Configurator::getRegexpInfo() - Code Metrics - s9e/TextFormatter - Measure and Improve Code Quality continuously with Scrutinizer

Configurator::getRegexpInfo() A
last analyzed 2025-05-02 21:56 UTC

↳ Parent: Configurator

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2

Importance

Changes

Metric	Value
eloc	3
dl	0
loc	8
ccs	4
cts	4
cp	1
rs	10
c	0
b	0
f	0
cc	2
nc	2
nop	1
crap	2

<?php

/**
* @package   s9e\TextFormatter
* @copyright Copyright (c) The s9e authors
* @license   http://www.opensource.org/licenses/mit-license.php The MIT License
*/
namespace s9e\TextFormatter\Plugins\Preg;

use DOMAttr;
use DOMText;
use DOMXPath;
use Exception;
use InvalidArgumentException;
use s9e\TextFormatter\Configurator\Helpers\NodeLocator;
use s9e\TextFormatter\Configurator\Helpers\RegexpParser;
use s9e\TextFormatter\Configurator\Helpers\TemplateLoader;
use s9e\TextFormatter\Configurator\Helpers\TemplateModifier;
use s9e\TextFormatter\Configurator\Items\Regexp;
use s9e\TextFormatter\Configurator\Items\Tag;
use s9e\TextFormatter\Configurator\JavaScript\RegexpConvertor;
use s9e\TextFormatter\Configurator\Validators\TagName;
use s9e\TextFormatter\Plugins\ConfiguratorBase;

class Configurator extends ConfiguratorBase
{
	/**
	* @var array[] Captures from current regexp
	*/
	protected $captures;

	/**
	* @var array[] List of [tagName, regexp, passthroughIdx]
	*/
	protected $collection = [];

	/**
	* @var string Delimiter used in current regexp
	*/
	protected $delimiter;

	/**
	* @var string Non-D modifiers used in current regexp
	*/
	protected $modifiers;

	/**
	* @var array References used in current template
	*/
	protected $references;

	/**
	* @var string Regexp used to find references in the templates. We check that the reference is
	*             not preceded with an odd number of backslashes
	*/
	protected $referencesRegexp = '((?<!\\\\)(?:\\\\\\\\)*\\K(?:[$\\\\]\\d+|\\$\\{\\d+\\}))S';

	/**
	* {@inheritdoc}
	*/
	public function asConfig()
	{
		if (!count($this->collection))
		{
			return;
		}

		$pregs = [];
		foreach ($this->collection as list($tagName, $regexp, $passthroughIdx))
		{
			$captures = RegexpParser::getCaptureNames($regexp);
			$pregs[]  = [$tagName, new Regexp($regexp, true), $passthroughIdx, $captures];
		}

		return ['generics' => $pregs];
	}

	/**
	* {@inheritdoc}
	*/
	public function getJSHints()
	{
		$hasPassthrough = false;
		foreach ($this->collection as list($tagName, $regexp, $passthroughIdx))
		{
			if ($passthroughIdx)
			{
				$hasPassthrough = true;
				break;
			}
		}

		return ['PREG_HAS_PASSTHROUGH' => $hasPassthrough];
	}

	/**
	* Configure a pattern-based match
	*
	* @param  string $regexp   Regexp to be used by the parser
	* @param  string $tagName  Name of the tag that holds the matched text
	* @return void
	*/
	public function match($regexp, $tagName)
	{
		$tagName        = TagName::normalize($tagName);
		$passthroughIdx = 0;
		$this->parseRegexp($regexp);
		foreach ($this->captures as $i => $capture)
		{
			if (!$this->isCatchAll((string) $capture['expr']))
			{
				continue;
			}
			$passthroughIdx = $i;
		}

		$this->collection[] = [$tagName, $regexp, $passthroughIdx];
	}

	/**
	* Configure a pattern-based replacement
	*
	* @param  string $regexp   Regexp to be used by the parser
	* @param  string $template Template to be used for rendering
	* @param  string $tagName  Name of the tag to create. A name based on the regexp is
	*                          automatically generated if none is provided
	* @return Tag              The tag created to represent this replacement
	*/
	public function replace($regexp, $template, $tagName = null)
	{
		if (!isset($tagName))
		{
			$tagName = 'PREG_' . strtoupper(dechex(crc32($regexp)));
		}
		$this->parseRegexp($regexp);
		$this->parseTemplate($template);

		$passthroughIdx = $this->getPassthroughCapture();
		if ($passthroughIdx)
		{
			$this->captures[$passthroughIdx]['passthrough'] = true;
		}

		$regexp   = $this->fixUnnamedCaptures($regexp);
		$template = $this->convertTemplate($template, $passthroughIdx);

		$this->collection[] = [$tagName, $regexp, $passthroughIdx];

		return $this->createTag($tagName, $template);
	}

	/**
	* Add given attribute to given tag based on parsed captures
	*
	* @param  Tag    $tag
	* @param  string $attrName
	* @return void
	*/
	protected function addAttribute(Tag $tag, $attrName)
	{
		$isUrl = false;
		$exprs = [];
		foreach ($this->captures as $key => $capture)
		{
			if ($capture['name'] !== $attrName)
			{
				continue;
			}
			$exprs[] = $capture['expr'];
			if (isset($this->references['asUrl'][$key]))
			{
				$isUrl = true;
			}
		}
		$exprs = array_unique($exprs);

		$regexp = $this->delimiter . '^';
		$regexp .= (count($exprs) === 1) ? $exprs[0] : '(?:' . implode('|', $exprs) . ')';
		$regexp .= '$' . $this->delimiter . 'D' . $this->modifiers;

		$attribute = $tag->attributes->add($attrName);

		$filter = $this->configurator->attributeFilters['#regexp'];
		$filter->setRegexp($regexp);
		$attribute->filterChain[] = $filter;

		if ($isUrl)
		{
			$filter = $this->configurator->attributeFilters['#url'];
			$attribute->filterChain[] = $filter;
		}
	}

	/**
	* Convert a preg-style replacement to a template
	*
	* @param  string  $template       Original template
	* @param  integer $passthroughIdx Index of the passthrough capture
	* @return string                  Modified template
	*/
	protected function convertTemplate($template, $passthroughIdx)
	{
		// Replace numeric references in the template with the value of the corresponding attribute
		// values or passthrough
		$template = TemplateModifier::replaceTokens(
			$template,
			$this->referencesRegexp,
			function ($m, $node) use ($passthroughIdx)
			{
				$key = (int) trim($m[0], '\\${}');
				if ($key === 0)
				{
					// $0 copies the whole textContent
					return ['expression', '.'];
				}
				if ($key === $passthroughIdx && $node instanceof DOMText)
				{
					// Passthrough capture, does not include start/end tags
					return ['passthrough'];
				}
				if (isset($this->captures[$key]['name']))
				{
					// Normal capture, replaced by the equivalent expression
					return ['expression', '@' . $this->captures[$key]['name']];
				}

				// Non-existent captures are simply ignored, similarly to preg_replace()
				return ['literal', ''];
			}
		);

		// Unescape backslashes and special characters in the template
		$template = TemplateModifier::replaceTokens(
			$template,
			'(\\\\+[0-9${\\\\])',
			function ($m)
			{
				return ['literal', stripslashes($m[0])];
			}
		);

		return $template;
	}

	/**
	* Create the tag that matches current regexp
	*
	* @param  string $tagName
	* @param  string $template
	* @return Tag
	*/
	protected function createTag($tagName, $template)
	{
		$tag = new Tag;
		foreach ($this->captures as $key => $capture)
		{
			if (!isset($capture['name']))
			{
				continue;
			}

			$attrName = $capture['name'];
			if (isset($tag->attributes[$attrName]))
			{
				continue;
			}

			$this->addAttribute($tag, $attrName);
		}
		$tag->template = $template;

		// Normalize the tag's template
		$this->configurator->templateNormalizer->normalizeTag($tag);

		// Check the safeness of this tag
		$this->configurator->templateChecker->checkTag($tag);

		return $this->configurator->tags->add($tagName, $tag);
	}

	/**
	* Give a name to unnamed captures that are referenced in current replacement
	*
	* @param  string $regexp Original regexp
	* @return string         Modified regexp
	*/
	protected function fixUnnamedCaptures($regexp)
	{
		$keys = [];
		foreach ($this->references['anywhere'] as $key)
		{
			$capture = $this->captures[$key];
			if (!$key || isset($capture['name']))
			{
				continue;
			}
			// Give the capture a name if it's used as URL or it's not a passthrough
			if (isset($this->references['asUrl'][$key]) || !isset($capture['passthrough']))
			{
				$keys[] = $key;
			}
		}

		// Alter the original regexp to inject the subpatterns' names. The position is equal to the
		// subpattern's position plus 2, to account for the delimiter at the start of the regexp and
		// the opening parenthesis of the subpattern. Also, we need to process them in reverse order
		// so that replacements don't change the position of subsequent subpatterns
		rsort($keys);
		foreach ($keys as $key)
		{
			$name   = '_' . $key;
			$pos    = $this->captures[$key]['pos'];
			$regexp = substr_replace($regexp, "?'" . $name . "'", 2 + $pos, 0);
			$this->captures[$key]['name'] = $name;
		}

		return $regexp;

	}

	/**
	* Get the index of the capture used for passthrough in current replacement
	*
	* @return integer
	*/
	protected function getPassthroughCapture()
	{
		$passthrough = 0;
		foreach ($this->references['inText'] as $key)
		{
			if (!$this->isCatchAll((string) $this->captures[$key]['expr']))
			{
				// Ignore if it's not a catch-all expression such as .*?
				continue;
			}
			if ($passthrough)
			{
				// Abort if there's more than 1 possible passthrough
				$passthrough = 0;
				break;
			}
			$passthrough = (int) $key;
		}

		return $passthrough;
	}

	/**
	* Parse a regexp and return its info
	*
	* @param  string $regexp
	* @return array
	*/
	protected function getRegexpInfo($regexp)
	{
		if (@preg_match_all($regexp, '') === false)
		{
			throw new InvalidArgumentException('Invalid regexp');
		}

		return RegexpParser::parse($regexp);
	}

	/**
	* Test whether given expression is a catch-all expression such as .*?
	*
	* @param  string $expr Subpattern
	* @return bool
	*/
	protected function isCatchAll($expr)
	{
		return (bool) preg_match('(^\\.[*+]\\??$)D', $expr);
	}

	/**
	* Parse given regexp and store its information
	*
	* @param  string  $regexp
	* @return void
	*/
	protected function parseRegexp($regexp)
	{
		$this->captures = [['name' => null, 'expr' => null]];
		$regexpInfo = $this->getRegexpInfo($regexp);
		$this->delimiter = $regexpInfo['delimiter'];
		$this->modifiers = str_replace('D', '', $regexpInfo['modifiers']);
		foreach ($regexpInfo['tokens'] as $token)
		{
			if ($token['type'] !== 'capturingSubpatternStart')
			{
				continue;
			}
			$this->captures[] = [
				'pos'    => $token['pos'],
				'name'   => $token['name'] ?? null,
				'expr'   => $token['content']
			];
		}
	}

	/**
	* Parse given template and store the references it contains
	*
	* @param  string $template
	* @return void
	*/
	protected function parseTemplate($template)
	{
		$this->references = [
			'anywhere' => [],
			'asUrl'    => [],
			'inText'   => []
		];

		preg_match_all($this->referencesRegexp, $template, $matches);
		foreach ($matches[0] as $match)
		{
			$key = trim($match, '\\${}');
			$this->references['anywhere'][$key] = $key;
		}

		$dom   = TemplateLoader::load($template);
		$xpath = new DOMXPath($dom);
		foreach ($xpath->query('//text()') as $node)
		{
			preg_match_all($this->referencesRegexp, $node->textContent, $matches);
			foreach ($matches[0] as $match)
			{
				$key = trim($match, '\\${}');
				$this->references['inText'][$key] = $key;
			}
		}

		foreach (NodeLocator::getURLNodes($dom) as $node)
		{
			// We only bother with literal attributes that start with a capture
			if ($node instanceof DOMAttr
			 && preg_match('(^(?:[$\\\\]\\d+|\\$\\{\\d+\\}))', trim($node->value), $m))
			{
				$key = trim($m[0], '\\${}');
				$this->references['asUrl'][$key] = $key;
			}
		}

		$this->removeUnknownReferences();
	}

	/**
	* Remove references that do not correspond to an existing capture
	*
	* @return void
	*/
	protected function removeUnknownReferences()
	{
		foreach ($this->references as &$references)
		{
			$references = array_intersect_key($references, $this->captures);
		}
	}
}

1		<?php
2
3		/**
4		* @package s9e\TextFormatter
5		* @copyright Copyright (c) The s9e authors
6		* @license http://www.opensource.org/licenses/mit-license.php The MIT License
7		*/
8		namespace s9e\TextFormatter\Plugins\Preg;
9
10		use DOMAttr;
11		use DOMText;
12		use DOMXPath;
13		use Exception;
14		use InvalidArgumentException;
15		use s9e\TextFormatter\Configurator\Helpers\NodeLocator;
16		use s9e\TextFormatter\Configurator\Helpers\RegexpParser;
17		use s9e\TextFormatter\Configurator\Helpers\TemplateLoader;
18		use s9e\TextFormatter\Configurator\Helpers\TemplateModifier;
19		use s9e\TextFormatter\Configurator\Items\Regexp;
20		use s9e\TextFormatter\Configurator\Items\Tag;
21		use s9e\TextFormatter\Configurator\JavaScript\RegexpConvertor;
22		use s9e\TextFormatter\Configurator\Validators\TagName;
23		use s9e\TextFormatter\Plugins\ConfiguratorBase;
24
25		class Configurator extends ConfiguratorBase
26		{
27		/**
28		* @var array[] Captures from current regexp
29		*/
30		protected $captures;
31
32		/**
33		* @var array[] List of [tagName, regexp, passthroughIdx]
34		*/
35		protected $collection = [];
36
37		/**
38		* @var string Delimiter used in current regexp
39		*/
40		protected $delimiter;
41
42		/**
43		* @var string Non-D modifiers used in current regexp
44		*/
45		protected $modifiers;
46
47		/**
48		* @var array References used in current template
49		*/
50		protected $references;
51
52		/**
53		* @var string Regexp used to find references in the templates. We check that the reference is
54		* not preceded with an odd number of backslashes
55		*/
56		protected $referencesRegexp = '((?<!\\\\)(?:\\\\\\\\)*\\K(?:[$\\\\]\\d+\|\\$\\{\\d+\\}))S';
57
58		/**
59		* {@inheritdoc}
60		*/
61	6	public function asConfig()
62		{
63	6	if (!count($this->collection))
64		{
65	1	return;
66		}
67
68	5	$pregs = [];
69	5	foreach ($this->collection as list($tagName, $regexp, $passthroughIdx))
70		{
71	5	$captures = RegexpParser::getCaptureNames($regexp);
72	5	$pregs[] = [$tagName, new Regexp($regexp, true), $passthroughIdx, $captures];
73		}
74
75	5	return ['generics' => $pregs];
76		}
77
78		/**
79		* {@inheritdoc}
80		*/
81	2	public function getJSHints()
82		{
83	2	$hasPassthrough = false;
84	2	foreach ($this->collection as list($tagName, $regexp, $passthroughIdx))
85		{
86	2	if ($passthroughIdx)
87		{
88	1	$hasPassthrough = true;
89	1	break;
90		}
91		}
92
93	2	return ['PREG_HAS_PASSTHROUGH' => $hasPassthrough];
94		}
95
96		/**
97		* Configure a pattern-based match
98		*
99		* @param string $regexp Regexp to be used by the parser
100		* @param string $tagName Name of the tag that holds the matched text
101		* @return void
102		*/
103	1	public function match($regexp, $tagName)
104		{
105	1	$tagName = TagName::normalize($tagName);
106	1	$passthroughIdx = 0;
107	1	$this->parseRegexp($regexp);
108	1	foreach ($this->captures as $i => $capture)
109		{
110	1	if (!$this->isCatchAll((string) $capture['expr']))
111		{
112	1	continue;
113		}
114	1	$passthroughIdx = $i;
115		}
116
117	1	$this->collection[] = [$tagName, $regexp, $passthroughIdx];
118		}
119
120		/**
121		* Configure a pattern-based replacement
122		*
123		* @param string $regexp Regexp to be used by the parser
124		* @param string $template Template to be used for rendering
125		* @param string $tagName Name of the tag to create. A name based on the regexp is
126		* automatically generated if none is provided
127		* @return Tag The tag created to represent this replacement
128		*/
129	34	public function replace($regexp, $template, $tagName = null)
130		{
131	34	if (!isset($tagName))
132		{
133	31	$tagName = 'PREG_' . strtoupper(dechex(crc32($regexp)));
134		}
135	34	$this->parseRegexp($regexp);
136	33	$this->parseTemplate($template);
137
138	33	$passthroughIdx = $this->getPassthroughCapture();
139	33	if ($passthroughIdx)
140		{
141	6	$this->captures[$passthroughIdx]['passthrough'] = true;
142		}
143
144	33	$regexp = $this->fixUnnamedCaptures($regexp);
145	33	$template = $this->convertTemplate($template, $passthroughIdx);
146
147	33	$this->collection[] = [$tagName, $regexp, $passthroughIdx];
148
149	33	return $this->createTag($tagName, $template);
150		}
151
152		/**
153		* Add given attribute to given tag based on parsed captures
154		*
155		* @param Tag $tag
156		* @param string $attrName
157		* @return void
158		*/
159	27	protected function addAttribute(Tag $tag, $attrName)
160		{
161	27	$isUrl = false;
162	27	$exprs = [];
163	27	foreach ($this->captures as $key => $capture)
164		{
165	27	if ($capture['name'] !== $attrName)
166		{
167	27	continue;
168		}
169	27	$exprs[] = $capture['expr'];
170	27	if (isset($this->references['asUrl'][$key]))
171		{
172	3	$isUrl = true;
173		}
174		}
175	27	$exprs = array_unique($exprs);
176
177	27	$regexp = $this->delimiter . '^';
178	27	$regexp .= (count($exprs) === 1) ? $exprs[0] : '(?:' . implode('\|', $exprs) . ')';
179	27	$regexp .= '$' . $this->delimiter . 'D' . $this->modifiers;
180
181	27	$attribute = $tag->attributes->add($attrName);
182
183	27	$filter = $this->configurator->attributeFilters['#regexp'];
184	27	$filter->setRegexp($regexp);
185	27	$attribute->filterChain[] = $filter;
186
187	27	if ($isUrl)
188		{
189	3	$filter = $this->configurator->attributeFilters['#url'];
190	3	$attribute->filterChain[] = $filter;
191		}
192		}
193
194		/**
195		* Convert a preg-style replacement to a template
196		*
197		* @param string $template Original template
198		* @param integer $passthroughIdx Index of the passthrough capture
199		* @return string Modified template
200		*/
201	33	protected function convertTemplate($template, $passthroughIdx)
202		{
203		// Replace numeric references in the template with the value of the corresponding attribute
204		// values or passthrough
205	33	$template = TemplateModifier::replaceTokens(
206	33	$template,
207	33	$this->referencesRegexp,
208	33	function ($m, $node) use ($passthroughIdx)
209		{
210	22	$key = (int) trim($m[0], '\\${}');
211	22	if ($key === 0)
212		{
213		// $0 copies the whole textContent
214	1	return ['expression', '.'];
215		}
216	22	if ($key === $passthroughIdx && $node instanceof DOMText)
217		{
218		// Passthrough capture, does not include start/end tags
219	6	return ['passthrough'];
220		}
221	18	if (isset($this->captures[$key]['name']))
222		{
223		// Normal capture, replaced by the equivalent expression
224	17	return ['expression', '@' . $this->captures[$key]['name']];
225		}
226
227		// Non-existent captures are simply ignored, similarly to preg_replace()
228	1	return ['literal', ''];
229	33	}
230		);
231
232		// Unescape backslashes and special characters in the template
233	33	$template = TemplateModifier::replaceTokens(
234	33	$template,
235	33	'(\\\\+[0-9${\\\\])',
236	33	function ($m)
237		{
238	3	return ['literal', stripslashes($m[0])];
239	33	}
240		);
241
242	33	return $template;
243		}
244
245		/**
246		* Create the tag that matches current regexp
247		*
248		* @param string $tagName
249		* @param string $template
250		* @return Tag
251		*/
252	33	protected function createTag($tagName, $template)
253		{
254	33	$tag = new Tag;
255	33	foreach ($this->captures as $key => $capture)
256		{
257	33	if (!isset($capture['name']))
258		{
259	33	continue;
260		}
261
262	27	$attrName = $capture['name'];
263	27	if (isset($tag->attributes[$attrName]))
264		{
265	1	continue;
266		}
267
268	27	$this->addAttribute($tag, $attrName);
269		}
270	33	$tag->template = $template;
271
272		// Normalize the tag's template
273	33	$this->configurator->templateNormalizer->normalizeTag($tag);
274
275		// Check the safeness of this tag
276	33	$this->configurator->templateChecker->checkTag($tag);
277
278	31	return $this->configurator->tags->add($tagName, $tag);
279		}
280
281		/**
282		* Give a name to unnamed captures that are referenced in current replacement
283		*
284		* @param string $regexp Original regexp
285		* @return string Modified regexp
286		*/
287	33	protected function fixUnnamedCaptures($regexp)
288		{
289	33	$keys = [];
290	33	foreach ($this->references['anywhere'] as $key)
291		{
292	21	$capture = $this->captures[$key];
293	21	if (!$key \|\| isset($capture['name']))
294		{
295	2	continue;
296		}
297		// Give the capture a name if it's used as URL or it's not a passthrough
298	20	if (isset($this->references['asUrl'][$key]) \|\| !isset($capture['passthrough']))
299		{
300	16	$keys[] = $key;
301		}
302		}
303
304		// Alter the original regexp to inject the subpatterns' names. The position is equal to the
305		// subpattern's position plus 2, to account for the delimiter at the start of the regexp and
306		// the opening parenthesis of the subpattern. Also, we need to process them in reverse order
307		// so that replacements don't change the position of subsequent subpatterns
308	33	rsort($keys);
309	33	foreach ($keys as $key)
310		{
311	16	$name = '_' . $key;
312	16	$pos = $this->captures[$key]['pos'];
313	16	$regexp = substr_replace($regexp, "?'" . $name . "'", 2 + $pos, 0);
314	16	$this->captures[$key]['name'] = $name;
315		}
316
317	33	return $regexp;
		0 ignored issues – show Bug Best Practice introduced 2021-01-10 14:12 UTC by Report Bug Copy Issue Report The expression `return $regexp` also could return the type `array` which is incompatible with the documented return type `string`. Loading history...
318		}
319
320		/**
321		* Get the index of the capture used for passthrough in current replacement
322		*
323		* @return integer
324		*/
325	33	protected function getPassthroughCapture()
326		{
327	33	$passthrough = 0;
328	33	foreach ($this->references['inText'] as $key)
329		{
330	21	if (!$this->isCatchAll((string) $this->captures[$key]['expr']))
331		{
332		// Ignore if it's not a catch-all expression such as .*?
333	14	continue;
334		}
335	7	if ($passthrough)
336		{
337		// Abort if there's more than 1 possible passthrough
338	1	$passthrough = 0;
339	1	break;
340		}
341	7	$passthrough = (int) $key;
342		}
343
344	33	return $passthrough;
345		}
346
347		/**
348		* Parse a regexp and return its info
349		*
350		* @param string $regexp
351		* @return array
352		*/
353	35	protected function getRegexpInfo($regexp)
354		{
355	35	if (@preg_match_all($regexp, '') === false)
356		{
357	1	throw new InvalidArgumentException('Invalid regexp');
358		}
359
360	34	return RegexpParser::parse($regexp);
361		}
362
363		/**
364		* Test whether given expression is a catch-all expression such as .*?
365		*
366		* @param string $expr Subpattern
367		* @return bool
368		*/
369	22	protected function isCatchAll($expr)
370		{
371	22	return (bool) preg_match('(^\\.[*+]\\??$)D', $expr);
372		}
373
374		/**
375		* Parse given regexp and store its information
376		*
377		* @param string $regexp
378		* @return void
379		*/
380	35	protected function parseRegexp($regexp)
381		{
382	35	$this->captures = [['name' => null, 'expr' => null]];
383	35	$regexpInfo = $this->getRegexpInfo($regexp);
384	34	$this->delimiter = $regexpInfo['delimiter'];
385	34	$this->modifiers = str_replace('D', '', $regexpInfo['modifiers']);
386	34	foreach ($regexpInfo['tokens'] as $token)
387		{
388	33	if ($token['type'] !== 'capturingSubpatternStart')
389		{
390	33	continue;
391		}
392	32	$this->captures[] = [
393	32	'pos' => $token['pos'],
394	32	'name' => $token['name'] ?? null,
395	32	'expr' => $token['content']
396		];
397		}
398		}
399
400		/**
401		* Parse given template and store the references it contains
402		*
403		* @param string $template
404		* @return void
405		*/
406	33	protected function parseTemplate($template)
407		{
408	33	$this->references = [
409		'anywhere' => [],
410		'asUrl' => [],
411		'inText' => []
412		];
413
414	33	preg_match_all($this->referencesRegexp, $template, $matches);
415	33	foreach ($matches[0] as $match)
416		{
417	22	$key = trim($match, '\\${}');
418	22	$this->references['anywhere'][$key] = $key;
419		}
420
421	33	$dom = TemplateLoader::load($template);
422	33	$xpath = new DOMXPath($dom);
423	33	foreach ($xpath->query('//text()') as $node)
424		{
425	22	preg_match_all($this->referencesRegexp, $node->textContent, $matches);
426	22	foreach ($matches[0] as $match)
427		{
428	22	$key = trim($match, '\\${}');
429	22	$this->references['inText'][$key] = $key;
430		}
431		}
432
433	33	foreach (NodeLocator::getURLNodes($dom) as $node)
434		{
435		// We only bother with literal attributes that start with a capture
436	4	if ($node instanceof DOMAttr
437	4	&& preg_match('(^(?:[$\\\\]\\d+\|\\$\\{\\d+\\}))', trim($node->value), $m))
438		{
439	3	$key = trim($m[0], '\\${}');
440	3	$this->references['asUrl'][$key] = $key;
441		}
442		}
443
444	33	$this->removeUnknownReferences();
445		}
446
447		/**
448		* Remove references that do not correspond to an existing capture
449		*
450		* @return void
451		*/
452	33	protected function removeUnknownReferences()
453		{
454	33	foreach ($this->references as &$references)
455		{
456	33	$references = array_intersect_key($references, $this->captures);
457		}
458		}
459		}

s9e / TextFormatter

Configurator::getRegexpInfo() A last analyzed 2025-05-02 21:56 UTC

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Configurator::getRegexpInfo() A
last analyzed 2025-05-02 21:56 UTC