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Merge branch 'feature-multiple-autoloader-bases'

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This commit is contained in:
Ben Roberts
2010-10-10 20:50:39 +01:00
parent 4bbe036f70 d6eb1aa5ed
commit f592abe15f
1 changed files with 88 additions and 52 deletions
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140
source/lib/SihnonFramework/Main.class.php
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@@ -4,6 +4,15 @@ class SihnonFramework_Main {
protected static $instance;
protected static $autoload_classes = array(
array(
'base' => 'SihnonFramework',
'base_dir_prefix' => SihnonFramework_Lib,
'subclass' => 'Sihnon',
'subclass_dir_prefix' => Sihnon_Lib,
),
);
protected $config;
protected $database;
protected $log;
@@ -99,69 +108,96 @@ class SihnonFramework_Main {
if (!preg_match('/^[A-Z][a-zA-Z0-9_]*$/', $classname)) {
throw new Exception('Illegal characters in classname');
}
// Ensure the class to load begins with our prefix
if (preg_match('/^SihnonFramework_/', $classname)) {
// Special case: all related exceptions are grouped into a single file
if (preg_match('/^(Sihnon(?:Framework)?_(?:.*_))Exception/', $classname, $matches = array())) {
require_once(Sihnon_Lib . preg_replace('/_/', '/', $matches[1]) . 'Exceptions.class.php');
return;
}
// Replace any underscores with directory separators
$filename = SihnonFramework_Lib . preg_replace('/_/', '/', $classname) . '.class.php';
foreach (self::$autoload_classes as $class) {
// If this file exists, load it
if (file_exists($filename)) {
require_once $filename;
return;
}
} elseif (preg_match('/^Sihnon_/', $classname)) {
// Sihnon_ classes subclass the SihnonFramework_ classes.
// If a subclass doesn't exist, create it on the fly
// Special case: all related exceptions are grouped into a single file
if (preg_match('/^(Sihnon(?:Framework)?_(?:.*_))Exception/', $classname, $matches = array())) {
require_once(Sihnon_Lib . preg_replace('/_/', '/', $matches[1]) . 'Exceptions.class.php');
return;
}
// Replace any underscores with directory separators
$filename = Sihnon_Lib . preg_replace('/_/', '/', $classname) . '.class.php';
// If this file exists, load it
if (file_exists($filename)) {
require_once $filename;
return;
} else {
// Create this class to extend the Framework parent
$parent_classname = preg_replace('/^Sihnon_/', 'SihnonFramework_', $classname);
// Determine if the classname represents a class or an interface
$parent_class = new ReflectionClass($parent_classname);
$class_definition = '';
if ($parent_class->isFinal()) {
// Final classes cannot be extended
// Ensure the class to load begins with our prefix
if (preg_match("/^{$class['base']}_/", $classname)) {
// Special case: all related exceptions are grouped into a single file
if (preg_match("/^({$class['base']}_(?:.*_))Exception/", $classname, $matches = array())) {
require_once($class['base_dir_prefix'] . preg_replace('/_/', '/', $matches[1]) . 'Exceptions.class.php');
return;
}
if ($parent_class->isInterface()) {
$class_definition .= 'interface ';
} else {
if ($parent_class->isAbstract()) {
$class_definition .= 'abstract ';
}
$class_definition .= 'class ';
// Replace any underscores with directory separators
$filename = $class['base_dir_prefix'] . preg_replace('/_/', '/', $classname) . '.class.php';
// If this file exists, load it
if (file_exists($filename)) {
require_once $filename;
return;
}
$class_definition .= "{$classname} extends {$parent_classname} {};";
} elseif ($class['subclass'] && preg_match("/^{$class['subclass']}_/", $classname)) {
// Sihnon_ classes subclass the SihnonFramework_ classes.
// If a subclass doesn't exist, create it on the fly
eval($class_definition);
// Special case: all related exceptions are grouped into a single file
if (preg_match("/^({$class['subclass']}_(?:.*_))Exception/", $classname, $matches = array())) {
require_once($class['subclass_dir_prefix'] . preg_replace('/_/', '/', $matches[1]) . 'Exceptions.class.php');
return;
}
return;
// Replace any underscores with directory separators
$filename = $class['subclass_dir_prefix'] . preg_replace('/_/', '/', $classname) . '.class.php';
// If this file exists, load it
if (file_exists($filename)) {
require_once $filename;
return;
} else {
// Create this class to extend the Framework parent
$parent_classname = preg_replace("/^{$class['subclass']}_/", "{$class['base']}_", $classname);
// Determine if the classname represents a class or an interface
$parent_class = new ReflectionClass($parent_classname);
$class_definition = '';
if ($parent_class->isFinal()) {
// Final classes cannot be extended
return;
}
if ($parent_class->isInterface()) {
$class_definition .= 'interface ';
} else {
if ($parent_class->isAbstract()) {
$class_definition .= 'abstract ';
}
$class_definition .= 'class ';
}
$class_definition .= "{$classname} extends {$parent_classname} {};";
eval($class_definition);
return;
}
}
}
}
/**
* Adds additional class names to the autoloader
*
* The base name is the prefix of all classes in the base tree. The subclass name is the prefix of all classes from
* another tree in which the base classes can be extended. For example, the SihnonFramework and Sihnon class trees.
*
* For the base and subclasses, the dir prefix is the top-level directory which contains all the class files.
*
* If there are no subclasses, the latter two parameters can be left as null, or unspecified.
*
* @param unknown_type $base
* @param unknown_type $base_dir_prefix
* @param unknown_type $subclass
* @param unknown_type $subclass_dir_prefix
*/
public static function registerAutoloadClasses($base, $base_dir_prefix, $subclass = null, $subclass_dir_prefix = null) {
self::$autoload_classes[] = array(
'base' => $base,
'base_dir_prefix' => $base_dir_prefix,
'subclass' => $subclass,
'subclass_dir_prefix' => $subclass_dir_prefix,
);
}
/**
* Throws an exception if the requested name has not been defined.
*