|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Yiisoft\Strings; |
|
6
|
|
|
|
|
7
|
|
|
/** |
|
8
|
|
|
* `CombinedRegexp` optimizes matching of multiple regular expressions. |
|
9
|
|
|
* Read more about the concept in |
|
10
|
|
|
* {@see https://nikic.github.io/2014/02/18/Fast-request-routing-using-regular-expressions.html}. |
|
11
|
|
|
*/ |
|
12
|
|
|
final class MemoizedCombinedRegexp |
|
13
|
|
|
{ |
|
14
|
|
|
private CombinedRegexp $combinedRegexp; |
|
15
|
|
|
|
|
16
|
|
|
private array $results = []; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* @param string[] $patterns Regular expressions to combine. |
|
20
|
|
|
* @param string $flags Flags to apply to all regular expressions. |
|
21
|
|
|
*/ |
|
22
|
|
|
public function __construct( |
|
23
|
|
|
private array $patterns, |
|
24
|
|
|
string $flags = '' |
|
25
|
|
|
) { |
|
26
|
|
|
$this->combinedRegexp = new CombinedRegexp($patterns, $flags); |
|
27
|
|
|
} |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @return string The compiled pattern. |
|
31
|
|
|
*/ |
|
32
|
|
|
public function getCompiledPattern(): string |
|
33
|
|
|
{ |
|
34
|
|
|
return $this->combinedRegexp->getCompiledPattern(); |
|
35
|
|
|
} |
|
36
|
|
|
|
|
37
|
|
|
/** |
|
38
|
|
|
* Returns `true` whether the given string matches any of the patterns, `false` - otherwise. |
|
39
|
|
|
*/ |
|
40
|
|
|
public function matches(string $string): bool |
|
41
|
|
|
{ |
|
42
|
|
|
$this->evaluate($string); |
|
43
|
|
|
|
|
44
|
|
|
return $this->results[$string]['matches']; |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* Returns pattern that matches the given string. |
|
49
|
|
|
* @throws \Exception if the string does not match any of the patterns. |
|
50
|
|
|
*/ |
|
51
|
|
|
public function getMatchingPattern(string $string): string |
|
52
|
|
|
{ |
|
53
|
|
|
$this->evaluate($string); |
|
54
|
|
|
|
|
55
|
|
|
return $this->patterns[$this->getMatchingPatternPosition($string)]; |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* Returns position of the pattern that matches the given string. |
|
60
|
|
|
* @throws \Exception if the string does not match any of the patterns. |
|
61
|
|
|
*/ |
|
62
|
|
|
public function getMatchingPatternPosition(string $string): int |
|
63
|
|
|
{ |
|
64
|
|
|
$this->evaluate($string); |
|
65
|
|
|
|
|
66
|
|
|
return $this->results[$string]['position'] ?? throw new \Exception( |
|
67
|
|
|
sprintf( |
|
68
|
|
|
'Failed to match pattern "%s" with string "%s".', |
|
69
|
|
|
$this->getCompiledPattern(), |
|
70
|
|
|
$string, |
|
71
|
|
|
) |
|
72
|
|
|
); |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
protected function evaluate(string $string): void |
|
76
|
|
|
{ |
|
77
|
|
|
if (isset($this->results[$string])) { |
|
78
|
|
|
return; |
|
79
|
|
|
} |
|
80
|
|
|
try { |
|
81
|
|
|
$position = $this->combinedRegexp->getMatchingPatternPosition($string); |
|
82
|
|
|
|
|
83
|
|
|
$this->results[$string]['matches'] = true; |
|
84
|
|
|
$this->results[$string]['position'] = $position; |
|
85
|
|
|
} catch (\Exception) { |
|
86
|
|
|
$this->results[$string]['matches'] = false; |
|
87
|
|
|
} |
|
88
|
|
|
} |
|
89
|
|
|
} |
|
90
|
|
|
|
yiisoft /
strings
