Base64Stream::tell() - Code Metrics - Inspection of "Refactor Base64Stream" - zbateson/stream-decorators - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 8c77bf...be291e )

by Zaahid

created 2018-07-16 01:24 UTC

Base64Stream::tell() A

↳ Parent: Base64Stream

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	0
dl	0
loc	3
ccs	2
cts	2
cp	1
crap	1
rs	10
c	0
b	0
f	0

<?php
/**
 * This file is part of the ZBateson\StreamDecorators project.
 *
 * @license http://opensource.org/licenses/bsd-license.php BSD
 */
namespace ZBateson\StreamDecorators;

use Psr\Http\Message\StreamInterface;
use GuzzleHttp\Psr7\StreamDecoratorTrait;
use GuzzleHttp\Psr7\BufferStream;
use RuntimeException;

/**
 * GuzzleHttp\Psr7 stream decoder extension for base64 streams.
 *
 * @author Zaahid Bateson
 */
class Base64Stream implements StreamInterface
{
    use StreamDecoratorTrait;

    /**
     * @var BufferStream buffered bytes
     */
    private $buffer;

    /**
     * @var string remainder of write operation if the bytes didn't align to 3
     *      bytes
     */
    private $remainder = '';

    /**
     * @var int current number of read/written bytes (for tell())
     */
    private $position = 0;

    /**
     * @param StreamInterface $stream
     */
    public function __construct(StreamInterface $stream)
    {
        $this->stream = $stream;
        $this->buffer = new BufferStream();
    }

    /**
     * Returns the current position of the file read/write pointer
     *
     * @return int
     */
    public function tell()
    {
        return $this->position;
    }

    /**
     * Returns null, getSize isn't supported
     *
     * @return null
     */
    public function getSize()
    {
        return null;
    }

    /**
     * Not implemented (yet).
     *
     * Seek position can be calculated.
     *
     * @param int $offset
     * @param int $whence
     * @throws RuntimeException
     */
    public function seek($offset, $whence = SEEK_SET)
    {
        throw new RuntimeException('Cannot seek a Base64Stream');
    }

    /**
     * Overridden to return false
     *
     * @return boolean
     */
    public function isSeekable()
    {
        return false;
    }

    /**
     * Returns true if the end of stream has been reached.
     *
     * @return type
filter:
    dependency_paths: ["lib/*"]
     */
    public function eof()
    {
        return ($this->buffer->eof() && $this->stream->eof());

    }

    /**
     * Fills the internal byte buffer after reading and decoding data from the
     * underlying stream.
     *
     * @param int $length
     */
    private function fillBuffer($length)
    {
        $fill = 8192;
        while ($this->buffer->getSize() < $length) {
            $read = base64_decode($this->stream->read($fill));
            if ($read === false || $read === '') {
                break;
            }
            $this->buffer->write($read);
        }
    }

    /**
     * Attempts to read $length bytes after decoding them, and returns them.
     *
     * Note that reading and writing to the same stream may result in wrongly
     * encoded data and is not supported.
     *
     * @param int $length
     * @return string
     */
    public function read($length)
    {
        // let Guzzle decide what to do.
        if ($length <= 0 || $this->eof()) {
            return $this->stream->read($length);
        }
        $this->fillBuffer($length);
        $ret = $this->buffer->read($length);
        $this->position += strlen($ret);
        return $ret;
    }

    /**
     * Writes the passed string to the underlying stream after encoding it to
     * base64.
     *
     * Base64Stream::close or detach must be called.  Failing to do so may
     * result in 1-2 bytes missing from the end of the stream if there's a
     * remainder.  Note that the default Stream destructor calls close as well.
     *
     * Note that reading and writing to the same stream may result in wrongly
     * encoded data and is not supported.
     *
     * @param string $string
     * @return int the number of bytes written
     */
    public function write($string)
    {
        $bytes = $this->remainder . $string;
        $len = strlen($bytes);
        if (($len % 3) !== 0) {
            $this->remainder = substr($bytes, -($len % 3));
            $bytes = substr($bytes, 0, $len - ($len % 3));
        } else {
            $this->remainder = '';
        }
        $this->stream->write(base64_encode($bytes));
        $written = strlen($string);
        $this->position += $len;
        return $written;
    }

    /**
     * Writes out any remaining bytes at the end of the stream and closes.
     */
    private function beforeClose()
    {
        if ($this->isWritable() && $this->remainder !== '') {
            $this->stream->write(base64_encode($this->remainder));
            $this->remainder = '';
        }
    }

    /**
     * Closes the underlying stream after writing out any remaining bytes
     * needing to be encoded.
     */
    public function close()
    {
        $this->beforeClose();
        $this->stream->close();
    }

    /**
     * Detaches the underlying stream after writing out any remaining bytes
     * needing to be encoded.
     */
    public function detach()
    {
        $this->beforeClose();
        $this->stream->detach();
    }
}


1		<?php
2		/**
3		* This file is part of the ZBateson\StreamDecorators project.
4		*
5		* @license http://opensource.org/licenses/bsd-license.php BSD
6		*/
7		namespace ZBateson\StreamDecorators;
8
9		use Psr\Http\Message\StreamInterface;
10		use GuzzleHttp\Psr7\StreamDecoratorTrait;
11		use GuzzleHttp\Psr7\BufferStream;
12		use RuntimeException;
13
14		/**
15		* GuzzleHttp\Psr7 stream decoder extension for base64 streams.
16		*
17		* @author Zaahid Bateson
18		*/
19		class Base64Stream implements StreamInterface
20		{
21		use StreamDecoratorTrait;
22
23		/**
24		* @var BufferStream buffered bytes
25		*/
26		private $buffer;
27
28		/**
29		* @var string remainder of write operation if the bytes didn't align to 3
30		* bytes
31		*/
32		private $remainder = '';
33
34		/**
35		* @var int current number of read/written bytes (for tell())
36		*/
37		private $position = 0;
38
39		/**
40		* @param StreamInterface $stream
41		*/
42	8	public function __construct(StreamInterface $stream)
43		{
44	8	$this->stream = $stream;
45	8	$this->buffer = new BufferStream();
46	8	}
47
48		/**
49		* Returns the current position of the file read/write pointer
50		*
51		* @return int
52		*/
53	1	public function tell()
54		{
55	1	return $this->position;
56		}
57
58		/**
59		* Returns null, getSize isn't supported
60		*
61		* @return null
62		*/
63	2	public function getSize()
64		{
65	2	return null;
66		}
67
68		/**
69		* Not implemented (yet).
70		*
71		* Seek position can be calculated.
72		*
73		* @param int $offset
74		* @param int $whence
75		* @throws RuntimeException
76		*/
77	1	public function seek($offset, $whence = SEEK_SET)
78		{
79	1	throw new RuntimeException('Cannot seek a Base64Stream');
80		}
81
82		/**
83		* Overridden to return false
84		*
85		* @return boolean
86		*/
87	1	public function isSeekable()
88		{
89	1	return false;
90		}
91
92		/**
93		* Returns true if the end of stream has been reached.
94		*
95		* @return type
		0 ignored issues – show Bug introduced 2018-02-19 06:03 UTC by Report Bug Copy Issue Report The type `ZBateson\StreamDecorators\type` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
96		*/
97	6	public function eof()
98		{
99	6	return ($this->buffer->eof() && $this->stream->eof());
		0 ignored issues – show Bug Best Practice introduced 2018-07-16 01:29 UTC by Report Bug Copy Issue Report The expression `return $this->buffer->eo...&& $this->stream->eof()` returns the type `boolean` which is incompatible with the documented return type `ZBateson\StreamDecorators\type`. Loading history...
100		}
101
102		/**
103		* Fills the internal byte buffer after reading and decoding data from the
104		* underlying stream.
105		*
106		* @param int $length
107		*/
108	6	private function fillBuffer($length)
109		{
110	6	$fill = 8192;
111	6	while ($this->buffer->getSize() < $length) {
112	6	$read = base64_decode($this->stream->read($fill));
113	6	if ($read === false \|\| $read === '') {
114	6	break;
115		}
116	6	$this->buffer->write($read);
117		}
118	6	}
119
120		/**
121		* Attempts to read $length bytes after decoding them, and returns them.
122		*
123		* Note that reading and writing to the same stream may result in wrongly
124		* encoded data and is not supported.
125		*
126		* @param int $length
127		* @return string
128		*/
129	6	public function read($length)
130		{
131		// let Guzzle decide what to do.
132	6	if ($length <= 0 \|\| $this->eof()) {
133	1	return $this->stream->read($length);
134		}
135	6	$this->fillBuffer($length);
136	6	$ret = $this->buffer->read($length);
137	6	$this->position += strlen($ret);
138	6	return $ret;
139		}
140
141		/**
142		* Writes the passed string to the underlying stream after encoding it to
143		* base64.
144		*
145		* Base64Stream::close or detach must be called. Failing to do so may
146		* result in 1-2 bytes missing from the end of the stream if there's a
147		* remainder. Note that the default Stream destructor calls close as well.
148		*
149		* Note that reading and writing to the same stream may result in wrongly
150		* encoded data and is not supported.
151		*
152		* @param string $string
153		* @return int the number of bytes written
154		*/
155	2	public function write($string)
156		{
157	2	$bytes = $this->remainder . $string;
158	2	$len = strlen($bytes);
159	2	if (($len % 3) !== 0) {
160	2	$this->remainder = substr($bytes, -($len % 3));
161	2	$bytes = substr($bytes, 0, $len - ($len % 3));
162		} else {
163	2	$this->remainder = '';
164		}
165	2	$this->stream->write(base64_encode($bytes));
166	2	$written = strlen($string);
167	2	$this->position += $len;
168	2	return $written;
169		}
170
171		/**
172		* Writes out any remaining bytes at the end of the stream and closes.
173		*/
174	2	private function beforeClose()
175		{
176	2	if ($this->isWritable() && $this->remainder !== '') {
177	2	$this->stream->write(base64_encode($this->remainder));
178	2	$this->remainder = '';
179		}
180	2	}
181
182		/**
183		* Closes the underlying stream after writing out any remaining bytes
184		* needing to be encoded.
185		*/
186	1	public function close()
187		{
188	1	$this->beforeClose();
189	1	$this->stream->close();
190	1	}
191
192		/**
193		* Detaches the underlying stream after writing out any remaining bytes
194		* needing to be encoded.
195		*/
196	1	public function detach()
197		{
198	1	$this->beforeClose();
199	1	$this->stream->detach();
200	1	}
201		}
202

zbateson / stream-decorators

Push — master ( 8c77bf...be291e )

Base64Stream::tell() A

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