WhereFilter::compareNullValues() - Code Metrics - Inspection of "Split up the PageManager class" - stakx-io/stakx - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#41)

by Vladimir

created 2017-03-24 07:26 UTC

WhereFilter::compareNullValues() D

↳ Parent: WhereFilter

Complexity

Conditions	10
Paths	6

Size

Total Lines	26
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	17
CRAP Score	10

Importance

Changes

Metric	Value
cc	10
eloc	11
nc	6
nop	4
dl	0
loc	26
ccs	17
cts	17
cp	1
crap	10
rs	4.8196
c	0
b	0
f	0

How to fix Complexity

<?php

/**
 * @copyright 2017 Vladimir Jimenez
 * @license   https://github.com/allejo/stakx/blob/master/LICENSE.md MIT
 */

namespace allejo\stakx\Twig;

use allejo\stakx\Object\FrontMatterObject;
use allejo\stakx\Object\JailObject;
use Twig_Error_Syntax;

/**
 * Where Twig Filter.
 *
 * This Twig filter introduces the `where` filter
 *
 * Usage:
 *   <array> | where(<key>, <comparison>, <value>)
 *
 * Available comparisons:
 *   - ==  Ensure the values are equal and are the same data type
 *   - !=  Ensure the values are not equal; returns false if the values are the same but different data types
 *   - >   Greater than
 *   - >=  Greater than or equal to
 *   - <   Less than
 *   - <=  Less than or equal to
 *   - ~=  Check if a string or array contains the <value>; case-sensitive
 *   - _=  Check if a string or array contains the <value>; case-insensitive
 *   - /=  Compare the <value> with a regular expression
 */
class WhereFilter
{
    /**
     * @param array|\ArrayAccess[] $array      The elements to filter through
     * @param string               $key        The key value in an associative array or FrontMatter
     * @param string               $comparison The actual comparison symbols being used
     * @param mixed                $value      The value we're searching for
     *
     * @return array
     */
    public function __invoke($array, $key, $comparison, $value)
    {
        $results = array();
        $this->search_r($array, $key, $comparison, $value, $results);

        return $results;
    }

    /**
     * @return \Twig_SimpleFilter
     */
    public static function get()
    {
        return new \Twig_SimpleFilter('where', new self());
    }

    /**
     * Recursive searching calling our comparison.
     *
     * @param array|\ArrayAccess[] $array      The elements to filter through
     * @param string               $key        The key value in an associative array or FrontMatter
     * @param string               $comparison The actual comparison symbols being used
     * @param string               $value      The value we're searching for
     * @param array                $results    The reference to where to keep the filtered elements
     */
    private function search_r($array, $key, $comparison, $value, &$results)

    {
        if (!is_array($array) && !($array instanceof \ArrayAccess))
        {
            return;
        }

        if ($this->compare($array, $key, $comparison, $value))
        {
            $results[] = $array;
        }

        foreach ($array as $subarray)
        {
            $this->search_r($subarray, $key, $comparison, $value, $results);
        }
    }

    /**
     * The logic for determining if an element matches the filter.
     *
     * @param array|\ArrayAccess[] $array      The elements to filter through
     * @param string               $key        The key value in an associative array or FrontMatter
     * @param string               $comparison The actual comparison symbols being used
     * @param mixed                $value      The value we're searching for
     *
     * @throws Twig_Error_Syntax
     *
     * @return bool
     */
    private function compare($array, $key, $comparison, $value)
    {
        if ($this->compareNullValues($array, $key, $comparison, $value))
        {
            return true;
        }

        if (!isset($array[$key]))
        {
            return false;
        }

        return $this->comparisonSymbol($array[$key], $comparison, $value);
    }

    /**
     * If the comparison is == or !=, then special behavior is defined for null values.
     *
     * @param array|\ArrayAccess[] $array      The elements to filter through
     * @param string               $key        The key value in an associative array or FrontMatter
     * @param string               $comparison The actual comparison symbols being used
     * @param mixed                $value      The value we're searching for
     *
     * @return bool
     */
    private function compareNullValues($array, $key, $comparison, $value)
    {
        if ($comparison != '==' && $comparison != '!=')
        {
            return false;
        }

        if (!($array instanceof JailObject))
        {
            return false;
        }

        if ($array->coreInstanceOf(FrontMatterObject::class) && !isset($array[$key]))
        {
            if ($comparison == '==' && is_null($value))
            {
                return true;
            }
            if ($comparison == '!=' && !is_null($value))
            {
                return true;
            }
        }

        return false;
    }

    private function comparisonSymbol($lhs, $comparison, $rhs)
    {
        switch ($comparison)
        {
            case '==':
                return ($lhs === $rhs);

            case '!=':
                return ($lhs !== $rhs);

            case '>':
                return ($lhs > $rhs);

            case '>=':
                return ($lhs >= $rhs);

            case '<':
                return ($lhs < $rhs);

            case '<=':
                return ($lhs <= $rhs);

            case '~=':
                return $this->contains($lhs, $rhs);

            case '_=':
                return $this->containsCaseInsensitive($lhs, $rhs);

            case '/=':
                return $this->regexMatches($lhs, $rhs);

            default:
                throw new Twig_Error_Syntax("Invalid where comparison ({$comparison})");
        }
    }

    private function contains($haystack, $needle)
    {
        return
            (is_array($haystack) && in_array($needle, $haystack)) ||
            (is_string($haystack) && strpos($haystack, $needle) !== false);
    }

    private function containsCaseInsensitive($haystack, $needle)
    {
        if (is_array($haystack))
        {
            $downCase = array_combine(array_map('strtolower', $haystack), $haystack);

            return isset($downCase[strtolower($needle)]);
        }

        return is_string($haystack) && strpos(strtolower($haystack), strtolower($needle)) !== false;
    }

    private function regexMatches($haystack, $regex)
    {
        return preg_match($regex, $haystack) === 1;
    }
}


1		<?php
2
3		/**
4		* @copyright 2017 Vladimir Jimenez
5		* @license https://github.com/allejo/stakx/blob/master/LICENSE.md MIT
6		*/
7
8		namespace allejo\stakx\Twig;
9
10		use allejo\stakx\Object\FrontMatterObject;
11		use allejo\stakx\Object\JailObject;
12		use Twig_Error_Syntax;
13
14		/**
15		* Where Twig Filter.
16		*
17		* This Twig filter introduces the `where` filter
18		*
19		* Usage:
20		* <array> \| where(<key>, <comparison>, <value>)
21		*
22		* Available comparisons:
23		* - == Ensure the values are equal and are the same data type
24		* - != Ensure the values are not equal; returns false if the values are the same but different data types
25		* - > Greater than
26		* - >= Greater than or equal to
27		* - < Less than
28		* - <= Less than or equal to
29		* - ~= Check if a string or array contains the <value>; case-sensitive
30		* - _= Check if a string or array contains the <value>; case-insensitive
31		* - /= Compare the <value> with a regular expression
32		*/
33		class WhereFilter
34		{
35		/**
36		* @param array\|\ArrayAccess[] $array The elements to filter through
37		* @param string $key The key value in an associative array or FrontMatter
38		* @param string $comparison The actual comparison symbols being used
39		* @param mixed $value The value we're searching for
40		*
41		* @return array
42		*/
43	39	public function __invoke($array, $key, $comparison, $value)
44		{
45	39	$results = array();
46	39	$this->search_r($array, $key, $comparison, $value, $results);
47
48	38	return $results;
49		}
50
51		/**
52		* @return \Twig_SimpleFilter
53		*/
54	4	public static function get()
55		{
56	4	return new \Twig_SimpleFilter('where', new self());
57		}
58
59		/**
60		* Recursive searching calling our comparison.
61		*
62		* @param array\|\ArrayAccess[] $array The elements to filter through
63		* @param string $key The key value in an associative array or FrontMatter
64		* @param string $comparison The actual comparison symbols being used
65		* @param string $value The value we're searching for
66		* @param array $results The reference to where to keep the filtered elements
67		*/
68	39	private function search_r($array, $key, $comparison, $value, &$results)
		0 ignored issues – show Coding Style introduced 2016-08-21 19:38 UTC by Report Bug Copy Issue Report This method is not in camel caps format. This check looks for method names that are not written in camelCase. In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. Thus the name database connection seeker becomes `databaseConnectionSeeker`. Loading history...
69		{
70	39	if (!is_array($array) && !($array instanceof \ArrayAccess))
71	39	{
72	19	return;
73		}
74
75	39	if ($this->compare($array, $key, $comparison, $value))
76	39	{
77	30	$results[] = $array;
78	30	}
79
80	39	foreach ($array as $subarray)
81		{
82	39	$this->search_r($subarray, $key, $comparison, $value, $results);
83	38	}
84	38	}
85
86		/**
87		* The logic for determining if an element matches the filter.
88		*
89		* @param array\|\ArrayAccess[] $array The elements to filter through
90		* @param string $key The key value in an associative array or FrontMatter
91		* @param string $comparison The actual comparison symbols being used
92		* @param mixed $value The value we're searching for
93		*
94		* @throws Twig_Error_Syntax
95		*
96		* @return bool
97		*/
98	39	private function compare($array, $key, $comparison, $value)
99		{
100	39	if ($this->compareNullValues($array, $key, $comparison, $value))
101	39	{
102	2	return true;
103		}
104
105	39	if (!isset($array[$key]))
106	39	{
107	39	return false;
108		}
109
110	38	return $this->comparisonSymbol($array[$key], $comparison, $value);
111		}
112
113		/**
114		* If the comparison is == or !=, then special behavior is defined for null values.
115		*
116		* @param array\|\ArrayAccess[] $array The elements to filter through
117		* @param string $key The key value in an associative array or FrontMatter
118		* @param string $comparison The actual comparison symbols being used
119		* @param mixed $value The value we're searching for
120		*
121		* @return bool
122		*/
123	39	private function compareNullValues($array, $key, $comparison, $value)
124		{
125	39	if ($comparison != '==' && $comparison != '!=')
126	39	{
127	25	return false;
128		}
129
130	14	if (!($array instanceof JailObject))
131	14	{
132	14	return false;
133		}
134
135	4	if ($array->coreInstanceOf(FrontMatterObject::class) && !isset($array[$key]))
136	4	{
137	4	if ($comparison == '==' && is_null($value))
138	4	{
139	1	return true;
140		}
141	3	if ($comparison == '!=' && !is_null($value))
142	3	{
143	1	return true;
144		}
145	2	}
146
147	4	return false;
148		}
149
150	38	private function comparisonSymbol($lhs, $comparison, $rhs)
151		{
152		switch ($comparison)
153		{
154	38	case '==':
155	9	return ($lhs === $rhs);
156
157	29	case '!=':
158	4	return ($lhs !== $rhs);
159
160	25	case '>':
161	3	return ($lhs > $rhs);
162
163	22	case '>=':
164	4	return ($lhs >= $rhs);
165
166	18	case '<':
167	3	return ($lhs < $rhs);
168
169	15	case '<=':
170	3	return ($lhs <= $rhs);
171
172	12	case '~=':
173	7	return $this->contains($lhs, $rhs);
174
175	5	case '_=':
176	3	return $this->containsCaseInsensitive($lhs, $rhs);
177
178	2	case '/=':
179	1	return $this->regexMatches($lhs, $rhs);
180
181	1	default:
182	1	throw new Twig_Error_Syntax("Invalid where comparison ({$comparison})");
183	1	}
184		}
185
186	7	private function contains($haystack, $needle)
187		{
188		return
189	7	(is_array($haystack) && in_array($needle, $haystack)) \|\|
190	7	(is_string($haystack) && strpos($haystack, $needle) !== false);
191		}
192
193	3	private function containsCaseInsensitive($haystack, $needle)
194		{
195	3	if (is_array($haystack))
196	3	{
197	1	$downCase = array_combine(array_map('strtolower', $haystack), $haystack);
198
199	1	return isset($downCase[strtolower($needle)]);
200		}
201
202	2	return is_string($haystack) && strpos(strtolower($haystack), strtolower($needle)) !== false;
203		}
204
205	1	private function regexMatches($haystack, $regex)
206		{
207	1	return preg_match($regex, $haystack) === 1;
208		}
209		}
210

stakx-io / stakx

Pull Request — master (#41)

WhereFilter::compareNullValues() D

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Complexity

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