public static function import($alias, $forceInclude = false)
{
if (isset(self::$_imports[$alias])) {
// previously imported
return self::$_imports[$alias];
}
if (class_exists($alias, false) || interface_exists($alias, false)) {
return self::$_imports[$alias] = $alias;
}
if (($pos = strrpos($alias, '\\')) !== false) {
$namespace = str_replace('\\', '.', ltrim(substr($alias, 0, $pos), '\\'));
if (($path = self::getPathOfAlias($namespace)) !== false) {
$classFile = $path . DIRECTORY_SEPARATOR . substr($alias, $pos + 1) . '.php';
if ($forceInclude) {
if (is_file($classFile)) {
require $classFile;
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing PHP file and the file is readable.', array('{alias}' => $alias)));
}
self::$_imports[$alias] = $alias;
} else {
self::$classMap[$alias] = $classFile;
}
return $alias;
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing directory.', array('{alias}' => $namespace)));
}
}
if (($pos = strrpos($alias, '.')) === false) {
if ($forceInclude && self::autoload($alias)) {
self::$_imports[$alias] = $alias;
}
return $alias;
}
$className = (string) substr($alias, $pos + 1);
$isClass = $className !== '*';
if ($isClass && (class_exists($className, false) || interface_exists($className, false))) {
return self::$_imports[$alias] = $className;
}
if (($path = self::getPathOfAlias($alias)) !== false) {
if ($isClass) {
if ($forceInclude) {
if (is_file($path . '.php')) {
require $path . '.php';
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing PHP file and the file is readable.', array('{alias}' => $alias)));
}
self::$_imports[$alias] = $className;
} else {
self::$classMap[$className] = $path . '.php';
}
return $className;
} else {
if (self::$_includePaths === null) {
self::$_includePaths = array_unique(explode(PATH_SEPARATOR, get_include_path()));
if (($pos = array_search('.', self::$_includePaths, true)) !== false) {
unset(self::$_includePaths[$pos]);
}
}
array_unshift(self::$_includePaths, $path);
if (self::$enableIncludePath && set_include_path('.' . PATH_SEPARATOR . implode(PATH_SEPARATOR, self::$_includePaths)) === false) {
self::$enableIncludePath = false;
}
return self::$_imports[$alias] = $path;
}
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing directory or file.', array('{alias}' => $alias)));
}
}
public static function import($alias, $forceInclude = false)
{
if (isset(self::$_imports[$alias])) {
//是否已经存在路径
return self::$_imports[$alias];
}
if (class_exists($alias, false) || interface_exists($alias, false)) {
//类是否已经定义,针对如urlManager这样的已定义于$_coreClasses[]的类
return self::$_imports[$alias] = $alias;
}
if (($pos = strrpos($alias, '.')) === false) {
// try to autoload the class with an autoloader if $forceInclude is true
if ($forceInclude && (Yii::autoload($alias, true) || class_exists($alias, true))) {
self::$_imports[$alias] = $alias;
}
return $alias;
}
$className = (string) substr($alias, $pos + 1);
$isClass = $className !== '*';
//是否为路径+类名
if ($isClass && (class_exists($className, false) || interface_exists($className, false))) {
return self::$_imports[$alias] = $className;
}
//获取真实路径
if (($path = self::getPathOfAlias($alias)) !== false) {
//是否以*结尾，如application.utils.*
if ($isClass) {
if ($forceInclude) {
if (is_file($path . '.php')) {
require $path . '.php';
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing PHP file and the file is readable.', array('{alias}' => $alias)));
}
self::$_imports[$alias] = $className;
} else {
self::$classMap[$className] = $path . '.php';
}
return $className;
} else {
if (self::$_includePaths === null) {
self::$_includePaths = array_unique(explode(PATH_SEPARATOR, get_include_path()));
if (($pos = array_search('.', self::$_includePaths, true)) !== false) {
unset(self::$_includePaths[$pos]);
}
}
array_unshift(self::$_includePaths, $path);
if (self::$enableIncludePath && set_include_path('.' . PATH_SEPARATOR . implode(PATH_SEPARATOR, self::$_includePaths)) === false) {
self::$enableIncludePath = false;
}
return self::$_imports[$alias] = $path;
}
}
}
/**
* Imports the definition of a class or a directory of class files.
*
* Path aliases are used to refer to the class file or directory being imported.
* If importing a path alias ending with '.*', the alias is considered as a directory
* which will be added to the PHP include paths; Otherwise, the alias is translated
* to the path of a class file which is included when needed.
*
* For example, importing 'system.web.*' will add the 'web' directory of the framework
* to the PHP include paths; while importing 'system.web.CController' will include
* the class file 'web/CController.php' when needed.
*
* The same alias can be imported multiple times, but only the first time is effective.
*
* @param string path alias to be imported
* @param boolean whether to include the class file immediately. If false, the class file
* will be included only when the class is being used.
* @return string the class name or the directory that this alias refers to
* @throws CException if the alias is invalid
*/
public static function import($alias, $forceInclude = false)
{
if (isset(self::$_imports[$alias])) {
// previously imported
return self::$_imports[$alias];
}
if (class_exists($alias, false) || interface_exists($alias, false)) {
return self::$_imports[$alias] = $alias;
}
if (($pos = strrpos($alias, '.')) === false) {
if ($forceInclude && self::autoload($alias)) {
self::$_imports[$alias] = $alias;
}
return $alias;
}
if (($className = (string) substr($alias, $pos + 1)) !== '*' && (class_exists($className, false) || interface_exists($className, false))) {
return self::$_imports[$alias] = $className;
}
if (($path = self::getPathOfAlias($alias)) !== false) {
if ($className !== '*') {
if ($forceInclude) {
require $path . '.php';
self::$_imports[$alias] = $className;
} else {
self::$_classes[$className] = $path . '.php';
}
return $className;
} else {
if (self::$_includePaths === null) {
self::$_includePaths = array_unique(explode(PATH_SEPARATOR, get_include_path()));
if (($pos = array_search('.', self::$_includePaths, true)) !== false) {
unset(self::$_includePaths[$pos]);
}
}
array_unshift(self::$_includePaths, $path);
if (set_include_path('.' . PATH_SEPARATOR . implode(PATH_SEPARATOR, self::$_includePaths)) === false) {
throw new CException(Yii::t('yii', 'Unable to import "{alias}". Please check your server configuration to make sure you are allowed to change PHP include_path.', array('{alias}' => $alias)));
}
return self::$_imports[$alias] = $path;
}
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing directory or file.', array('{alias}' => $alias)));
}
}
/**
* Imports the definition of a class or a directory of class files.
*
* Path aliases are used to refer to the class file or directory being imported.
* If importing a path alias ending with '.*', the alias is considered as a directory
* which will be added to the PHP include paths; Otherwise, the alias is translated
* to the path of a class file which is included when needed.
*
* For example, importing 'system.web.*' will add the 'web' directory of the framework
* to the PHP include paths; while importing 'system.web.CController' will include
* the class file 'web/CController.php' when needed.
*
* The same alias can be imported multiple times, but only the first time is effective.
*
* @param string path alias to be imported
* @param boolean whether to include the class file immediately. If false, the class file
* will be included only when the class is being used.
* @return string the class name or the directory that this alias refers to
* @throws CException if the alias is invalid
*/
public static function import($alias, $forceInclude = false)
{
if (isset(self::$_imports[$alias])) {
// previously imported
return self::$_imports[$alias];
}
if (class_exists($alias, false) || interface_exists($alias, false)) {
return self::$_imports[$alias] = $alias;
}
if (isset(self::$_coreClasses[$alias]) || ($pos = strrpos($alias, '.')) === false) {
self::$_imports[$alias] = $alias;
if ($forceInclude) {
if (isset(self::$_coreClasses[$alias])) {
// a core class
require YII_PATH . self::$_coreClasses[$alias];
} else {
require $alias . '.php';
}
}
return $alias;
}
if (($className = (string) substr($alias, $pos + 1)) !== '*' && (class_exists($className, false) || interface_exists($className, false))) {
return self::$_imports[$alias] = $className;
}
if (($path = self::getPathOfAlias($alias)) !== false) {
if ($className !== '*') {
self::$_imports[$alias] = $className;
if ($forceInclude) {
require $path . '.php';
} else {
self::$_classes[$className] = $path . '.php';
}
return $className;
} else {
if (self::$_includePaths === null) {
self::$_includePaths = array_unique(explode(PATH_SEPARATOR, get_include_path()));
if (($pos = array_search('.', self::$_includePaths, true)) !== false) {
unset(self::$_includePaths[$pos]);
}
}
array_unshift(self::$_includePaths, $path);
set_include_path('.' . PATH_SEPARATOR . implode(PATH_SEPARATOR, self::$_includePaths));
return self::$_imports[$alias] = $path;
}
} else {
throw new CException(Yii::t('yii', 'Alias "{alias}" is invalid. Make sure it points to an existing directory or file.', array('{alias}' => $alias)));
}
}
