wp-stateless / vendor / symfony / string / AbstractString.php

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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
12	namespace Symfony\Component\String;
13
14	use Symfony\Component\String\Exception\ExceptionInterface;
15	use Symfony\Component\String\Exception\InvalidArgumentException;
16	use Symfony\Component\String\Exception\RuntimeException;
17
18	/**
19	* Represents a string of abstract characters.
20	*
21	* Unicode defines 3 types of "characters" (bytes, code points and grapheme clusters).
22	* This class is the abstract type to use as a type-hint when the logic you want to
23	* implement doesn't care about the exact variant it deals with.
24	*
25	* @author Nicolas Grekas <p@tchwork.com>
26	* @author Hugo Hamon <hugohamon@neuf.fr>
27	*
28	* @throws ExceptionInterface
29	*/
30	abstract class AbstractString implements \Stringable, \JsonSerializable
31	{
32	public const PREG_PATTERN_ORDER = PREG_PATTERN_ORDER;
33	public const PREG_SET_ORDER = PREG_SET_ORDER;
34	public const PREG_OFFSET_CAPTURE = PREG_OFFSET_CAPTURE;
35	public const PREG_UNMATCHED_AS_NULL = PREG_UNMATCHED_AS_NULL;
36
37	public const PREG_SPLIT = 0;
38	public const PREG_SPLIT_NO_EMPTY = PREG_SPLIT_NO_EMPTY;
39	public const PREG_SPLIT_DELIM_CAPTURE = PREG_SPLIT_DELIM_CAPTURE;
40	public const PREG_SPLIT_OFFSET_CAPTURE = PREG_SPLIT_OFFSET_CAPTURE;
41
42	protected $string = '';
43	protected $ignoreCase = false;
44
45	abstract public function __construct(string $string = '');
46
47	/**
48	* Unwraps instances of AbstractString back to strings.
49	*
50	* @return string[]\|array
51	*/
52	public static function unwrap(array $values): array
53	{
54	foreach ($values as $k => $v) {
55	if ($v instanceof self) {
56	$values[$k] = $v->__toString();
57	} elseif (\is_array($v) && $values[$k] !== $v = static::unwrap($v)) {
58	$values[$k] = $v;
59	}
60	}
61
62	return $values;
63	}
64
65	/**
66	* Wraps (and normalizes) strings in instances of AbstractString.
67	*
68	* @return static[]\|array
69	*/
70	public static function wrap(array $values): array
71	{
72	$i = 0;
73	$keys = null;
74
75	foreach ($values as $k => $v) {
76	if (\is_string($k) && '' !== $k && $k !== $j = (string) new static($k)) {
77	$keys = $keys ?? array_keys($values);
78	$keys[$i] = $j;
79	}
80
81	if (\is_string($v)) {
82	$values[$k] = new static($v);
83	} elseif (\is_array($v) && $values[$k] !== $v = static::wrap($v)) {
84	$values[$k] = $v;
85	}
86
87	++$i;
88	}
89
90	return null !== $keys ? array_combine($keys, $values) : $values;
91	}
92
93	/**
94	* @param string\|string[] $needle
95	*
96	* @return static
97	*/
98	public function after($needle, bool $includeNeedle = false, int $offset = 0): self
99	{
100	$str = clone $this;
101	$str->string = '';
102	$i = PHP_INT_MAX;
103
104	foreach ((array) $needle as $n) {
105	$n = (string) $n;
106	$j = $this->indexOf($n, $offset);
107
108	if (null !== $j && $j < $i) {
109	$i = $j;
110	$str->string = $n;
111	}
112	}
113
114	if (PHP_INT_MAX === $i) {
115	return $str;
116	}
117
118	if (!$includeNeedle) {
119	$i += $str->length();
120	}
121
122	return $this->slice($i);
123	}
124
125	/**
126	* @param string\|string[] $needle
127	*
128	* @return static
129	*/
130	public function afterLast($needle, bool $includeNeedle = false, int $offset = 0): self
131	{
132	$str = clone $this;
133	$str->string = '';
134	$i = null;
135
136	foreach ((array) $needle as $n) {
137	$n = (string) $n;
138	$j = $this->indexOfLast($n, $offset);
139
140	if (null !== $j && $j >= $i) {
141	$i = $offset = $j;
142	$str->string = $n;
143	}
144	}
145
146	if (null === $i) {
147	return $str;
148	}
149
150	if (!$includeNeedle) {
151	$i += $str->length();
152	}
153
154	return $this->slice($i);
155	}
156
157	/**
158	* @return static
159	*/
160	abstract public function append(string ...$suffix): self;
161
162	/**
163	* @param string\|string[] $needle
164	*
165	* @return static
166	*/
167	public function before($needle, bool $includeNeedle = false, int $offset = 0): self
168	{
169	$str = clone $this;
170	$str->string = '';
171	$i = PHP_INT_MAX;
172
173	foreach ((array) $needle as $n) {
174	$n = (string) $n;
175	$j = $this->indexOf($n, $offset);
176
177	if (null !== $j && $j < $i) {
178	$i = $j;
179	$str->string = $n;
180	}
181	}
182
183	if (PHP_INT_MAX === $i) {
184	return $str;
185	}
186
187	if ($includeNeedle) {
188	$i += $str->length();
189	}
190
191	return $this->slice(0, $i);
192	}
193
194	/**
195	* @param string\|string[] $needle
196	*
197	* @return static
198	*/
199	public function beforeLast($needle, bool $includeNeedle = false, int $offset = 0): self
200	{
201	$str = clone $this;
202	$str->string = '';
203	$i = null;
204
205	foreach ((array) $needle as $n) {
206	$n = (string) $n;
207	$j = $this->indexOfLast($n, $offset);
208
209	if (null !== $j && $j >= $i) {
210	$i = $offset = $j;
211	$str->string = $n;
212	}
213	}
214
215	if (null === $i) {
216	return $str;
217	}
218
219	if ($includeNeedle) {
220	$i += $str->length();
221	}
222
223	return $this->slice(0, $i);
224	}
225
226	/**
227	* @return int[]
228	*/
229	public function bytesAt(int $offset): array
230	{
231	$str = $this->slice($offset, 1);
232
233	return '' === $str->string ? [] : array_values(unpack('C*', $str->string));
234	}
235
236	/**
237	* @return static
238	*/
239	abstract public function camel(): self;
240
241	/**
242	* @return static[]
243	*/
244	abstract public function chunk(int $length = 1): array;
245
246	/**
247	* @return static
248	*/
249	public function collapseWhitespace(): self
250	{
251	$str = clone $this;
252	$str->string = trim(preg_replace('/(?:\s{2,}+\|[^\S ])/', ' ', $str->string));
253
254	return $str;
255	}
256
257	/**
258	* @param string\|string[] $needle
259	*/
260	public function containsAny($needle): bool
261	{
262	return null !== $this->indexOf($needle);
263	}
264
265	/**
266	* @param string\|string[] $suffix
267	*/
268	public function endsWith($suffix): bool
269	{
270	if (!\is_array($suffix) && !$suffix instanceof \Traversable) {
271	throw new \TypeError(sprintf('Method "%s()" must be overridden by class "%s" to deal with non-iterable values.', __FUNCTION__, static::class));
272	}
273
274	foreach ($suffix as $s) {
275	if ($this->endsWith((string) $s)) {
276	return true;
277	}
278	}
279
280	return false;
281	}
282
283	/**
284	* @return static
285	*/
286	public function ensureEnd(string $suffix): self
287	{
288	if (!$this->endsWith($suffix)) {
289	return $this->append($suffix);
290	}
291
292	$suffix = preg_quote($suffix);
293	$regex = '{('.$suffix.')(?:'.$suffix.')++$}D';
294
295	return $this->replaceMatches($regex.($this->ignoreCase ? 'i' : ''), '$1');
296	}
297
298	/**
299	* @return static
300	*/
301	public function ensureStart(string $prefix): self
302	{
303	$prefix = new static($prefix);
304
305	if (!$this->startsWith($prefix)) {
306	return $this->prepend($prefix);
307	}
308
309	$str = clone $this;
310	$i = $prefixLen = $prefix->length();
311
312	while ($this->indexOf($prefix, $i) === $i) {
313	$str = $str->slice($prefixLen);
314	$i += $prefixLen;
315	}
316
317	return $str;
318	}
319
320	/**
321	* @param string\|string[] $string
322	*/
323	public function equalsTo($string): bool
324	{
325	if (!\is_array($string) && !$string instanceof \Traversable) {
326	throw new \TypeError(sprintf('Method "%s()" must be overridden by class "%s" to deal with non-iterable values.', __FUNCTION__, static::class));
327	}
328
329	foreach ($string as $s) {
330	if ($this->equalsTo((string) $s)) {
331	return true;
332	}
333	}
334
335	return false;
336	}
337
338	/**
339	* @return static
340	*/
341	abstract public function folded(): self;
342
343	/**
344	* @return static
345	*/
346	public function ignoreCase(): self
347	{
348	$str = clone $this;
349	$str->ignoreCase = true;
350
351	return $str;
352	}
353
354	/**
355	* @param string\|string[] $needle
356	*/
357	public function indexOf($needle, int $offset = 0): ?int
358	{
359	if (!\is_array($needle) && !$needle instanceof \Traversable) {
360	throw new \TypeError(sprintf('Method "%s()" must be overridden by class "%s" to deal with non-iterable values.', __FUNCTION__, static::class));
361	}
362
363	$i = PHP_INT_MAX;
364
365	foreach ($needle as $n) {
366	$j = $this->indexOf((string) $n, $offset);
367
368	if (null !== $j && $j < $i) {
369	$i = $j;
370	}
371	}
372
373	return PHP_INT_MAX === $i ? null : $i;
374	}
375
376	/**
377	* @param string\|string[] $needle
378	*/
379	public function indexOfLast($needle, int $offset = 0): ?int
380	{
381	if (!\is_array($needle) && !$needle instanceof \Traversable) {
382	throw new \TypeError(sprintf('Method "%s()" must be overridden by class "%s" to deal with non-iterable values.', __FUNCTION__, static::class));
383	}
384
385	$i = null;
386
387	foreach ($needle as $n) {
388	$j = $this->indexOfLast((string) $n, $offset);
389
390	if (null !== $j && $j >= $i) {
391	$i = $offset = $j;
392	}
393	}
394
395	return $i;
396	}
397
398	public function isEmpty(): bool
399	{
400	return '' === $this->string;
401	}
402
403	/**
404	* @return static
405	*/
406	abstract public function join(array $strings, string $lastGlue = null): self;
407
408	public function jsonSerialize(): string
409	{
410	return $this->string;
411	}
412
413	abstract public function length(): int;
414
415	/**
416	* @return static
417	*/
418	abstract public function lower(): self;
419
420	/**
421	* Matches the string using a regular expression.
422	*
423	* Pass PREG_PATTERN_ORDER or PREG_SET_ORDER as $flags to get all occurrences matching the regular expression.
424	*
425	* @return array All matches in a multi-dimensional array ordered according to flags
426	*/
427	abstract public function match(string $regexp, int $flags = 0, int $offset = 0): array;
428
429	/**
430	* @return static
431	*/
432	abstract public function padBoth(int $length, string $padStr = ' '): self;
433
434	/**
435	* @return static
436	*/
437	abstract public function padEnd(int $length, string $padStr = ' '): self;
438
439	/**
440	* @return static
441	*/
442	abstract public function padStart(int $length, string $padStr = ' '): self;
443
444	/**
445	* @return static
446	*/
447	abstract public function prepend(string ...$prefix): self;
448
449	/**
450	* @return static
451	*/
452	public function repeat(int $multiplier): self
453	{
454	if (0 > $multiplier) {
455	throw new InvalidArgumentException(sprintf('Multiplier must be positive, %d given.', $multiplier));
456	}
457
458	$str = clone $this;
459	$str->string = str_repeat($str->string, $multiplier);
460
461	return $str;
462	}
463
464	/**
465	* @return static
466	*/
467	abstract public function replace(string $from, string $to): self;
468
469	/**
470	* @param string\|callable $to
471	*
472	* @return static
473	*/
474	abstract public function replaceMatches(string $fromRegexp, $to): self;
475
476	/**
477	* @return static
478	*/
479	abstract public function reverse(): self;
480
481	/**
482	* @return static
483	*/
484	abstract public function slice(int $start = 0, int $length = null): self;
485
486	/**
487	* @return static
488	*/
489	abstract public function snake(): self;
490
491	/**
492	* @return static
493	*/
494	abstract public function splice(string $replacement, int $start = 0, int $length = null): self;
495
496	/**
497	* @return static[]
498	*/
499	public function split(string $delimiter, int $limit = null, int $flags = null): array
500	{
501	if (null === $flags) {
502	throw new \TypeError('Split behavior when $flags is null must be implemented by child classes.');
503	}
504
505	if ($this->ignoreCase) {
506	$delimiter .= 'i';
507	}
508
509	set_error_handler(static function ($t, $m) { throw new InvalidArgumentException($m); });
510
511	try {
512	if (false === $chunks = preg_split($delimiter, $this->string, $limit, $flags)) {
513	$lastError = preg_last_error();
514
515	foreach (get_defined_constants(true)['pcre'] as $k => $v) {
516	if ($lastError === $v && '_ERROR' === substr($k, -6)) {
517	throw new RuntimeException('Splitting failed with '.$k.'.');
518	}
519	}
520
521	throw new RuntimeException('Splitting failed with unknown error code.');
522	}
523	} finally {
524	restore_error_handler();
525	}
526
527	$str = clone $this;
528
529	if (self::PREG_SPLIT_OFFSET_CAPTURE & $flags) {
530	foreach ($chunks as &$chunk) {
531	$str->string = $chunk[0];
532	$chunk[0] = clone $str;
533	}
534	} else {
535	foreach ($chunks as &$chunk) {
536	$str->string = $chunk;
537	$chunk = clone $str;
538	}
539	}
540
541	return $chunks;
542	}
543
544	/**
545	* @param string\|string[] $prefix
546	*/
547	public function startsWith($prefix): bool
548	{
549	if (!\is_array($prefix) && !$prefix instanceof \Traversable) {
550	throw new \TypeError(sprintf('Method "%s()" must be overridden by class "%s" to deal with non-iterable values.', __FUNCTION__, static::class));
551	}
552
553	foreach ($prefix as $prefix) {
554	if ($this->startsWith((string) $prefix)) {
555	return true;
556	}
557	}
558
559	return false;
560	}
561
562	/**
563	* @return static
564	*/
565	abstract public function title(bool $allWords = false): self;
566
567	public function toByteString(string $toEncoding = null): ByteString
568	{
569	$b = new ByteString();
570
571	$toEncoding = \in_array($toEncoding, ['utf8', 'utf-8', 'UTF8'], true) ? 'UTF-8' : $toEncoding;
572
573	if (null === $toEncoding \|\| $toEncoding === $fromEncoding = $this instanceof AbstractUnicodeString \|\| preg_match('//u', $b->string) ? 'UTF-8' : 'Windows-1252') {
574	$b->string = $this->string;
575
576	return $b;
577	}
578
579	set_error_handler(static function ($t, $m) { throw new InvalidArgumentException($m); });
580
581	try {
582	try {
583	$b->string = mb_convert_encoding($this->string, $toEncoding, 'UTF-8');
584	} catch (InvalidArgumentException $e) {
585	if (!\function_exists('iconv')) {
586	throw $e;
587	}
588
589	$b->string = iconv('UTF-8', $toEncoding, $this->string);
590	}
591	} finally {
592	restore_error_handler();
593	}
594
595	return $b;
596	}
597
598	public function toCodePointString(): CodePointString
599	{
600	return new CodePointString($this->string);
601	}
602
603	public function toString(): string
604	{
605	return $this->string;
606	}
607
608	public function toUnicodeString(): UnicodeString
609	{
610	return new UnicodeString($this->string);
611	}
612
613	/**
614	* @return static
615	*/
616	abstract public function trim(string $chars = " \t\n\r\0\x0B\x0C\u{A0}\u{FEFF}"): self;
617
618	/**
619	* @return static
620	*/
621	abstract public function trimEnd(string $chars = " \t\n\r\0\x0B\x0C\u{A0}\u{FEFF}"): self;
622
623	/**
624	* @return static
625	*/
626	abstract public function trimStart(string $chars = " \t\n\r\0\x0B\x0C\u{A0}\u{FEFF}"): self;
627
628	/**
629	* @return static
630	*/
631	public function truncate(int $length, string $ellipsis = '', bool $cut = true): self
632	{
633	$stringLength = $this->length();
634
635	if ($stringLength <= $length) {
636	return clone $this;
637	}
638
639	$ellipsisLength = '' !== $ellipsis ? (new static($ellipsis))->length() : 0;
640
641	if ($length < $ellipsisLength) {
642	$ellipsisLength = 0;
643	}
644
645	if (!$cut) {
646	if (null === $length = $this->indexOf([' ', "\r", "\n", "\t"], ($length ?: 1) - 1)) {
647	return clone $this;
648	}
649
650	$length += $ellipsisLength;
651	}
652
653	$str = $this->slice(0, $length - $ellipsisLength);
654
655	return $ellipsisLength ? $str->trimEnd()->append($ellipsis) : $str;
656	}
657
658	/**
659	* @return static
660	*/
661	abstract public function upper(): self;
662
663	/**
664	* Returns the printable length on a terminal.
665	*/
666	abstract public function width(bool $ignoreAnsiDecoration = true): int;
667
668	/**
669	* @return static
670	*/
671	public function wordwrap(int $width = 75, string $break = "\n", bool $cut = false): self
672	{
673	$lines = '' !== $break ? $this->split($break) : [clone $this];
674	$chars = [];
675	$mask = '';
676
677	if (1 === \count($lines) && '' === $lines[0]->string) {
678	return $lines[0];
679	}
680
681	foreach ($lines as $i => $line) {
682	if ($i) {
683	$chars[] = $break;
684	$mask .= '#';
685	}
686
687	foreach ($line->chunk() as $char) {
688	$chars[] = $char->string;
689	$mask .= ' ' === $char->string ? ' ' : '?';
690	}
691	}
692
693	$string = '';
694	$j = 0;
695	$b = $i = -1;
696	$mask = wordwrap($mask, $width, '#', $cut);
697
698	while (false !== $b = strpos($mask, '#', $b + 1)) {
699	for (++$i; $i < $b; ++$i) {
700	$string .= $chars[$j];
701	unset($chars[$j++]);
702	}
703
704	if ($break === $chars[$j] \|\| ' ' === $chars[$j]) {
705	unset($chars[$j++]);
706	}
707
708	$string .= $break;
709	}
710
711	$str = clone $this;
712	$str->string = $string.implode('', $chars);
713
714	return $str;
715	}
716
717	public function __sleep(): array
718	{
719	return ['string'];
720	}
721
722	public function __clone()
723	{
724	$this->ignoreCase = false;
725	}
726
727	public function __toString(): string
728	{
729	return $this->string;
730	}
731	}
732