13672444747

Committed 05 Mar 2025 09:14AM UTC coverage: 55.726%. Remained the same

Build # 13672444747

Build Type

Pull #1084

github

Committed by

web-flow

Commit Message

Merge 135725e8f into 13a118a4d

Pull Request Pull Request #1084: [TASK] Extract value parsing functional tests (part 1)

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0.0

/src/Parsing/ParserState.php

<?php

declare(strict_types=1);

namespace Sabberworm\CSS\Parsing;

use Sabberworm\CSS\Comment\Comment;
use Sabberworm\CSS\Settings;

/**
 * @internal since 8.7.0
 */
class ParserState
{
    /**
     * @var null
     */
    public const EOF = null;

    /**
     * @var Settings
     */
    private $parserSettings;

    /**
     * @var string
     */
    private $text;

    /**
     * @var array<int, string>
     */
    private $characters;

    /**
     * @var int
     */
    private $currentPosition = 0;

    /**
     * will only be used if the CSS does not contain an `@charset` declaration
     *
     * @var string
     */
    private $charset;

    /**
     * @var int
     */
    private $lineNumber;

    /**
     * @param string $text the complete CSS as text (i.e., usually the contents of a CSS file)
     * @param int<0, max> $lineNumber
     */
    public function __construct($text, Settings $parserSettings, $lineNumber = 1)
    {
        $this->parserSettings = $parserSettings;
        $this->text = $text;
        $this->lineNumber = $lineNumber;
        $this->setCharset($this->parserSettings->getDefaultCharset());
    }

    /**
     * Sets the charset to be used if the CSS does not contain an `@charset` declaration.
     *
     * @throws SourceException if the charset is UTF-8 and the content has invalid byte sequences
     */
    public function setCharset(string $charset): void
    {
        $this->charset = $charset;
        $this->characters = $this->strsplit($this->text);
    }

    /**
     * @return int
     */
    public function currentLine()
    {
        return $this->lineNumber;
    }

    /**
     * @return int
     */
    public function currentColumn()
    {
        return $this->currentPosition;
    }

    /**
     * @return Settings
     */
    public function getSettings()
    {
        return $this->parserSettings;
    }

    public function anchor(): Anchor
    {
        return new Anchor($this->currentPosition, $this);
    }

    /**
     * @param int $position
     */
    public function setPosition($position): void
    {
        $this->currentPosition = $position;
    }

    /**
     * @param bool $ignoreCase
     *
     * @return string
     *
     * @throws UnexpectedTokenException
     */
    public function parseIdentifier($ignoreCase = true)
    {
        if ($this->isEnd()) {
            throw new UnexpectedEOFException('', '', 'identifier', $this->lineNumber);
        }
        $result = $this->parseCharacter(true);
        if ($result === null) {
            throw new UnexpectedTokenException('', $this->peek(5), 'identifier', $this->lineNumber);
        }
        $character = null;
        while (!$this->isEnd() && ($character = $this->parseCharacter(true)) !== null) {
            if (\preg_match('/[a-zA-Z0-9\\x{00A0}-\\x{FFFF}_-]/Sux', $character)) {
                $result .= $character;
            } else {
                $result .= '\\' . $character;
            }
        }
        if ($ignoreCase) {
            $result = $this->strtolower($result);
        }
        return $result;
    }

    /**
     * @param bool $isForIdentifier
     *
     * @return string|null
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function parseCharacter($isForIdentifier)
    {
        if ($this->peek() === '\\') {
            $this->consume('\\');
            if ($this->comes('\\n') || $this->comes('\\r')) {
                return '';
            }
            if (\preg_match('/[0-9a-fA-F]/Su', $this->peek()) === 0) {
                return $this->consume(1);
            }
            $hexCodePoint = $this->consumeExpression('/^[0-9a-fA-F]{1,6}/u', 6);
            if ($this->strlen($hexCodePoint) < 6) {
                // Consume whitespace after incomplete unicode escape
                if (\preg_match('/\\s/isSu', $this->peek())) {
                    if ($this->comes('\\r\\n')) {
                        $this->consume(2);
                    } else {
                        $this->consume(1);
                    }
                }
            }
            $codePoint = \intval($hexCodePoint, 16);
            $utf32EncodedCharacter = '';
            for ($i = 0; $i < 4; ++$i) {
                $utf32EncodedCharacter .= \chr($codePoint & 0xff);
                $codePoint = $codePoint >> 8;
            }
            return \iconv('utf-32le', $this->charset, $utf32EncodedCharacter);
        }
        if ($isForIdentifier) {
            $peek = \ord($this->peek());
            // Ranges: a-z A-Z 0-9 - _
            if (
                ($peek >= 97 && $peek <= 122)
                || ($peek >= 65 && $peek <= 90)
                || ($peek >= 48 && $peek <= 57)
                || ($peek === 45)
                || ($peek === 95)
                || ($peek > 0xa1)
            ) {
                return $this->consume(1);
            }
        } else {
            return $this->consume(1);
        }
        return null;
    }

    /**
     * @return array<int, Comment>|void
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consumeWhiteSpace(): array
    {
        $comments = [];
        do {
            while (\preg_match('/\\s/isSu', $this->peek()) === 1) {
                $this->consume(1);
            }
            if ($this->parserSettings->usesLenientParsing()) {
                try {
                    $comment = $this->consumeComment();
                } catch (UnexpectedEOFException $e) {
                    $this->currentPosition = \count($this->characters);
                    return $comments;
                }
            } else {
                $comment = $this->consumeComment();
            }
            if ($comment !== false) {
                $comments[] = $comment;
            }
        } while ($comment !== false);
        return $comments;
    }

    /**
     * @param string $string
     * @param bool $caseInsensitive
     */
    public function comes($string, $caseInsensitive = false): bool
    {
        $sPeek = $this->peek(\strlen($string));
        return ($sPeek == '')
            ? false
            : $this->streql($sPeek, $string, $caseInsensitive);
    }

    /**
     * @param int $length
     * @param int $offset
     */
    public function peek($length = 1, $offset = 0): string
    {
        $offset += $this->currentPosition;
        if ($offset >= \count($this->characters)) {
            return '';
        }
        return $this->substr($offset, $length);
    }

    /**
     * @param int $value
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consume($value = 1): string
    {
        if (\is_string($value)) {
            $iLineCount = \substr_count($value, "\n");
            $length = $this->strlen($value);
            if (!$this->streql($this->substr($this->currentPosition, $length), $value)) {
                throw new UnexpectedTokenException(
                    $value,
                    $this->peek(\max($length, 5)),
                    'literal',
                    $this->lineNumber
                );
            }
            $this->lineNumber += $iLineCount;
            $this->currentPosition += $this->strlen($value);
            return $value;
        } else {
            if ($this->currentPosition + $value > \count($this->characters)) {
                throw new UnexpectedEOFException((string) $value, $this->peek(5), 'count', $this->lineNumber);
            }
            $result = $this->substr($this->currentPosition, $value);
            $iLineCount = \substr_count($result, "\n");
            $this->lineNumber += $iLineCount;
            $this->currentPosition += $value;
            return $result;
        }
    }

    /**
     * @param string $mExpression
     * @param int|null $iMaxLength
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consumeExpression($mExpression, $iMaxLength = null): string
    {
        $aMatches = null;
        $sInput = $iMaxLength !== null ? $this->peek($iMaxLength) : $this->inputLeft();
        if (\preg_match($mExpression, $sInput, $aMatches, PREG_OFFSET_CAPTURE) === 1) {
            return $this->consume($aMatches[0][0]);
        }
        throw new UnexpectedTokenException($mExpression, $this->peek(5), 'expression', $this->lineNumber);
    }

    /**
     * @return Comment|false
     */
    public function consumeComment()
    {
        $mComment = false;
        if ($this->comes('/*')) {
            $lineNumber = $this->lineNumber;
            $this->consume(1);
            $mComment = '';
            while (($char = $this->consume(1)) !== '') {
                $mComment .= $char;
                if ($this->comes('*/')) {
                    $this->consume(2);
                    break;
                }
            }
        }

        if ($mComment !== false) {
            // We skip the * which was included in the comment.
            return new Comment(\substr($mComment, 1), $lineNumber);
        }

        return $mComment;
    }

    public function isEnd(): bool
    {
        return $this->currentPosition >= \count($this->characters);
    }

    /**
     * @param array<array-key, string>|string $aEnd
     * @param string $bIncludeEnd
     * @param string $consumeEnd
     * @param array<int, Comment> $comments
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consumeUntil($aEnd, $bIncludeEnd = false, $consumeEnd = false, array &$comments = []): string
    {
        $aEnd = \is_array($aEnd) ? $aEnd : [$aEnd];
        $out = '';
        $start = $this->currentPosition;

        while (!$this->isEnd()) {
            $char = $this->consume(1);
            if (\in_array($char, $aEnd, true)) {
                if ($bIncludeEnd) {
                    $out .= $char;
                } elseif (!$consumeEnd) {
                    $this->currentPosition -= $this->strlen($char);
                }
                return $out;
            }
            $out .= $char;
            if ($comment = $this->consumeComment()) {
                $comments[] = $comment;
            }
        }

        if (\in_array(self::EOF, $aEnd, true)) {
            return $out;
        }

        $this->currentPosition = $start;
        throw new UnexpectedEOFException(
            'One of ("' . \implode('","', $aEnd) . '")',
            $this->peek(5),
            'search',
            $this->lineNumber
        );
    }

    private function inputLeft(): string
    {
        return $this->substr($this->currentPosition, -1);
    }

    /**
     * @param string $string1
     * @param string $string2
     * @param bool $caseInsensitive
     */
    public function streql($string1, $string2, $caseInsensitive = true): bool
    {
        if ($caseInsensitive) {
            return $this->strtolower($string1) === $this->strtolower($string2);
        } else {
            return $string1 === $string2;
        }
    }

    /**
     * @param int $numberOfCharacters
     */
    public function backtrack($numberOfCharacters): void
    {
        $this->currentPosition -= $numberOfCharacters;
    }

    /**
     * @param string $string
     */
    public function strlen($string): int
    {
        if ($this->parserSettings->hasMultibyteSupport()) {
            return \mb_strlen($string, $this->charset);
        } else {
            return \strlen($string);
        }
    }

    /**
     * @param int $offset
     * @param int $length
     */
    private function substr($offset, $length): string
    {
        if ($length < 0) {
            $length = \count($this->characters) - $offset + $length;
        }
        if ($offset + $length > \count($this->characters)) {
            $length = \count($this->characters) - $offset;
        }
        $result = '';
        while ($length > 0) {
            $result .= $this->characters[$offset];
            $offset++;
            $length--;
        }
        return $result;
    }

    /**
     * @param string $string
     */
    private function strtolower($string): string
    {
        if ($this->parserSettings->hasMultibyteSupport()) {
            return \mb_strtolower($string, $this->charset);
        } else {
            return \strtolower($string);
        }
    }

    /**
     * @param string $string
     *
     * @return array<int, string>
     *
     * @throws SourceException if the charset is UTF-8 and the string contains invalid byte sequences
     */
    private function strsplit($string)
    {
        if ($this->parserSettings->hasMultibyteSupport()) {
            if ($this->streql($this->charset, 'utf-8')) {
                $result = \preg_split('//u', $string, -1, PREG_SPLIT_NO_EMPTY);
                if (!\is_array($result)) {
                    throw new SourceException('`preg_split` failed with error ' . \preg_last_error());
                }
                return $result;
            } else {
                $length = \mb_strlen($string, $this->charset);
                $result = [];
                for ($i = 0; $i < $length; ++$i) {
                    $result[] = \mb_substr($string, $i, 1, $this->charset);
                }
                return $result;
            }
        } else {
            if ($string === '') {
                return [];
            } else {
                return \str_split($string);
            }
        }
    }

    /**
     * @param string $haystack
     * @param string $needle
     * @param int $offset
     *
     * @return int|false
     */
    private function strpos($haystack, $needle, $offset)
    {
        if ($this->parserSettings->hasMultibyteSupport()) {
            return \mb_strpos($haystack, $needle, $offset, $this->charset);
        } else {
            return \strpos($haystack, $needle, $offset);
        }
    }
}

1	<?php
2
3	declare(strict_types=1);
4
5	namespace Sabberworm\CSS\Parsing;
6
7	use Sabberworm\CSS\Comment\Comment;
8	use Sabberworm\CSS\Settings;
9
10	/**
11	* @internal since 8.7.0
12	*/
13	class ParserState
14	{
15	/**
16	* @var null
17	*/
18	public const EOF = null;
19
20	/**
21	* @var Settings
22	*/
23	private $parserSettings;
24
25	/**
26	* @var string
27	*/
28	private $text;
29
30	/**
31	* @var array<int, string>
32	*/
33	private $characters;
34
35	/**
36	* @var int
37	*/
38	private $currentPosition = 0;
39
40	/**
41	* will only be used if the CSS does not contain an `@charset` declaration
42	*
43	* @var string
44	*/
45	private $charset;
46
47	/**
48	* @var int
49	*/
50	private $lineNumber;
51
52	/**
53	* @param string $text the complete CSS as text (i.e., usually the contents of a CSS file)
54	* @param int<0, max> $lineNumber
55	*/
56	public function __construct($text, Settings $parserSettings, $lineNumber = 1)	×
57	{
58	$this->parserSettings = $parserSettings;	×
59	$this->text = $text;	×
60	$this->lineNumber = $lineNumber;	×
61	$this->setCharset($this->parserSettings->getDefaultCharset());	×
62	}	×
63
64	/**
65	* Sets the charset to be used if the CSS does not contain an `@charset` declaration.
66	*
67	* @throws SourceException if the charset is UTF-8 and the content has invalid byte sequences
68	*/
69	public function setCharset(string $charset): void	×
70	{
71	$this->charset = $charset;	×
72	$this->characters = $this->strsplit($this->text);	×
73	}	×
74
75	/**
76	* @return int
77	*/
78	public function currentLine()	×
79	{
80	return $this->lineNumber;	×
81	}
82
83	/**
84	* @return int
85	*/
86	public function currentColumn()	×
87	{
88	return $this->currentPosition;	×
89	}
90
91	/**
92	* @return Settings
93	*/
94	public function getSettings()	×
95	{
96	return $this->parserSettings;	×
97	}
98
99	public function anchor(): Anchor	×
100	{
101	return new Anchor($this->currentPosition, $this);	×
102	}
103
104	/**
105	* @param int $position
106	*/
107	public function setPosition($position): void	×
108	{
109	$this->currentPosition = $position;	×
110	}	×
111
112	/**
113	* @param bool $ignoreCase
114	*
115	* @return string
116	*
117	* @throws UnexpectedTokenException
118	*/
119	public function parseIdentifier($ignoreCase = true)	×
120	{
121	if ($this->isEnd()) {	×
122	throw new UnexpectedEOFException('', '', 'identifier', $this->lineNumber);	×
123	}
124	$result = $this->parseCharacter(true);	×
125	if ($result === null) {	×
126	throw new UnexpectedTokenException('', $this->peek(5), 'identifier', $this->lineNumber);	×
127	}
128	$character = null;	×
129	while (!$this->isEnd() && ($character = $this->parseCharacter(true)) !== null) {	×
130	if (\preg_match('/[a-zA-Z0-9\\x{00A0}-\\x{FFFF}_-]/Sux', $character)) {	×
131	$result .= $character;	×
132	} else {
133	$result .= '\\' . $character;	×
134	}
135	}
136	if ($ignoreCase) {	×
137	$result = $this->strtolower($result);	×
138	}
139	return $result;	×
140	}
141
142	/**
143	* @param bool $isForIdentifier
144	*
145	* @return string\|null
146	*
147	* @throws UnexpectedEOFException
148	* @throws UnexpectedTokenException
149	*/
150	public function parseCharacter($isForIdentifier)	×
151	{
152	if ($this->peek() === '\\') {	×
153	$this->consume('\\');	×
154	if ($this->comes('\\n') \|\| $this->comes('\\r')) {	×
155	return '';	×
156	}
157	if (\preg_match('/[0-9a-fA-F]/Su', $this->peek()) === 0) {	×
158	return $this->consume(1);	×
159	}
160	$hexCodePoint = $this->consumeExpression('/^[0-9a-fA-F]{1,6}/u', 6);	×
161	if ($this->strlen($hexCodePoint) < 6) {	×
162	// Consume whitespace after incomplete unicode escape
163	if (\preg_match('/\\s/isSu', $this->peek())) {	×
164	if ($this->comes('\\r\\n')) {	×
165	$this->consume(2);	×
166	} else {
167	$this->consume(1);	×
168	}
169	}
170	}
171	$codePoint = \intval($hexCodePoint, 16);	×
172	$utf32EncodedCharacter = '';	×
173	for ($i = 0; $i < 4; ++$i) {	×
174	$utf32EncodedCharacter .= \chr($codePoint & 0xff);	×
175	$codePoint = $codePoint >> 8;	×
176	}
177	return \iconv('utf-32le', $this->charset, $utf32EncodedCharacter);	×
178	}
179	if ($isForIdentifier) {	×
180	$peek = \ord($this->peek());	×
181	// Ranges: a-z A-Z 0-9 - _
182	if (
183	($peek >= 97 && $peek <= 122)	×
184	\|\| ($peek >= 65 && $peek <= 90)	×
185	\|\| ($peek >= 48 && $peek <= 57)	×
186	\|\| ($peek === 45)	×
187	\|\| ($peek === 95)	×
188	\|\| ($peek > 0xa1)	×
189	) {
190	return $this->consume(1);	×
191	}
192	} else {
193	return $this->consume(1);	×
194	}
195	return null;	×
196	}
197
198	/**
199	* @return array<int, Comment>\|void
200	*
201	* @throws UnexpectedEOFException
202	* @throws UnexpectedTokenException
203	*/
204	public function consumeWhiteSpace(): array	×
205	{
206	$comments = [];	×
207	do {
208	while (\preg_match('/\\s/isSu', $this->peek()) === 1) {	×
209	$this->consume(1);	×
210	}
211	if ($this->parserSettings->usesLenientParsing()) {	×
212	try {
213	$comment = $this->consumeComment();	×
214	} catch (UnexpectedEOFException $e) {	×
215	$this->currentPosition = \count($this->characters);	×
216	return $comments;	×
217	}
218	} else {
219	$comment = $this->consumeComment();	×
220	}
221	if ($comment !== false) {	×
222	$comments[] = $comment;	×
223	}
224	} while ($comment !== false);	×
225	return $comments;	×
226	}
227
228	/**
229	* @param string $string
230	* @param bool $caseInsensitive
231	*/
232	public function comes($string, $caseInsensitive = false): bool	×
233	{
234	$sPeek = $this->peek(\strlen($string));	×
235	return ($sPeek == '')	×
236	? false	×
237	: $this->streql($sPeek, $string, $caseInsensitive);	×
238	}
239
240	/**
241	* @param int $length
242	* @param int $offset
243	*/
244	public function peek($length = 1, $offset = 0): string	×
245	{
246	$offset += $this->currentPosition;	×
247	if ($offset >= \count($this->characters)) {	×
248	return '';	×
249	}
250	return $this->substr($offset, $length);	×
251	}
252
253	/**
254	* @param int $value
255	*
256	* @throws UnexpectedEOFException
257	* @throws UnexpectedTokenException
258	*/
259	public function consume($value = 1): string	×
260	{
261	if (\is_string($value)) {	×
262	$iLineCount = \substr_count($value, "\n");	×
263	$length = $this->strlen($value);	×
264	if (!$this->streql($this->substr($this->currentPosition, $length), $value)) {	×
265	throw new UnexpectedTokenException(	×
266	$value,	×
267	$this->peek(\max($length, 5)),	×
268	'literal',	×
269	$this->lineNumber	×
270	);
271	}
272	$this->lineNumber += $iLineCount;	×
273	$this->currentPosition += $this->strlen($value);	×
274	return $value;	×
275	} else {
276	if ($this->currentPosition + $value > \count($this->characters)) {	×
277	throw new UnexpectedEOFException((string) $value, $this->peek(5), 'count', $this->lineNumber);	×
278	}
279	$result = $this->substr($this->currentPosition, $value);	×
280	$iLineCount = \substr_count($result, "\n");	×
281	$this->lineNumber += $iLineCount;	×
282	$this->currentPosition += $value;	×
283	return $result;	×
284	}
285	}
286
287	/**
288	* @param string $mExpression
289	* @param int\|null $iMaxLength
290	*
291	* @throws UnexpectedEOFException
292	* @throws UnexpectedTokenException
293	*/
294	public function consumeExpression($mExpression, $iMaxLength = null): string	×
295	{
296	$aMatches = null;	×
297	$sInput = $iMaxLength !== null ? $this->peek($iMaxLength) : $this->inputLeft();	×
298	if (\preg_match($mExpression, $sInput, $aMatches, PREG_OFFSET_CAPTURE) === 1) {	×
299	return $this->consume($aMatches[0][0]);	×
300	}
301	throw new UnexpectedTokenException($mExpression, $this->peek(5), 'expression', $this->lineNumber);	×
302	}
303
304	/**
305	* @return Comment\|false
306	*/
307	public function consumeComment()	×
308	{
309	$mComment = false;	×
310	if ($this->comes('/*')) {	×
311	$lineNumber = $this->lineNumber;	×
312	$this->consume(1);	×
313	$mComment = '';	×
314	while (($char = $this->consume(1)) !== '') {	×
315	$mComment .= $char;	×
316	if ($this->comes('*/')) {	×
317	$this->consume(2);	×
318	break;	×
319	}
320	}
321	}
322
323	if ($mComment !== false) {	×
324	// We skip the * which was included in the comment.
325	return new Comment(\substr($mComment, 1), $lineNumber);	×
326	}
327
328	return $mComment;	×
329	}
330
331	public function isEnd(): bool	×
332	{
333	return $this->currentPosition >= \count($this->characters);	×
334	}
335
336	/**
337	* @param array<array-key, string>\|string $aEnd
338	* @param string $bIncludeEnd
339	* @param string $consumeEnd
340	* @param array<int, Comment> $comments
341	*
342	* @throws UnexpectedEOFException
343	* @throws UnexpectedTokenException
344	*/
345	public function consumeUntil($aEnd, $bIncludeEnd = false, $consumeEnd = false, array &$comments = []): string	×
346	{
347	$aEnd = \is_array($aEnd) ? $aEnd : [$aEnd];	×
348	$out = '';	×
349	$start = $this->currentPosition;	×
350
351	while (!$this->isEnd()) {	×
352	$char = $this->consume(1);	×
353	if (\in_array($char, $aEnd, true)) {	×
354	if ($bIncludeEnd) {	×
355	$out .= $char;	×
356	} elseif (!$consumeEnd) {	×
357	$this->currentPosition -= $this->strlen($char);	×
358	}
359	return $out;	×
360	}
361	$out .= $char;	×
362	if ($comment = $this->consumeComment()) {	×
363	$comments[] = $comment;	×
364	}
365	}
366
367	if (\in_array(self::EOF, $aEnd, true)) {	×
368	return $out;	×
369	}
370
371	$this->currentPosition = $start;	×
372	throw new UnexpectedEOFException(	×
373	'One of ("' . \implode('","', $aEnd) . '")',	×
374	$this->peek(5),	×
375	'search',	×
376	$this->lineNumber	×
377	);
378	}
379
380	private function inputLeft(): string	×
381	{
382	return $this->substr($this->currentPosition, -1);	×
383	}
384
385	/**
386	* @param string $string1
387	* @param string $string2
388	* @param bool $caseInsensitive
389	*/
390	public function streql($string1, $string2, $caseInsensitive = true): bool	×
391	{
392	if ($caseInsensitive) {	×
393	return $this->strtolower($string1) === $this->strtolower($string2);	×
394	} else {
395	return $string1 === $string2;	×
396	}
397	}
398
399	/**
400	* @param int $numberOfCharacters
401	*/
402	public function backtrack($numberOfCharacters): void	×
403	{
404	$this->currentPosition -= $numberOfCharacters;	×
405	}	×
406
407	/**
408	* @param string $string
409	*/
410	public function strlen($string): int	×
411	{
412	if ($this->parserSettings->hasMultibyteSupport()) {	×
413	return \mb_strlen($string, $this->charset);	×
414	} else {
415	return \strlen($string);	×
416	}
417	}
418
419	/**
420	* @param int $offset
421	* @param int $length
422	*/
423	private function substr($offset, $length): string	×
424	{
425	if ($length < 0) {	×
426	$length = \count($this->characters) - $offset + $length;	×
427	}
428	if ($offset + $length > \count($this->characters)) {	×
429	$length = \count($this->characters) - $offset;	×
430	}
431	$result = '';	×
432	while ($length > 0) {	×
433	$result .= $this->characters[$offset];	×
434	$offset++;	×
435	$length--;	×
436	}
437	return $result;	×
438	}
439
440	/**
441	* @param string $string
442	*/
443	private function strtolower($string): string	×
444	{
445	if ($this->parserSettings->hasMultibyteSupport()) {	×
446	return \mb_strtolower($string, $this->charset);	×
447	} else {
448	return \strtolower($string);	×
449	}
450	}
451
452	/**
453	* @param string $string
454	*
455	* @return array<int, string>
456	*
457	* @throws SourceException if the charset is UTF-8 and the string contains invalid byte sequences
458	*/
459	private function strsplit($string)	×
460	{
461	if ($this->parserSettings->hasMultibyteSupport()) {	×
462	if ($this->streql($this->charset, 'utf-8')) {	×
463	$result = \preg_split('//u', $string, -1, PREG_SPLIT_NO_EMPTY);	×
464	if (!\is_array($result)) {	×
465	throw new SourceException('`preg_split` failed with error ' . \preg_last_error());	×
466	}
467	return $result;	×
468	} else {
469	$length = \mb_strlen($string, $this->charset);	×
470	$result = [];	×
471	for ($i = 0; $i < $length; ++$i) {	×
472	$result[] = \mb_substr($string, $i, 1, $this->charset);	×
473	}
474	return $result;	×
475	}
476	} else {
477	if ($string === '') {	×
478	return [];	×
479	} else {
480	return \str_split($string);	×
481	}
482	}
483	}
484
485	/**
486	* @param string $haystack
487	* @param string $needle
488	* @param int $offset
489	*
490	* @return int\|false
491	*/
492	private function strpos($haystack, $needle, $offset)	×
493	{
494	if ($this->parserSettings->hasMultibyteSupport()) {	×
495	return \mb_strpos($haystack, $needle, $offset, $this->charset);	×
496	} else {
497	return \strpos($haystack, $needle, $offset);	×
498	}
499	}
500	}

MyIntervals / PHP-CSS-Parser / 13672444747

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