Ecoji::__construct() - Code Metrics - Inspection of "Scrutinizer" - Rayne/ecoji-php - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — php70 (a6ded4)

by Dennis

created 2018-03-13 21:04 UTC

Ecoji::__construct() A

↳ Parent: Ecoji

Complexity

Conditions	2
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	2

Importance

Changes

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

<?php

/**
 * (c) Dennis Meckel
 *
 * For the full copyright and license information,
 * please view the LICENSE file that was distributed with this source code.
 */

namespace Rayne\Ecoji;

use InvalidArgumentException;
use RuntimeException;

/**
 *
 */
class Ecoji
{
    /**
     * @var EmojiMappingInterface
     */
    private $mapping;

    /**
     * @param EmojiMappingInterface|null $mapping
     */
    public function __construct(EmojiMappingInterface $mapping = null)
    {
        $this->mapping = $mapping ?: new EmojiMapping;
    }

    /**
     * @param string $input
     * @return string
     */
    public function encode(string $input): string
    {
        $textRemaining = $input;
        $output = '';

        while (strlen($textRemaining)) {
            $buffer = [];
            $textCurrent = substr($textRemaining, 0, 5);
            $textRemaining = substr($textRemaining, 5);

            for ($i = 0; $i < 5; $i++) {
                $buffer[$i] = strlen($textCurrent) > $i ? ord($textCurrent[$i]) : 0;
            }

            switch (strlen($textCurrent)) {
                case 1:
                    $output .= $this->mapping->getEmoji($buffer[0] << 2 | $buffer[1] >> 6);
                    $output .= $this->mapping->getPadding();
                    $output .= $this->mapping->getPadding();
                    $output .= $this->mapping->getPadding();
                    break;
                case 2:
                    $output .= $this->mapping->getEmoji($buffer[0] << 2 | $buffer[1] >> 6);
                    $output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 | $buffer[2] >> 4);
                    $output .= $this->mapping->getPadding();
                    $output .= $this->mapping->getPadding();
                    break;
                case 3:
                    $output .= $this->mapping->getEmoji($buffer[0] << 2 | $buffer[1] >> 6);
                    $output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 | $buffer[2] >> 4);
                    $output .= $this->mapping->getEmoji(($buffer[2] & 0x0f) << 6 | $buffer[3] >> 2);
                    $output .= $this->mapping->getPadding();
                    break;
                case 4:
                    $output .= $this->mapping->getEmoji($buffer[0] << 2 | $buffer[1] >> 6);
                    $output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 | $buffer[2] >> 4);
                    $output .= $this->mapping->getEmoji(($buffer[2] & 0x0f) << 6 | $buffer[3] >> 2);

                    // Look at the last two bits to determine the padding.
                    switch ($buffer[3] & 0x03) {
                        case 0:
                            $output .= $this->mapping->getPadding40();
                            break;
                        case 1:
                            $output .= $this->mapping->getPadding41();
                            break;
                        case 2:
                            $output .= $this->mapping->getPadding42();
                            break;
                        case 3:
                            $output .= $this->mapping->getPadding43();
                            break;
                    }
                    break;
                case 5:
                    // use 8 bits from 1st byte and 2 bits from 2nd byte to lookup emoji
                    $output .= $this->mapping->getEmoji($buffer[0] << 2 | $buffer[1] >> 6);

                    // use 6 bits from 2nd byte and 4 bits from 3rd byte to lookup emoji
                    $output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 | $buffer[2] >> 4);

                    // use 4 bits from 3rd byte and 6 bits from 4th byte to lookup emoji
                    $output .= $this->mapping->getEmoji(($buffer[2] & 0x0f) << 6 | $buffer[3] >> 2);

                    //user 2 bits from 4th byte and 8 bits from 5th byte to lookup emoji
                    $output .= $this->mapping->getEmoji(($buffer[3] & 0x03) << 8 | $buffer[4]);
                    break;
            }
        }

        return $output;
    }

    /**
     * @param string $input Ecoji/Encoji encoded information.
     * @return string
     */
    public function decode(string $input): string
    {
        $textRemaining = $input;
        $result = '';

        while (strlen($textRemaining)) {
            if (mb_strlen($textRemaining) < 4) {
                throw new InvalidArgumentException('Unexpected end of data. Expected blocks of four emojis.');
            }

            $runes = [
                mb_substr($textRemaining, 0, 1),
                mb_substr($textRemaining, 1, 1),
                mb_substr($textRemaining, 2, 1),
                mb_substr($textRemaining, 3, 1),
            ];

            $textRemaining = mb_substr($textRemaining, 4);

            $bits1 = $this->mapping->getId($runes[0]);
            $bits2 = $this->mapping->getId($runes[1]);
            $bits3 = $this->mapping->getId($runes[2]);
            $bits4 = null;

            switch ($runes[3]) {
                case $this->mapping->getPadding40():
                    $bits4 = 0;
                    break;
                case $this->mapping->getPadding41():
                    $bits4 = 1 << 8;
                    break;
                case $this->mapping->getPadding42():
                    $bits4 = 2 << 8;
                    break;
                case $this->mapping->getPadding43():
                    $bits4 = 3 << 8;
                    break;
                default:
                    $bits4 = $this->mapping->getId($runes[3]);
            }

            $out = [
                $bits1 >> 2,
                (($bits1 & 0x3) << 6) | ($bits2 >> 4),
                (($bits2 & 0xf) << 4) | ($bits3 >> 6),
                (($bits3 & 0x3f) << 2) | ($bits4 >> 8),
                $bits4 & 0xff,
            ];

            if ($runes[1] == $this->mapping->getPadding()) {
                $out = array_slice($out, 0, 1);
            } elseif ($runes[2] == $this->mapping->getPadding()) {
                $out = array_slice($out, 0, 2);
            } elseif ($runes[3] == $this->mapping->getPadding()) {
                $out = array_slice($out, 0, 3);
            } elseif ($runes[3] == $this->mapping->getPadding40() || $runes[3] == $this->mapping->getPadding41() || $runes[3] == $this->mapping->getPadding42() || $runes[3] == $this->mapping->getPadding43()) {
                $out = array_slice($out, 0, 4);
            }

            foreach ($out as $v) {
                $result .= chr($v);
            }
        }

        return $result;
    }
}


1		<?php
2
3		/**
4		* (c) Dennis Meckel
5		*
6		* For the full copyright and license information,
7		* please view the LICENSE file that was distributed with this source code.
8		*/
9
10		namespace Rayne\Ecoji;
11
12		use InvalidArgumentException;
13		use RuntimeException;
14
15		/**
16		*
17		*/
18		class Ecoji
19		{
20		/**
21		* @var EmojiMappingInterface
22		*/
23		private $mapping;
24
25		/**
26		* @param EmojiMappingInterface\|null $mapping
27		*/
28	1599	public function __construct(EmojiMappingInterface $mapping = null)
29		{
30	1599	$this->mapping = $mapping ?: new EmojiMapping;
31	1599	}
32
33		/**
34		* @param string $input
35		* @return string
36		*/
37	786	public function encode(string $input): string
38		{
39	786	$textRemaining = $input;
40	786	$output = '';
41
42	786	while (strlen($textRemaining)) {
43	786	$buffer = [];
44	786	$textCurrent = substr($textRemaining, 0, 5);
45	786	$textRemaining = substr($textRemaining, 5);
46
47	786	for ($i = 0; $i < 5; $i++) {
48	786	$buffer[$i] = strlen($textCurrent) > $i ? ord($textCurrent[$i]) : 0;
49		}
50
51	786	switch (strlen($textCurrent)) {
52	524	case 1:
53	381	$output .= $this->mapping->getEmoji($buffer[0] << 2 \| $buffer[1] >> 6);
54	381	$output .= $this->mapping->getPadding();
55	381	$output .= $this->mapping->getPadding();
56	381	$output .= $this->mapping->getPadding();
57	381	break;
58	272	case 2:
59	6	$output .= $this->mapping->getEmoji($buffer[0] << 2 \| $buffer[1] >> 6);
60	6	$output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 \| $buffer[2] >> 4);
61	6	$output .= $this->mapping->getPadding();
62	6	$output .= $this->mapping->getPadding();
63	6	break;
64	270	case 3:
65	6	$output .= $this->mapping->getEmoji($buffer[0] << 2 \| $buffer[1] >> 6);
66	6	$output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 \| $buffer[2] >> 4);
67	6	$output .= $this->mapping->getEmoji(($buffer[2] & 0x0f) << 6 \| $buffer[3] >> 2);
68	6	$output .= $this->mapping->getPadding();
69	6	break;
70	268	case 4:
71	393	$output .= $this->mapping->getEmoji($buffer[0] << 2 \| $buffer[1] >> 6);
72	393	$output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 \| $buffer[2] >> 4);
73	393	$output .= $this->mapping->getEmoji(($buffer[2] & 0x0f) << 6 \| $buffer[3] >> 2);
74
75		// Look at the last two bits to determine the padding.
76	393	switch ($buffer[3] & 0x03) {
77	393	case 0:
78	93	$output .= $this->mapping->getPadding40();
79	93	break;
80	300	case 1:
81	105	$output .= $this->mapping->getPadding41();
82	105	break;
83	195	case 2:
84	99	$output .= $this->mapping->getPadding42();
85	99	break;
86	96	case 3:
87	96	$output .= $this->mapping->getPadding43();
88	96	break;
89		}
90	393	break;
91	12	case 5:
92		// use 8 bits from 1st byte and 2 bits from 2nd byte to lookup emoji
93	18	$output .= $this->mapping->getEmoji($buffer[0] << 2 \| $buffer[1] >> 6);
94
95		// use 6 bits from 2nd byte and 4 bits from 3rd byte to lookup emoji
96	18	$output .= $this->mapping->getEmoji(($buffer[1] & 0x3f) << 4 \| $buffer[2] >> 4);
97
98		// use 4 bits from 3rd byte and 6 bits from 4th byte to lookup emoji
99	18	$output .= $this->mapping->getEmoji(($buffer[2] & 0x0f) << 6 \| $buffer[3] >> 2);
100
101		//user 2 bits from 4th byte and 8 bits from 5th byte to lookup emoji
102	18	$output .= $this->mapping->getEmoji(($buffer[3] & 0x03) << 8 \| $buffer[4]);
103	18	break;
104		}
105		}
106
107	786	return $output;
108		}
109
110		/**
111		* @param string $input Ecoji/Encoji encoded information.
112		* @return string
113		*/
114	816	public function decode(string $input): string
115		{
116	816	$textRemaining = $input;
117	816	$result = '';
118
119	816	while (strlen($textRemaining)) {
120	816	if (mb_strlen($textRemaining) < 4) {
121	27	throw new InvalidArgumentException('Unexpected end of data. Expected blocks of four emojis.');
122		}
123
124		$runes = [
125	798	mb_substr($textRemaining, 0, 1),
126	798	mb_substr($textRemaining, 1, 1),
127	798	mb_substr($textRemaining, 2, 1),
128	798	mb_substr($textRemaining, 3, 1),
129		];
130
131	798	$textRemaining = mb_substr($textRemaining, 4);
132
133	798	$bits1 = $this->mapping->getId($runes[0]);
134	795	$bits2 = $this->mapping->getId($runes[1]);
135	795	$bits3 = $this->mapping->getId($runes[2]);
136	795	$bits4 = null;
137
138	795	switch ($runes[3]) {
139	795	case $this->mapping->getPadding40():
140	93	$bits4 = 0;
141	93	break;
142	702	case $this->mapping->getPadding41():
143	105	$bits4 = 1 << 8;
144	105	break;
145	603	case $this->mapping->getPadding42():
146	99	$bits4 = 2 << 8;
147	99	break;
148	507	case $this->mapping->getPadding43():
149	96	$bits4 = 3 << 8;
150	96	break;
151		default:
152	411	$bits4 = $this->mapping->getId($runes[3]);
153		}
154
155		$out = [
156	795	$bits1 >> 2,
157	795	(($bits1 & 0x3) << 6) \| ($bits2 >> 4),
158	795	(($bits2 & 0xf) << 4) \| ($bits3 >> 6),
159	795	(($bits3 & 0x3f) << 2) \| ($bits4 >> 8),
160	795	$bits4 & 0xff,
161		];
162
163	795	if ($runes[1] == $this->mapping->getPadding()) {
164	381	$out = array_slice($out, 0, 1);
165	417	} elseif ($runes[2] == $this->mapping->getPadding()) {
166	6	$out = array_slice($out, 0, 2);
167	414	} elseif ($runes[3] == $this->mapping->getPadding()) {
168	6	$out = array_slice($out, 0, 3);
169	411	} elseif ($runes[3] == $this->mapping->getPadding40() \|\| $runes[3] == $this->mapping->getPadding41() \|\| $runes[3] == $this->mapping->getPadding42() \|\| $runes[3] == $this->mapping->getPadding43()) {
170	393	$out = array_slice($out, 0, 4);
171		}
172
173	795	foreach ($out as $v) {
174	795	$result .= chr($v);
175		}
176		}
177
178	786	return $result;
179		}
180		}
181

Rayne / ecoji-php

Branch — php70 (a6ded4)

Ecoji::__construct() A

Complexity

Size

Duplication

Code Coverage

Importance

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