}
|
|
|
|
public function prepend(string ...$prefix): AbstractString
|
|
{
|
|
$str = clone $this;
|
|
$str->string = (1 >= \count($prefix) ? ($prefix[0] ?? '') : implode('', $prefix)).$this->string;
|
|
|
|
if (!preg_match('//u', $str->string)) {
|
|
throw new InvalidArgumentException('Invalid UTF-8 string.');
|
|
}
|
|
|
|
return $str;
|
|
}
|
|
|
|
public function replace(string $from, string $to): AbstractString
|
|
{
|
|
$str = clone $this;
|
|
|
|
if ('' === $from || !preg_match('//u', $from)) {
|
|
return $str;
|
|
}
|
|
|
|
if ('' !== $to && !preg_match('//u', $to)) {
|
|
throw new InvalidArgumentException('Invalid UTF-8 string.');
|
|
}
|
|
|
|
if ($this->ignoreCase) {
|
|
$str->string = implode($to, preg_split('{'.preg_quote($from).'}iuD', $this->string));
|
|
} else {
|
|
$str->string = str_replace($from, $to, $this->string);
|
|
}
|
|
|
|
return $str;
|
|
}
|
|
|
|
public function slice(int $start = 0, int $length = null): AbstractString
|
|
{
|
|
$str = clone $this;
|
|
$str->string = mb_substr($this->string, $start, $length, 'UTF-8');
|
|
|
|
return $str;
|
|
}
|
|
|
|
public function splice(string $replacement, int $start = 0, int $length = null): AbstractString
|
|
{
|
|
if (!preg_match('//u', $replacement)) {
|
|
throw new InvalidArgumentException('Invalid UTF-8 string.');
|
|
}
|
|
|
|
$str = clone $this;
|
|
$start = $start ? \strlen(mb_substr($this->string, 0, $start, 'UTF-8')) : 0;
|
|
$length = $length ? \strlen(mb_substr($this->string, $start, $length, 'UTF-8')) : $length;
|
|
$str->string = substr_replace($this->string, $replacement, $start, $length ?? \PHP_INT_MAX);
|
|
|
|
return $str;
|
|
}
|
|
|
|
public function split(string $delimiter, int $limit = null, int $flags = null): array
|
|
{
|
|
if (1 > $limit = $limit ?? \PHP_INT_MAX) {
|
|
throw new InvalidArgumentException('Split limit must be a positive integer.');
|
|
}
|
|
|
|
if ('' === $delimiter) {
|
|
throw new InvalidArgumentException('Split delimiter is empty.');
|
|
}
|
|
|
|
if (null !== $flags) {
|
|
return parent::split($delimiter.'u', $limit, $flags);
|
|
}
|
|
|
|
if (!preg_match('//u', $delimiter)) {
|
|
throw new InvalidArgumentException('Split delimiter is not a valid UTF-8 string.');
|
|
}
|
|
|
|
$str = clone $this;
|
|
$chunks = $this->ignoreCase
|
|
? preg_split('{'.preg_quote($delimiter).'}iuD', $this->string, $limit)
|
|
: explode($delimiter, $this->string, $limit);
|
|
|
|
foreach ($chunks as &$chunk) {
|
|
$str->string = $chunk;
|
|
$chunk = clone $str;
|
|
}
|
|
|
|
return $chunks;
|
|
}
|
|
|
|
public function startsWith($prefix): bool
|
|
{
|
|
if ($prefix instanceof AbstractString) {
|
|
$prefix = $prefix->string;
|
|
} elseif (\is_array($prefix) || $prefix instanceof \Traversable) {
|
|
return parent::startsWith($prefix);
|
|
} else {
|
|
$prefix = (string) $prefix;
|
|
}
|
|
|
|
if ('' === $prefix || !preg_match('//u', $prefix)) {
|
|
return false;
|
|
}
|
|
|
|
if ($this->ignoreCase) {
|
|
return 0 === mb_stripos($this->string, $prefix, 0, 'UTF-8');
|
|
}
|
|
|
|
return 0 === strncmp($this->string, $prefix, \strlen($prefix));
|
|
}
|
|
}
|