HeaderHelper::getSortedAcceptTypes() - Code Metrics - Inspection of "Move HeaderHelper from yiisoft/http to yiisoft/yii..." - yiisoft/yii-web - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 27f23d...ae3d19 )

by Alexander

created 2020-09-01 12:26 UTC

HeaderHelper::getSortedAcceptTypes() C

↳ Parent: HeaderHelper

Complexity

Conditions	16
Paths	4

Size

Total Lines	44
Code Lines	28

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	30
CRAP Score	16

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	16
eloc	28
c	2
b	0
f	0
nc	4
nop	1
dl	0
loc	44
ccs	30
cts	30
cp	1
crap	16
rs	5.5666

How to fix Complexity

<?php

namespace Yiisoft\Yii\Web\Helper;

final class HeaderHelper
{
    /**
     * @link https://www.rfc-editor.org/rfc/rfc2616.html#section-2.2
     * token  = 1*<any CHAR except CTLs or separators>
     */
    private const PATTERN_TOKEN = '(?:(?:[^()<>@,;:\\"\/[\\]?={} \t\x7f]|[\x00-\x1f])+)';

    /**
     * @link https://www.rfc-editor.org/rfc/rfc2616.html#section-3.6
     * attribute = token
     */
    private const PATTERN_ATTRIBUTE = self::PATTERN_TOKEN;

    /**
     * @link https://www.rfc-editor.org/rfc/rfc2616.html#section-2.2
     * quoted-string  = ( <"> *(qdtext | quoted-pair ) <"> )
     * qdtext         = <any TEXT except <">>
     * quoted-pair    = "\" CHAR
     */
    private const PATTERN_QUOTED_STRING = '(?:"(?:(?:\\\\.)+|[^\\"]+)*")';

    /**
     * @link https://www.rfc-editor.org/rfc/rfc2616.html#section-3.6
     * value = token | quoted-string
     */
    private const PATTERN_VALUE = '(?:' . self::PATTERN_QUOTED_STRING . '|' . self::PATTERN_TOKEN . ')';

    /**
     * Explode header value to value and parameters (eg. text/html;q=2;version=6)
     *
     * @link https://www.rfc-editor.org/rfc/rfc2616.html#section-3.6
     * transfer-extension      = token *( ";" parameter )
     * @param string $headerValue
     * @return array first element is the value, and key-value are the parameters
     */
    public static function getValueAndParameters(string $headerValue, bool $lowerCaseValue = true, bool $lowerCaseParameter = true, bool $lowerCaseParameterValue = true): array
    {
        $headerValue = trim($headerValue);
        if ($headerValue === '') {
            return [];
        }
        $parts = explode(';', $headerValue, 2);
        $output = [$lowerCaseValue ? strtolower($parts[0]) : $parts[0]];
        if (count($parts) === 1) {
            return $output;
        }
        return $output + self::getParameters($parts[1], $lowerCaseParameter, $lowerCaseParameterValue);
    }

    /**
     * Explode header value to parameters (eg. q=2;version=6)
     *
     * @link https://tools.ietf.org/html/rfc7230#section-3.2.6
     */
    public static function getParameters(string $headerValue, bool $lowerCaseParameter = true, $lowerCaseValue = true): array
    {
        $headerValue = trim($headerValue);
        if ($headerValue === '') {
            return [];
        }
        if (rtrim($headerValue, ';') !== $headerValue) {
            throw new \InvalidArgumentException('Cannot end with a semicolon.');
        }
        $output = [];
        do {
            $headerValue = preg_replace_callback(
                '/^[ \t]*(?<parameter>' . self::PATTERN_ATTRIBUTE . ')[ \t]*=[ \t]*(?<value>' . self::PATTERN_VALUE . ')[ \t]*(?:;|$)/u',
                static function ($matches) use (&$output, $lowerCaseParameter, $lowerCaseValue) {
                    $value = $matches['value'];
                    if (mb_strpos($matches['value'], '"') === 0) {
                        // unescape + remove first and last quote
                        $value = preg_replace('/\\\\(.)/u', '$1', mb_substr($value, 1, -1));
                    }
                    $key = $lowerCaseParameter ? mb_strtolower($matches['parameter']) : $matches['parameter'];
                    if (isset($output[$key])) {
                        // The first is the winner.
                        return;
                    }
                    $output[$key] = $lowerCaseValue ? mb_strtolower($value) : $value;
                },
                $headerValue,
                1,
                $count
            );
            if ($count !== 1) {
                throw new \InvalidArgumentException('Invalid input: ' . $headerValue);
            }
        } while ($headerValue !== '');
        return $output;
    }

    /**
     * Getting header value as q factor sorted list
     * @param string|string[] $values Header value as a comma-separated string or already exploded string array.
     * @see getValueAndParameters
     * @link https://developer.mozilla.org/en-US/docs/Glossary/Quality_values
     * @link https://www.ietf.org/rfc/rfc2045.html#section-2
     */
    public static function getSortedValueAndParameters($values, bool $lowerCaseValue = true, bool $lowerCaseParameter = true, bool $lowerCaseParameterValue = true): array
    {
        if (is_string($values)) {
            $values = preg_split('/\s*,\s*/', trim($values), -1, PREG_SPLIT_NO_EMPTY);
        }
        if (!is_array($values)) {
            throw new \InvalidArgumentException('Values ​​are neither array nor string');
        }
        if (count($values) === 0) {
            return [];
        }
        $output = [];
        foreach ($values as $value) {
            $parse = self::getValueAndParameters($value, $lowerCaseValue, $lowerCaseParameter, $lowerCaseParameterValue);
            // case-insensitive "q" parameter
            $q = $parse['q'] ?? $parse['Q'] ?? 1.0;

            // min 0.000 max 1.000, max 3 digits, without digits allowed
            if (is_string($q) && preg_match('/^(?:0(?:\.\d{1,3})?|1(?:\.0{1,3})?)$/', $q) === 0) {
                throw new \InvalidArgumentException('Invalid q factor');
            }
            $parse['q'] = (float)$q;
            unset($parse['Q']);
            $output[] = $parse;
        }
        usort($output, static function ($a, $b) {
            $a = $a['q'];
            $b = $b['q'];
            if ($a === $b) {
                return 0;
            }
            return $a > $b ? -1 : 1;
        });
        return $output;
    }

    /**
     * @param $values string|string[] $values Header value as a comma-separated string or already exploded string array
     * @return string[] sorted accept types. Note: According to RFC 7231, special parameters (except the q factor) are
     *                  added to the type, which are always appended by a semicolon and sorted by string.
     * @link https://tools.ietf.org/html/rfc7231#section-5.3.2
     * @link https://www.ietf.org/rfc/rfc2045.html#section-2
     */
    public static function getSortedAcceptTypes($values): array
    {
        $output = self::getSortedValueAndParameters($values);
        usort($output, static function ($a, $b) {
            if ($a['q'] !== $b['q']) {
                // The higher q value wins
                return $a['q'] > $b['q'] ? -1 : 1;
            }
            $typeA = reset($a);
            $typeB = reset($b);
            if (strpos($typeA, '*') === false && strpos($typeB, '*') === false) {
                $countA = count($a);
                $countB = count($b);
                if ($countA === $countB) {
                    // They are equivalent for the same parameter number
                    return 0;
                }
                // No wildcard character, higher parameter number wins
                return $countA > $countB ? -1 : 1;
            }
            $endWildcardA = substr($typeA, -1, 1) === '*';
            $endWildcardB = substr($typeB, -1, 1) === '*';
            if (($endWildcardA && !$endWildcardB) || (!$endWildcardA && $endWildcardB)) {
                // The wildcard ends is the loser.
                return $endWildcardA ? 1 : -1;
            }
            // The wildcard starts is the loser.
            return strpos($typeA, '*') === 0 ? 1 : -1;
        });
        foreach ($output as $key => $value) {
            $type = array_shift($value);
            unset($value['q']);
            if (count($value) === 0) {
                $output[$key] = $type;
                continue;
            }
            foreach ($value as $k => $v) {
                $value[$k] = $k . '=' . $v;
            }
            // Parameters are sorted for easier use of parameter variations.
            asort($value, SORT_STRING);
            $output[$key] = $type . ';' . join(';', $value);
        }
        return $output;
    }
}


1		<?php
2
3		namespace Yiisoft\Yii\Web\Helper;
4
5		final class HeaderHelper
6		{
7		/**
8		* @link https://www.rfc-editor.org/rfc/rfc2616.html#section-2.2
9		* token = 1*<any CHAR except CTLs or separators>
10		*/
11		private const PATTERN_TOKEN = '(?:(?:[^()<>@,;:\\"\/[\\]?={} \t\x7f]\|[\x00-\x1f])+)';
12
13		/**
14		* @link https://www.rfc-editor.org/rfc/rfc2616.html#section-3.6
15		* attribute = token
16		*/
17		private const PATTERN_ATTRIBUTE = self::PATTERN_TOKEN;
18
19		/**
20		* @link https://www.rfc-editor.org/rfc/rfc2616.html#section-2.2
21		* quoted-string = ( <"> *(qdtext \| quoted-pair ) <"> )
22		* qdtext = <any TEXT except <">>
23		* quoted-pair = "\" CHAR
24		*/
25		private const PATTERN_QUOTED_STRING = '(?:"(?:(?:\\\\.)+\|[^\\"]+)*")';
26
27		/**
28		* @link https://www.rfc-editor.org/rfc/rfc2616.html#section-3.6
29		* value = token \| quoted-string
30		*/
31		private const PATTERN_VALUE = '(?:' . self::PATTERN_QUOTED_STRING . '\|' . self::PATTERN_TOKEN . ')';
32
33		/**
34		* Explode header value to value and parameters (eg. text/html;q=2;version=6)
35		*
36		* @link https://www.rfc-editor.org/rfc/rfc2616.html#section-3.6
37		* transfer-extension = token *( ";" parameter )
38		* @param string $headerValue
39		* @return array first element is the value, and key-value are the parameters
40		*/
41	34	public static function getValueAndParameters(string $headerValue, bool $lowerCaseValue = true, bool $lowerCaseParameter = true, bool $lowerCaseParameterValue = true): array
42		{
43	34	$headerValue = trim($headerValue);
44	34	if ($headerValue === '') {
45	1	return [];
46		}
47	33	$parts = explode(';', $headerValue, 2);
48	33	$output = [$lowerCaseValue ? strtolower($parts[0]) : $parts[0]];
49	33	if (count($parts) === 1) {
50	16	return $output;
51		}
52	26	return $output + self::getParameters($parts[1], $lowerCaseParameter, $lowerCaseParameterValue);
53		}
54
55		/**
56		* Explode header value to parameters (eg. q=2;version=6)
57		*
58		* @link https://tools.ietf.org/html/rfc7230#section-3.2.6
59		*/
60	65	public static function getParameters(string $headerValue, bool $lowerCaseParameter = true, $lowerCaseValue = true): array
61		{
62	65	$headerValue = trim($headerValue);
63	65	if ($headerValue === '') {
64		return [];
65		}
66	65	if (rtrim($headerValue, ';') !== $headerValue) {
67	1	throw new \InvalidArgumentException('Cannot end with a semicolon.');
68		}
69	64	$output = [];
70		do {
71	64	$headerValue = preg_replace_callback(
72	64	'/^[ \t](?<parameter>' . self::PATTERN_ATTRIBUTE . ')[ \t]=[ \t](?<value>' . self::PATTERN_VALUE . ')[ \t](?:;\|$)/u',
73	64	static function ($matches) use (&$output, $lowerCaseParameter, $lowerCaseValue) {
74	55	$value = $matches['value'];
75	55	if (mb_strpos($matches['value'], '"') === 0) {
76		// unescape + remove first and last quote
77	14	$value = preg_replace('/\\\\(.)/u', '$1', mb_substr($value, 1, -1));
78		}
79	55	$key = $lowerCaseParameter ? mb_strtolower($matches['parameter']) : $matches['parameter'];
80	55	if (isset($output[$key])) {
81		// The first is the winner.
82	2	return;
83		}
84	55	$output[$key] = $lowerCaseValue ? mb_strtolower($value) : $value;
85	64	},
86		$headerValue,
87	64	1,
88		$count
89		);
90	64	if ($count !== 1) {
91	11	throw new \InvalidArgumentException('Invalid input: ' . $headerValue);
92		}
93	55	} while ($headerValue !== '');
94	53	return $output;
95		}
96
97		/**
98		* Getting header value as q factor sorted list
99		* @param string\|string[] $values Header value as a comma-separated string or already exploded string array.
100		* @see getValueAndParameters
101		* @link https://developer.mozilla.org/en-US/docs/Glossary/Quality_values
102		* @link https://www.ietf.org/rfc/rfc2045.html#section-2
103		*/
104	31	public static function getSortedValueAndParameters($values, bool $lowerCaseValue = true, bool $lowerCaseParameter = true, bool $lowerCaseParameterValue = true): array
105		{
106	31	if (is_string($values)) {
107	22	$values = preg_split('/\s,\s/', trim($values), -1, PREG_SPLIT_NO_EMPTY);
108		}
109	31	if (!is_array($values)) {
110	2	throw new \InvalidArgumentException('Values are neither array nor string');
111		}
112	29	if (count($values) === 0) {
113	4	return [];
114		}
115	25	$output = [];
116	25	foreach ($values as $value) {
117	25	$parse = self::getValueAndParameters($value, $lowerCaseValue, $lowerCaseParameter, $lowerCaseParameterValue);
118		// case-insensitive "q" parameter
119	25	$q = $parse['q'] ?? $parse['Q'] ?? 1.0;
120
121		// min 0.000 max 1.000, max 3 digits, without digits allowed
122	25	if (is_string($q) && preg_match('/^(?:0(?:\.\d{1,3})?\|1(?:\.0{1,3})?)$/', $q) === 0) {
123	4	throw new \InvalidArgumentException('Invalid q factor');
124		}
125	21	$parse['q'] = (float)$q;
126	21	unset($parse['Q']);
127	21	$output[] = $parse;
128		}
129	21	usort($output, static function ($a, $b) {
130	17	$a = $a['q'];
131	17	$b = $b['q'];
132	17	if ($a === $b) {
133	9	return 0;
134		}
135	8	return $a > $b ? -1 : 1;
136	21	});
137	21	return $output;
138		}
139
140		/**
141		* @param $values string\|string[] $values Header value as a comma-separated string or already exploded string array
142		* @return string[] sorted accept types. Note: According to RFC 7231, special parameters (except the q factor) are
143		* added to the type, which are always appended by a semicolon and sorted by string.
144		* @link https://tools.ietf.org/html/rfc7231#section-5.3.2
145		* @link https://www.ietf.org/rfc/rfc2045.html#section-2
146		*/
147	18	public static function getSortedAcceptTypes($values): array
148		{
149	18	$output = self::getSortedValueAndParameters($values);
150	18	usort($output, static function ($a, $b) {
151	12	if ($a['q'] !== $b['q']) {
152		// The higher q value wins
153	4	return $a['q'] > $b['q'] ? -1 : 1;
154		}
155	8	$typeA = reset($a);
156	8	$typeB = reset($b);
157	8	if (strpos($typeA, '') === false && strpos($typeB, '') === false) {
158	8	$countA = count($a);
159	8	$countB = count($b);
160	8	if ($countA === $countB) {
161		// They are equivalent for the same parameter number
162	5	return 0;
163		}
164		// No wildcard character, higher parameter number wins
165	3	return $countA > $countB ? -1 : 1;
166		}
167	1	$endWildcardA = substr($typeA, -1, 1) === '*';
168	1	$endWildcardB = substr($typeB, -1, 1) === '*';
169	1	if (($endWildcardA && !$endWildcardB) \|\| (!$endWildcardA && $endWildcardB)) {
170		// The wildcard ends is the loser.
171	1	return $endWildcardA ? 1 : -1;
172		}
173		// The wildcard starts is the loser.
174	1	return strpos($typeA, '*') === 0 ? 1 : -1;
175	18	});
176	18	foreach ($output as $key => $value) {
177	16	$type = array_shift($value);
178	16	unset($value['q']);
179	16	if (count($value) === 0) {
180	15	$output[$key] = $type;
181	15	continue;
182		}
183	5	foreach ($value as $k => $v) {
184	5	$value[$k] = $k . '=' . $v;
185		}
186		// Parameters are sorted for easier use of parameter variations.
187	5	asort($value, SORT_STRING);
188	5	$output[$key] = $type . ';' . join(';', $value);
189		}
190	18	return $output;
191		}
192		}
193

yiisoft / yii-web

Push — master ( 27f23d...ae3d19 )

HeaderHelper::getSortedAcceptTypes() C

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