HeaderReader::readFlags() - Code Metrics - Inspection of "Separate ID3 readers and writers" - GravityMedia/Metadata - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — id3-metadata-objects ( e55453...161f4c )

by Daniel

created 2016-03-28 15:39 UTC

HeaderReader::readFlags() B

↳ Parent: HeaderReader

Complexity

Conditions	3
Paths	3

Size

Total Lines	27
Code Lines	17

Duplication

Lines	13
Ratio	48.15 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	13
loc	27
rs	8.8571
cc	3
eloc	17
nc	3
nop	1

<?php
/**
 * This file is part of the Metadata package.
 *
 * @author Daniel Schröder <[email protected]>
 */

namespace GravityMedia\Metadata\ID3v2\Reader;

use GravityMedia\Metadata\Exception\RuntimeException;
use GravityMedia\Metadata\ID3v2\Enum\HeaderFlag;
use GravityMedia\Metadata\ID3v2\Enum\Version;
use GravityMedia\Metadata\ID3v2\Header;
use GravityMedia\Metadata\ID3v2\Stream\SynchsafeInteger32Reader;
use GravityMedia\Metadata\Metadata\HeaderInterface;
use GravityMedia\Stream\Enum\ByteOrder;
use GravityMedia\Stream\Reader\Integer8Reader;
use GravityMedia\Stream\StreamInterface;

/**
 * ID3v2 header reader
 *
 * @package GravityMedia\Metadata\ID3v2\Reader
 */
class HeaderReader
{
    /**
     * @var StreamInterface
     */
    protected $stream;

    /**
     * @var Integer8Reader
     */
    protected $integer8Reader;

    /**
     * @var SynchsafeInteger32Reader
     */
    protected $synchsafeInteger32Reader;

    /**
     * Create ID3v2 header reader.
     *
     * @param StreamInterface $stream
     */
    public function __construct(StreamInterface $stream)
    {
        $this->stream = $stream;
    }

    /**
     * Get 8-bit integer reader.
     *
     * @return Integer8Reader
     */
    public function getInteger8Reader()
    {
        if (null === $this->integer8Reader) {
            $this->integer8Reader = new Integer8Reader($this->stream);
        }

        return $this->integer8Reader;
    }

    /**
     * Get synchsafe 32-bit integer reader
     *
     * @return SynchsafeInteger32Reader
     */
    public function getSynchsafeInteger32Reader()

    {
        if (null === $this->synchsafeInteger32Reader) {
            $this->synchsafeInteger32Reader = new SynchsafeInteger32Reader($this->stream);
            $this->synchsafeInteger32Reader->setByteOrder(ByteOrder::BIG_ENDIAN);
        }

        return $this->synchsafeInteger32Reader;
    }

    /**
     * Read ID3v2 header version.
     *
     * @throws RuntimeException An exception is thrown on invalid versions.
     *
     * @return int
     */
    protected function readVersion()
    {
        $this->stream->seek(3);
        switch ($this->getInteger8Reader()->read()) {
            case 2:
                return Version::VERSION_22;
            case 3:
                return Version::VERSION_23;
            case 4:
                return Version::VERSION_24;
        }

        throw new RuntimeException('Invalid version.');
    }

    /**
     * Read ID3v2 header revision.
     *
     * @return int
     */
    protected function readRevision()
    {
        $this->stream->seek(4);

        return $this->getInteger8Reader()->read();
    }

    /**
     * Read ID3v2 header flags.
     *
     * @param int $version
     *
     * @return array
     */
    protected function readFlags($version)
    {
        $this->stream->seek(5);
        $flags = $this->getInteger8Reader()->read();

        if ($version === Version::VERSION_22) {

            return [
                HeaderFlag::FLAG_UNSYNCHRONISATION => (bool)($flags & 0x80),
                HeaderFlag::FLAG_COMPRESSION => (bool)($flags & 0x40)
            ];
        }

        if ($version === Version::VERSION_23) {

            return [
                HeaderFlag::FLAG_UNSYNCHRONISATION => (bool)($flags & 0x80),
                HeaderFlag::FLAG_EXTENDED_HEADER => (bool)($flags & 0x40),
                HeaderFlag::FLAG_EXPERIMENTAL_INDICATOR => (bool)($flags & 0x20)
            ];
        }

        return [
            HeaderFlag::FLAG_UNSYNCHRONISATION => (bool)($flags & 0x80),
            HeaderFlag::FLAG_EXTENDED_HEADER => (bool)($flags & 0x40),
            HeaderFlag::FLAG_EXPERIMENTAL_INDICATOR => (bool)($flags & 0x20),
            HeaderFlag::FLAG_FOOTER_PRESENT => (bool)($flags & 0x10)
        ];
    }

    /**
     * Read ID3v2 header size.
     *
     * @return int
     */
    public function readSize()
    {
        $this->stream->seek(6);

        return $this->getSynchsafeInteger32Reader()->read();
    }

    /**
     * Read ID3v2 header.
     *
     * @return HeaderInterface
     */
    public function read()
    {
        $version = $this->readVersion();

        $header = new Header($version);
        return $header
            ->setRevision($this->readRevision())
            ->setFlags($this->readFlags($version))
            ->setSize($this->readSize());
    }
}


1		<?php
2		/**
3		* This file is part of the Metadata package.
4		*
5		* @author Daniel Schröder <[email protected]>
6		*/
7
8		namespace GravityMedia\Metadata\ID3v2\Reader;
9
10		use GravityMedia\Metadata\Exception\RuntimeException;
11		use GravityMedia\Metadata\ID3v2\Enum\HeaderFlag;
12		use GravityMedia\Metadata\ID3v2\Enum\Version;
13		use GravityMedia\Metadata\ID3v2\Header;
14		use GravityMedia\Metadata\ID3v2\Stream\SynchsafeInteger32Reader;
15		use GravityMedia\Metadata\Metadata\HeaderInterface;
16		use GravityMedia\Stream\Enum\ByteOrder;
17		use GravityMedia\Stream\Reader\Integer8Reader;
18		use GravityMedia\Stream\StreamInterface;
19
20		/**
21		* ID3v2 header reader
22		*
23		* @package GravityMedia\Metadata\ID3v2\Reader
24		*/
25		class HeaderReader
26		{
27		/**
28		* @var StreamInterface
29		*/
30		protected $stream;
31
32		/**
33		* @var Integer8Reader
34		*/
35		protected $integer8Reader;
36
37		/**
38		* @var SynchsafeInteger32Reader
39		*/
40		protected $synchsafeInteger32Reader;
41
42		/**
43		* Create ID3v2 header reader.
44		*
45		* @param StreamInterface $stream
46		*/
47		public function __construct(StreamInterface $stream)
48		{
49		$this->stream = $stream;
50		}
51
52		/**
53		* Get 8-bit integer reader.
54		*
55		* @return Integer8Reader
56		*/
57		public function getInteger8Reader()
58		{
59		if (null === $this->integer8Reader) {
60		$this->integer8Reader = new Integer8Reader($this->stream);
61		}
62
63		return $this->integer8Reader;
64		}
65
66		/**
67		* Get synchsafe 32-bit integer reader
68		*
69		* @return SynchsafeInteger32Reader
70		*/
71	View Code Duplication	public function getSynchsafeInteger32Reader()
		0 ignored issues – show Duplication introduced 2016-03-28 15:50 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
72		{
73		if (null === $this->synchsafeInteger32Reader) {
74		$this->synchsafeInteger32Reader = new SynchsafeInteger32Reader($this->stream);
75		$this->synchsafeInteger32Reader->setByteOrder(ByteOrder::BIG_ENDIAN);
76		}
77
78		return $this->synchsafeInteger32Reader;
79		}
80
81		/**
82		* Read ID3v2 header version.
83		*
84		* @throws RuntimeException An exception is thrown on invalid versions.
85		*
86		* @return int
87		*/
88		protected function readVersion()
89		{
90		$this->stream->seek(3);
91		switch ($this->getInteger8Reader()->read()) {
92		case 2:
93		return Version::VERSION_22;
94		case 3:
95		return Version::VERSION_23;
96		case 4:
97		return Version::VERSION_24;
98		}
99
100		throw new RuntimeException('Invalid version.');
101		}
102
103		/**
104		* Read ID3v2 header revision.
105		*
106		* @return int
107		*/
108		protected function readRevision()
109		{
110		$this->stream->seek(4);
111
112		return $this->getInteger8Reader()->read();
113		}
114
115		/**
116		* Read ID3v2 header flags.
117		*
118		* @param int $version
119		*
120		* @return array
121		*/
122		protected function readFlags($version)
123		{
124		$this->stream->seek(5);
125		$flags = $this->getInteger8Reader()->read();
126
127	View Code Duplication	if ($version === Version::VERSION_22) {
		0 ignored issues – show Duplication introduced 2016-03-28 15:50 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
128		return [
129		HeaderFlag::FLAG_UNSYNCHRONISATION => (bool)($flags & 0x80),
130		HeaderFlag::FLAG_COMPRESSION => (bool)($flags & 0x40)
131		];
132		}
133
134	View Code Duplication	if ($version === Version::VERSION_23) {
		0 ignored issues – show Duplication introduced 2016-03-28 15:50 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
135		return [
136		HeaderFlag::FLAG_UNSYNCHRONISATION => (bool)($flags & 0x80),
137		HeaderFlag::FLAG_EXTENDED_HEADER => (bool)($flags & 0x40),
138		HeaderFlag::FLAG_EXPERIMENTAL_INDICATOR => (bool)($flags & 0x20)
139		];
140		}
141
142		return [
143		HeaderFlag::FLAG_UNSYNCHRONISATION => (bool)($flags & 0x80),
144		HeaderFlag::FLAG_EXTENDED_HEADER => (bool)($flags & 0x40),
145		HeaderFlag::FLAG_EXPERIMENTAL_INDICATOR => (bool)($flags & 0x20),
146		HeaderFlag::FLAG_FOOTER_PRESENT => (bool)($flags & 0x10)
147		];
148		}
149
150		/**
151		* Read ID3v2 header size.
152		*
153		* @return int
154		*/
155		public function readSize()
156		{
157		$this->stream->seek(6);
158
159		return $this->getSynchsafeInteger32Reader()->read();
160		}
161
162		/**
163		* Read ID3v2 header.
164		*
165		* @return HeaderInterface
166		*/
167		public function read()
168		{
169		$version = $this->readVersion();
170
171		$header = new Header($version);
172		return $header
173		->setRevision($this->readRevision())
174		->setFlags($this->readFlags($version))
175		->setSize($this->readSize());
176		}
177		}
178

GravityMedia / Metadata

Push — id3-metadata-objects ( e55453...161f4c )

HeaderReader::readFlags() B

Complexity

Size

Duplication

Importance

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