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Exception 2 years ago Inflector 2 years ago Resources 2 years ago Slugger 2 years ago AbstractString.php 2 years ago AbstractUnicodeString.php 2 years ago ByteString.php 2 years ago CodePointString.php 2 years ago LazyString.php 2 years ago UnicodeString.php 2 years ago

UnicodeString.php

304 lines

1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <fabien@symfony.com>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11	namespace IAWP_SCOPED\Symfony\Component\String;
12
13	use IAWP_SCOPED\Symfony\Component\String\Exception\ExceptionInterface;
14	use IAWP_SCOPED\Symfony\Component\String\Exception\InvalidArgumentException;
15	/**
16	* Represents a string of Unicode grapheme clusters encoded as UTF-8.
17	*
18	* A letter followed by combining characters (accents typically) form what Unicode defines
19	* as a grapheme cluster: a character as humans mean it in written texts. This class knows
20	* about the concept and won't split a letter apart from its combining accents. It also
21	* ensures all string comparisons happen on their canonically-composed representation,
22	* ignoring e.g. the order in which accents are listed when a letter has many of them.
23	*
24	* @see https://unicode.org/reports/tr15/
25	*
26	* @author Nicolas Grekas <p@tchwork.com>
27	* @author Hugo Hamon <hugohamon@neuf.fr>
28	*
29	* @throws ExceptionInterface
30	* @internal
31	*/
32	class UnicodeString extends AbstractUnicodeString
33	{
34	public function __construct(string $string = '')
35	{
36	$this->string = \normalizer_is_normalized($string) ? $string : \normalizer_normalize($string);
37	if (\false === $this->string) {
38	throw new InvalidArgumentException('Invalid UTF-8 string.');
39	}
40	}
41	public function append(string ...$suffix) : AbstractString
42	{
43	$str = clone $this;
44	$str->string = $this->string . (1 >= \count($suffix) ? $suffix[0] ?? '' : \implode('', $suffix));
45	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
46	if (\false === $str->string) {
47	throw new InvalidArgumentException('Invalid UTF-8 string.');
48	}
49	return $str;
50	}
51	public function chunk(int $length = 1) : array
52	{
53	if (1 > $length) {
54	throw new InvalidArgumentException('The chunk length must be greater than zero.');
55	}
56	if ('' === $this->string) {
57	return [];
58	}
59	$rx = '/(';
60	while (65535 < $length) {
61	$rx .= '\\X{65535}';
62	$length -= 65535;
63	}
64	$rx .= '\\X{' . $length . '})/u';
65	$str = clone $this;
66	$chunks = [];
67	foreach (\preg_split($rx, $this->string, -1, \PREG_SPLIT_DELIM_CAPTURE \| \PREG_SPLIT_NO_EMPTY) as $chunk) {
68	$str->string = $chunk;
69	$chunks[] = clone $str;
70	}
71	return $chunks;
72	}
73	public function endsWith($suffix) : bool
74	{
75	if ($suffix instanceof AbstractString) {
76	$suffix = $suffix->string;
77	} elseif (\is_array($suffix) \|\| $suffix instanceof \Traversable) {
78	return parent::endsWith($suffix);
79	} else {
80	$suffix = (string) $suffix;
81	}
82	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
83	\normalizer_is_normalized($suffix, $form) ?: ($suffix = \normalizer_normalize($suffix, $form));
84	if ('' === $suffix \|\| \false === $suffix) {
85	return \false;
86	}
87	if ($this->ignoreCase) {
88	return 0 === \mb_stripos(\grapheme_extract($this->string, \strlen($suffix), \GRAPHEME_EXTR_MAXBYTES, \strlen($this->string) - \strlen($suffix)), $suffix, 0, 'UTF-8');
89	}
90	return $suffix === \grapheme_extract($this->string, \strlen($suffix), \GRAPHEME_EXTR_MAXBYTES, \strlen($this->string) - \strlen($suffix));
91	}
92	public function equalsTo($string) : bool
93	{
94	if ($string instanceof AbstractString) {
95	$string = $string->string;
96	} elseif (\is_array($string) \|\| $string instanceof \Traversable) {
97	return parent::equalsTo($string);
98	} else {
99	$string = (string) $string;
100	}
101	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
102	\normalizer_is_normalized($string, $form) ?: ($string = \normalizer_normalize($string, $form));
103	if ('' !== $string && \false !== $string && $this->ignoreCase) {
104	return \strlen($string) === \strlen($this->string) && 0 === \mb_stripos($this->string, $string, 0, 'UTF-8');
105	}
106	return $string === $this->string;
107	}
108	public function indexOf($needle, int $offset = 0) : ?int
109	{
110	if ($needle instanceof AbstractString) {
111	$needle = $needle->string;
112	} elseif (\is_array($needle) \|\| $needle instanceof \Traversable) {
113	return parent::indexOf($needle, $offset);
114	} else {
115	$needle = (string) $needle;
116	}
117	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
118	\normalizer_is_normalized($needle, $form) ?: ($needle = \normalizer_normalize($needle, $form));
119	if ('' === $needle \|\| \false === $needle) {
120	return null;
121	}
122	try {
123	$i = $this->ignoreCase ? \grapheme_stripos($this->string, $needle, $offset) : \grapheme_strpos($this->string, $needle, $offset);
124	} catch (\ValueError $e) {
125	return null;
126	}
127	return \false === $i ? null : $i;
128	}
129	public function indexOfLast($needle, int $offset = 0) : ?int
130	{
131	if ($needle instanceof AbstractString) {
132	$needle = $needle->string;
133	} elseif (\is_array($needle) \|\| $needle instanceof \Traversable) {
134	return parent::indexOfLast($needle, $offset);
135	} else {
136	$needle = (string) $needle;
137	}
138	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
139	\normalizer_is_normalized($needle, $form) ?: ($needle = \normalizer_normalize($needle, $form));
140	if ('' === $needle \|\| \false === $needle) {
141	return null;
142	}
143	$string = $this->string;
144	if (0 > $offset) {
145	// workaround https://bugs.php.net/74264
146	if (0 > ($offset += \grapheme_strlen($needle))) {
147	$string = \grapheme_substr($string, 0, $offset);
148	}
149	$offset = 0;
150	}
151	$i = $this->ignoreCase ? \grapheme_strripos($string, $needle, $offset) : \grapheme_strrpos($string, $needle, $offset);
152	return \false === $i ? null : $i;
153	}
154	public function join(array $strings, string $lastGlue = null) : AbstractString
155	{
156	$str = parent::join($strings, $lastGlue);
157	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
158	return $str;
159	}
160	public function length() : int
161	{
162	return \grapheme_strlen($this->string);
163	}
164	/**
165	* @return static
166	*/
167	public function normalize(int $form = self::NFC) : parent
168	{
169	$str = clone $this;
170	if (\in_array($form, [self::NFC, self::NFKC], \true)) {
171	\normalizer_is_normalized($str->string, $form) ?: ($str->string = \normalizer_normalize($str->string, $form));
172	} elseif (!\in_array($form, [self::NFD, self::NFKD], \true)) {
173	throw new InvalidArgumentException('Unsupported normalization form.');
174	} elseif (!\normalizer_is_normalized($str->string, $form)) {
175	$str->string = \normalizer_normalize($str->string, $form);
176	$str->ignoreCase = null;
177	}
178	return $str;
179	}
180	public function prepend(string ...$prefix) : AbstractString
181	{
182	$str = clone $this;
183	$str->string = (1 >= \count($prefix) ? $prefix[0] ?? '' : \implode('', $prefix)) . $this->string;
184	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
185	if (\false === $str->string) {
186	throw new InvalidArgumentException('Invalid UTF-8 string.');
187	}
188	return $str;
189	}
190	public function replace(string $from, string $to) : AbstractString
191	{
192	$str = clone $this;
193	\normalizer_is_normalized($from) ?: ($from = \normalizer_normalize($from));
194	if ('' !== $from && \false !== $from) {
195	$tail = $str->string;
196	$result = '';
197	$indexOf = $this->ignoreCase ? 'grapheme_stripos' : 'grapheme_strpos';
198	while ('' !== $tail && \false !== ($i = $indexOf($tail, $from))) {
199	$slice = \grapheme_substr($tail, 0, $i);
200	$result .= $slice . $to;
201	$tail = \substr($tail, \strlen($slice) + \strlen($from));
202	}
203	$str->string = $result . $tail;
204	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
205	if (\false === $str->string) {
206	throw new InvalidArgumentException('Invalid UTF-8 string.');
207	}
208	}
209	return $str;
210	}
211	public function replaceMatches(string $fromRegexp, $to) : AbstractString
212	{
213	$str = parent::replaceMatches($fromRegexp, $to);
214	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
215	return $str;
216	}
217	public function slice(int $start = 0, int $length = null) : AbstractString
218	{
219	$str = clone $this;
220	if (\PHP_VERSION_ID < 80000 && 0 > $start && \grapheme_strlen($this->string) < -$start) {
221	$start = 0;
222	}
223	$str->string = (string) \grapheme_substr($this->string, $start, $length ?? 2147483647);
224	return $str;
225	}
226	public function splice(string $replacement, int $start = 0, int $length = null) : AbstractString
227	{
228	$str = clone $this;
229	if (\PHP_VERSION_ID < 80000 && 0 > $start && \grapheme_strlen($this->string) < -$start) {
230	$start = 0;
231	}
232	$start = $start ? \strlen(\grapheme_substr($this->string, 0, $start)) : 0;
233	$length = $length ? \strlen(\grapheme_substr($this->string, $start, $length ?? 2147483647)) : $length;
234	$str->string = \substr_replace($this->string, $replacement, $start, $length ?? 2147483647);
235	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
236	if (\false === $str->string) {
237	throw new InvalidArgumentException('Invalid UTF-8 string.');
238	}
239	return $str;
240	}
241	public function split(string $delimiter, int $limit = null, int $flags = null) : array
242	{
243	if (1 > ($limit = $limit ?? 2147483647)) {
244	throw new InvalidArgumentException('Split limit must be a positive integer.');
245	}
246	if ('' === $delimiter) {
247	throw new InvalidArgumentException('Split delimiter is empty.');
248	}
249	if (null !== $flags) {
250	return parent::split($delimiter . 'u', $limit, $flags);
251	}
252	\normalizer_is_normalized($delimiter) ?: ($delimiter = \normalizer_normalize($delimiter));
253	if (\false === $delimiter) {
254	throw new InvalidArgumentException('Split delimiter is not a valid UTF-8 string.');
255	}
256	$str = clone $this;
257	$tail = $this->string;
258	$chunks = [];
259	$indexOf = $this->ignoreCase ? 'grapheme_stripos' : 'grapheme_strpos';
260	while (1 < $limit && \false !== ($i = $indexOf($tail, $delimiter))) {
261	$str->string = \grapheme_substr($tail, 0, $i);
262	$chunks[] = clone $str;
263	$tail = \substr($tail, \strlen($str->string) + \strlen($delimiter));
264	--$limit;
265	}
266	$str->string = $tail;
267	$chunks[] = clone $str;
268	return $chunks;
269	}
270	public function startsWith($prefix) : bool
271	{
272	if ($prefix instanceof AbstractString) {
273	$prefix = $prefix->string;
274	} elseif (\is_array($prefix) \|\| $prefix instanceof \Traversable) {
275	return parent::startsWith($prefix);
276	} else {
277	$prefix = (string) $prefix;
278	}
279	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
280	\normalizer_is_normalized($prefix, $form) ?: ($prefix = \normalizer_normalize($prefix, $form));
281	if ('' === $prefix \|\| \false === $prefix) {
282	return \false;
283	}
284	if ($this->ignoreCase) {
285	return 0 === \mb_stripos(\grapheme_extract($this->string, \strlen($prefix), \GRAPHEME_EXTR_MAXBYTES), $prefix, 0, 'UTF-8');
286	}
287	return $prefix === \grapheme_extract($this->string, \strlen($prefix), \GRAPHEME_EXTR_MAXBYTES);
288	}
289	public function __wakeup()
290	{
291	if (!\is_string($this->string)) {
292	throw new \BadMethodCallException('Cannot unserialize ' . __CLASS__);
293	}
294	\normalizer_is_normalized($this->string) ?: ($this->string = \normalizer_normalize($this->string));
295	}
296	public function __clone()
297	{
298	if (null === $this->ignoreCase) {
299	\normalizer_is_normalized($this->string) ?: ($this->string = \normalizer_normalize($this->string));
300	}
301	$this->ignoreCase = \false;
302	}
303	}
304