wp-ultimate-post-grid / vendor / vafpress / classes / filesystem.php

filesystem.php in WP Ultimate Post Grid 2.8.2, at vendor/vafpress/classes/filesystem.php

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1	<?php
2
3	class VP_FileSystem
4	{
5
6	private static $_instance = null;
7
8	private $_lookup_dirs = array();
9
10	public static function instance()
11	{
12	if(is_null(self::$_instance))
13	{
14	self::$_instance = new self();
15	}
16	return self::$_instance;
17	}
18
19	public function get_first_non_empty_dir($key, $name = null)
20	{
21	if(!isset($this->_lookup_dirs[$key]))
22	return false;
23
24	foreach ($this->_lookup_dirs[$key] as $dir)
25	{
26	if (is_link($dir))
27	{
28	$dir = readlink($dir);
29	}
30	if(!is_null($name))
31	{
32	$dir = $dir . DIRECTORY_SEPARATOR . $name;
33	}
34	if($this->dir_contains_children($dir, 'php'))
35	{
36	return $dir;
37	}
38	}
39	}
40
41	public function resolve_path($key, $name, $ext = 'php')
42	{
43	if(!isset($this->_lookup_dirs[$key]))
44	return false;
45
46	$name = $this->normalize_path($name, $ext);
47
48	foreach ($this->_lookup_dirs[$key] as $dir)
49	{
50	$file = $dir . DIRECTORY_SEPARATOR . $name;
51	if (is_link($file))
52	{
53	$file = readlink($file);
54	}
55	if(file_exists($file))
56	{
57	return $file;
58	}
59	}
60	return false;
61	}
62
63	public function normalize_path($path, $ext)
64	{
65	$path = trim($path, '\\/');
66	return $path . '.' . $ext;
67	}
68
69	function dir_contains_children($dir, $ext = null)
70	{
71	$result = false;
72	if (is_link($dir))
73	{
74	$dir = readlink($dir);
75	}
76
77	if($dh = opendir($dir))
78	{
79	while(!$result && ($file = readdir($dh)) !== false)
80	{
81	$result = $file !== "." && $file !== "..";
82	if(!is_null($ext))
83	{
84	$result = pathinfo($file, PATHINFO_EXTENSION) === $ext;
85	}
86	}
87	closedir($dh);
88	}
89	return $result;
90	}
91
92	/**
93	* Add directories to the autoloader, loading process will be run in orderly fashion
94	* of directory addition.
95	*
96	* @param String\|Array $directories
97	* @return void
98	*/
99	public function add_directories($key, $directories)
100	{
101	if(!isset($this->_lookup_dirs[$key]))
102	{
103	$this->_lookup_dirs[$key] = array();
104	}
105	$this->_lookup_dirs[$key] = array_merge($this->_lookup_dirs[$key], (array) $directories);
106	$this->_lookup_dirs[$key] = array_unique($this->_lookup_dirs[$key]);
107	}
108
109	/**
110	* Remove directories.
111	*
112	* @param String\|Array $directories
113	* @return void
114	*/
115	public function remove_directories($key, $directories = null)
116	{
117	// annihilate everything if none / null passed
118	if(is_null($directories))
119	{
120	$this->_lookup_dirs[$key] = array();
121	}
122	else
123	{
124	// prepare directories to be filtered
125	$directories = (array) $directories;
126
127	// do the filtering
128	foreach ($this->_lookup_dirs[$key] as $name => $dir)
129	{
130	if(in_array($dir, $directories))
131	{
132	unset($this->_lookup_dirs[$key][$name]);
133	}
134	}
135	}
136	}
137
138	/**
139	* Get all directories
140	*
141	* @return Array
142	*/
143	public function get_directories($key = null)
144	{
145	if(!is_null($key))
146	return $this->_lookup_dirs[$key];
147	return $this->_lookup_dirs;
148	}
149
150	}