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<?php
require_once 'PradoBase.php';
/**
* Extended Prado class which allows to redefine application instances and aliases.
*/
class Prado extends PradoBase {
private static $_application = null;
private static $_aliases = array('System'=>PRADO_DIR);
private static $_usings=array();
public static function setApplication($application) {
self::$_application = $application;
}
public static function getApplication() {
return self::$_application;
}
public static function using($namespace,$checkClassExistence=true)
{
if(isset(self::$_usings[$namespace]) || class_exists($namespace,false))
return;
if(($pos=strrpos($namespace,'.'))===false) // a class name
{
try
{
include_once($namespace.self::CLASS_FILE_EXT);
}
catch(Exception $e)
{
if(!class_exists($namespace,false))
throw new TInvalidOperationException('prado_component_unknown',$namespace);
else
throw $e;
}
}
else if(($path=self::getPathOfNamespace($namespace,self::CLASS_FILE_EXT))!==null)
{
$className=substr($namespace,$pos+1);
if($className==='*') // a directory
{
self::$_usings[$namespace]=$path;
set_include_path(get_include_path().PATH_SEPARATOR.$path);
}
else // a file
{
self::$_usings[$namespace]=$path;
if(!class_exists($className,false))
{
try
{
include_once($path);
}
catch(Exception $e)
{
if(!class_exists($className,false))
throw new TInvalidOperationException('prado_component_unknown',$className);
else
throw $e;
}
}
}
}
else
throw new TInvalidDataValueException('prado_using_invalid',$namespace);
}
public static function getPathOfNamespace($namespace,$ext='')
{
if(isset(self::$_usings[$namespace]))
return self::$_usings[$namespace];
else if(isset(self::$_aliases[$namespace]))
return self::$_aliases[$namespace];
else
{
$segs=explode('.',$namespace);
$alias=array_shift($segs);
if(($file=array_pop($segs))!==null && ($root=self::getPathOfAlias($alias))!==null)
return rtrim($root.'/'.implode('/',$segs),'/').(($file==='*')?'':'/'.$file.$ext);
else
return null;
}
}
public static function getPathOfAlias($alias)
{
return isset(self::$_aliases[$alias])?self::$_aliases[$alias]:null;
}
protected static function getPathAliases()
{
return self::$_aliases;
}
public static function setPathOfAlias($alias, $path) {
if(($rp=realpath($path))!==false && is_dir($rp)) {
if(strpos($alias,'.') === false)
self::$_aliases[$alias] = $rp;
else
throw new TInvalidDataValueException('prado_aliasname_invalid',$alias);
}
else
throw new TInvalidDataValueException('prado_alias_invalid',$alias,$path);
}
/*public static function setPathOfAlias($alias, $path) {
if(($rp=realpath($path)) !== false && is_dir($rp)) {
if(strpos($alias,'.') === false) {
self::$_aliases[$alias]=$rp;
} else {
throw new TInvalidDataValueException('prado_aliasname_invalid', $alias);
}
} else {
throw new TInvalidDataValueException('prado_alias_invalid', $alias, $path);
}
}*/
public static function getUserLanguages()
{
$languages=null;
// Recompute $languages each times it's called for unit tests
/*if($languages===null)
{*/
if(!isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
$languages[0]='en';
else
{
$languages=array();
foreach(explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']) as $language)
{
$array=explode(';q=',trim($language));
$languages[trim($array[0])]=isset($array[1])?(float)$array[1]:1.0;
}
arsort($languages);
$languages=array_keys($languages);
if(empty($languages))
$languages[0]='en';
}
/*}*/
return $languages;
}
}
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