1 files changed, 632 insertions, 632 deletions
diff --git a/framework/I18N/core/CultureInfo.php b/framework/I18N/core/CultureInfo.php
index 18aae74d..799ccdb4 100644
--- a/framework/I18N/core/CultureInfo.php
+++ b/framework/I18N/core/CultureInfo.php
@@ -1,632 +1,632 @@
-<?php
-
-/**
- * CultureInfo class file.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the BSD License.
- *
- * Copyright(c) 2004 by Qiang Xue. All rights reserved.
- *
- * To contact the author write to {@link mailto:qiang.xue@gmail.com Qiang Xue}
- * The latest version of PRADO can be obtained from:
- * {@link http://prado.sourceforge.net/}
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id$
- * @package System.I18N.core
- */
-
-/**
- * CultureInfo class.
- *
- * Represents information about a specific culture including the
- * names of the culture, the calendar used, as well as access to
- * culture-specific objects that provide methods for common operations,
- * such as formatting dates, numbers, and currency.
- *
- * The CultureInfo class holds culture-specific information, such as the
- * associated language, sublanguage, country/region, calendar, and cultural
- * conventions. This class also provides access to culture-specific
- * instances of DateTimeFormatInfo and NumberFormatInfo. These objects
- * contain the information required for culture-specific operations,
- * such as formatting dates, numbers and currency.
- *
- * The culture names follow the format "<languagecode>_<country/regioncode>",
- * where <languagecode> is a lowercase two-letter code derived from ISO 639
- * codes. You can find a full list of the ISO-639 codes at
- * http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt
- *
- * The <country/regioncode2> is an uppercase two-letter code derived from
- * ISO 3166. A copy of ISO-3166 can be found at
- * http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html
- *
- * For example, Australian English is "en_AU".
- *
- * @author Xiang Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id$
- * @package System.I18N.core
- */
-class CultureInfo
-{
-	/**
-	 * ICU data filename extension.
-	 * @var string
-	 */
-	private $dataFileExt = '.dat';
-
-	/**
-	 * The ICU data array.
-	 * @var array
-	 */
-	private $data = array();
-
-	/**
-	 * The current culture.
-	 * @var string
-	 */
-	private $culture;
-
-	/**
-	 * Directory where the ICU data is stored.
-	 * @var string
-	 */
-	private $dataDir;
-
-	/**
-	 * A list of ICU date files loaded.
-	 * @var array
-	 */
-	private $dataFiles = array();
-
-	/**
-	 * The current date time format info.
-	 * @var DateTimeFormatInfo
-	 */
-	private $dateTimeFormat;
-
-	/**
-	 * The current number format info.
-	 * @var NumberFormatInfo
-	 */
-	private $numberFormat;
-
-	/**
-	 * A list of properties that are accessable/writable.
-	 * @var array
-	 */
-	protected $properties = array();
-
-	/**
-	 * Culture type, all.
-	 * @see getCultures()
-	 * @var int
-	 */
-	const ALL = 0;
-
-	/**
-	 * Culture type, neutral.
-	 * @see getCultures()
-	 * @var int
-	 */
-	const NEUTRAL = 1;
-
-	/**
-	 * Culture type, specific.
-	 * @see getCultures()
-	 * @var int
-	 */
-	const SPECIFIC = 2;
-
-	/**
-	 * Display the culture name.
-	 * @return string the culture name.
-	 * @see getName()
-	 */
-	function __toString()
-	{
-		return $this->getName();
-	}
-
-
-	/**
-	 * Allow functions that begins with 'set' to be called directly
-	 * as an attribute/property to retrieve the value.
-	 * @return mixed
-	 */
-	function __get($name)
-	{
-		$getProperty = 'get'.$name;
-		if(in_array($getProperty, $this->properties))
-			return $this->$getProperty();
-		else
-			throw new Exception('Property '.$name.' does not exists.');
-	}
-
-	/**
-	 * Allow functions that begins with 'set' to be called directly
-	 * as an attribute/property to set the value.
-	 */
-	function __set($name, $value)
-	{
-		$setProperty = 'set'.$name;
-		if(in_array($setProperty, $this->properties))
-			$this->$setProperty($value);
-		else
-			throw new Exception('Property '.$name.' can not be set.');
-	}
-
-
-	/**
-	 * Initializes a new instance of the CultureInfo class based on the
-	 * culture specified by name. E.g. <code>new CultureInfo('en_AU');</cdoe>
-	 * The culture indentifier must be of the form
-	 * "language_(country/region/variant)".
-	 * @param string a culture name, e.g. "en_AU".
-	 * @return return new CultureInfo.
-	 */
-	function __construct($culture='en')
-	{
-		$this->properties = get_class_methods($this);
-
-		if(empty($culture))
-			$culture = 'en';
-
-		$this->dataDir = $this->dataDir();
-		$this->dataFileExt = $this->fileExt();
-
-		$this->setCulture($culture);
-
-		$this->loadCultureData('root');
-		$this->loadCultureData($culture);
-	}
-
-	/**
-	 * Get the default directory for the ICU data.
-	 * The default is the "data" directory for this class.
-	 * @return string directory containing the ICU data.
-	 */
-	protected static function dataDir()
-	{
-		return dirname(__FILE__).'/data/';
-	}
-
-	/**
-	 * Get the filename extension for ICU data. Default is ".dat".
-	 * @return string filename extension for ICU data.
-	 */
-	protected static function fileExt()
-	{
-		return '.dat';
-	}
-
-	/**
-	* Gets the CultureInfo that for this culture string
-	* @return CultureInfo invariant culture info is "en".
-	*/
-	public static function getInstance($culture)
-	{
-		static $instances = array();
-		if(!isset($instances[$culture]))
-			$instances[$culture] = new CultureInfo($culture);
-		return $instances[$culture];
-	}
-
-	/**
-	 * Determine if a given culture is valid. Simply checks that the
-	 * culture data exists.
-	 * @param string a culture
-	 * @return boolean true if valid, false otherwise.
-	 */
-	public static function validCulture($culture)
-	{
-		if(preg_match('/^[_\\w]+$/', $culture))
-			return is_file(self::dataDir().$culture.self::fileExt());
-
-		return false;
-	}
-
-	/**
-	 * Set the culture for the current instance. The culture indentifier
-	 * must be of the form "<language>_(country/region)".
-	 * @param string culture identifier, e.g. "fr_FR_EURO".
-	 */
-	protected function setCulture($culture)
-	{
-		if(!empty($culture))
-		{
-			if (!preg_match('/^[_\\w]+$/', $culture))
-				throw new Exception('Invalid culture supplied: ' . $culture);
-		}
-
-		$this->culture = $culture;
-	}
-
-	/**
-	 * Load the ICU culture data for the specific culture identifier.
-	 * @param string the culture identifier.
-	 */
-	protected function loadCultureData($culture)
-	{
-		$file_parts = explode('_',$culture);
-		$current_part = $file_parts[0];
-
-		$files = array($current_part);
-
-		for($i = 1, $k = count($file_parts); $i < $k; ++$i)
-		{
-			$current_part .= '_'.$file_parts[$i];
-			$files[] = $current_part;
-		}
-
-		foreach($files as $file)
-		{
-			$filename = $this->dataDir.$file.$this->dataFileExt;
-
-			if(is_file($filename) == false)
-				throw new Exception('Data file for "'.$file.'" was not found.');
-
-			if(in_array($filename, $this->dataFiles) === false)
-			{
-				array_unshift($this->dataFiles, $file);
-
-				$data = &$this->getData($filename);
-				$this->data[$file] = &$data;
-
-				if(isset($data['__ALIAS']))
-					$this->loadCultureData($data['__ALIAS'][0]);
-				unset($data);
-			}
-		}
-	}
-
-	/**
-	 * Get the data by unserializing the ICU data from disk.
-	 * The data files are cached in a static variable inside
-	 * this function.
-	 * @param string the ICU data filename
-	 * @return array ICU data
-	 */
-	protected function &getData($filename)
-	{
-		static $data = array();
-		static $files = array();
-
-		if(!in_array($filename, $files))
-		{
-			$data[$filename] = unserialize(file_get_contents($filename));
-			$files[] = $filename;
-		}
-
-		return $data[$filename];
-	}
-
-	/**
-	 * Find the specific ICU data information from the data.
-	 * The path to the specific ICU data is separated with a slash "/".
-	 * E.g. To find the default calendar used by the culture, the path
-	 * "calendar/default" will return the corresponding default calendar.
-	 * Use merge=true to return the ICU including the parent culture.
-	 * E.g. The currency data for a variant, say "en_AU" contains one
-	 * entry, the currency for AUD, the other currency data are stored
-	 * in the "en" data file. Thus to retrieve all the data regarding
-	 * currency for "en_AU", you need to use findInfo("Currencies,true);.
-	 * @param string the data you want to find.
-	 * @param boolean merge the data from its parents.
-	 * @return mixed the specific ICU data.
-	 */
-	protected function findInfo($path='/', $merge=false)
-	{
-		$result = array();
-		foreach($this->dataFiles as $section)
-		{
-			$info = $this->searchArray($this->data[$section], $path);
-
-			if($info)
-			{
-				if($merge)
-					$result = array_merge($info,$result);
-				else
-					return $info;
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * Search the array for a specific value using a path separated using
-	 * slash "/" separated path. e.g to find $info['hello']['world'],
-	 * the path "hello/world" will return the corresponding value.
-	 * @param array the array for search
-	 * @param string slash "/" separated array path.
-	 * @return mixed the value array using the path
-	 */
-	private function searchArray($info, $path='/')
-	{
-		$index = explode('/',$path);
-
-		$array = $info;
-
-		for($i = 0, $k = count($index); $i < $k; ++$i)
-		{
-			$value = $index[$i];
-			if($i < $k-1 && isset($array[$value]))
-				$array = $array[$value];
-			else if ($i == $k-1 && isset($array[$value]))
-				return $array[$value];
-		}
-	}
-
-	/**
-	 * Gets the culture name in the format
-	 * "<languagecode2>_(country/regioncode2)".
-	 * @return string culture name.
-	 */
-	function getName()
-	{
-		return $this->culture;
-	}
-
-	/**
-	 * Gets the DateTimeFormatInfo that defines the culturally appropriate
-	 * format of displaying dates and times.
-	 * @return DateTimeFormatInfo date time format information for the culture.
-	 */
-	function getDateTimeFormat()
-	{
-		if($this->dateTimeFormat === null)
-		{
-			$calendar = $this->getCalendar();
-			$info = $this->findInfo("calendar/{$calendar}", true);
-			$this->setDateTimeFormat(new DateTimeFormatInfo($info));
-		}
-
-		return $this->dateTimeFormat;
-	}
-
-	/**
-	 * Set the date time format information.
-	 * @param DateTimeFormatInfo the new date time format info.
-	 */
-	function setDateTimeFormat($dateTimeFormat)
-	{
-		$this->dateTimeFormat = $dateTimeFormat;
-	}
-
-	/**
-	 * Gets the default calendar used by the culture, e.g. "gregorian".
-	 * @return string the default calendar.
-	 */
-	function getCalendar()
-	{
-		$info = $this->findInfo('calendar/default');
-		return $info[0];
-	}
-
-	/**
-	 * Gets the culture name in the language that the culture is set
-	 * to display. Returns <code>array('Language','Country');</code>
-	 * 'Country' is omitted if the culture is neutral.
-	 * @return array array with language and country as elements, localized.
-	 */
-	function getNativeName()
-	{
-		$lang = substr($this->culture,0,2);
-		$reg = substr($this->culture,3,2);
-		$language = $this->findInfo("Languages/{$lang}");
-		$region = $this->findInfo("Countries/{$reg}");
-		if($region)
-			return $language[0].' ('.$region[0].')';
-		else
-			return $language[0];
-	}
-
-	/**
-	 * Gets the culture name in English.
-	 * Returns <code>array('Language','Country');</code>
-	 * 'Country' is omitted if the culture is neutral.
-	 * @return string language (country), it may locale code string if english name does not exist.
-	 */
-	function getEnglishName()
-	{
-		$lang = substr($this->culture,0,2);
-		$reg = substr($this->culture,3,2);
-		$culture = $this->getInvariantCulture();
-
-		$language = $culture->findInfo("Languages/{$lang}");
-		if(count($language) == 0)
-			return $this->culture;
-
-		$region = $culture->findInfo("Countries/{$reg}");
-		if($region)
-			return $language[0].' ('.$region[0].')';
-		else
-			return $language[0];
-	}
-
-	/**
-	 * Gets the CultureInfo that is culture-independent (invariant).
-	 * Any changes to the invariant culture affects all other
-	 * instances of the invariant culture.
-	 * The invariant culture is assumed to be "en";
-	 * @return CultureInfo invariant culture info is "en".
-	 */
-	static function getInvariantCulture()
-	{
-		static $invariant;
-		if($invariant === null)
-			$invariant = new CultureInfo();
-		return $invariant;
-	}
-
-	/**
-	 * Gets a value indicating whether the current CultureInfo
-	 * represents a neutral culture. Returns true if the culture
-	 * only contains two characters.
-	 * @return boolean true if culture is neutral, false otherwise.
-	 */
-	function getIsNeutralCulture()
-	{
-		return strlen($this->culture) == 2;
-	}
-
-	/**
-	 * Gets the NumberFormatInfo that defines the culturally appropriate
-	 * format of displaying numbers, currency, and percentage.
-	 * @return NumberFormatInfo the number format info for current culture.
-	 */
-	function getNumberFormat()
-	{
-		if($this->numberFormat === null)
-		{
-			$elements = $this->findInfo('NumberElements');
-			$patterns = $this->findInfo('NumberPatterns');
-			$currencies = $this->getCurrencies();
-			$data = array(	'NumberElements'=>$elements,
-							'NumberPatterns'=>$patterns,
-							'Currencies' => $currencies);
-
-			$this->setNumberFormat(new NumberFormatInfo($data));
-		}
-		return $this->numberFormat;
-	}
-
-	/**
-	 * Set the number format information.
-	 * @param NumberFormatInfo the new number format info.
-	 */
-	function setNumberFormat($numberFormat)
-	{
-		$this->numberFormat = $numberFormat;
-	}
-
-	/**
-	 * Gets the CultureInfo that represents the parent culture of the
-	 * current CultureInfo
-	 * @return CultureInfo parent culture information.
-	 */
-	function getParent()
-	{
-		if(strlen($this->culture) == 2)
-			return $this->getInvariantCulture();
-
-		$lang = substr($this->culture,0,2);
-			return new CultureInfo($lang);
-	}
-
-	/**
-	 * Gets the list of supported cultures filtered by the specified
-	 * culture type. This is an EXPENSIVE function, it needs to traverse
-	 * a list of ICU files in the data directory.
-	 * This function can be called statically.
-	 * @param int culture type, CultureInfo::ALL, CultureInfo::NEUTRAL
-	 * or CultureInfo::SPECIFIC.
-	 * @return array list of culture information available.
-	 */
-	static function getCultures($type=CultureInfo::ALL)
-	{
-		$dataDir = CultureInfo::dataDir();
-		$dataExt = CultureInfo::fileExt();
-		$dir = dir($dataDir);
-
-		$neutral = array();
-		$specific = array();
-
-		while (false !== ($entry = $dir->read()))
-		{
-			if(is_file($dataDir.$entry)
-				&& substr($entry,-4) == $dataExt
-				&& $entry != 'root'.$dataExt)
-			{
-				$culture = substr($entry,0,-4);
-				if(strlen($culture) == 2)
-					$neutral[] = $culture;
-				else
-					$specific[] = $culture;
-			}
-		}
-		$dir->close();
-
-		switch($type)
-		{
-			case CultureInfo::ALL :
-				$all = 	array_merge($neutral, $specific);
-				sort($all);
-				return $all;
-				break;
-			case CultureInfo::NEUTRAL :
-				return $neutral;
-				break;
-			case CultureInfo::SPECIFIC :
-				return $specific;
-				break;
-		}
-	}
-
-	/**
-	 * Simplify a single element array into its own value.
-	 * E.g. <code>array(0 => array('hello'), 1 => 'world');</code>
-	 * becomes <code>array(0 => 'hello', 1 => 'world');</code>
-	 * @param array with single elements arrays
-	 * @return array simplified array.
-	 */
-	private function simplify($array)
-	{
-		for($i = 0, $k = count($array); $i<$k; ++$i)
-		{
-			$key = key($array);
-			if(is_array($array[$key])
-				&& count($array[$key]) == 1)
-				$array[$key] = $array[$key][0];
-			next($array);
-		}
-		return $array;
-	}
-
-	/**
-	 * Get a list of countries in the language of the localized version.
-	 * @return array a list of localized country names.
-	 */
-	function getCountries()
-	{
-		return $this->simplify($this->findInfo('Countries',true));
-	}
-
-	/**
-	 * Get a list of currencies in the language of the localized version.
-	 * @return array a list of localized currencies.
-	 */
-	function getCurrencies()
-	{
-		return $this->findInfo('Currencies',true);
-	}
-
-	/**
-	 * Get a list of languages in the language of the localized version.
-	 * @return array list of localized language names.
-	 */
-	function getLanguages()
-	{
-		return $this->simplify($this->findInfo('Languages',true));
-	}
-
-	/**
-	 * Get a list of scripts in the language of the localized version.
-	 * @return array list of localized script names.
-	 */
-	function getScripts()
-	{
-		return $this->simplify($this->findInfo('Scripts',true));
-	}
-
-	/**
-	 * Get a list of timezones in the language of the localized version.
-	 * @return array list of localized timezones.
-	 */
-	function getTimeZones()
-	{
-		return $this->simplify($this->findInfo('zoneStrings',true));
-	}
-}
-
+<?php
+
+/**
+ * CultureInfo class file.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the BSD License.
+ *
+ * Copyright(c) 2004 by Qiang Xue. All rights reserved.
+ *
+ * To contact the author write to {@link mailto:qiang.xue@gmail.com Qiang Xue}
+ * The latest version of PRADO can be obtained from:
+ * {@link http://prado.sourceforge.net/}
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @version $Id$
+ * @package System.I18N.core
+ */
+
+/**
+ * CultureInfo class.
+ *
+ * Represents information about a specific culture including the
+ * names of the culture, the calendar used, as well as access to
+ * culture-specific objects that provide methods for common operations,
+ * such as formatting dates, numbers, and currency.
+ *
+ * The CultureInfo class holds culture-specific information, such as the
+ * associated language, sublanguage, country/region, calendar, and cultural
+ * conventions. This class also provides access to culture-specific
+ * instances of DateTimeFormatInfo and NumberFormatInfo. These objects
+ * contain the information required for culture-specific operations,
+ * such as formatting dates, numbers and currency.
+ *
+ * The culture names follow the format "<languagecode>_<country/regioncode>",
+ * where <languagecode> is a lowercase two-letter code derived from ISO 639
+ * codes. You can find a full list of the ISO-639 codes at
+ * http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt
+ *
+ * The <country/regioncode2> is an uppercase two-letter code derived from
+ * ISO 3166. A copy of ISO-3166 can be found at
+ * http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html
+ *
+ * For example, Australian English is "en_AU".
+ *
+ * @author Xiang Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @version $Id$
+ * @package System.I18N.core
+ */
+class CultureInfo
+{
+	/**
+	 * ICU data filename extension.
+	 * @var string
+	 */
+	private $dataFileExt = '.dat';
+
+	/**
+	 * The ICU data array.
+	 * @var array
+	 */
+	private $data = array();
+
+	/**
+	 * The current culture.
+	 * @var string
+	 */
+	private $culture;
+
+	/**
+	 * Directory where the ICU data is stored.
+	 * @var string
+	 */
+	private $dataDir;
+
+	/**
+	 * A list of ICU date files loaded.
+	 * @var array
+	 */
+	private $dataFiles = array();
+
+	/**
+	 * The current date time format info.
+	 * @var DateTimeFormatInfo
+	 */
+	private $dateTimeFormat;
+
+	/**
+	 * The current number format info.
+	 * @var NumberFormatInfo
+	 */
+	private $numberFormat;
+
+	/**
+	 * A list of properties that are accessable/writable.
+	 * @var array
+	 */
+	protected $properties = array();
+
+	/**
+	 * Culture type, all.
+	 * @see getCultures()
+	 * @var int
+	 */
+	const ALL = 0;
+
+	/**
+	 * Culture type, neutral.
+	 * @see getCultures()
+	 * @var int
+	 */
+	const NEUTRAL = 1;
+
+	/**
+	 * Culture type, specific.
+	 * @see getCultures()
+	 * @var int
+	 */
+	const SPECIFIC = 2;
+
+	/**
+	 * Display the culture name.
+	 * @return string the culture name.
+	 * @see getName()
+	 */
+	function __toString()
+	{
+		return $this->getName();
+	}
+
+
+	/**
+	 * Allow functions that begins with 'set' to be called directly
+	 * as an attribute/property to retrieve the value.
+	 * @return mixed
+	 */
+	function __get($name)
+	{
+		$getProperty = 'get'.$name;
+		if(in_array($getProperty, $this->properties))
+			return $this->$getProperty();
+		else
+			throw new Exception('Property '.$name.' does not exists.');
+	}
+
+	/**
+	 * Allow functions that begins with 'set' to be called directly
+	 * as an attribute/property to set the value.
+	 */
+	function __set($name, $value)
+	{
+		$setProperty = 'set'.$name;
+		if(in_array($setProperty, $this->properties))
+			$this->$setProperty($value);
+		else
+			throw new Exception('Property '.$name.' can not be set.');
+	}
+
+
+	/**
+	 * Initializes a new instance of the CultureInfo class based on the
+	 * culture specified by name. E.g. <code>new CultureInfo('en_AU');</cdoe>
+	 * The culture indentifier must be of the form
+	 * "language_(country/region/variant)".
+	 * @param string a culture name, e.g. "en_AU".
+	 * @return return new CultureInfo.
+	 */
+	function __construct($culture='en')
+	{
+		$this->properties = get_class_methods($this);
+
+		if(empty($culture))
+			$culture = 'en';
+
+		$this->dataDir = $this->dataDir();
+		$this->dataFileExt = $this->fileExt();
+
+		$this->setCulture($culture);
+
+		$this->loadCultureData('root');
+		$this->loadCultureData($culture);
+	}
+
+	/**
+	 * Get the default directory for the ICU data.
+	 * The default is the "data" directory for this class.
+	 * @return string directory containing the ICU data.
+	 */
+	protected static function dataDir()
+	{
+		return dirname(__FILE__).'/data/';
+	}
+
+	/**
+	 * Get the filename extension for ICU data. Default is ".dat".
+	 * @return string filename extension for ICU data.
+	 */
+	protected static function fileExt()
+	{
+		return '.dat';
+	}
+
+	/**
+	* Gets the CultureInfo that for this culture string
+	* @return CultureInfo invariant culture info is "en".
+	*/
+	public static function getInstance($culture)
+	{
+		static $instances = array();
+		if(!isset($instances[$culture]))
+			$instances[$culture] = new CultureInfo($culture);
+		return $instances[$culture];
+	}
+
+	/**
+	 * Determine if a given culture is valid. Simply checks that the
+	 * culture data exists.
+	 * @param string a culture
+	 * @return boolean true if valid, false otherwise.
+	 */
+	public static function validCulture($culture)
+	{
+		if(preg_match('/^[_\\w]+$/', $culture))
+			return is_file(self::dataDir().$culture.self::fileExt());
+
+		return false;
+	}
+
+	/**
+	 * Set the culture for the current instance. The culture indentifier
+	 * must be of the form "<language>_(country/region)".
+	 * @param string culture identifier, e.g. "fr_FR_EURO".
+	 */
+	protected function setCulture($culture)
+	{
+		if(!empty($culture))
+		{
+			if (!preg_match('/^[_\\w]+$/', $culture))
+				throw new Exception('Invalid culture supplied: ' . $culture);
+		}
+
+		$this->culture = $culture;
+	}
+
+	/**
+	 * Load the ICU culture data for the specific culture identifier.
+	 * @param string the culture identifier.
+	 */
+	protected function loadCultureData($culture)
+	{
+		$file_parts = explode('_',$culture);
+		$current_part = $file_parts[0];
+
+		$files = array($current_part);
+
+		for($i = 1, $k = count($file_parts); $i < $k; ++$i)
+		{
+			$current_part .= '_'.$file_parts[$i];
+			$files[] = $current_part;
+		}
+
+		foreach($files as $file)
+		{
+			$filename = $this->dataDir.$file.$this->dataFileExt;
+
+			if(is_file($filename) == false)
+				throw new Exception('Data file for "'.$file.'" was not found.');
+
+			if(in_array($filename, $this->dataFiles) === false)
+			{
+				array_unshift($this->dataFiles, $file);
+
+				$data = &$this->getData($filename);
+				$this->data[$file] = &$data;
+
+				if(isset($data['__ALIAS']))
+					$this->loadCultureData($data['__ALIAS'][0]);
+				unset($data);
+			}
+		}
+	}
+
+	/**
+	 * Get the data by unserializing the ICU data from disk.
+	 * The data files are cached in a static variable inside
+	 * this function.
+	 * @param string the ICU data filename
+	 * @return array ICU data
+	 */
+	protected function &getData($filename)
+	{
+		static $data = array();
+		static $files = array();
+
+		if(!in_array($filename, $files))
+		{
+			$data[$filename] = unserialize(file_get_contents($filename));
+			$files[] = $filename;
+		}
+
+		return $data[$filename];
+	}
+
+	/**
+	 * Find the specific ICU data information from the data.
+	 * The path to the specific ICU data is separated with a slash "/".
+	 * E.g. To find the default calendar used by the culture, the path
+	 * "calendar/default" will return the corresponding default calendar.
+	 * Use merge=true to return the ICU including the parent culture.
+	 * E.g. The currency data for a variant, say "en_AU" contains one
+	 * entry, the currency for AUD, the other currency data are stored
+	 * in the "en" data file. Thus to retrieve all the data regarding
+	 * currency for "en_AU", you need to use findInfo("Currencies,true);.
+	 * @param string the data you want to find.
+	 * @param boolean merge the data from its parents.
+	 * @return mixed the specific ICU data.
+	 */
+	protected function findInfo($path='/', $merge=false)
+	{
+		$result = array();
+		foreach($this->dataFiles as $section)
+		{
+			$info = $this->searchArray($this->data[$section], $path);
+
+			if($info)
+			{
+				if($merge)
+					$result = array_merge($info,$result);
+				else
+					return $info;
+			}
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Search the array for a specific value using a path separated using
+	 * slash "/" separated path. e.g to find $info['hello']['world'],
+	 * the path "hello/world" will return the corresponding value.
+	 * @param array the array for search
+	 * @param string slash "/" separated array path.
+	 * @return mixed the value array using the path
+	 */
+	private function searchArray($info, $path='/')
+	{
+		$index = explode('/',$path);
+
+		$array = $info;
+
+		for($i = 0, $k = count($index); $i < $k; ++$i)
+		{
+			$value = $index[$i];
+			if($i < $k-1 && isset($array[$value]))
+				$array = $array[$value];
+			else if ($i == $k-1 && isset($array[$value]))
+				return $array[$value];
+		}
+	}
+
+	/**
+	 * Gets the culture name in the format
+	 * "<languagecode2>_(country/regioncode2)".
+	 * @return string culture name.
+	 */
+	function getName()
+	{
+		return $this->culture;
+	}
+
+	/**
+	 * Gets the DateTimeFormatInfo that defines the culturally appropriate
+	 * format of displaying dates and times.
+	 * @return DateTimeFormatInfo date time format information for the culture.
+	 */
+	function getDateTimeFormat()
+	{
+		if($this->dateTimeFormat === null)
+		{
+			$calendar = $this->getCalendar();
+			$info = $this->findInfo("calendar/{$calendar}", true);
+			$this->setDateTimeFormat(new DateTimeFormatInfo($info));
+		}
+
+		return $this->dateTimeFormat;
+	}
+
+	/**
+	 * Set the date time format information.
+	 * @param DateTimeFormatInfo the new date time format info.
+	 */
+	function setDateTimeFormat($dateTimeFormat)
+	{
+		$this->dateTimeFormat = $dateTimeFormat;
+	}
+
+	/**
+	 * Gets the default calendar used by the culture, e.g. "gregorian".
+	 * @return string the default calendar.
+	 */
+	function getCalendar()
+	{
+		$info = $this->findInfo('calendar/default');
+		return $info[0];
+	}
+
+	/**
+	 * Gets the culture name in the language that the culture is set
+	 * to display. Returns <code>array('Language','Country');</code>
+	 * 'Country' is omitted if the culture is neutral.
+	 * @return array array with language and country as elements, localized.
+	 */
+	function getNativeName()
+	{
+		$lang = substr($this->culture,0,2);
+		$reg = substr($this->culture,3,2);
+		$language = $this->findInfo("Languages/{$lang}");
+		$region = $this->findInfo("Countries/{$reg}");
+		if($region)
+			return $language[0].' ('.$region[0].')';
+		else
+			return $language[0];
+	}
+
+	/**
+	 * Gets the culture name in English.
+	 * Returns <code>array('Language','Country');</code>
+	 * 'Country' is omitted if the culture is neutral.
+	 * @return string language (country), it may locale code string if english name does not exist.
+	 */
+	function getEnglishName()
+	{
+		$lang = substr($this->culture,0,2);
+		$reg = substr($this->culture,3,2);
+		$culture = $this->getInvariantCulture();
+
+		$language = $culture->findInfo("Languages/{$lang}");
+		if(count($language) == 0)
+			return $this->culture;
+
+		$region = $culture->findInfo("Countries/{$reg}");
+		if($region)
+			return $language[0].' ('.$region[0].')';
+		else
+			return $language[0];
+	}
+
+	/**
+	 * Gets the CultureInfo that is culture-independent (invariant).
+	 * Any changes to the invariant culture affects all other
+	 * instances of the invariant culture.
+	 * The invariant culture is assumed to be "en";
+	 * @return CultureInfo invariant culture info is "en".
+	 */
+	static function getInvariantCulture()
+	{
+		static $invariant;
+		if($invariant === null)
+			$invariant = new CultureInfo();
+		return $invariant;
+	}
+
+	/**
+	 * Gets a value indicating whether the current CultureInfo
+	 * represents a neutral culture. Returns true if the culture
+	 * only contains two characters.
+	 * @return boolean true if culture is neutral, false otherwise.
+	 */
+	function getIsNeutralCulture()
+	{
+		return strlen($this->culture) == 2;
+	}
+
+	/**
+	 * Gets the NumberFormatInfo that defines the culturally appropriate
+	 * format of displaying numbers, currency, and percentage.
+	 * @return NumberFormatInfo the number format info for current culture.
+	 */
+	function getNumberFormat()
+	{
+		if($this->numberFormat === null)
+		{
+			$elements = $this->findInfo('NumberElements');
+			$patterns = $this->findInfo('NumberPatterns');
+			$currencies = $this->getCurrencies();
+			$data = array(	'NumberElements'=>$elements,
+							'NumberPatterns'=>$patterns,
+							'Currencies' => $currencies);
+
+			$this->setNumberFormat(new NumberFormatInfo($data));
+		}
+		return $this->numberFormat;
+	}
+
+	/**
+	 * Set the number format information.
+	 * @param NumberFormatInfo the new number format info.
+	 */
+	function setNumberFormat($numberFormat)
+	{
+		$this->numberFormat = $numberFormat;
+	}
+
+	/**
+	 * Gets the CultureInfo that represents the parent culture of the
+	 * current CultureInfo
+	 * @return CultureInfo parent culture information.
+	 */
+	function getParent()
+	{
+		if(strlen($this->culture) == 2)
+			return $this->getInvariantCulture();
+
+		$lang = substr($this->culture,0,2);
+			return new CultureInfo($lang);
+	}
+
+	/**
+	 * Gets the list of supported cultures filtered by the specified
+	 * culture type. This is an EXPENSIVE function, it needs to traverse
+	 * a list of ICU files in the data directory.
+	 * This function can be called statically.
+	 * @param int culture type, CultureInfo::ALL, CultureInfo::NEUTRAL
+	 * or CultureInfo::SPECIFIC.
+	 * @return array list of culture information available.
+	 */
+	static function getCultures($type=CultureInfo::ALL)
+	{
+		$dataDir = CultureInfo::dataDir();
+		$dataExt = CultureInfo::fileExt();
+		$dir = dir($dataDir);
+
+		$neutral = array();
+		$specific = array();
+
+		while (false !== ($entry = $dir->read()))
+		{
+			if(is_file($dataDir.$entry)
+				&& substr($entry,-4) == $dataExt
+				&& $entry != 'root'.$dataExt)
+			{
+				$culture = substr($entry,0,-4);
+				if(strlen($culture) == 2)
+					$neutral[] = $culture;
+				else
+					$specific[] = $culture;
+			}
+		}
+		$dir->close();
+
+		switch($type)
+		{
+			case CultureInfo::ALL :
+				$all = 	array_merge($neutral, $specific);
+				sort($all);
+				return $all;
+				break;
+			case CultureInfo::NEUTRAL :
+				return $neutral;
+				break;
+			case CultureInfo::SPECIFIC :
+				return $specific;
+				break;
+		}
+	}
+
+	/**
+	 * Simplify a single element array into its own value.
+	 * E.g. <code>array(0 => array('hello'), 1 => 'world');</code>
+	 * becomes <code>array(0 => 'hello', 1 => 'world');</code>
+	 * @param array with single elements arrays
+	 * @return array simplified array.
+	 */
+	private function simplify($array)
+	{
+		for($i = 0, $k = count($array); $i<$k; ++$i)
+		{
+			$key = key($array);
+			if(is_array($array[$key])
+				&& count($array[$key]) == 1)
+				$array[$key] = $array[$key][0];
+			next($array);
+		}
+		return $array;
+	}
+
+	/**
+	 * Get a list of countries in the language of the localized version.
+	 * @return array a list of localized country names.
+	 */
+	function getCountries()
+	{
+		return $this->simplify($this->findInfo('Countries',true));
+	}
+
+	/**
+	 * Get a list of currencies in the language of the localized version.
+	 * @return array a list of localized currencies.
+	 */
+	function getCurrencies()
+	{
+		return $this->findInfo('Currencies',true);
+	}
+
+	/**
+	 * Get a list of languages in the language of the localized version.
+	 * @return array list of localized language names.
+	 */
+	function getLanguages()
+	{
+		return $this->simplify($this->findInfo('Languages',true));
+	}
+
+	/**
+	 * Get a list of scripts in the language of the localized version.
+	 * @return array list of localized script names.
+	 */
+	function getScripts()
+	{
+		return $this->simplify($this->findInfo('Scripts',true));
+	}
+
+	/**
+	 * Get a list of timezones in the language of the localized version.
+	 * @return array list of localized timezones.
+	 */
+	function getTimeZones()
+	{
+		return $this->simplify($this->findInfo('zoneStrings',true));
+	}
+}
+