GravityMedia\Stream\Reader\SignedShortReader

Complexity

Total Complexity

12

Size/Duplication

Total Lines	105
Duplicated Lines	12.38 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

0%

Importance

Changes	1
Bugs	0	Features	1

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	13	13	3
A	getStream()	0	4	1
A	getEndian()	0	4	1
A	getEndianess()	0	13	3
A	read()	0	17	4

<?php
/**
 * This file is part of the stream package
 *
 * @author Daniel Schröder <daniel.schroeder@gravitymedia.de>
 */

namespace GravityMedia\Stream\Reader;

use GravityMedia\Stream\Enum\Endian;
use GravityMedia\Stream\Exception;
use GravityMedia\Stream\StreamInterface;

/**
 * Signed short (16-bit integer) reader
 *
 * @package GravityMedia\Stream\Reader
 */
class SignedShortReader
{
    /**
     * @var int
     */
    protected static $endianess;

    /**
     * @var StreamInterface
     */
    protected $stream;

    /**
     * @var int
     */
    protected $endian;

    /**
     * Create signed short (16-bit integer) reader object
     *
     * @throws Exception\InvalidArgumentException   An exception will be thrown for non-readable streams or an invalid
     *                                              endian value
     *
     * @param StreamInterface $stream
     * @param int $endian
     */
    public function __construct(StreamInterface $stream, $endian)

This method seems to be duplicated in your project.

    {
        if (!$stream->isReadable()) {
            throw new Exception\InvalidArgumentException('Stream not readable');
        }

        if (!in_array($endian, [Endian::ENDIAN_BIG, Endian::ENDIAN_LITTLE])) {
            throw new Exception\InvalidArgumentException('Invalid endian');
        }

        $this->stream = $stream;
        $this->endian = $endian;
    }

    /**
     * Get stream
     *
     * @return StreamInterface
     */
    public function getStream()
    {
        return $this->stream;
    }

    /**
     * Get endian
     *
     * @return int
     */
    public function getEndian()
    {
        return $this->endian;
    }

    /**
     * Get endianess
     *
     * @return int
     */
    protected function getEndianess()
    {
        if (null === static::$endianess) {
            $data = unpack('l*', "\x01\x00\x00\x00");

            static::$endianess = Endian::ENDIAN_BIG;
            if (1 === $data[1]) {
                static::$endianess = Endian::ENDIAN_LITTLE;
            }
        }

        return static::$endianess;
    }

    /**
     * Read string data from the stream
     *
     * @throws Exception\IOException    An exception will be thrown for invalid stream resources or when the data could
     *                                  not be read
     *
     * @return int
     */
    public function read()
    {
        $data = unpack('s', $this->stream->read(2));

        if (Endian::ENDIAN_BIG === $this->getEndianess() && Endian::ENDIAN_LITTLE === $this->endian) {
            $hex = dechex($data[1]);

            if (strlen($hex) <= 2) {
                return $data[1];
            }

            $data = unpack('H*', strrev(pack('H*', $hex)));
            return hexdec($data[1]);
        }

        return $data[1];
    }
}