|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace League\JsonReference; |
|
4
|
|
|
|
|
5
|
|
|
use League\JsonReference\Pointer\InvalidPointerException; |
|
6
|
|
|
use League\JsonReference\Pointer\NonExistentValue; |
|
7
|
|
|
|
|
8
|
|
|
/** |
|
9
|
|
|
* A simple JSON Pointer implementation that can traverse |
|
10
|
|
|
* an object resulting from a json_decode() call. |
|
11
|
|
|
* |
|
12
|
|
|
* @see https://tools.ietf.org/html/rfc6901 |
|
13
|
|
|
*/ |
|
14
|
|
|
final class Pointer |
|
15
|
|
|
{ |
|
16
|
|
|
/** |
|
17
|
|
|
* @var object|array |
|
18
|
|
|
*/ |
|
19
|
|
|
private $json; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* @param object|array $json |
|
23
|
|
|
*/ |
|
24
|
90 |
|
public function __construct(&$json) |
|
25
|
|
|
{ |
|
26
|
90 |
|
$this->json = &$json; |
|
27
|
90 |
|
} |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @param string $pointer |
|
31
|
|
|
* |
|
32
|
|
|
* @return mixed |
|
33
|
|
|
* |
|
34
|
|
|
* @throws InvalidPointerException |
|
35
|
|
|
*/ |
|
36
|
58 |
|
public function get($pointer) |
|
37
|
|
|
{ |
|
38
|
58 |
|
$value = $this->getRaw($pointer); |
|
39
|
|
|
|
|
40
|
56 |
|
if ($value instanceof NonExistentValue) { |
|
41
|
6 |
|
throw InvalidPointerException::nonexistentValue($value->getValue()); |
|
42
|
|
|
} |
|
43
|
|
|
|
|
44
|
50 |
|
return $value; |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* @param string $pointer |
|
49
|
|
|
* |
|
50
|
|
|
* @return mixed |
|
51
|
|
|
*/ |
|
52
|
68 |
|
public function getRaw($pointer) |
|
53
|
|
|
{ |
|
54
|
68 |
|
$pointer = $this->parse($pointer); |
|
55
|
|
|
|
|
56
|
66 |
|
return $this->traverse($this->json, $pointer); |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* @param string $pointer |
|
61
|
|
|
* |
|
62
|
|
|
* @return bool |
|
63
|
|
|
*/ |
|
64
|
54 |
|
public function has($pointer) |
|
65
|
|
|
{ |
|
66
|
54 |
|
return !$this->getRaw($pointer) instanceof NonExistentValue; |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* @param string $pointer |
|
71
|
|
|
* @param mixed $data |
|
72
|
|
|
* |
|
73
|
|
|
* @return void |
|
74
|
|
|
* |
|
75
|
|
|
* @throws InvalidPointerException |
|
76
|
|
|
* @throws \InvalidArgumentException |
|
77
|
|
|
* |
|
78
|
|
|
*/ |
|
79
|
58 |
|
public function set($pointer, $data) |
|
80
|
|
|
{ |
|
81
|
58 |
|
if ($pointer === '') { |
|
82
|
2 |
|
throw new \InvalidArgumentException('Cannot replace the object with set.'); |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
56 |
|
$pointer = $this->parse($pointer); |
|
86
|
56 |
|
$replace = array_pop($pointer); |
|
87
|
56 |
|
$target = &$this->getTarget($pointer); |
|
88
|
|
|
|
|
89
|
56 |
|
if (is_array($target)) { |
|
90
|
8 |
|
if ($replace === '-') { |
|
91
|
2 |
|
$target[] = $data; |
|
92
|
1 |
|
} else { |
|
93
|
7 |
|
$target[$replace] = $data; |
|
94
|
|
|
} |
|
95
|
53 |
|
} elseif (is_object($target)) { |
|
96
|
48 |
|
$target->$replace = $data; |
|
97
|
24 |
|
} else { |
|
98
|
2 |
|
throw InvalidPointerException::invalidTarget($target); |
|
99
|
|
|
} |
|
100
|
54 |
|
} |
|
101
|
|
|
|
|
102
|
|
|
/** |
|
103
|
|
|
* @param string $pointer |
|
104
|
|
|
* |
|
105
|
|
|
* @return void |
|
106
|
|
|
*/ |
|
107
|
12 |
|
public function remove($pointer) |
|
108
|
|
|
{ |
|
109
|
12 |
|
if ($pointer === '') { |
|
110
|
|
|
throw new \InvalidArgumentException('Cannot remove the object.'); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
12 |
|
$pointer = $this->parse($pointer); |
|
114
|
12 |
|
$remove = array_pop($pointer); |
|
115
|
12 |
|
$target = &$this->getTarget($pointer); |
|
116
|
|
|
|
|
117
|
12 |
|
if (is_array($target)) { |
|
118
|
2 |
|
unset($target[$remove]); |
|
119
|
11 |
|
} elseif (is_object($target)) { |
|
120
|
10 |
|
unset($target->$remove); |
|
121
|
5 |
|
} else { |
|
122
|
|
|
throw InvalidPointerException::invalidTarget($target); |
|
123
|
|
|
} |
|
124
|
12 |
|
} |
|
125
|
|
|
|
|
126
|
|
|
/** |
|
127
|
|
|
* @param array $pointer |
|
128
|
|
|
* |
|
129
|
|
|
* @return mixed |
|
130
|
|
|
*/ |
|
131
|
64 |
|
private function &getTarget(array $pointer) |
|
132
|
|
|
{ |
|
133
|
64 |
|
$target = &$this->json; |
|
134
|
|
|
|
|
135
|
64 |
|
foreach ($pointer as $segment) { |
|
136
|
46 |
|
if (is_array($target)) { |
|
137
|
6 |
|
$target =& $target[$segment]; |
|
138
|
3 |
|
} else { |
|
139
|
46 |
|
$target =& $target->$segment; |
|
140
|
|
|
} |
|
141
|
32 |
|
} |
|
142
|
|
|
|
|
143
|
64 |
|
return $target; |
|
144
|
|
|
} |
|
145
|
|
|
|
|
146
|
|
|
/** |
|
147
|
|
|
* @param mixed $json The result of a json_decode call or a portion of it. |
|
148
|
|
|
* @param array $pointer The parsed pointer |
|
149
|
|
|
* |
|
150
|
|
|
* @return mixed |
|
151
|
|
|
*/ |
|
152
|
66 |
|
private function traverse($json, $pointer) |
|
153
|
|
|
{ |
|
154
|
66 |
|
foreach ($pointer as $segment) { |
|
155
|
66 |
|
if ($json instanceof Reference) { |
|
156
|
|
|
if (!$json->has($segment)) { |
|
157
|
|
|
return new NonExistentValue($segment); |
|
158
|
|
|
} |
|
159
|
|
|
$json = $json->get($segment); |
|
160
|
66 |
|
} elseif (is_object($json)) { |
|
161
|
|
|
// who does this? |
|
162
|
66 |
|
if ($segment === '' && property_exists($json, '_empty_')) { |
|
163
|
4 |
|
$segment = '_empty_'; |
|
164
|
2 |
|
} |
|
165
|
66 |
|
if (!property_exists($json, $segment)) { |
|
166
|
6 |
|
return new NonExistentValue($segment); |
|
167
|
|
|
} |
|
168
|
64 |
|
$json = $json->$segment; |
|
169
|
38 |
|
} elseif (is_array($json)) { |
|
170
|
12 |
|
if (!array_key_exists($segment, $json)) { |
|
171
|
2 |
|
return new NonExistentValue($segment); |
|
172
|
|
|
} |
|
173
|
10 |
|
$json = $json[$segment]; |
|
174
|
5 |
|
} else { |
|
175
|
33 |
|
return new NonExistentValue($segment); |
|
176
|
|
|
} |
|
177
|
32 |
|
} |
|
178
|
|
|
|
|
179
|
60 |
|
return $json; |
|
180
|
|
|
} |
|
181
|
|
|
|
|
182
|
|
|
/** |
|
183
|
|
|
* Parses a JSON Pointer as defined in the specification. |
|
184
|
|
|
* @see https://tools.ietf.org/html/rfc6901#section-4 |
|
185
|
|
|
* |
|
186
|
|
|
* @param string $pointer |
|
187
|
|
|
* |
|
188
|
|
|
* @return array |
|
189
|
|
|
* |
|
190
|
|
|
* @throws InvalidPointerException |
|
191
|
|
|
*/ |
|
192
|
86 |
|
private function parse($pointer) |
|
193
|
|
|
{ |
|
194
|
86 |
|
if (!is_string($pointer)) { |
|
195
|
2 |
|
throw InvalidPointerException::invalidType(gettype($pointer)); |
|
196
|
|
|
} |
|
197
|
|
|
|
|
198
|
84 |
|
if (!isset($pointer[0])) { |
|
199
|
2 |
|
return []; |
|
200
|
|
|
} |
|
201
|
|
|
|
|
202
|
|
|
// If the pointer is a url fragment, it needs to be url decoded. |
|
203
|
84 |
|
if ($pointer[0] === '#') { |
|
204
|
40 |
|
$pointer = urldecode(substr($pointer, 1)); |
|
205
|
20 |
|
} |
|
206
|
|
|
|
|
207
|
|
|
// For convenience add the beginning slash if it's missing. |
|
208
|
84 |
|
if (isset($pointer[0]) && $pointer[0] !== '/') { |
|
209
|
26 |
|
$pointer = '/' . $pointer; |
|
210
|
13 |
|
} |
|
211
|
|
|
|
|
212
|
84 |
|
$pointer = array_slice(explode('/', $pointer), 1); |
|
213
|
84 |
|
return str_replace(['~1', '~0'], ['/', '~'], $pointer); |
|
214
|
|
|
} |
|
215
|
|
|
} |
|
216
|
|
|
|
thephpleague /
json-reference
