Util::resolveRelativePath() - Code Metrics - Inspection of "[WIP] Playlist improvements" - owncloud/music - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#777)

by Pauli

created 2020-07-19 17:31 UTC

Util::resolveRelativePath() A

↳ Parent: Util

Complexity

Conditions	4
Paths	6

Size

Total Lines	18
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	20

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	4
eloc	10
nc	6
nop	2
dl	0
loc	18
ccs	0
cts	10
cp	0
crap	20
rs	9.9332
c	1
b	0
f	0

<?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
	 * @param array $array
	 * @param int|string $key
	 * @param mixed|null $default
	 * @return mixed|null
	 */
	public static function arrayGetOrDefault(array $array, $key, $default=null) {
		return isset($array[$key]) ? $array[$key] : $default;
	}

	/**
	 * 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 $potentialStart
	 * @return boolean
	 */
	public static function startsWith($string, $potentialStart) {
		return \substr($string, 0, \strlen($potentialStart)) === $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);
	}

	/**
	 * 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		* @param array $array
114		* @param int\|string $key
115		* @param mixed\|null $default
116		* @return mixed\|null
117		*/
118	3	public static function arrayGetOrDefault(array $array, $key, $default=null) {
119	3	return isset($array[$key]) ? $array[$key] : $default;
120		}
121
122		/**
123		* Truncate the given string to maximum length, appendig ellipsis character
124		* if the truncation happened. Also null argument may be safely passed and
125		* it remains unaltered.
126		* @param string\|null $string
127		* @param int $maxLength
128		* @return string\|null
129		*/
130	3	public static function truncate($string, $maxLength) {
131	3	if ($string === null) {
132	1	return null;
133		} else {
134	2	return \mb_strimwidth($string, 0, $maxLength, "\u{2026}");
135		}
136		}
137
138		/**
139		* Test if given string starts with another given string
140		* @param string $string
141		* @param string $potentialStart
142		* @return boolean
143		*/
144		public static function startsWith($string, $potentialStart) {
145		return \substr($string, 0, \strlen($potentialStart)) === $potentialStart;
146		}
147
148		/**
149		* Test if given string ends with another given string
150		* @param string $string
151		* @param string $potentialEnd
152		* @param boolean $ignoreCase
153		* @return boolean
154		*/
155		public static function endsWith($string, $potentialEnd, $ignoreCase=false) {
156		$actualEnd = \substr($string, -\strlen($potentialEnd));
157		if ($ignoreCase) {
158		$actualEnd = \mb_strtolower($actualEnd);
159		$potentialEnd = \mb_strtolower($potentialEnd);
160		}
161		return $actualEnd === $potentialEnd;
162		}
163
164		/**
165		* Multi-byte safe case-insensitive string comparison
166		* @param string $a
167		* @param string $b
168		* @return int < 0 if $a is less than $b; > 0 if $a is greater than $b, and 0 if they are equal.
169		*/
170		public static function stringCaseCompare($a, $b) {
171		return \strcmp(\mb_strtolower($a), \mb_strtolower($b));
172		}
173
174		/**
175		* Convert file size given in bytes to human-readable format
176		* @param int $bytes
177		* @param int $decimals
178		* @return string
179		*/
180		public static function formatFileSize($bytes, $decimals = 1) {
181		$units = 'BKMGTP';
182		$factor = \floor((\strlen($bytes) - 1) / 3);
183		return \sprintf("%.{$decimals}f", $bytes / \pow(1024, $factor)) . @$units[(int)$factor];
184		}
185
186		/**
187		* @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...
188		* @param string $relativePath
189		* @return Folder
190		*/
191		public static function getFolderFromRelativePath($parentFolder, $relativePath) {
192		if ($relativePath !== null && $relativePath !== '/' && $relativePath !== '') {
193		return $parentFolder->get($relativePath);
194		} else {
195		return $parentFolder;
196		}
197		}
198
199		/**
200		* Create relative path from the given working dir (CWD) to the given target path
201		* @param string $cwdPath Absolute CWD path
202		* @param string $targetPath Absolute target path
203		* @return string
204		*/
205		public static function relativePath($cwdPath, $targetPath) {
206		$cwdParts = \explode('/', $cwdPath);
207		$targetParts = \explode('/', $targetPath);
208
209		// remove the common prefix of the paths
210		while (\count($cwdParts) > 0 && \count($targetParts) > 0 && $cwdParts[0] === $targetParts[0]) {
211		\array_shift($cwdParts);
212		\array_shift($targetParts);
213		}
214
215		// prepend up-navigation from CWD to the closest common parent folder with the target
216		for ($i = 0, $count = \count($cwdParts); $i < $count; ++$i) {
217		\array_unshift($targetParts, '..');
218		}
219
220		return \implode('/', $targetParts);
221		}
222
223		/**
224		* Given a current working directory path (CWD) and a relative path (possibly containing '..' parts),
225		* form an absolute path matching the relative path. This is a reverse operation for Util::relativePath().
226		* @param string $cwdPath
227		* @param string $relativePath
228		* @return string
229		*/
230		public static function resolveRelativePath($cwdPath, $relativePath) {
231		$cwdParts = \explode('/', $cwdPath);
232		$relativeParts = \explode('/', $relativePath);
233
234		// get rid of the trailing empty part of CWD which appears when CWD has a trailing '/'
235		if ($cwdParts[\count($cwdParts)-1] === '') {
236		\array_pop($cwdParts);
237		}
238
239		foreach ($relativeParts as $part) {
240		if ($part === '..') {
241		\array_pop($cwdParts);
242		} else {
243		\array_push($cwdParts, $part);
244		}
245		}
246
247		return \implode('/', $cwdParts);
248		}
249
250		/**
251		* Swap values of two variables in place
252		* @param mixed $a
253		* @param mixed $b
254		*/
255		public static function swap(&$a, &$b) {
256		$temp = $a;
257		$a = $b;
258		$b = $temp;
259		}
260		}
261

owncloud / music

Pull Request — master (#777)

Util::resolveRelativePath() A

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