|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* this file is part of pipelines */ |
|
4
|
|
|
|
|
5
|
|
|
namespace Ktomk\Pipelines\Value; |
|
6
|
|
|
|
|
7
|
|
|
use Ktomk\Pipelines\Lib; |
|
8
|
|
|
|
|
9
|
|
|
/** |
|
10
|
|
|
* Class StepExpression |
|
11
|
|
|
* |
|
12
|
|
|
* @package Ktomk\Pipelines\Value |
|
13
|
|
|
*/ |
|
14
|
|
|
class StepExpression |
|
15
|
|
|
{ |
|
16
|
|
|
/** |
|
17
|
|
|
* @var array 1-3, -5, 1- |
|
18
|
|
|
*/ |
|
19
|
|
|
private $segments; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* @param string $expression |
|
23
|
|
|
* |
|
24
|
|
|
* @return StepExpression |
|
25
|
|
|
*/ |
|
26
|
31 |
|
public static function createFromString($expression) |
|
27
|
|
|
{ |
|
28
|
31 |
|
return new self(self::parseSegments($expression)); |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* Is a step expression syntactically valid? |
|
33
|
|
|
* |
|
34
|
|
|
* @param string $expression |
|
35
|
|
|
* |
|
36
|
|
|
* @return bool |
|
37
|
|
|
*/ |
|
38
|
14 |
|
public static function validate($expression) |
|
39
|
|
|
{ |
|
40
|
|
|
try { |
|
41
|
14 |
|
self::parseSegments($expression); |
|
42
|
4 |
|
} catch (\InvalidArgumentException $ex) { |
|
43
|
4 |
|
return false; |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
10 |
|
return true; |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* @param $buffer |
|
51
|
|
|
* |
|
52
|
|
|
* @return array|string[] |
|
53
|
|
|
*/ |
|
54
|
45 |
|
private static function parseSegments($buffer) |
|
55
|
|
|
{ |
|
56
|
45 |
|
$normalized = preg_replace(array('~\s+~', '~(\d+)\s+(-)~', '~(-)\s+(\d+)+~'), array(' ', '\\1\\2', '\\1\\2'), $buffer); |
|
57
|
45 |
|
if (empty($normalized)) { |
|
58
|
3 |
|
throw new \InvalidArgumentException(sprintf('No steps: "%s"', $buffer)); |
|
59
|
|
|
} |
|
60
|
|
|
|
|
61
|
42 |
|
$result = preg_split('~\s*(?:,|\s)\s*~', $normalized, 64, PREG_SPLIT_NO_EMPTY); |
|
62
|
42 |
|
if (empty($result)) { |
|
63
|
2 |
|
throw new \InvalidArgumentException(sprintf('No steps: "%s"', $buffer)); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
40 |
|
$array = array(); |
|
67
|
40 |
|
foreach ($result as $segmentBuffer) { |
|
68
|
40 |
|
$array[] = self::parseSegment($segmentBuffer); |
|
69
|
|
|
} |
|
70
|
|
|
|
|
71
|
33 |
|
return $array; |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
/** |
|
75
|
|
|
* Parse (better: normalize) segment |
|
76
|
|
|
* |
|
77
|
|
|
* @param string $buffer |
|
78
|
|
|
* |
|
79
|
|
|
* @return string |
|
80
|
|
|
*/ |
|
81
|
40 |
|
private static function parseSegment($buffer) |
|
82
|
|
|
{ |
|
83
|
40 |
|
$segment = preg_replace('~\s+~', '', $buffer); |
|
84
|
40 |
|
if (null === $segment) { |
|
85
|
|
|
// @codeCoverageIgnoreStart |
|
86
|
|
|
throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s"', $buffer)); |
|
87
|
|
|
// @codeCoverageIgnoreEnd |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
40 |
|
$result = preg_match('~^(?:(?:[1-9]\d*)?-(?:[1-9]\d*)?|(?:[1-9]\d*))$~', $segment); |
|
91
|
40 |
|
if (false === $result || 0 === $result || '-' === $segment) { |
|
92
|
7 |
|
if ($buffer !== $segment) { |
|
93
|
|
|
// @codeCoverageIgnoreStart |
|
94
|
|
|
throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s" (from "%s")', $segment, $buffer)); |
|
95
|
|
|
// @codeCoverageIgnoreEnd |
|
96
|
|
|
} |
|
97
|
7 |
|
throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s"', $segment)); |
|
98
|
|
|
} |
|
99
|
|
|
|
|
100
|
33 |
|
return $segment; |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
|
|
/** |
|
104
|
|
|
* StepExpression constructor. |
|
105
|
|
|
* |
|
106
|
|
|
* @param array $segments |
|
107
|
|
|
*/ |
|
108
|
24 |
|
public function __construct(array $segments) |
|
109
|
|
|
{ |
|
110
|
24 |
|
$this->segments = $segments; |
|
111
|
24 |
|
} |
|
112
|
|
|
|
|
113
|
|
|
/** |
|
114
|
|
|
* @return array |
|
115
|
|
|
*/ |
|
116
|
10 |
|
public function getSegments() |
|
117
|
|
|
{ |
|
118
|
10 |
|
return $this->segments; |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
/** |
|
122
|
|
|
* @param mixed $countable |
|
123
|
|
|
* |
|
124
|
|
|
* @return mixed |
|
125
|
|
|
*/ |
|
126
|
12 |
|
public function resolveCountable($countable) |
|
127
|
|
|
{ |
|
128
|
12 |
|
return $this->resolveCount(count($countable)); |
|
129
|
|
|
} |
|
130
|
|
|
|
|
131
|
|
|
/** |
|
132
|
|
|
* @param int $count |
|
133
|
|
|
*/ |
|
134
|
13 |
|
public function resolveCount($count) |
|
135
|
|
|
{ |
|
136
|
13 |
|
if (0 === $count || !is_int($count)) { |
|
137
|
1 |
|
throw new \InvalidArgumentException('Count is zero'); |
|
138
|
|
|
} |
|
139
|
|
|
|
|
140
|
12 |
|
$range = Lib::merge(array_map(self::resolveSegmentFunctor($count), $this->segments)); |
|
141
|
10 |
|
return call_user_func_array('array_merge', $range); |
|
142
|
|
|
} |
|
143
|
|
|
|
|
144
|
|
|
/** |
|
145
|
|
|
* @param int $count |
|
146
|
|
|
*/ |
|
147
|
|
|
private static function resolveSegmentFunctor($count) |
|
148
|
|
|
{ |
|
149
|
12 |
|
return function ($segment) use ($count) { |
|
150
|
12 |
|
return StepExpression::resolveSegmentCount($segment, $count); |
|
151
|
12 |
|
}; |
|
152
|
|
|
} |
|
153
|
|
|
|
|
154
|
12 |
|
public static function resolveSegmentCount($segment, $count) |
|
155
|
|
|
{ |
|
156
|
12 |
|
$pos = strpos($segment, '-'); |
|
157
|
12 |
|
list($from, $to) = explode('-', $segment, 2) + array('', ''); |
|
158
|
|
|
|
|
159
|
12 |
|
if (false === $pos) { |
|
160
|
4 |
|
return array(self::verifyValueCount((int)Lib::emptyCoalesce($from, $to), $count)); |
|
161
|
|
|
} |
|
162
|
|
|
|
|
163
|
8 |
|
if (empty($to)) { |
|
164
|
3 |
|
return range(self::verifyValueCount($from, $count), $count); |
|
165
|
|
|
} |
|
166
|
|
|
|
|
167
|
7 |
|
if (empty($from)) { |
|
168
|
3 |
|
return range(self::verifyValueCount(1, $count), self::verifyValueCount($to, $count)); |
|
169
|
|
|
} |
|
170
|
|
|
|
|
171
|
4 |
|
return range(self::verifyValueCount($from, $count), self::verifyValueCount($to, $count)); |
|
172
|
|
|
} |
|
173
|
|
|
|
|
174
|
|
|
/** |
|
175
|
|
|
* @param int $value |
|
176
|
|
|
* @param int $count |
|
177
|
|
|
* |
|
178
|
|
|
* @return int |
|
179
|
|
|
*/ |
|
180
|
12 |
|
private static function verifyValueCount($value, $count) |
|
181
|
|
|
{ |
|
182
|
12 |
|
if ($value > $count) { |
|
183
|
2 |
|
throw new \InvalidArgumentException(sprintf('%d is out of range (%d)', $value, $count)); |
|
184
|
|
|
} |
|
185
|
|
|
|
|
186
|
11 |
|
return $value; |
|
187
|
|
|
} |
|
188
|
|
|
} |
|
189
|
|
|
|
ktomk /
pipelines
