Path::getParts() - Code Metrics - Riimu/Kit-PathJoin - Measure and Improve Code Quality continuously with Scrutinizer

Path::getParts() A
last analyzed 2017-07-15 13:37 UTC

↳ Parent: Path

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	8
ccs	4
cts	4
cp	1
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	4
nc	2
nop	1
crap	2

<?php

namespace Riimu\Kit\PathJoin;

/**
 * Cross-platform library for normalizing and joining file system paths.
 * @author Riikka Kalliomäki <[email protected]>
 * @copyright Copyright (c) 2014-2017 Riikka Kalliomäki
 * @license http://opensource.org/licenses/mit-license.php MIT License
 */
class Path
{
    /**
     * Normalizes the provided file system path.
     *
     * Normalizing file system paths means that all forward and backward
     * slashes in the path will be replaced with the system directory separator
     * and multiple directory separators will be condensed into one.
     * Additionally, all `.` and `..` directory references will be resolved in
     * the returned path.
     *
     * Note that if the normalized path is not an absolute path, the resulting
     * path may begin with `..` directory references if it is not possible to
     * resolve them simply by using string handling. You should also note that
     * if the resulting path would result in an empty string, this method will
     * return `.` instead.
     *
     * If the `$prependDrive` option is enabled, the normalized path will be
     * prepended with the drive name on Windows platforms using the current
     * working directory, if the path is an absolute path that does not include
     * a drive name.
     *
     * @param string $path File system path to normalize
     * @param bool $prependDrive True to prepend drive name to absolute paths
     * @return string The normalizes file system path
     */
    public static function normalize($path, $prependDrive = true)
    {
        $path = self::join((string) $path);

        if ($prependDrive && $path[0] === DIRECTORY_SEPARATOR) {
            return strstr(getcwd(), DIRECTORY_SEPARATOR, true) . $path;
        }

        return $path;
    }

    /**
     * Joins the provided file systems paths together and normalizes the result.
     *
     * The paths can be provided either as multiple arguments to this method
     * or as an array. The paths will be joined using the system directory
     * separator and the result will be normalized similar to the normalization
     * method (the drive letter will not be prepended however).
     *
     * Note that unless the first path in the list is an absolute path, the
     * entire resulting path will be treated as a relative path.
     *
     * @param string[]|string $paths File system paths to join
     * @return string The joined file system paths
     */
    public static function join($paths)
    {
        $joins = array_map('strval', is_array($paths) ? $paths : func_get_args());
        $parts = self::getParts($joins);
        $absolute = self::isAbsolute($joins[0]);
        $root = $absolute ? array_shift($parts) . DIRECTORY_SEPARATOR : '';
        $parts = self::resolve($parts, $absolute);

        return self::buildPath($root, $parts);
    }

    /**
     * Builds the final path from the root and path parts.
     * @param string $root Root path
     * @param string[] $parts The path parts
     * @return string The final built path
     */
    private static function buildPath($root, array $parts)
    {
        if ($parts === []) {
            return $root === '' ? '.' : $root;
        }

        return $root . implode(DIRECTORY_SEPARATOR, $parts);
    }

    /**
     * Merges the paths and returns the individual parts.
     * @param string[] $paths Array of paths
     * @return string[] Parts in the paths merged into a single array
     * @throws \InvalidArgumentException If no paths have been provided
     */
    private static function getParts(array $paths)
    {
        if ($paths === []) {
            throw new \InvalidArgumentException('You must provide at least one path');
        }

        return preg_split('# *[/\\\\]+ *#', trim(implode('/', $paths), ' '));
    }

    /**
     * Tells if the path is an absolute path.
     * @param string $path The file system path to test
     * @return bool True if the path is an absolute path, false if not
     */
    private static function isAbsolute($path)
    {
        $path = trim($path);

        if ($path === '') {
            return false;
        }

        $length = strcspn($path, '/\\');

        return $length === 0 || $path[$length - 1] === ':';
    }

    /**
     * Resolves parent directory references and removes redundant entries.
     * @param string[] $parts List of parts in the the path
     * @param bool $absolute Whether the path is an absolute path or not
     * @return string[] Resolved list of parts in the path
     */
    private static function resolve(array $parts, $absolute)
    {
        $resolved = [];

        foreach ($parts as $path) {
            if ($path === '..') {
                self::resolveParent($resolved, $absolute);
            } elseif (self::isValidPath($path)) {
                $resolved[] = $path;
            }
        }

        return $resolved;
    }

    /**
     * Tells if the part of the path is valid and not empty.
     * @param string $path Part of the path to check for redundancy
     * @return bool True if the path is valid and not empty, false if not
     * @throws \InvalidArgumentException If the path contains invalid characters
     */
    private static function isValidPath($path)
    {
        if (strpos($path, ':') !== false) {
            throw new \InvalidArgumentException('Invalid path character ":"');
        }

        return $path !== '' && $path !== '.';
    }

    /**
     * Resolves the relative parent directory for the path.
     * @param string[] $parts Path parts to modify
     * @param bool $absolute True if dealing with absolute path, false if not
     */
    private static function resolveParent(array & $parts, $absolute)
    {
        $count = count($parts);

        if ($absolute || ($count > 0 && $parts[$count - 1] !== '..')) {
            array_pop($parts);
            return;
        }

        $parts[] = '..';
    }
}


1		<?php
2
3		namespace Riimu\Kit\PathJoin;
4
5		/**
6		* Cross-platform library for normalizing and joining file system paths.
7		* @author Riikka Kalliomäki <[email protected]>
8		* @copyright Copyright (c) 2014-2017 Riikka Kalliomäki
9		* @license http://opensource.org/licenses/mit-license.php MIT License
10		*/
11		class Path
12		{
13		/**
14		* Normalizes the provided file system path.
15		*
16		* Normalizing file system paths means that all forward and backward
17		* slashes in the path will be replaced with the system directory separator
18		* and multiple directory separators will be condensed into one.
19		* Additionally, all `.` and `..` directory references will be resolved in
20		* the returned path.
21		*
22		* Note that if the normalized path is not an absolute path, the resulting
23		* path may begin with `..` directory references if it is not possible to
24		* resolve them simply by using string handling. You should also note that
25		* if the resulting path would result in an empty string, this method will
26		* return `.` instead.
27		*
28		* If the `$prependDrive` option is enabled, the normalized path will be
29		* prepended with the drive name on Windows platforms using the current
30		* working directory, if the path is an absolute path that does not include
31		* a drive name.
32		*
33		* @param string $path File system path to normalize
34		* @param bool $prependDrive True to prepend drive name to absolute paths
35		* @return string The normalizes file system path
36		*/
37	12	public static function normalize($path, $prependDrive = true)
38		{
39	12	$path = self::join((string) $path);
40
41	12	if ($prependDrive && $path[0] === DIRECTORY_SEPARATOR) {
42	3	return strstr(getcwd(), DIRECTORY_SEPARATOR, true) . $path;
43		}
44
45	9	return $path;
46		}
47
48		/**
49		* Joins the provided file systems paths together and normalizes the result.
50		*
51		* The paths can be provided either as multiple arguments to this method
52		* or as an array. The paths will be joined using the system directory
53		* separator and the result will be normalized similar to the normalization
54		* method (the drive letter will not be prepended however).
55		*
56		* Note that unless the first path in the list is an absolute path, the
57		* entire resulting path will be treated as a relative path.
58		*
59		* @param string[]\|string $paths File system paths to join
60		* @return string The joined file system paths
61		*/
62	45	public static function join($paths)
63		{
64	45	$joins = array_map('strval', is_array($paths) ? $paths : func_get_args());
65	45	$parts = self::getParts($joins);
66	42	$absolute = self::isAbsolute($joins[0]);
67	42	$root = $absolute ? array_shift($parts) . DIRECTORY_SEPARATOR : '';
68	42	$parts = self::resolve($parts, $absolute);
69
70	39	return self::buildPath($root, $parts);
71		}
72
73		/**
74		* Builds the final path from the root and path parts.
75		* @param string $root Root path
76		* @param string[] $parts The path parts
77		* @return string The final built path
78		*/
79	39	private static function buildPath($root, array $parts)
80		{
81	39	if ($parts === []) {
82	15	return $root === '' ? '.' : $root;
83		}
84
85	33	return $root . implode(DIRECTORY_SEPARATOR, $parts);
86		}
87
88		/**
89		* Merges the paths and returns the individual parts.
90		* @param string[] $paths Array of paths
91		* @return string[] Parts in the paths merged into a single array
92		* @throws \InvalidArgumentException If no paths have been provided
93		*/
94	45	private static function getParts(array $paths)
95		{
96	45	if ($paths === []) {
97	3	throw new \InvalidArgumentException('You must provide at least one path');
98		}
99
100	42	return preg_split('# [/\\\\]+ #', trim(implode('/', $paths), ' '));
101		}
102
103		/**
104		* Tells if the path is an absolute path.
105		* @param string $path The file system path to test
106		* @return bool True if the path is an absolute path, false if not
107		*/
108	42	private static function isAbsolute($path)
109		{
110	42	$path = trim($path);
111
112	42	if ($path === '') {
113	6	return false;
114		}
115
116	39	$length = strcspn($path, '/\\');
117
118	39	return $length === 0 \|\| $path[$length - 1] === ':';
119		}
120
121		/**
122		* Resolves parent directory references and removes redundant entries.
123		* @param string[] $parts List of parts in the the path
124		* @param bool $absolute Whether the path is an absolute path or not
125		* @return string[] Resolved list of parts in the path
126		*/
127	42	private static function resolve(array $parts, $absolute)
128		{
129	42	$resolved = [];
130
131	42	foreach ($parts as $path) {
132	42	if ($path === '..') {
133	12	self::resolveParent($resolved, $absolute);
134	42	} elseif (self::isValidPath($path)) {
135	40	$resolved[] = $path;
136	12	}
137	14	}
138
139	39	return $resolved;
140		}
141
142		/**
143		* Tells if the part of the path is valid and not empty.
144		* @param string $path Part of the path to check for redundancy
145		* @return bool True if the path is valid and not empty, false if not
146		* @throws \InvalidArgumentException If the path contains invalid characters
147		*/
148	42	private static function isValidPath($path)
149		{
150	42	if (strpos($path, ':') !== false) {
151	3	throw new \InvalidArgumentException('Invalid path character ":"');
152		}
153
154	42	return $path !== '' && $path !== '.';
155		}
156
157		/**
158		* Resolves the relative parent directory for the path.
159		* @param string[] $parts Path parts to modify
160		* @param bool $absolute True if dealing with absolute path, false if not
161		*/
162	12	private static function resolveParent(array & $parts, $absolute)
163		{
164	12	$count = count($parts);
165
166	12	if ($absolute \|\| ($count > 0 && $parts[$count - 1] !== '..')) {
167	12	array_pop($parts);
168	12	return;
169		}
170
171	3	$parts[] = '..';
172	3	}
173		}
174

Riimu / Kit-PathJoin

Path::getParts() A last analyzed 2017-07-15 13:37 UTC

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Path::getParts() A
last analyzed 2017-07-15 13:37 UTC