mantis-matrix-integration – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 <?php
2  
3 declare(strict_types=1);
4  
5 namespace GuzzleHttp\Psr7;
6  
7 use Psr\Http\Message\StreamInterface;
8  
9 /**
10 * Compose stream implementations based on a hash of functions.
11 *
12 * Allows for easy testing and extension of a provided stream without needing
13 * to create a concrete class for a simple extension point.
14 */
15 #[\AllowDynamicProperties]
16 final class FnStream implements StreamInterface
17 {
18 private const SLOTS = [
19 '__toString', 'close', 'detach', 'rewind',
20 'getSize', 'tell', 'eof', 'isSeekable', 'seek', 'isWritable', 'write',
21 'isReadable', 'read', 'getContents', 'getMetadata',
22 ];
23  
24 /** @var array<string, callable> */
25 private $methods;
26  
27 /**
28 * @param array<string, callable> $methods Hash of method name to a callable.
29 */
30 public function __construct(array $methods)
31 {
32 $this->methods = $methods;
33  
34 // Create the functions on the class
35 foreach ($methods as $name => $fn) {
36 $this->{'_fn_'.$name} = $fn;
37 }
38 }
39  
40 /**
41 * Lazily determine which methods are not implemented.
42 *
43 * @throws \BadMethodCallException
44 */
45 public function __get(string $name): void
46 {
47 throw new \BadMethodCallException(str_replace('_fn_', '', $name)
48 .'() is not implemented in the FnStream');
49 }
50  
51 /**
52 * The close method is called on the underlying stream only if possible.
53 */
54 public function __destruct()
55 {
56 if (isset($this->_fn_close)) {
57 ($this->_fn_close)();
58 }
59 }
60  
61 /**
62 * An unserialize would allow the __destruct to run when the unserialized value goes out of scope.
63 *
64 * @throws \LogicException
65 */
66 public function __wakeup(): void
67 {
68 throw new \LogicException('FnStream should never be unserialized');
69 }
70  
71 /**
72 * Adds custom functionality to an underlying stream by intercepting
73 * specific method calls.
74 *
75 * @param StreamInterface $stream Stream to decorate
76 * @param array<string, callable> $methods Hash of method name to a closure
77 *
78 * @return FnStream
79 */
80 public static function decorate(StreamInterface $stream, array $methods)
81 {
82 // If any of the required methods were not provided, then simply
83 // proxy to the decorated stream.
84 foreach (array_diff(self::SLOTS, array_keys($methods)) as $diff) {
85 /** @var callable $callable */
86 $callable = [$stream, $diff];
87 $methods[$diff] = $callable;
88 }
89  
90 return new self($methods);
91 }
92  
93 public function __toString(): string
94 {
95 try {
96 /** @var string */
97 return ($this->_fn___toString)();
98 } catch (\Throwable $e) {
99 if (\PHP_VERSION_ID >= 70400) {
100 throw $e;
101 }
102 trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
103  
104 return '';
105 }
106 }
107  
108 public function close(): void
109 {
110 ($this->_fn_close)();
111 }
112  
113 public function detach()
114 {
115 return ($this->_fn_detach)();
116 }
117  
118 public function getSize(): ?int
119 {
120 return ($this->_fn_getSize)();
121 }
122  
123 public function tell(): int
124 {
125 return ($this->_fn_tell)();
126 }
127  
128 public function eof(): bool
129 {
130 return ($this->_fn_eof)();
131 }
132  
133 public function isSeekable(): bool
134 {
135 return ($this->_fn_isSeekable)();
136 }
137  
138 public function rewind(): void
139 {
140 ($this->_fn_rewind)();
141 }
142  
143 public function seek($offset, $whence = SEEK_SET): void
144 {
145 ($this->_fn_seek)($offset, $whence);
146 }
147  
148 public function isWritable(): bool
149 {
150 return ($this->_fn_isWritable)();
151 }
152  
153 public function write($string): int
154 {
155 return ($this->_fn_write)($string);
156 }
157  
158 public function isReadable(): bool
159 {
160 return ($this->_fn_isReadable)();
161 }
162  
163 public function read($length): string
164 {
165 return ($this->_fn_read)($length);
166 }
167  
168 public function getContents(): string
169 {
170 return ($this->_fn_getContents)();
171 }
172  
173 /**
174 * @return mixed
175 */
176 public function getMetadata($key = null)
177 {
178 return ($this->_fn_getMetadata)($key);
179 }
180 }