Util::explode() - Code Metrics - Inspection of "Ampache: Show dummy song if playlist contains an i..." - owncloud/music - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 89d351...c23d0c )

by Pauli

created 2020-09-10 18:24 UTC

Util::explode() A

↳ Parent: Util

Complexity

Conditions	3
Paths	2

Size

Total Lines	5
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	12

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	4
c	1
b	0
f	0
nc	2
nop	2
dl	0
loc	5
ccs	0
cts	4
cp	0
crap	12
rs	10

<?php

/**
 * ownCloud - Music app
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Pauli Järvinen <[email protected]>
 * @copyright Pauli Järvinen 2018 - 2020
 */

namespace OCA\Music\Utility;

/**
 * Miscellaneous static utility functions
 */
class Util {

	/**
	 * Extract ID of each array element by calling getId and return
	 * the IDs as an array
	 * @param array $arr
	 * @return array
	 */
	public static function extractIds(array $arr) {
		return \array_map(function ($i) {
			return $i->getId();
		}, $arr);
	}

	/**
	 * Extract User ID of each array element by calling getUserId and return
	 * the IDs as an array
	 * @param array $arr
	 * @return array
	 */
	public static function extractUserIds(array $arr) {
		return \array_map(function ($i) {
			return $i->getUserId();
		}, $arr);
	}

	/**
	 * Create look-up table from given array of items which have a `getId` function.
	 * @param array $array
	 * @return array where keys are the values returned by `getId` of each item
	 */
	public static function createIdLookupTable(array $array) {
		$lut = [];
		foreach ($array as $item) {
			$lut[$item->getId()] = $item;
		}
		return $lut;
	}

	/**
	 * Get difference of two arrays, i.e. elements belonging to $b but not $a.
	 * This function is faster than the built-in array_diff for large arrays but
	 * at the expense of higher RAM usage and can be used only for arrays of
	 * integers or strings.
	 * From https://stackoverflow.com/a/8827033
	 * @param array $b
	 * @param array $a
	 * @return array
	 */
	public static function arrayDiff(array $b, array $a) {
		$at = \array_flip($a);
		$d = [];
		foreach ($b as $i) {
			if (!isset($at[$i])) {
				$d[] = $i;
			}
		}
		return $d;
	}

	/**
	 * Get multiple items from @a $array, as indicated by a second array @a $indices.
	 * @param array $array
	 * @param array $indices
	 * @return array
	 */
	public static function arrayMultiGet(array $array, array $indices) {
		$result = [];
		foreach ($indices as $index) {
			$result[] = $array[$index];
		}
		return $result;
	}

	/**
	 * Convert the given array $arr so that keys of the potentially multi-dimensional array
	 * are converted using the mapping given in $dictionary. Keys not found from $dictionary
	 * are not altered. 
	 * @param array $arr
	 * @param array $dictionary
	 * @return array
	 */
	public static function convertArrayKeys(array $arr, array $dictionary) {
		$newArr = [];

		foreach ($arr as $k => $v) {
			$key = self::arrayGetOrDefault($dictionary, $k, $k);
			$newArr[$key] = is_array($v) ? self::convertArrayKeys($v, $dictionary) : $v;
		}

		return $newArr;
	}

	/**
	 * Get array value if exists, otherwise return a default value or null.
	 * The function supports getting value from a nested array by giving an array-type $key.
	 * In that case, the first value of the $key is used on the outer-most array, second value
	 * from $key on the next level, and so on. That is, arrayGetOrDefault($arr, ['a', 'b', 'c'])
	 * will return $arr['a']['b']['c'] is all the keys along the path are found.
	 *
	 * @param array $array
	 * @param int|string|array $key
	 * @param mixed|null $default
	 * @return mixed|null
	 */
	public static function arrayGetOrDefault(array $array, $key, $default=null) {
		if (!\is_array($key)) {
			$key = [$key];
		}

		$temp = $array;
		foreach ($key as $k) {
			if (isset($temp[$k])) {
				$temp = $temp[$k];
			} else {
				return $default;
			}
		}
		return $temp;
	}

	/**
	 * Like the built-in \explode(...) function but this one can be safely called with
	 * null string, and no warning will be emitted. Also, this returns an empty array from
	 * null and '' inputs while the built-in alternative returns a 1-item array containing
	 * an empty string.
	 * @param string $delimiter
	 * @param string|null $string
	 * @return array
	 */
	public static function explode($delimiter, $string) {
		if ($string === null || $string === '') {
			return [];
		} else {
			return \explode($delimiter, $string);
		}
	}

	/**
	 * Truncate the given string to maximum length, appendig ellipsis character
	 * if the truncation happened. Also null argument may be safely passed and
	 * it remains unaltered.
	 * @param string|null $string
	 * @param int $maxLength
	 * @return string|null
	 */
	public static function truncate($string, $maxLength) {
		if ($string === null) {
			return null;
		} else {
			return \mb_strimwidth($string, 0, $maxLength, "\u{2026}");
		}
	}

	/**
	 * Test if given string starts with another given string
	 * @param string $string
	 * @param string $potentialStart
	 * @param boolean $ignoreCase
	 * @return boolean
	 */
	public static function startsWith($string, $potentialStart, $ignoreCase=false) {
		$actualStart = \substr($string, 0, \strlen($potentialStart));
		if ($ignoreCase) {
			$actualStart= \mb_strtolower($actualStart);
			$potentialStart= \mb_strtolower($potentialStart);
		}
		return $actualStart === $potentialStart;
	}

	/**
	 * Test if given string ends with another given string
	 * @param string $string
	 * @param string $potentialEnd
	 * @param boolean $ignoreCase
	 * @return boolean
	 */
	public static function endsWith($string, $potentialEnd, $ignoreCase=false) {
		$actualEnd = \substr($string, -\strlen($potentialEnd));
		if ($ignoreCase) {
			$actualEnd = \mb_strtolower($actualEnd);
			$potentialEnd = \mb_strtolower($potentialEnd);
		}
		return $actualEnd === $potentialEnd;
	}

	/**
	 * Multi-byte safe case-insensitive string comparison
	 * @param string $a
	 * @param string $b
	 * @return int < 0 if $a is less than $b; > 0 if $a is greater than $b, and 0 if they are equal. 
	 */
	public static function stringCaseCompare($a, $b) {
		return \strcmp(\mb_strtolower($a), \mb_strtolower($b));
	}

	/**
	 * Convert file size given in bytes to human-readable format
	 * @param int $bytes
	 * @param int $decimals
	 * @return string
	 */
	public static function formatFileSize($bytes, $decimals = 1) {
		$units = 'BKMGTP';
		$factor = \floor((\strlen($bytes) - 1) / 3);
		return \sprintf("%.{$decimals}f", $bytes / \pow(1024, $factor)) . @$units[(int)$factor];
	}

	/**
	 * @param Folder $parentFolder
filter:
    dependency_paths: ["lib/*"]
	 * @param string $relativePath
	 * @return Folder
	 */
	public static function getFolderFromRelativePath($parentFolder, $relativePath) {
		if ($relativePath !== null && $relativePath !== '/' && $relativePath !== '') {
			return $parentFolder->get($relativePath);
		} else {
			return $parentFolder;
		}
	}

	/**
	 * Create relative path from the given working dir (CWD) to the given target path
	 * @param string $cwdPath Absolute CWD path
	 * @param string $targetPath Absolute target path
	 * @return string
	 */
	public static function relativePath($cwdPath, $targetPath) {
		$cwdParts = \explode('/', $cwdPath);
		$targetParts = \explode('/', $targetPath);

		// remove the common prefix of the paths
		while (\count($cwdParts) > 0 && \count($targetParts) > 0 && $cwdParts[0] === $targetParts[0]) {
			\array_shift($cwdParts);
			\array_shift($targetParts);
		}

		// prepend up-navigation from CWD to the closest common parent folder with the target
		for ($i = 0, $count = \count($cwdParts); $i < $count; ++$i) {
			\array_unshift($targetParts, '..');
		}

		return \implode('/', $targetParts);
	}

	/**
	 * Given a current working directory path (CWD) and a relative path (possibly containing '..' parts),
	 * form an absolute path matching the relative path. This is a reverse operation for Util::relativePath().
	 * @param string $cwdPath
	 * @param string $relativePath
	 * @return string
	 */
	public static function resolveRelativePath($cwdPath, $relativePath) {
		$cwdParts = \explode('/', $cwdPath);
		$relativeParts = \explode('/', $relativePath);

		// get rid of the trailing empty part of CWD which appears when CWD has a trailing '/'
		if ($cwdParts[\count($cwdParts)-1] === '') {
			\array_pop($cwdParts);
		}

		foreach ($relativeParts as $part) {
			if ($part === '..') {
				\array_pop($cwdParts);
			} else {
				\array_push($cwdParts, $part);
			}
		}

		return \implode('/', $cwdParts);
	}

	/**
	 * Encode a file path so that it can be used as part of a WebDAV URL
	 * @param string $path
	 * @return string
	 */
	public static function urlEncodePath($path) {
		// URL encode each part of the file path
		return \join('/', \array_map('rawurlencode', \explode('/', $path)));
	}

	/**
	 * Swap values of two variables in place
	 * @param mixed $a
	 * @param mixed $b
	 */
	public static function swap(&$a, &$b) {
		$temp = $a;
		$a = $b;
		$b = $temp;
	}
}


1		<?php
2
3		/**
4		* ownCloud - Music app
5		*
6		* This file is licensed under the Affero General Public License version 3 or
7		* later. See the COPYING file.
8		*
9		* @author Pauli Järvinen <[email protected]>
10		* @copyright Pauli Järvinen 2018 - 2020
11		*/
12
13		namespace OCA\Music\Utility;
14
15		/**
16		* Miscellaneous static utility functions
17		*/
18		class Util {
19
20		/**
21		* Extract ID of each array element by calling getId and return
22		* the IDs as an array
23		* @param array $arr
24		* @return array
25		*/
26	4	public static function extractIds(array $arr) {
27		return \array_map(function ($i) {
28	4	return $i->getId();
29	4	}, $arr);
30		}
31
32		/**
33		* Extract User ID of each array element by calling getUserId and return
34		* the IDs as an array
35		* @param array $arr
36		* @return array
37		*/
38		public static function extractUserIds(array $arr) {
39		return \array_map(function ($i) {
40		return $i->getUserId();
41		}, $arr);
42		}
43
44		/**
45		* Create look-up table from given array of items which have a `getId` function.
46		* @param array $array
47		* @return array where keys are the values returned by `getId` of each item
48		*/
49		public static function createIdLookupTable(array $array) {
50		$lut = [];
51		foreach ($array as $item) {
52		$lut[$item->getId()] = $item;
53		}
54		return $lut;
55		}
56
57		/**
58		* Get difference of two arrays, i.e. elements belonging to $b but not $a.
59		* This function is faster than the built-in array_diff for large arrays but
60		* at the expense of higher RAM usage and can be used only for arrays of
61		* integers or strings.
62		* From https://stackoverflow.com/a/8827033
63		* @param array $b
64		* @param array $a
65		* @return array
66		*/
67		public static function arrayDiff(array $b, array $a) {
68		$at = \array_flip($a);
69		$d = [];
70		foreach ($b as $i) {
71		if (!isset($at[$i])) {
72		$d[] = $i;
73		}
74		}
75		return $d;
76		}
77
78		/**
79		* Get multiple items from @a $array, as indicated by a second array @a $indices.
80		* @param array $array
81		* @param array $indices
82		* @return array
83		*/
84		public static function arrayMultiGet(array $array, array $indices) {
85		$result = [];
86		foreach ($indices as $index) {
87		$result[] = $array[$index];
88		}
89		return $result;
90		}
91
92		/**
93		* Convert the given array $arr so that keys of the potentially multi-dimensional array
94		* are converted using the mapping given in $dictionary. Keys not found from $dictionary
95		* are not altered.
96		* @param array $arr
97		* @param array $dictionary
98		* @return array
99		*/
100		public static function convertArrayKeys(array $arr, array $dictionary) {
101		$newArr = [];
102
103		foreach ($arr as $k => $v) {
104		$key = self::arrayGetOrDefault($dictionary, $k, $k);
105		$newArr[$key] = is_array($v) ? self::convertArrayKeys($v, $dictionary) : $v;
106		}
107
108		return $newArr;
109		}
110
111		/**
112		* Get array value if exists, otherwise return a default value or null.
113		* The function supports getting value from a nested array by giving an array-type $key.
114		* In that case, the first value of the $key is used on the outer-most array, second value
115		* from $key on the next level, and so on. That is, arrayGetOrDefault($arr, ['a', 'b', 'c'])
116		* will return $arr['a']['b']['c'] is all the keys along the path are found.
117		*
118		* @param array $array
119		* @param int\|string\|array $key
120		* @param mixed\|null $default
121		* @return mixed\|null
122		*/
123	3	public static function arrayGetOrDefault(array $array, $key, $default=null) {
124	3	if (!\is_array($key)) {
125	3	$key = [$key];
126		}
127
128	3	$temp = $array;
129	3	foreach ($key as $k) {
130	3	if (isset($temp[$k])) {
131		$temp = $temp[$k];
132		} else {
133	3	return $default;
134		}
135		}
136		return $temp;
137		}
138
139		/**
140		* Like the built-in \explode(...) function but this one can be safely called with
141		* null string, and no warning will be emitted. Also, this returns an empty array from
142		* null and '' inputs while the built-in alternative returns a 1-item array containing
143		* an empty string.
144		* @param string $delimiter
145		* @param string\|null $string
146		* @return array
147		*/
148		public static function explode($delimiter, $string) {
149		if ($string === null \|\| $string === '') {
150		return [];
151		} else {
152		return \explode($delimiter, $string);
153		}
154		}
155
156		/**
157		* Truncate the given string to maximum length, appendig ellipsis character
158		* if the truncation happened. Also null argument may be safely passed and
159		* it remains unaltered.
160		* @param string\|null $string
161		* @param int $maxLength
162		* @return string\|null
163		*/
164	3	public static function truncate($string, $maxLength) {
165	3	if ($string === null) {
166	1	return null;
167		} else {
168	2	return \mb_strimwidth($string, 0, $maxLength, "\u{2026}");
169		}
170		}
171
172		/**
173		* Test if given string starts with another given string
174		* @param string $string
175		* @param string $potentialStart
176		* @param boolean $ignoreCase
177		* @return boolean
178		*/
179		public static function startsWith($string, $potentialStart, $ignoreCase=false) {
180		$actualStart = \substr($string, 0, \strlen($potentialStart));
181		if ($ignoreCase) {
182		$actualStart= \mb_strtolower($actualStart);
183		$potentialStart= \mb_strtolower($potentialStart);
184		}
185		return $actualStart === $potentialStart;
186		}
187
188		/**
189		* Test if given string ends with another given string
190		* @param string $string
191		* @param string $potentialEnd
192		* @param boolean $ignoreCase
193		* @return boolean
194		*/
195		public static function endsWith($string, $potentialEnd, $ignoreCase=false) {
196		$actualEnd = \substr($string, -\strlen($potentialEnd));
197		if ($ignoreCase) {
198		$actualEnd = \mb_strtolower($actualEnd);
199		$potentialEnd = \mb_strtolower($potentialEnd);
200		}
201		return $actualEnd === $potentialEnd;
202		}
203
204		/**
205		* Multi-byte safe case-insensitive string comparison
206		* @param string $a
207		* @param string $b
208		* @return int < 0 if $a is less than $b; > 0 if $a is greater than $b, and 0 if they are equal.
209		*/
210		public static function stringCaseCompare($a, $b) {
211		return \strcmp(\mb_strtolower($a), \mb_strtolower($b));
212		}
213
214		/**
215		* Convert file size given in bytes to human-readable format
216		* @param int $bytes
217		* @param int $decimals
218		* @return string
219		*/
220		public static function formatFileSize($bytes, $decimals = 1) {
221		$units = 'BKMGTP';
222		$factor = \floor((\strlen($bytes) - 1) / 3);
223		return \sprintf("%.{$decimals}f", $bytes / \pow(1024, $factor)) . @$units[(int)$factor];
224		}
225
226		/**
227		* @param Folder $parentFolder
		0 ignored issues – show Bug introduced 2019-09-21 16:59 UTC by Report Bug Copy Issue Report The type `OCA\Music\Utility\Folder` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
228		* @param string $relativePath
229		* @return Folder
230		*/
231		public static function getFolderFromRelativePath($parentFolder, $relativePath) {
232		if ($relativePath !== null && $relativePath !== '/' && $relativePath !== '') {
233		return $parentFolder->get($relativePath);
234		} else {
235		return $parentFolder;
236		}
237		}
238
239		/**
240		* Create relative path from the given working dir (CWD) to the given target path
241		* @param string $cwdPath Absolute CWD path
242		* @param string $targetPath Absolute target path
243		* @return string
244		*/
245		public static function relativePath($cwdPath, $targetPath) {
246		$cwdParts = \explode('/', $cwdPath);
247		$targetParts = \explode('/', $targetPath);
248
249		// remove the common prefix of the paths
250		while (\count($cwdParts) > 0 && \count($targetParts) > 0 && $cwdParts[0] === $targetParts[0]) {
251		\array_shift($cwdParts);
252		\array_shift($targetParts);
253		}
254
255		// prepend up-navigation from CWD to the closest common parent folder with the target
256		for ($i = 0, $count = \count($cwdParts); $i < $count; ++$i) {
257		\array_unshift($targetParts, '..');
258		}
259
260		return \implode('/', $targetParts);
261		}
262
263		/**
264		* Given a current working directory path (CWD) and a relative path (possibly containing '..' parts),
265		* form an absolute path matching the relative path. This is a reverse operation for Util::relativePath().
266		* @param string $cwdPath
267		* @param string $relativePath
268		* @return string
269		*/
270		public static function resolveRelativePath($cwdPath, $relativePath) {
271		$cwdParts = \explode('/', $cwdPath);
272		$relativeParts = \explode('/', $relativePath);
273
274		// get rid of the trailing empty part of CWD which appears when CWD has a trailing '/'
275		if ($cwdParts[\count($cwdParts)-1] === '') {
276		\array_pop($cwdParts);
277		}
278
279		foreach ($relativeParts as $part) {
280		if ($part === '..') {
281		\array_pop($cwdParts);
282		} else {
283		\array_push($cwdParts, $part);
284		}
285		}
286
287		return \implode('/', $cwdParts);
288		}
289
290		/**
291		* Encode a file path so that it can be used as part of a WebDAV URL
292		* @param string $path
293		* @return string
294		*/
295		public static function urlEncodePath($path) {
296		// URL encode each part of the file path
297		return \join('/', \array_map('rawurlencode', \explode('/', $path)));
298		}
299
300		/**
301		* Swap values of two variables in place
302		* @param mixed $a
303		* @param mixed $b
304		*/
305		public static function swap(&$a, &$b) {
306		$temp = $a;
307		$a = $b;
308		$b = $temp;
309		}
310		}
311

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