Utilities::convertEndianness() - Code Metrics - Inspection of "Preparing codebase to enable it to receive any mes..." - unreal4u/mqtt - Measure and Improve Code Quality continuously with Scrutinizer

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by Camilo

created 2017-12-10 13:43 UTC

Utilities::convertEndianness() A

↳ Parent: Utilities

Complexity

Conditions	2
Paths	2

Size

Total Lines	14
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	14
ccs	7
cts	7
cp	1
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	6
nc	2
nop	1
crap	2

<?php

declare(strict_types=1);

namespace unreal4u\MQTT;

final class Utilities
{
    /**
     * Swaps the given number from endian format (INT16, not to be confused with UINT16)
     *
     * @param int $number
     * @return int
     * @throws \OutOfRangeException
     */
    public static function convertEndianness(int $number): int
    {
        if ($number > 65535) {
            throw new \OutOfRangeException('This is an INT16 conversion, so the maximum is 65535');
        }

        $finalNumber = hexdec(
            // Invert first byte and make it a complete hexadecimal number
            str_pad(dechex($number & 255), 2, '0', STR_PAD_LEFT) .
            // Invert second byte and make a complete hexadecimal number
            str_pad(dechex($number >> 8), 2, '0', STR_PAD_LEFT)
        );

        return (int)$finalNumber;
    }

    /**
     * Converts a number to a binary string that the MQTT protocol understands
     *
     * @param int $number
     * @return string
     * @throws \OutOfRangeException
     */
    public static function convertNumberToBinaryString(int $number): string
    {
        if ($number > 65535) {
            throw new \OutOfRangeException('This is an INT16 conversion, so the maximum is 65535');
        }

        return \chr($number >> 8) . \chr($number & 255);
    }

    /**
     * Converts a binary representation of a number to an actual int
     *
     * @param string $binaryString
     * @return int
     * @throws \OutOfRangeException
     */
    public static function convertBinaryStringToNumber(string $binaryString): int
    {
        return self::convertEndianness((\ord($binaryString{1}) << 8) + (\ord($binaryString{0}) & 255));
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace unreal4u\MQTT;
6
7		final class Utilities
8		{
9		/**
10		* Swaps the given number from endian format (INT16, not to be confused with UINT16)
11		*
12		* @param int $number
13		* @return int
14		* @throws \OutOfRangeException
15		*/
16	21	public static function convertEndianness(int $number): int
17		{
18	21	if ($number > 65535) {
19	1	throw new \OutOfRangeException('This is an INT16 conversion, so the maximum is 65535');
20		}
21
22	20	$finalNumber = hexdec(
23		// Invert first byte and make it a complete hexadecimal number
24	20	str_pad(dechex($number & 255), 2, '0', STR_PAD_LEFT) .
25		// Invert second byte and make a complete hexadecimal number
26	20	str_pad(dechex($number >> 8), 2, '0', STR_PAD_LEFT)
27		);
28
29	20	return (int)$finalNumber;
30		}
31
32		/**
33		* Converts a number to a binary string that the MQTT protocol understands
34		*
35		* @param int $number
36		* @return string
37		* @throws \OutOfRangeException
38		*/
39	20	public static function convertNumberToBinaryString(int $number): string
40		{
41	20	if ($number > 65535) {
42	1	throw new \OutOfRangeException('This is an INT16 conversion, so the maximum is 65535');
43		}
44
45	19	return \chr($number >> 8) . \chr($number & 255);
46		}
47
48		/**
49		* Converts a binary representation of a number to an actual int
50		*
51		* @param string $binaryString
52		* @return int
53		* @throws \OutOfRangeException
54		*/
55	12	public static function convertBinaryStringToNumber(string $binaryString): int
56		{
57	12	return self::convertEndianness((\ord($binaryString{1}) << 8) + (\ord($binaryString{0}) & 255));
58		}
59		}
60

unreal4u / mqtt

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Utilities::convertEndianness() A

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