depicter / modules / GuzzleHttp / Psr7 / StreamDecoratorTrait.php

StreamDecoratorTrait.php in Depicter — Popup & Slider Builder trunk, at modules/GuzzleHttp/Psr7/StreamDecoratorTrait.php

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1	<?php
2
3	declare(strict_types=1);
4
5	namespace Depicter\GuzzleHttp\Psr7;
6
7	use Depicter\Psr\Http\Message\StreamInterface;
8
9	/**
10	* Stream decorator trait
11	*
12	* @property StreamInterface $stream
13	*/
14	trait StreamDecoratorTrait
15	{
16	/**
17	* @param StreamInterface $stream Stream to decorate
18	*/
19	public function __construct(StreamInterface $stream)
20	{
21	$this->stream = $stream;
22	}
23
24	/**
25	* Magic method used to create a new stream if streams are not added in
26	* the constructor of a decorator (e.g., LazyOpenStream).
27	*
28	* @return StreamInterface
29	*/
30	public function __get(string $name)
31	{
32	if ($name === 'stream') {
33	$this->stream = $this->createStream();
34
35	return $this->stream;
36	}
37
38	throw new \UnexpectedValueException("$name not found on class");
39	}
40
41	public function __toString(): string
42	{
43	try {
44	if ($this->isSeekable()) {
45	$this->seek(0);
46	}
47
48	return $this->getContents();
49	} catch (\Throwable $e) {
50	if (\PHP_VERSION_ID >= 70400) {
51	throw $e;
52	}
53	trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
54
55	return '';
56	}
57	}
58
59	public function getContents(): string
60	{
61	return Utils::copyToString($this);
62	}
63
64	/**
65	* Allow decorators to implement custom methods
66	*
67	* @return mixed
68	*/
69	public function __call(string $method, array $args)
70	{
71	/** @var callable $callable */
72	$callable = [$this->stream, $method];
73	$result = ($callable)(...$args);
74
75	// Always return the wrapped object if the result is a return $this
76	return $result === $this->stream ? $this : $result;
77	}
78
79	public function close(): void
80	{
81	$this->stream->close();
82	}
83
84	/**
85	* @return mixed
86	*/
87	public function getMetadata($key = null)
88	{
89	return $this->stream->getMetadata($key);
90	}
91
92	public function detach()
93	{
94	return $this->stream->detach();
95	}
96
97	public function getSize(): ?int
98	{
99	return $this->stream->getSize();
100	}
101
102	public function eof(): bool
103	{
104	return $this->stream->eof();
105	}
106
107	public function tell(): int
108	{
109	return $this->stream->tell();
110	}
111
112	public function isReadable(): bool
113	{
114	return $this->stream->isReadable();
115	}
116
117	public function isWritable(): bool
118	{
119	return $this->stream->isWritable();
120	}
121
122	public function isSeekable(): bool
123	{
124	return $this->stream->isSeekable();
125	}
126
127	public function rewind(): void
128	{
129	$this->seek(0);
130	}
131
132	public function seek($offset, $whence = SEEK_SET): void
133	{
134	$this->stream->seek($offset, $whence);
135	}
136
137	public function read($length): string
138	{
139	return $this->stream->read($length);
140	}
141
142	public function write($string): int
143	{
144	return $this->stream->write($string);
145	}
146
147	/**
148	* Implement in subclasses to dynamically create streams when requested.
149	*
150	* @throws \BadMethodCallException
151	*/
152	protected function createStream(): StreamInterface
153	{
154	throw new \BadMethodCallException('Not implemented');
155	}
156	}
157