Configurator::fixUnnamedCaptures() - Code Metrics - Inspection of "MediaEmbed: updated Amazon" - s9e/TextFormatter - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( d91fed...fd66aa )

by Josh

created 2018-06-23 23:40 UTC

Configurator::fixUnnamedCaptures() B

↳ Parent: Configurator

Complexity

Conditions	7
Paths	8

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	7

Importance

Changes

Metric	Value
dl	0
loc	32
rs	8.4746
c	0
b	0
f	0
ccs	15
cts	15
cp	1
cc	7
nc	8
nop	1
crap	7

<?php

/**
* @package   s9e\TextFormatter
* @copyright Copyright (c) 2010-2018 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\RegexpParser;
use s9e\TextFormatter\Configurator\Helpers\TemplateHelper;
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($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 = TemplateHelper::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 = TemplateHelper::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($this->captures[$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'    => $token['pos'],
				'name'   => (isset($token['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;
		}

		$dom   = TemplateHelper::loadTemplate($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 (TemplateHelper::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) 2010-2018 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\RegexpParser;
16		use s9e\TextFormatter\Configurator\Helpers\TemplateHelper;
17		use s9e\TextFormatter\Configurator\Items\Regexp;
18		use s9e\TextFormatter\Configurator\Items\Tag;
19		use s9e\TextFormatter\Configurator\JavaScript\RegexpConvertor;
20		use s9e\TextFormatter\Configurator\Validators\TagName;
21		use s9e\TextFormatter\Plugins\ConfiguratorBase;
22
23		class Configurator extends ConfiguratorBase
24		{
25		/**
26		* @var array[] Captures from current regexp
27		*/
28		protected $captures;
29
30		/**
31		* @var array[] List of [tagName, regexp, passthroughIdx]
32		*/
33		protected $collection = [];
34
35		/**
36		* @var string Delimiter used in current regexp
37		*/
38		protected $delimiter;
39
40		/**
41		* @var string Non-D modifiers used in current regexp
42		*/
43		protected $modifiers;
44
45		/**
46		* @var array References used in current template
47		*/
48		protected $references;
49
50		/**
51		* @var string Regexp used to find references in the templates. We check that the reference is
52		* not preceded with an odd number of backslashes
53		*/
54		protected $referencesRegexp = '((?<!\\\\)(?:\\\\\\\\)*\\K(?:[$\\\\]\\d+\|\\$\\{\\d+\\}))S';
55
56		/**
57		* {@inheritdoc}
58		*/
59	6	public function asConfig()
60		{
61	6	if (!count($this->collection))
62		{
63	1	return;
64		}
65
66	5	$pregs = [];
67	5	foreach ($this->collection as list($tagName, $regexp, $passthroughIdx))
68		{
69	5	$captures = RegexpParser::getCaptureNames($regexp);
70	5	$pregs[] = [$tagName, new Regexp($regexp, true), $passthroughIdx, $captures];
71		}
72
73	5	return ['generics' => $pregs];
74		}
75
76		/**
77		* {@inheritdoc}
78		*/
79	2	public function getJSHints()
80		{
81	2	$hasPassthrough = false;
82	2	foreach ($this->collection as list($tagName, $regexp, $passthroughIdx))
83		{
84	2	if ($passthroughIdx)
85		{
86	1	$hasPassthrough = true;
87	2	break;
88		}
89		}
90
91	2	return ['PREG_HAS_PASSTHROUGH' => $hasPassthrough];
92		}
93
94		/**
95		* Configure a pattern-based match
96		*
97		* @param string $regexp Regexp to be used by the parser
98		* @param string $tagName Name of the tag that holds the matched text
99		* @return void
100		*/
101	1	public function match($regexp, $tagName)
102		{
103	1	$tagName = TagName::normalize($tagName);
104	1	$passthroughIdx = 0;
105	1	$this->parseRegexp($regexp);
106	1	foreach ($this->captures as $i => $capture)
107		{
108	1	if (!$this->isCatchAll($capture['expr']))
109		{
110	1	continue;
111		}
112	1	$passthroughIdx = $i;
113		}
114
115	1	$this->collection[] = [$tagName, $regexp, $passthroughIdx];
116	1	}
117
118		/**
119		* Configure a pattern-based replacement
120		*
121		* @param string $regexp Regexp to be used by the parser
122		* @param string $template Template to be used for rendering
123		* @param string $tagName Name of the tag to create. A name based on the regexp is
124		* automatically generated if none is provided
125		* @return Tag The tag created to represent this replacement
126		*/
127	34	public function replace($regexp, $template, $tagName = null)
128		{
129	34	if (!isset($tagName))
130		{
131	31	$tagName = 'PREG_' . strtoupper(dechex(crc32($regexp)));
132		}
133	34	$this->parseRegexp($regexp);
134	33	$this->parseTemplate($template);
135
136	33	$passthroughIdx = $this->getPassthroughCapture();
137	33	if ($passthroughIdx)
138		{
139	6	$this->captures[$passthroughIdx]['passthrough'] = true;
140		}
141
142	33	$regexp = $this->fixUnnamedCaptures($regexp);
143	33	$template = $this->convertTemplate($template, $passthroughIdx);
144
145	33	$this->collection[] = [$tagName, $regexp, $passthroughIdx];
146
147	33	return $this->createTag($tagName, $template);
148		}
149
150		/**
151		* Add given attribute to given tag based on parsed captures
152		*
153		* @param Tag $tag
154		* @param string $attrName
155		* @return void
156		*/
157	27	protected function addAttribute(Tag $tag, $attrName)
158		{
159	27	$isUrl = false;
160	27	$exprs = [];
161	27	foreach ($this->captures as $key => $capture)
162		{
163	27	if ($capture['name'] !== $attrName)
164		{
165	27	continue;
166		}
167	27	$exprs[] = $capture['expr'];
168	27	if (isset($this->references['asUrl'][$key]))
169		{
170	27	$isUrl = true;
171		}
172		}
173	27	$exprs = array_unique($exprs);
174
175	27	$regexp = $this->delimiter . '^';
176	27	$regexp .= (count($exprs) === 1) ? $exprs[0] : '(?:' . implode('\|', $exprs) . ')';
177	27	$regexp .= '$' . $this->delimiter . 'D' . $this->modifiers;
178
179	27	$attribute = $tag->attributes->add($attrName);
180
181	27	$filter = $this->configurator->attributeFilters['#regexp'];
182	27	$filter->setRegexp($regexp);
183	27	$attribute->filterChain[] = $filter;
184
185	27	if ($isUrl)
186		{
187	3	$filter = $this->configurator->attributeFilters['#url'];
188	3	$attribute->filterChain[] = $filter;
189		}
190	27	}
191
192		/**
193		* Convert a preg-style replacement to a template
194		*
195		* @param string $template Original template
196		* @param integer $passthroughIdx Index of the passthrough capture
197		* @return string Modified template
198		*/
199	33	protected function convertTemplate($template, $passthroughIdx)
200		{
201		// Replace numeric references in the template with the value of the corresponding attribute
202		// values or passthrough
203	33	$template = TemplateHelper::replaceTokens(
204	33	$template,
205	33	$this->referencesRegexp,
206	33	function ($m, $node) use ($passthroughIdx)
207		{
208	22	$key = (int) trim($m[0], '\\${}');
209	22	if ($key === 0)
210		{
211		// $0 copies the whole textContent
212	1	return ['expression', '.'];
213		}
214	22	if ($key === $passthroughIdx && $node instanceof DOMText)
215		{
216		// Passthrough capture, does not include start/end tags
217	6	return ['passthrough'];
218		}
219	18	if (isset($this->captures[$key]['name']))
220		{
221		// Normal capture, replaced by the equivalent expression
222	17	return ['expression', '@' . $this->captures[$key]['name']];
223		}
224
225		// Non-existent captures are simply ignored, similarly to preg_replace()
226	1	return ['literal', ''];
227	33	}
228		);
229
230		// Unescape backslashes and special characters in the template
231	33	$template = TemplateHelper::replaceTokens(
232	33	$template,
233	33	'(\\\\+[0-9${\\\\])',
234	33	function ($m)
235		{
236	3	return ['literal', stripslashes($m[0])];
237	33	}
238		);
239
240	33	return $template;
241		}
242
243		/**
244		* Create the tag that matches current regexp
245		*
246		* @param string $tagName
247		* @param string $template
248		* @return Tag
249		*/
250	33	protected function createTag($tagName, $template)
251		{
252	33	$tag = new Tag;
253	33	foreach ($this->captures as $key => $capture)
254		{
255	33	if (!isset($capture['name']))
256		{
257	33	continue;
258		}
259
260	27	$attrName = $capture['name'];
261	27	if (isset($tag->attributes[$attrName]))
262		{
263	1	continue;
264		}
265
266	27	$this->addAttribute($tag, $attrName);
267		}
268	33	$tag->template = $template;
269
270		// Normalize the tag's template
271	33	$this->configurator->templateNormalizer->normalizeTag($tag);
272
273		// Check the safeness of this tag
274	33	$this->configurator->templateChecker->checkTag($tag);
275
276	31	return $this->configurator->tags->add($tagName, $tag);
277		}
278
279		/**
280		* Give a name to unnamed captures that are referenced in current replacement
281		*
282		* @param string $regexp Original regexp
283		* @return string Modified regexp
284		*/
285	33	protected function fixUnnamedCaptures($regexp)
286		{
287	33	$keys = [];
288	33	foreach ($this->references['anywhere'] as $key)
289		{
290	21	$capture = $this->captures[$key];
291	21	if (!$key \|\| isset($capture['name']))
292		{
293	2	continue;
294		}
295		// Give the capture a name if it's used as URL or it's not a passthrough
296	20	if (isset($this->references['asUrl'][$key]) \|\| !isset($capture['passthrough']))
297		{
298	20	$keys[] = $key;
299		}
300		}
301
302		// Alter the original regexp to inject the subpatterns' names. The position is equal to the
303		// subpattern's position plus 2, to account for the delimiter at the start of the regexp and
304		// the opening parenthesis of the subpattern. Also, we need to process them in reverse order
305		// so that replacements don't change the position of subsequent subpatterns
306	33	rsort($keys);
307	33	foreach ($keys as $key)
308		{
309	16	$name = '_' . $key;
310	16	$pos = $this->captures[$key]['pos'];
311	16	$regexp = substr_replace($regexp, "?'" . $name . "'", 2 + $pos, 0);
312	16	$this->captures[$key]['name'] = $name;
313		}
314
315	33	return $regexp;
316		}
317
318		/**
319		* Get the index of the capture used for passthrough in current replacement
320		*
321		* @return integer
322		*/
323	33	protected function getPassthroughCapture()
324		{
325	33	$passthrough = 0;
326	33	foreach ($this->references['inText'] as $key)
327		{
328	21	if (!$this->isCatchAll($this->captures[$key]['expr']))
329		{
330		// Ignore if it's not a catch-all expression such as .*?
331	14	continue;
332		}
333	7	if ($passthrough)
334		{
335		// Abort if there's more than 1 possible passthrough
336	1	$passthrough = 0;
337	1	break;
338		}
339	7	$passthrough = (int) $key;
340		}
341
342	33	return $passthrough;
343		}
344
345		/**
346		* Parse a regexp and return its info
347		*
348		* @param string $regexp
349		* @return array
350		*/
351	35	protected function getRegexpInfo($regexp)
352		{
353	35	if (@preg_match_all($regexp, '') === false)
354		{
355	1	throw new InvalidArgumentException('Invalid regexp');
356		}
357
358	34	return RegexpParser::parse($regexp);
359		}
360
361		/**
362		* Test whether given expression is a catch-all expression such as .*?
363		*
364		* @param string $expr Subpattern
365		* @return bool
366		*/
367	22	protected function isCatchAll($expr)
368		{
369	22	return (bool) preg_match('(^\\.[*+]\\??$)D', $expr);
370		}
371
372		/**
373		* Parse given regexp and store its information
374		*
375		* @param string $regexp
376		* @return void
377		*/
378	35	protected function parseRegexp($regexp)
379		{
380	35	$this->captures = [['name' => null, 'expr' => null]];
381	35	$regexpInfo = $this->getRegexpInfo($regexp);
382	34	$this->delimiter = $regexpInfo['delimiter'];
383	34	$this->modifiers = str_replace('D', '', $regexpInfo['modifiers']);
384	34	foreach ($regexpInfo['tokens'] as $token)
385		{
386	33	if ($token['type'] !== 'capturingSubpatternStart')
387		{
388	33	continue;
389		}
390	32	$this->captures[] = [
391	32	'pos' => $token['pos'],
392	32	'name' => (isset($token['name'])) ? $token['name'] : null,
393	32	'expr' => $token['content']
394		];
395		}
396	34	}
397
398		/**
399		* Parse given template and store the references it contains
400		*
401		* @param string $template
402		* @return void
403		*/
404	33	protected function parseTemplate($template)
405		{
406	33	$this->references = [
407		'anywhere' => [],
408		'asUrl' => [],
409		'inText' => []
410		];
411
412	33	preg_match_all($this->referencesRegexp, $template, $matches);
413	33	foreach ($matches[0] as $match)
414		{
415	22	$key = trim($match, '\\${}');
416	22	$this->references['anywhere'][$key] = $key;
417		}
418
419	33	$dom = TemplateHelper::loadTemplate($template);
420	33	$xpath = new DOMXPath($dom);
421	33	foreach ($xpath->query('//text()') as $node)
422		{
423	22	preg_match_all($this->referencesRegexp, $node->textContent, $matches);
424	22	foreach ($matches[0] as $match)
425		{
426	22	$key = trim($match, '\\${}');
427	22	$this->references['inText'][$key] = $key;
428		}
429		}
430
431	33	foreach (TemplateHelper::getURLNodes($dom) as $node)
432		{
433		// We only bother with literal attributes that start with a capture
434	4	if ($node instanceof DOMAttr
435	4	&& preg_match('(^(?:[$\\\\]\\d+\|\\$\\{\\d+\\}))', trim($node->value), $m))
436		{
437	3	$key = trim($m[0], '\\${}');
438	4	$this->references['asUrl'][$key] = $key;
439		}
440		}
441
442	33	$this->removeUnknownReferences();
443	33	}
444
445		/**
446		* Remove references that do not correspond to an existing capture
447		*
448		* @return void
449		*/
450	33	protected function removeUnknownReferences()
451		{
452	33	foreach ($this->references as &$references)
453		{
454	33	$references = array_intersect_key($references, $this->captures);
455		}
456		}
457		}

s9e / TextFormatter

Push — master ( d91fed...fd66aa )

Configurator::fixUnnamedCaptures() B

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like