Sort::getCollator() - Code Metrics - Inspection of "test the collator fallback always" - splitbrain/dokuwiki - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — pr-3115 ( f9aa34 )

by Andreas

created 2020-08-12 10:23 UTC

Sort::getCollator() B

↳ Parent: Sort

Complexity

Conditions	6
Paths	4

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	6
nc	4
nop	1
dl	0
loc	20
rs	8.9777
c	0
b	0
f	0

<?php

namespace dokuwiki\Utf8;

/**
 * DokuWiki sort functions
 *
 * When "intl" extension is available, all sorts are done using a collator.
 * Otherwise, primitive PHP functions are called.
 *
 * The collator is created using the locale given in $conf['lang'].
 * It always uses case insensitive "natural" ordering in its collation.
 * The fallback solution uses the primitive PHP functions that return almost the same results
 * when the input is text with only [A-Za-z0-9] characters.
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Moisés Braga Ribeiro <[email protected]>
 */
class Sort
{
    /** @var \Collator[] language specific collators, usually only one */
    protected static $collator = [];

    /** @var bool should the intl extension be used if available? For testing only */
    protected static $useIntl = true;

    /**
     * Initialization of a collator using $conf['lang'] as the locale.
     * The initialization is done only once, except when $reload is set to true.
     * The collation takes "natural ordering" into account, that is, "page 2" is before "page 10".
     *
     * @param bool $reload Usually false; true forces collator re-creation
     * @return \Collator Returns a configured collator or null if the collator cannot be created.
     *
     * @author Moisés Braga Ribeiro <[email protected]>
     */
    protected static function getCollator($reload = false)
    {
        global $conf;
        $lc = $conf['lang'];

        // check if intl extension is available
        if (!self::$useIntl || !class_exists('\Collator')) {
            return null;
        }

        // load collator if not available yet
        if ($reload || !isset(self::$collator[$lc])) {
            $collator = \Collator::create($lc);
            if (!isset($collator)) return null;
            $collator->setAttribute(\Collator::NUMERIC_COLLATION, \Collator::ON);
            self::$collator[$lc] = $collator;
        }

        return self::$collator[$lc];
    }

    /**
     * Enable or disable the use of the intl extension collator
     *
     * This is mostly used for testing and should not be used in normal code
     *
     * @param bool $use
     */
    public static function useIntl($use = true)
    {
        self::$useIntl = $use;
        self::$collator = [];
    }

    /**
     * Drop-in replacement for strcmp(), strcasecmp(), strnatcmp() and strnatcasecmp().
     * It uses a collator-based comparison, or strnatcasecmp() as a fallback.
     *
     * @param string $str1 The first string.
     * @param string $str2 The second string.
     * @return int Returns < 0 if $str1 is less than $str2; > 0 if $str1 is greater than $str2, and 0 if they are equal.
     *
     * @author Moisés Braga Ribeiro <[email protected]>
     */
    public static function strcmp($str1, $str2)
    {
        $collator = self::getCollator();
        if (isset($collator)) {
            return $collator->compare($str1, $str2);
        } else {
            return strnatcasecmp($str1, $str2);
        }
    }

    /**
     * Drop-in replacement for sort().
     * It uses a collator-based sort, or sort() with flags SORT_NATURAL and SORT_FLAG_CASE as a fallback.
     *
     * @param array $array The input array.
     * @return bool Returns true on success or false on failure.
     *
     * @author Moisés Braga Ribeiro <[email protected]>
     */
    public static function sort(&$array)
    {
        $collator = self::getCollator();
        if (isset($collator)) {
            return $collator->sort($array);
        } else {
            return sort($array, SORT_NATURAL | SORT_FLAG_CASE);
        }
    }

    /**
     * Drop-in replacement for ksort().
     * It uses a collator-based sort, or ksort() with flags SORT_NATURAL and SORT_FLAG_CASE as a fallback.
     *
     * @param array $array The input array.
     * @return bool Returns true on success or false on failure.
     *
     * @author Moisés Braga Ribeiro <[email protected]>
     */
    public static function ksort(&$array)
    {
        $collator = self::getCollator();
        if (isset($collator)) {
            return uksort($array, array($collator, 'compare'));
        } else {
            return ksort($array, SORT_NATURAL | SORT_FLAG_CASE);
        }
    }

    /**
     * Drop-in replacement for asort(), natsort() and natcasesort().
     * It uses a collator-based sort, or asort() with flags SORT_NATURAL and SORT_FLAG_CASE as a fallback.
     *
     * @param array $array The input array.
     * @return bool Returns true on success or false on failure.
     *
     * @author Moisés Braga Ribeiro <[email protected]>
     */
    public static function asort(&$array)
    {
        $collator = self::getCollator();
        if (isset($collator)) {
            return $collator->asort($array);
        } else {
            return asort($array, SORT_NATURAL | SORT_FLAG_CASE);
        }
    }

    /**
     * Drop-in replacement for asort(), natsort() and natcasesort() when the parameter is an array of filenames.
     * Filenames may not be equal to page names, depending on the setting in $conf['fnencode'],
     * so the correct behavior is to sort page names and reflect this sorting in the filename array.
     *
     * @param array $array The input array.
     * @return bool Returns true on success or false on failure.
     *
     * @author Moisés Braga Ribeiro <[email protected]>
     */
    public static function asortFN(&$array)
    {
        $collator = self::getCollator();
        return uasort($array, function ($fn1, $fn2) use ($collator) {
            if (isset($collator)) {
                return $collator->compare(utf8_decodeFN($fn1), utf8_decodeFN($fn2));
            } else {
                return strnatcasecmp(utf8_decodeFN($fn1), utf8_decodeFN($fn2));
            }
        });
    }

}


1			<?php
2
3			namespace dokuwiki\Utf8;
4
5			/**
6			* DokuWiki sort functions
7			*
8			* When "intl" extension is available, all sorts are done using a collator.
9			* Otherwise, primitive PHP functions are called.
10			*
11			* The collator is created using the locale given in $conf['lang'].
12			* It always uses case insensitive "natural" ordering in its collation.
13			* The fallback solution uses the primitive PHP functions that return almost the same results
14			* when the input is text with only [A-Za-z0-9] characters.
15			*
16			* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
17			* @author Moisés Braga Ribeiro <[email protected]>
18			*/
19			class Sort
20			{
21			/** @var \Collator[] language specific collators, usually only one */
22			protected static $collator = [];
23
24			/** @var bool should the intl extension be used if available? For testing only */
25			protected static $useIntl = true;
26
27			/**
28			* Initialization of a collator using $conf['lang'] as the locale.
29			* The initialization is done only once, except when $reload is set to true.
30			* The collation takes "natural ordering" into account, that is, "page 2" is before "page 10".
31			*
32			* @param bool $reload Usually false; true forces collator re-creation
33			* @return \Collator Returns a configured collator or null if the collator cannot be created.
34			*
35			* @author Moisés Braga Ribeiro <[email protected]>
36			*/
37			protected static function getCollator($reload = false)
38			{
39			global $conf;
40			$lc = $conf['lang'];
41
42			// check if intl extension is available
43			if (!self::$useIntl \|\| !class_exists('\Collator')) {
44			return null;
45			}
46
47			// load collator if not available yet
48			if ($reload \|\| !isset(self::$collator[$lc])) {
49			$collator = \Collator::create($lc);
50			if (!isset($collator)) return null;
51			$collator->setAttribute(\Collator::NUMERIC_COLLATION, \Collator::ON);
52			self::$collator[$lc] = $collator;
53			}
54
55			return self::$collator[$lc];
56			}
57
58			/**
59			* Enable or disable the use of the intl extension collator
60			*
61			* This is mostly used for testing and should not be used in normal code
62			*
63			* @param bool $use
64			*/
65			public static function useIntl($use = true)
66			{
67			self::$useIntl = $use;
68			self::$collator = [];
69			}
70
71			/**
72			* Drop-in replacement for strcmp(), strcasecmp(), strnatcmp() and strnatcasecmp().
73			* It uses a collator-based comparison, or strnatcasecmp() as a fallback.
74			*
75			* @param string $str1 The first string.
76			* @param string $str2 The second string.
77			* @return int Returns < 0 if $str1 is less than $str2; > 0 if $str1 is greater than $str2, and 0 if they are equal.
78			*
79			* @author Moisés Braga Ribeiro <[email protected]>
80			*/
81			public static function strcmp($str1, $str2)
82			{
83			$collator = self::getCollator();
84			if (isset($collator)) {
85			return $collator->compare($str1, $str2);
86			} else {
87			return strnatcasecmp($str1, $str2);
88			}
89			}
90
91			/**
92			* Drop-in replacement for sort().
93			* It uses a collator-based sort, or sort() with flags SORT_NATURAL and SORT_FLAG_CASE as a fallback.
94			*
95			* @param array $array The input array.
96			* @return bool Returns true on success or false on failure.
97			*
98			* @author Moisés Braga Ribeiro <[email protected]>
99			*/
100			public static function sort(&$array)
101			{
102			$collator = self::getCollator();
103			if (isset($collator)) {
104			return $collator->sort($array);
105			} else {
106			return sort($array, SORT_NATURAL \| SORT_FLAG_CASE);
107			}
108			}
109
110			/**
111			* Drop-in replacement for ksort().
112			* It uses a collator-based sort, or ksort() with flags SORT_NATURAL and SORT_FLAG_CASE as a fallback.
113			*
114			* @param array $array The input array.
115			* @return bool Returns true on success or false on failure.
116			*
117			* @author Moisés Braga Ribeiro <[email protected]>
118			*/
119			public static function ksort(&$array)
120			{
121			$collator = self::getCollator();
122			if (isset($collator)) {
123			return uksort($array, array($collator, 'compare'));
124			} else {
125			return ksort($array, SORT_NATURAL \| SORT_FLAG_CASE);
126			}
127			}
128
129			/**
130			* Drop-in replacement for asort(), natsort() and natcasesort().
131			* It uses a collator-based sort, or asort() with flags SORT_NATURAL and SORT_FLAG_CASE as a fallback.
132			*
133			* @param array $array The input array.
134			* @return bool Returns true on success or false on failure.
135			*
136			* @author Moisés Braga Ribeiro <[email protected]>
137			*/
138			public static function asort(&$array)
139			{
140			$collator = self::getCollator();
141			if (isset($collator)) {
142			return $collator->asort($array);
143			} else {
144			return asort($array, SORT_NATURAL \| SORT_FLAG_CASE);
145			}
146			}
147
148			/**
149			* Drop-in replacement for asort(), natsort() and natcasesort() when the parameter is an array of filenames.
150			* Filenames may not be equal to page names, depending on the setting in $conf['fnencode'],
151			* so the correct behavior is to sort page names and reflect this sorting in the filename array.
152			*
153			* @param array $array The input array.
154			* @return bool Returns true on success or false on failure.
155			*
156			* @author Moisés Braga Ribeiro <[email protected]>
157			*/
158			public static function asortFN(&$array)
159			{
160			$collator = self::getCollator();
161			return uasort($array, function ($fn1, $fn2) use ($collator) {
162			if (isset($collator)) {
163			return $collator->compare(utf8_decodeFN($fn1), utf8_decodeFN($fn2));
164			} else {
165			return strnatcasecmp(utf8_decodeFN($fn1), utf8_decodeFN($fn2));
166			}
167			});
168			}
169
170			}
171

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Push — pr-3115 ( f9aa34 )

Sort::getCollator() B

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