|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace ValueParsers; |
|
4
|
|
|
|
|
5
|
|
|
/** |
|
6
|
|
|
* A rudimentary ValueParser capable of extracting era information from any date and time string. It |
|
7
|
|
|
* checks for signs as in "-150,000" as well as suffixes as in "150,000 BC". |
|
8
|
|
|
* |
|
9
|
|
|
* @since 0.8 |
|
10
|
|
|
* |
|
11
|
|
|
* @license GPL-2.0+ |
|
12
|
|
|
* @author Addshore |
|
13
|
|
|
* @author Thiemo Mättig |
|
14
|
|
|
*/ |
|
15
|
|
|
class EraParser extends StringValueParser { |
|
16
|
|
|
|
|
17
|
|
|
const FORMAT_NAME = 'era'; |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* @since 0.8 |
|
21
|
|
|
*/ |
|
22
|
|
|
const BEFORE_COMMON_ERA = '-'; |
|
23
|
|
|
|
|
24
|
|
|
/** |
|
25
|
|
|
* @since 0.8 |
|
26
|
|
|
*/ |
|
27
|
|
|
const COMMON_ERA = '+'; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @param string $value |
|
31
|
|
|
* |
|
32
|
|
|
* @throws ParseException |
|
33
|
|
|
* @return string[] Array of the parsed era constant and the value with the era stripped. |
|
34
|
|
|
*/ |
|
35
|
38 |
|
protected function stringParse( $value ) { |
|
36
|
38 |
|
$value = trim( $value ); |
|
37
|
|
|
|
|
38
|
38 |
|
$eraFromSign = $this->parseEraFromSign( $value ); |
|
39
|
38 |
|
$eraFromSuffix = $this->parseEraFromSuffix( $value ); |
|
40
|
|
|
|
|
41
|
38 |
|
if ( $eraFromSign && $eraFromSuffix ) { |
|
42
|
8 |
|
throw new ParseException( |
|
43
|
8 |
|
'Parsed two eras from the same string', |
|
44
|
8 |
|
$value, |
|
45
|
8 |
|
self::FORMAT_NAME |
|
46
|
|
|
); |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
// Default to CE |
|
50
|
30 |
|
return $eraFromSign ?: $eraFromSuffix ?: array( self::COMMON_ERA, $value ); |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* @param string $value |
|
55
|
|
|
* |
|
56
|
|
|
* @return string[]|null Array of the era constant and the value with the era stripped, or null |
|
57
|
|
|
* if not successful. |
|
58
|
|
|
*/ |
|
59
|
38 |
|
private function parseEraFromSign( $value ) { |
|
60
|
38 |
|
$sign = substr( $value, 0, 1 ); |
|
61
|
|
|
|
|
62
|
38 |
|
if ( $sign === self::BEFORE_COMMON_ERA || $sign === self::COMMON_ERA ) { |
|
63
|
|
|
return array( |
|
64
|
13 |
|
$sign, |
|
65
|
13 |
|
substr( $value, 1 ) |
|
66
|
|
|
); |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
25 |
|
return null; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* @param string $value |
|
74
|
|
|
* |
|
75
|
|
|
* @return string[]|null Array of the era constant and the value with the era stripped, or null |
|
76
|
|
|
* if not successful. |
|
77
|
|
|
*/ |
|
78
|
38 |
|
private function parseEraFromSuffix( $value ) { |
|
79
|
38 |
|
if ( preg_match( |
|
80
|
38 |
|
'/(?:B\.?\s*C\.?(?:\s*E\.?)?|Before\s+C(?:hrist|(?:ommon|urrent|hristian)\s+Era))$/i', |
|
81
|
38 |
|
$value, |
|
82
|
38 |
|
$matches, |
|
83
|
38 |
|
PREG_OFFSET_CAPTURE ) |
|
84
|
|
|
) { |
|
85
|
|
|
return array( |
|
86
|
16 |
|
self::BEFORE_COMMON_ERA, |
|
87
|
16 |
|
rtrim( substr( $value, 0, $matches[0][1] ) ) |
|
88
|
|
|
); |
|
89
|
22 |
|
} elseif ( preg_match( |
|
90
|
22 |
|
'/(?:C\.?\s*E\.?|A\.?\s*D\.?|C(?:ommon|urrent|hristian)\s+Era|After\s+Christ|Anno\s+Domini)$/i', |
|
91
|
22 |
|
$value, |
|
92
|
22 |
|
$matches, |
|
93
|
22 |
|
PREG_OFFSET_CAPTURE |
|
94
|
|
|
) ) { |
|
95
|
|
|
return array( |
|
96
|
14 |
|
self::COMMON_ERA, |
|
97
|
14 |
|
rtrim( substr( $value, 0, $matches[0][1] ) ) |
|
98
|
|
|
); |
|
99
|
|
|
} |
|
100
|
|
|
|
|
101
|
8 |
|
return null; |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
} |
|
105
|
|
|
|
DataValues /
Time
