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Exception 3 years ago Inflector 3 years ago Resources 3 years ago Slugger 3 years ago AbstractString.php 3 years ago AbstractUnicodeString.php 3 years ago ByteString.php 3 years ago CodePointString.php 3 years ago LazyString.php 3 years ago UnicodeString.php 3 years ago

UnicodeString.php

303 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	*/
31	class UnicodeString extends AbstractUnicodeString
32	{
33	public function __construct(string $string = '')
34	{
35	$this->string = \normalizer_is_normalized($string) ? $string : \normalizer_normalize($string);
36	if (\false === $this->string) {
37	throw new InvalidArgumentException('Invalid UTF-8 string.');
38	}
39	}
40	public function append(string ...$suffix) : AbstractString
41	{
42	$str = clone $this;
43	$str->string = $this->string . (1 >= \count($suffix) ? $suffix[0] ?? '' : \implode('', $suffix));
44	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
45	if (\false === $str->string) {
46	throw new InvalidArgumentException('Invalid UTF-8 string.');
47	}
48	return $str;
49	}
50	public function chunk(int $length = 1) : array
51	{
52	if (1 > $length) {
53	throw new InvalidArgumentException('The chunk length must be greater than zero.');
54	}
55	if ('' === $this->string) {
56	return [];
57	}
58	$rx = '/(';
59	while (65535 < $length) {
60	$rx .= '\\X{65535}';
61	$length -= 65535;
62	}
63	$rx .= '\\X{' . $length . '})/u';
64	$str = clone $this;
65	$chunks = [];
66	foreach (\preg_split($rx, $this->string, -1, \PREG_SPLIT_DELIM_CAPTURE \| \PREG_SPLIT_NO_EMPTY) as $chunk) {
67	$str->string = $chunk;
68	$chunks[] = clone $str;
69	}
70	return $chunks;
71	}
72	public function endsWith($suffix) : bool
73	{
74	if ($suffix instanceof AbstractString) {
75	$suffix = $suffix->string;
76	} elseif (\is_array($suffix) \|\| $suffix instanceof \Traversable) {
77	return parent::endsWith($suffix);
78	} else {
79	$suffix = (string) $suffix;
80	}
81	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
82	\normalizer_is_normalized($suffix, $form) ?: ($suffix = \normalizer_normalize($suffix, $form));
83	if ('' === $suffix \|\| \false === $suffix) {
84	return \false;
85	}
86	if ($this->ignoreCase) {
87	return 0 === \mb_stripos(\grapheme_extract($this->string, \strlen($suffix), \GRAPHEME_EXTR_MAXBYTES, \strlen($this->string) - \strlen($suffix)), $suffix, 0, 'UTF-8');
88	}
89	return $suffix === \grapheme_extract($this->string, \strlen($suffix), \GRAPHEME_EXTR_MAXBYTES, \strlen($this->string) - \strlen($suffix));
90	}
91	public function equalsTo($string) : bool
92	{
93	if ($string instanceof AbstractString) {
94	$string = $string->string;
95	} elseif (\is_array($string) \|\| $string instanceof \Traversable) {
96	return parent::equalsTo($string);
97	} else {
98	$string = (string) $string;
99	}
100	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
101	\normalizer_is_normalized($string, $form) ?: ($string = \normalizer_normalize($string, $form));
102	if ('' !== $string && \false !== $string && $this->ignoreCase) {
103	return \strlen($string) === \strlen($this->string) && 0 === \mb_stripos($this->string, $string, 0, 'UTF-8');
104	}
105	return $string === $this->string;
106	}
107	public function indexOf($needle, int $offset = 0) : ?int
108	{
109	if ($needle instanceof AbstractString) {
110	$needle = $needle->string;
111	} elseif (\is_array($needle) \|\| $needle instanceof \Traversable) {
112	return parent::indexOf($needle, $offset);
113	} else {
114	$needle = (string) $needle;
115	}
116	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
117	\normalizer_is_normalized($needle, $form) ?: ($needle = \normalizer_normalize($needle, $form));
118	if ('' === $needle \|\| \false === $needle) {
119	return null;
120	}
121	try {
122	$i = $this->ignoreCase ? \grapheme_stripos($this->string, $needle, $offset) : \grapheme_strpos($this->string, $needle, $offset);
123	} catch (\ValueError $e) {
124	return null;
125	}
126	return \false === $i ? null : $i;
127	}
128	public function indexOfLast($needle, int $offset = 0) : ?int
129	{
130	if ($needle instanceof AbstractString) {
131	$needle = $needle->string;
132	} elseif (\is_array($needle) \|\| $needle instanceof \Traversable) {
133	return parent::indexOfLast($needle, $offset);
134	} else {
135	$needle = (string) $needle;
136	}
137	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
138	\normalizer_is_normalized($needle, $form) ?: ($needle = \normalizer_normalize($needle, $form));
139	if ('' === $needle \|\| \false === $needle) {
140	return null;
141	}
142	$string = $this->string;
143	if (0 > $offset) {
144	// workaround https://bugs.php.net/74264
145	if (0 > ($offset += \grapheme_strlen($needle))) {
146	$string = \grapheme_substr($string, 0, $offset);
147	}
148	$offset = 0;
149	}
150	$i = $this->ignoreCase ? \grapheme_strripos($string, $needle, $offset) : \grapheme_strrpos($string, $needle, $offset);
151	return \false === $i ? null : $i;
152	}
153	public function join(array $strings, string $lastGlue = null) : AbstractString
154	{
155	$str = parent::join($strings, $lastGlue);
156	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
157	return $str;
158	}
159	public function length() : int
160	{
161	return \grapheme_strlen($this->string);
162	}
163	/**
164	* @return static
165	*/
166	public function normalize(int $form = self::NFC) : parent
167	{
168	$str = clone $this;
169	if (\in_array($form, [self::NFC, self::NFKC], \true)) {
170	\normalizer_is_normalized($str->string, $form) ?: ($str->string = \normalizer_normalize($str->string, $form));
171	} elseif (!\in_array($form, [self::NFD, self::NFKD], \true)) {
172	throw new InvalidArgumentException('Unsupported normalization form.');
173	} elseif (!\normalizer_is_normalized($str->string, $form)) {
174	$str->string = \normalizer_normalize($str->string, $form);
175	$str->ignoreCase = null;
176	}
177	return $str;
178	}
179	public function prepend(string ...$prefix) : AbstractString
180	{
181	$str = clone $this;
182	$str->string = (1 >= \count($prefix) ? $prefix[0] ?? '' : \implode('', $prefix)) . $this->string;
183	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
184	if (\false === $str->string) {
185	throw new InvalidArgumentException('Invalid UTF-8 string.');
186	}
187	return $str;
188	}
189	public function replace(string $from, string $to) : AbstractString
190	{
191	$str = clone $this;
192	\normalizer_is_normalized($from) ?: ($from = \normalizer_normalize($from));
193	if ('' !== $from && \false !== $from) {
194	$tail = $str->string;
195	$result = '';
196	$indexOf = $this->ignoreCase ? 'grapheme_stripos' : 'grapheme_strpos';
197	while ('' !== $tail && \false !== ($i = $indexOf($tail, $from))) {
198	$slice = \grapheme_substr($tail, 0, $i);
199	$result .= $slice . $to;
200	$tail = \substr($tail, \strlen($slice) + \strlen($from));
201	}
202	$str->string = $result . $tail;
203	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
204	if (\false === $str->string) {
205	throw new InvalidArgumentException('Invalid UTF-8 string.');
206	}
207	}
208	return $str;
209	}
210	public function replaceMatches(string $fromRegexp, $to) : AbstractString
211	{
212	$str = parent::replaceMatches($fromRegexp, $to);
213	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
214	return $str;
215	}
216	public function slice(int $start = 0, int $length = null) : AbstractString
217	{
218	$str = clone $this;
219	if (\PHP_VERSION_ID < 80000 && 0 > $start && \grapheme_strlen($this->string) < -$start) {
220	$start = 0;
221	}
222	$str->string = (string) \grapheme_substr($this->string, $start, $length ?? 2147483647);
223	return $str;
224	}
225	public function splice(string $replacement, int $start = 0, int $length = null) : AbstractString
226	{
227	$str = clone $this;
228	if (\PHP_VERSION_ID < 80000 && 0 > $start && \grapheme_strlen($this->string) < -$start) {
229	$start = 0;
230	}
231	$start = $start ? \strlen(\grapheme_substr($this->string, 0, $start)) : 0;
232	$length = $length ? \strlen(\grapheme_substr($this->string, $start, $length ?? 2147483647)) : $length;
233	$str->string = \substr_replace($this->string, $replacement, $start, $length ?? 2147483647);
234	\normalizer_is_normalized($str->string) ?: ($str->string = \normalizer_normalize($str->string));
235	if (\false === $str->string) {
236	throw new InvalidArgumentException('Invalid UTF-8 string.');
237	}
238	return $str;
239	}
240	public function split(string $delimiter, int $limit = null, int $flags = null) : array
241	{
242	if (1 > ($limit = $limit ?? 2147483647)) {
243	throw new InvalidArgumentException('Split limit must be a positive integer.');
244	}
245	if ('' === $delimiter) {
246	throw new InvalidArgumentException('Split delimiter is empty.');
247	}
248	if (null !== $flags) {
249	return parent::split($delimiter . 'u', $limit, $flags);
250	}
251	\normalizer_is_normalized($delimiter) ?: ($delimiter = \normalizer_normalize($delimiter));
252	if (\false === $delimiter) {
253	throw new InvalidArgumentException('Split delimiter is not a valid UTF-8 string.');
254	}
255	$str = clone $this;
256	$tail = $this->string;
257	$chunks = [];
258	$indexOf = $this->ignoreCase ? 'grapheme_stripos' : 'grapheme_strpos';
259	while (1 < $limit && \false !== ($i = $indexOf($tail, $delimiter))) {
260	$str->string = \grapheme_substr($tail, 0, $i);
261	$chunks[] = clone $str;
262	$tail = \substr($tail, \strlen($str->string) + \strlen($delimiter));
263	--$limit;
264	}
265	$str->string = $tail;
266	$chunks[] = clone $str;
267	return $chunks;
268	}
269	public function startsWith($prefix) : bool
270	{
271	if ($prefix instanceof AbstractString) {
272	$prefix = $prefix->string;
273	} elseif (\is_array($prefix) \|\| $prefix instanceof \Traversable) {
274	return parent::startsWith($prefix);
275	} else {
276	$prefix = (string) $prefix;
277	}
278	$form = null === $this->ignoreCase ? \Normalizer::NFD : \Normalizer::NFC;
279	\normalizer_is_normalized($prefix, $form) ?: ($prefix = \normalizer_normalize($prefix, $form));
280	if ('' === $prefix \|\| \false === $prefix) {
281	return \false;
282	}
283	if ($this->ignoreCase) {
284	return 0 === \mb_stripos(\grapheme_extract($this->string, \strlen($prefix), \GRAPHEME_EXTR_MAXBYTES), $prefix, 0, 'UTF-8');
285	}
286	return $prefix === \grapheme_extract($this->string, \strlen($prefix), \GRAPHEME_EXTR_MAXBYTES);
287	}
288	public function __wakeup()
289	{
290	if (!\is_string($this->string)) {
291	throw new \BadMethodCallException('Cannot unserialize ' . __CLASS__);
292	}
293	\normalizer_is_normalized($this->string) ?: ($this->string = \normalizer_normalize($this->string));
294	}
295	public function __clone()
296	{
297	if (null === $this->ignoreCase) {
298	\normalizer_is_normalized($this->string) ?: ($this->string = \normalizer_normalize($this->string));
299	}
300	$this->ignoreCase = \false;
301	}
302	}
303