Stream::write() - Code Metrics - Nyholm/psr7 - Measure and Improve Code Quality continuously with Scrutinizer

Stream::write() A
last analyzed 2021-01-30 12:55 UTC

↳ Parent: Stream

Complexity

Conditions	3
Paths	3

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	3.0261

Importance

Changes

Metric	Value
dl	0
loc	15
ccs	6
cts	7
cp	0.8571
rs	9.7666
c	0
b	0
f	0
cc	3
nc	3
nop	1
crap	3.0261

<?php

declare(strict_types=1);

namespace Nyholm\Psr7;

use Psr\Http\Message\StreamInterface;
use Symfony\Component\Debug\ErrorHandler as SymfonyLegacyErrorHandler;
use Symfony\Component\ErrorHandler\ErrorHandler as SymfonyErrorHandler;

/**
 * @author Michael Dowling and contributors to guzzlehttp/psr7
 * @author Tobias Nyholm <[email protected]>
 * @author Martijn van der Ven <[email protected]>
 */
final class Stream implements StreamInterface
{
    /** @var resource|null A resource reference */
    private $stream;

    /** @var bool */
    private $seekable;

    /** @var bool */
    private $readable;

    /** @var bool */
    private $writable;

    /** @var array|mixed|void|null */
    private $uri;

    /** @var int|null */
    private $size;

    /** @var array Hash of readable and writable stream types */
    private const READ_WRITE_HASH = [
        'read' => [
            'r' => true, 'w+' => true, 'r+' => true, 'x+' => true, 'c+' => true,
            'rb' => true, 'w+b' => true, 'r+b' => true, 'x+b' => true,
            'c+b' => true, 'rt' => true, 'w+t' => true, 'r+t' => true,
            'x+t' => true, 'c+t' => true, 'a+' => true,
        ],
        'write' => [
            'w' => true, 'w+' => true, 'rw' => true, 'r+' => true, 'x+' => true,
            'c+' => true, 'wb' => true, 'w+b' => true, 'r+b' => true,
            'x+b' => true, 'c+b' => true, 'w+t' => true, 'r+t' => true,
            'x+t' => true, 'c+t' => true, 'a' => true, 'a+' => true,
        ],
    ];

    private function __construct()
    {
    }

    /**
     * Creates a new PSR-7 stream.
     *
     * @param string|resource|StreamInterface $body
     *
     * @throws \InvalidArgumentException
     */
    public static function create($body = ''): StreamInterface
    {
        if ($body instanceof StreamInterface) {
            return $body;
        }

        if (\is_string($body)) {
            $resource = \fopen('php://temp', 'rw+');
            \fwrite($resource, $body);
            $body = $resource;
        }

        if (\is_resource($body)) {
            $new = new self();
            $new->stream = $body;
            $meta = \stream_get_meta_data($new->stream);
            $new->seekable = $meta['seekable'] && 0 === \fseek($new->stream, 0, \SEEK_CUR);
            $new->readable = isset(self::READ_WRITE_HASH['read'][$meta['mode']]);
            $new->writable = isset(self::READ_WRITE_HASH['write'][$meta['mode']]);
            $new->uri = $new->getMetadata('uri');

            return $new;
        }

        throw new \InvalidArgumentException('First argument to Stream::create() must be a string, resource or StreamInterface.');
    }

    /**
     * Closes the stream when the destructed.
     */
    public function __destruct()
    {
        $this->close();
    }

    /**
     * @return string
     */
    public function __toString()
    {
        try {
            if ($this->isSeekable()) {
                $this->seek(0);
            }

            return $this->getContents();
        } catch (\Throwable $e) {
            if (\PHP_VERSION_ID >= 70400) {
                throw $e;
            }

            if (\is_array($errorHandler = \set_error_handler('var_dump'))) {
                $errorHandler = $errorHandler[0] ?? null;
            }
            \restore_error_handler();

            if ($e instanceof \Error || $errorHandler instanceof SymfonyErrorHandler || $errorHandler instanceof SymfonyLegacyErrorHandler) {
                return \trigger_error((string) $e, \E_USER_ERROR);
            }

            return '';
        }
    }

    public function close(): void
    {
        if (isset($this->stream)) {
            if (\is_resource($this->stream)) {
                \fclose($this->stream);
            }
            $this->detach();
        }
    }

    public function detach()
    {
        if (!isset($this->stream)) {
            return null;
        }

        $result = $this->stream;
        unset($this->stream);
        $this->size = $this->uri = null;
        $this->readable = $this->writable = $this->seekable = false;

        return $result;
    }

    public function getSize(): ?int
    {
        if (null !== $this->size) {
            return $this->size;
        }

        if (!isset($this->stream)) {
            return null;
        }

        // Clear the stat cache if the stream has a URI
        if ($this->uri) {
            \clearstatcache(true, $this->uri);
        }

        $stats = \fstat($this->stream);
        if (isset($stats['size'])) {
            $this->size = $stats['size'];

            return $this->size;
        }

        return null;
    }

    public function tell(): int
    {
        if (false === $result = \ftell($this->stream)) {
            throw new \RuntimeException('Unable to determine stream position');
        }

        return $result;
    }

    public function eof(): bool
    {
        return !$this->stream || \feof($this->stream);
    }

    public function isSeekable(): bool
    {
        return $this->seekable;
    }

    public function seek($offset, $whence = \SEEK_SET): void
    {
        if (!$this->seekable) {
            throw new \RuntimeException('Stream is not seekable');
        }

        if (-1 === \fseek($this->stream, $offset, $whence)) {
            throw new \RuntimeException('Unable to seek to stream position ' . $offset . ' with whence ' . \var_export($whence, true));
        }
    }

    public function rewind(): void
    {
        $this->seek(0);
    }

    public function isWritable(): bool
    {
        return $this->writable;
    }

    public function write($string): int
    {
        if (!$this->writable) {
            throw new \RuntimeException('Cannot write to a non-writable stream');
        }

        // We can't know the size after writing anything
        $this->size = null;

        if (false === $result = \fwrite($this->stream, $string)) {
            throw new \RuntimeException('Unable to write to stream');
        }

        return $result;
    }

    public function isReadable(): bool
    {
        return $this->readable;
    }

    public function read($length): string
    {
        if (!$this->readable) {
            throw new \RuntimeException('Cannot read from non-readable stream');
        }

        if (false === $result = \fread($this->stream, $length)) {
            throw new \RuntimeException('Unable to read from stream');
        }

        return $result;
    }

    public function getContents(): string
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Unable to read stream contents');
        }

        if (false === $contents = \stream_get_contents($this->stream)) {
            throw new \RuntimeException('Unable to read stream contents');
        }

        return $contents;
    }

    public function getMetadata($key = null)
    {
        if (!isset($this->stream)) {
            return $key ? null : [];
        }

        $meta = \stream_get_meta_data($this->stream);

        if (null === $key) {
            return $meta;
        }

        return $meta[$key] ?? null;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Nyholm\Psr7;
6
7		use Psr\Http\Message\StreamInterface;
8		use Symfony\Component\Debug\ErrorHandler as SymfonyLegacyErrorHandler;
9		use Symfony\Component\ErrorHandler\ErrorHandler as SymfonyErrorHandler;
10
11		/**
12		* @author Michael Dowling and contributors to guzzlehttp/psr7
13		* @author Tobias Nyholm <[email protected]>
14		* @author Martijn van der Ven <[email protected]>
15		*/
16		final class Stream implements StreamInterface
17		{
18		/** @var resource\|null A resource reference */
19		private $stream;
20
21		/** @var bool */
22		private $seekable;
23
24		/** @var bool */
25		private $readable;
26
27		/** @var bool */
28		private $writable;
29
30		/** @var array\|mixed\|void\|null */
31		private $uri;
32
33		/** @var int\|null */
34		private $size;
35
36		/** @var array Hash of readable and writable stream types */
37		private const READ_WRITE_HASH = [
38		'read' => [
39		'r' => true, 'w+' => true, 'r+' => true, 'x+' => true, 'c+' => true,
40		'rb' => true, 'w+b' => true, 'r+b' => true, 'x+b' => true,
41		'c+b' => true, 'rt' => true, 'w+t' => true, 'r+t' => true,
42		'x+t' => true, 'c+t' => true, 'a+' => true,
43		],
44		'write' => [
45		'w' => true, 'w+' => true, 'rw' => true, 'r+' => true, 'x+' => true,
46		'c+' => true, 'wb' => true, 'w+b' => true, 'r+b' => true,
47		'x+b' => true, 'c+b' => true, 'w+t' => true, 'r+t' => true,
48		'x+t' => true, 'c+t' => true, 'a' => true, 'a+' => true,
49		],
50		];
51
52	55	private function __construct()
53		{
54	55	}
55
56		/**
57		* Creates a new PSR-7 stream.
58		*
59		* @param string\|resource\|StreamInterface $body
60		*
61		* @throws \InvalidArgumentException
62		*/
63	55	public static function create($body = ''): StreamInterface
64		{
65	55	if ($body instanceof StreamInterface) {
66		return $body;
67		}
68
69	55	if (\is_string($body)) {
70	21	$resource = \fopen('php://temp', 'rw+');
71	21	\fwrite($resource, $body);
72	21	$body = $resource;
73		}
74
75	55	if (\is_resource($body)) {
76	55	$new = new self();
77	55	$new->stream = $body;
78	55	$meta = \stream_get_meta_data($new->stream);
79	55	$new->seekable = $meta['seekable'] && 0 === \fseek($new->stream, 0, \SEEK_CUR);
80	55	$new->readable = isset(self::READ_WRITE_HASH['read'][$meta['mode']]);
81	55	$new->writable = isset(self::READ_WRITE_HASH['write'][$meta['mode']]);
82	55	$new->uri = $new->getMetadata('uri');
83
84	55	return $new;
85		}
86
87		throw new \InvalidArgumentException('First argument to Stream::create() must be a string, resource or StreamInterface.');
88		}
89
90		/**
91		* Closes the stream when the destructed.
92		*/
93	55	public function __destruct()
94		{
95	55	$this->close();
96	55	}
97
98		/**
99		* @return string
100		*/
101	15	public function __toString()
102		{
103		try {
104	15	if ($this->isSeekable()) {
105	14	$this->seek(0);
106		}
107
108	15	return $this->getContents();
109	1	} catch (\Throwable $e) {
110	1	if (\PHP_VERSION_ID >= 70400) {
111		throw $e;
112		}
113
114	1	if (\is_array($errorHandler = \set_error_handler('var_dump'))) {
115	1	$errorHandler = $errorHandler[0] ?? null;
116		}
117	1	\restore_error_handler();
118
119	1	if ($e instanceof \Error \|\| $errorHandler instanceof SymfonyErrorHandler \|\| $errorHandler instanceof SymfonyLegacyErrorHandler) {
120	1	return \trigger_error((string) $e, \E_USER_ERROR);
121		}
122
123	1	return '';
124		}
125		}
126
127	55	public function close(): void
128		{
129	55	if (isset($this->stream)) {
130	53	if (\is_resource($this->stream)) {
131	53	\fclose($this->stream);
132		}
133	53	$this->detach();
134		}
135	55	}
136
137	55	public function detach()
138		{
139	55	if (!isset($this->stream)) {
140	1	return null;
141		}
142
143	55	$result = $this->stream;
144	55	unset($this->stream);
145	55	$this->size = $this->uri = null;
146	55	$this->readable = $this->writable = $this->seekable = false;
147
148	55	return $result;
149		}
150
151	18	public function getSize(): ?int
152		{
153	18	if (null !== $this->size) {
154	2	return $this->size;
155		}
156
157	18	if (!isset($this->stream)) {
158	2	return null;
159		}
160
161		// Clear the stat cache if the stream has a URI
162	16	if ($this->uri) {
163	16	\clearstatcache(true, $this->uri);
164		}
165
166	16	$stats = \fstat($this->stream);
167	16	if (isset($stats['size'])) {
168	16	$this->size = $stats['size'];
169
170	16	return $this->size;
171		}
172
173		return null;
174		}
175
176	3	public function tell(): int
177		{
178	3	if (false === $result = \ftell($this->stream)) {
179		throw new \RuntimeException('Unable to determine stream position');
180		}
181
182	2	return $result;
183		}
184
185	8	public function eof(): bool
186		{
187	8	return !$this->stream \|\| \feof($this->stream);
188		}
189
190	24	public function isSeekable(): bool
191		{
192	24	return $this->seekable;
193		}
194
195	28	public function seek($offset, $whence = \SEEK_SET): void
196		{
197	28	if (!$this->seekable) {
198	2	throw new \RuntimeException('Stream is not seekable');
199		}
200
201	26	if (-1 === \fseek($this->stream, $offset, $whence)) {
202		throw new \RuntimeException('Unable to seek to stream position ' . $offset . ' with whence ' . \var_export($whence, true));
203		}
204	26	}
205
206	8	public function rewind(): void
207		{
208	8	$this->seek(0);
209	7	}
210
211	5	public function isWritable(): bool
212		{
213	5	return $this->writable;
214		}
215
216	9	public function write($string): int
217		{
218	9	if (!$this->writable) {
219	2	throw new \RuntimeException('Cannot write to a non-writable stream');
220		}
221
222		// We can't know the size after writing anything
223	8	$this->size = null;
224
225	8	if (false === $result = \fwrite($this->stream, $string)) {
226		throw new \RuntimeException('Unable to write to stream');
227		}
228
229	8	return $result;
230		}
231
232	5	public function isReadable(): bool
233		{
234	5	return $this->readable;
235		}
236
237	9	public function read($length): string
238		{
239	9	if (!$this->readable) {
240	2	throw new \RuntimeException('Cannot read from non-readable stream');
241		}
242
243	7	if (false === $result = \fread($this->stream, $length)) {
244		throw new \RuntimeException('Unable to read from stream');
245		}
246
247	7	return $result;
248		}
249
250	17	public function getContents(): string
251		{
252	17	if (!isset($this->stream)) {
253	1	throw new \RuntimeException('Unable to read stream contents');
254		}
255
256	16	if (false === $contents = \stream_get_contents($this->stream)) {
257		throw new \RuntimeException('Unable to read stream contents');
258		}
259
260	16	return $contents;
261		}
262
263	55	public function getMetadata($key = null)
264		{
265	55	if (!isset($this->stream)) {
266	1	return $key ? null : [];
267		}
268
269	55	$meta = \stream_get_meta_data($this->stream);
270
271	55	if (null === $key) {
272	1	return $meta;
273		}
274
275	55	return $meta[$key] ?? null;
276		}
277		}
278

Nyholm / psr7

Stream::write() A last analyzed 2021-01-30 12:55 UTC

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Stream::write() A
last analyzed 2021-01-30 12:55 UTC