Autoloader.php
2.12 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
<?php
/*
PHPRtfLite
Copyright 2010-2012 Steffen Zeidler <sigma_z@sigma-scripts.de>
This file is part of PHPRtfLite.
PHPRtfLite is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
PHPRtfLite is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PHPRtfLite. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Class for autoloading PHPRtfLite classes.
* @version 1.2
* @author Steffen Zeidler <sigma_z@sigma-scripts.de>
* @copyright 2010-2012 Steffen Zeidler
* @package PHPRtfLite
*/
class PHPRtfLite_Autoloader
{
/**
* base dir of the PHPRtfLite package
* @var string
*/
protected static $_baseDir;
/**
* sets the base dir, where PHPRtfLite classes can be found
*
* @param string $dir
*/
public static function setBaseDir($dir)
{
self::$_baseDir = $dir;
}
/**
* loads PHPRtfLite classes
*
* @param string $className
* @return boolean returns true, if class could be loaded
*/
public static function autoload($className)
{
// validate classname
if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/m', $className)) {
throw new Exception("Class name '$className' is invalid");
}
$classFile = self::$_baseDir . '/' . str_replace('_', '/', $className) . '.php';
// check if file exists
if (!file_exists($classFile)) {
throw new Exception("File $classFile does not exist!");
}
require $classFile;
if (!class_exists($className) && !interface_exists($className)) {
throw new Exception("Class $className could not be found!");
}
}
}