1 files changed, 529 insertions, 529 deletions
diff --git a/framework/I18N/core/MessageSource_XLIFF.php b/framework/I18N/core/MessageSource_XLIFF.php
index 207fc920..198a1290 100644
--- a/framework/I18N/core/MessageSource_XLIFF.php
+++ b/framework/I18N/core/MessageSource_XLIFF.php
@@ -1,529 +1,529 @@
-<?php
-
-/**
- * MessageSource_XLIFF 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 $Revision: 1.8 $  $Date: 2005/12/17 06:11:28 $
- * @package System.I18N.core
- */
-
-/**
- * Get the MessageSource class file.
- */
-require_once(dirname(__FILE__).'/MessageSource.php');
-
-/**
- * MessageSource_XLIFF class.
- *
- * Using XML XLIFF format as the message source for translation.
- * Details and example of XLIFF can be found in the following URLs.
- *
- * # http://www.opentag.com/xliff.htm
- * # http://www-106.ibm.com/developerworks/xml/library/x-localis2/
- *
- * See the MessageSource::factory() method to instantiate this class.
- *
- * @author Xiang Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version v1.0, last update on Fri Dec 24 16:18:44 EST 2004
- * @package System.I18N.core
- */
-class MessageSource_XLIFF extends MessageSource
-{
-	/**
-	 * Message data filename extension.
-	 * @var string
-	 */
-	protected $dataExt = '.xml';
-
-	/**
-	 * Separator between culture name and source.
-	 * @var string
-	 */
-	protected $dataSeparator = '.';
-
-	/**
-	 * Constructor.
-	 * @param string the directory where the messages are stored.
-	 * @see MessageSource::factory();
-	 */
-	function __construct($source)
-	{
-		$this->source = (string)$source;
-	}
-
-	/**
-	 * Load the messages from a XLIFF file.
-	 * @param string XLIFF file.
-	 * @return array of messages.
-	 */
-	protected function &loadData($filename)
-	{
-		//load it.
-		if(false === ($XML = simplexml_load_file($filename))) {
-			return false;
-		}
-
-		$translationUnit = $XML->xpath('//trans-unit');
-
-		$translations = array();
-
-		foreach($translationUnit as $unit)
-		{
-			$source = (string)$unit->source;
-			$translations[$source][] = (string)$unit->target;
-			$translations[$source][] = (string)$unit['id'];
-			$translations[$source][] = (string)$unit->note;
-		}
-
-		return $translations;
-	}
-
-	/**
-	 * Get the last modified unix-time for this particular catalogue+variant.
-	 * Just use the file modified time.
-	 * @param string catalogue+variant
-	 * @return int last modified in unix-time format.
-	 */
-	protected function getLastModified($source)
-	{
-		return is_file($source) ? filemtime($source) : 0;
-	}
-
-	/**
-	 * Get the XLIFF file for a specific message catalogue and cultural
-	 * vairant.
-	 * @param string message catalogue
-	 * @return string full path to the XLIFF file.
-	 */
-	protected function getSource($variant)
-	{
-		return $this->source.'/'.$variant;
-	}
-
-	/**
-	 * Determin if the XLIFF file source is valid.
-	 * @param string XLIFF file
-	 * @return boolean true if valid, false otherwise.
-	 */
-	protected function isValidSource($source)
-	{
-		return is_file($source);
-	}
-
-	/**
-	 * Get all the variants of a particular catalogue.
-	 * @param string catalogue name
-	 * @return array list of all variants for this catalogue.
-	 */
-	protected function getCatalogueList($catalogue)
-	{
-		$variants = explode('_',$this->culture);
-		$source = $catalogue.$this->dataExt;
-		$catalogues = array($source);
-		$variant = null;
-
-		for($i = 0, $k = count($variants); $i < $k; ++$i)
-		{
-			if(isset($variants[$i]{0}))
-			{
-				$variant .= ($variant)?'_'.$variants[$i]:$variants[$i];
-				$catalogues[] = $catalogue.$this->dataSeparator.$variant.$this->dataExt;
-			}
-		}
-
-		$byDir = $this->getCatalogueByDir($catalogue);
-		$catalogues = array_merge($byDir,array_reverse($catalogues));
-		$files = array();
-
-		foreach($catalogues as $file)
-		{
-			$files[] = $file;
-			$files[] = preg_replace('/\.xml$/', '.xlf', $file);
-		}
-
-		return $files;
-	}
-
-	/**
-	 * Traverse through the directory structure to find the catalogues.
-	 * This should only be called by getCatalogueList()
-	 * @param string a particular catalogue.
-	 * @return array a list of catalogues.
-	 * @see getCatalogueList()
-	 */
-	private function getCatalogueByDir($catalogue)
-	{
-		$variants = explode('_',$this->culture);
-		$catalogues = array();
-		$variant = null;
-
-		for($i = 0, $k = count($variants); $i < $k; ++$i)
-		{
-			if(isset($variants[$i]{0}))
-			{
-				$variant .= ($variant)?'_'.$variants[$i]:$variants[$i];
-				$catalogues[] = $variant.'/'.$catalogue.$this->dataExt;
-			}
-		}
-
-		return array_reverse($catalogues);
-	}
-
-	/**
-	 * Returns a list of catalogue and its culture ID.
-	 * E.g. array('messages','en_AU')
-	 * @return array list of catalogues
-	 * @see getCatalogues()
-	 */
-	public function catalogues()
-	{
-		return $this->getCatalogues();
-	}
-
-	/**
-	 * Returns a list of catalogue and its culture ID. This takes care
-	 * of directory structures.
-	 * E.g. array('messages','en_AU')
-	 * @return array list of catalogues
-	 */
-	protected function getCatalogues($dir=null,$variant=null)
-	{
-		$dir = $dir?$dir:$this->source;
-		$files = scandir($dir);
-		$catalogue = array();
-
-		foreach($files as $file)
-		{
-			if(is_dir($dir.'/'.$file) && preg_match('/^[a-z]{2}(_[A-Z]{2,3})?$/',$file)) {
-				$catalogue = array_merge(
-					$catalogue,
-					$this->getCatalogues($dir.'/'.$file, $file)
-				);
-			}
-
-			$pos = strpos($file,$this->dataExt);
-			if($pos >0 && substr($file, -1*strlen($this->dataExt)) == $this->dataExt)
-			{
-				$name = substr($file,0,$pos);
-				$dot = strrpos($name,$this->dataSeparator);
-				$culture = $variant;
-				$cat = $name;
-
-				if(is_int($dot))
-				{
-					$culture = substr($name, $dot+1, strlen($name));
-					$cat = substr($name, 0, $dot);
-				}
-
-				$details[0] = $cat;
-				$details[1] = $culture;
-				$catalogue[] = $details;
-			}
-		}
-		sort($catalogue);
-		return $catalogue;
-	}
-
-	/**
-	 * Get the variant for a catalogue depending on the current culture.
-	 * @param string catalogue
-	 * @return string the variant.
-	 * @see save()
-	 * @see update()
-	 * @see delete()
-	 */
-	private function getVariants($catalogue='messages')
-	{
-		if($catalogue === null) {
-			$catalogue = 'messages';
-		}
-
-		foreach($this->getCatalogueList($catalogue) as $variant)
-		{
-			$file = $this->getSource($variant);
-			if(is_file($file)) {
-				return array($variant, $file);
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * Save the list of untranslated blocks to the translation source.
-	 * If the translation was not found, you should add those
-	 * strings to the translation source via the <b>append()</b> method.
-	 * @param string the catalogue to add to
-	 * @return boolean true if saved successfuly, false otherwise.
-	 */
-	public function save($catalogue='messages')
-	{
-		$messages = $this->untranslated;
-		if(count($messages) <= 0) {
-			return false;
-		}
-
-		$variants = $this->getVariants($catalogue);
-
-		if($variants) {
-			list($variant, $filename) = $variants;
-		} else {
-			list($variant, $filename) = $this->createMessageTemplate($catalogue);
-		}
-
-		if(is_writable($filename) == false) {
-			throw new TIOException("Unable to save to file {$filename}, file must be writable.");
-		}
-
-		//create a new dom, import the existing xml
-		$dom = new DOMDocument();
-		$dom->load($filename);
-
-		//find the body element
-		$xpath = new DomXPath($dom);
-    	$body = $xpath->query('//body')->item(0);
-
-		$lastNodes = $xpath->query('//trans-unit[last()]');
-		if(($last=$lastNodes->item(0))!==null) {
-			$count = (int)$last->getAttribute('id');
-		} else {
-			$count = 0;
-		}
-
-		//for each message add it to the XML file using DOM
-		foreach($messages as $message)
-		{
-			$unit = $dom->createElement('trans-unit');
-			$unit->setAttribute('id',++$count);
-
-			$source = $dom->createElement('source');
-			$source->appendChild($dom->createCDATASection($message));
-
-			$target = $dom->createElement('target');
-			$target->appendChild($dom->createCDATASection(''));
-
-			$unit->appendChild($dom->createTextNode("\n"));
-			$unit->appendChild($source);
-			$unit->appendChild($dom->createTextNode("\n"));
-			$unit->appendChild($target);
-			$unit->appendChild($dom->createTextNode("\n"));
-
-			$body->appendChild($dom->createTextNode("\n"));
-			$body->appendChild($unit);
-			$body->appendChild($dom->createTextNode("\n"));
-		}
-
-
-		$fileNode = $xpath->query('//file')->item(0);
-		$fileNode->setAttribute('date', @date('Y-m-d\TH:i:s\Z'));
-
-		//save it and clear the cache for this variant
-		$dom->save($filename);
-		if(!empty($this->cache)) {
-			$this->cache->clean($variant, $this->culture);
-		}
-
-		return true;
-	}
-
-	/**
-	 * Update the translation.
-	 * @param string the source string.
-	 * @param string the new translation string.
-	 * @param string comments
-	 * @param string the catalogue to save to.
-	 * @return boolean true if translation was updated, false otherwise.
-	 */
-	public function update($text, $target, $comments, $catalogue='messages')
-	{
-		$variants = $this->getVariants($catalogue);
-
-		if($variants) {
-			list($variant, $filename) = $variants;
-		} else {
-			return false;
-		}
-
-		if(is_writable($filename) == false) {
-			throw new TIOException("Unable to update file {$filename}, file must be writable.");
-		}
-
-		//create a new dom, import the existing xml
-		$dom = DOMDocument::load($filename);
-
-		//find the body element
-		$xpath = new DomXPath($dom);
-		$units = $xpath->query('//trans-unit');
-
-		//for each of the existin units
-		foreach($units as $unit)
-		{
-			$found = false;
-			$targetted = false;
-			$commented = false;
-
-			//in each unit, need to find the source, target and comment nodes
-			//it will assume that the source is before the target.
-			foreach($unit->childNodes as $node)
-			{
-				//source node
-				if($node->nodeName == 'source' && $node->firstChild->wholeText == $text) {
-					$found = true;
-				}
-
-				//found source, get the target and notes
-				if($found)
-				{
-					//set the new translated string
-					if($node->nodeName == 'target')
-					{
-						$node->nodeValue = $target;
-						$targetted = true;
-					}
-
-					//set the notes
-					if(!empty($comments) && $node->nodeName == 'note')
-					{
-						$node->nodeValue = $comments;
-						$commented = true;
-					}
-				}
-			}
-
-			//append a target
-			if($found && !$targetted) {
-				$unit->appendChild($dom->createElement('target',$target));
-			}
-
-			//append a note
-			if($found && !$commented && !empty($comments)) {
-				$unit->appendChild($dom->createElement('note',$comments));
-			}
-
-			//finished searching
-			if($found) {
-				break;
-			}
-		}
-
-		$fileNode = $xpath->query('//file')->item(0);
-		$fileNode->setAttribute('date', @date('Y-m-d\TH:i:s\Z'));
-
-		if($dom->save($filename) >0)
-		{
-			if(!empty($this->cache)) {
-				$this->cache->clean($variant, $this->culture);
-			}
-
-			return true;
-		}
-
-		return false;
-	}
-
-	/**
-	 * Delete a particular message from the specified catalogue.
-	 * @param string the source message to delete.
-	 * @param string the catalogue to delete from.
-	 * @return boolean true if deleted, false otherwise.
-	 */
-	public function delete($message, $catalogue='messages')
-	{
-		$variants = $this->getVariants($catalogue);
-		if($variants) {
-			list($variant, $filename) = $variants;
-		} else {
-			return false;
-		}
-
-		if(is_writable($filename) == false) {
-			throw new TIOException("Unable to modify file {$filename}, file must be writable.");
-		}
-
-		//create a new dom, import the existing xml
-		$dom = DOMDocument::load($filename);
-
-		//find the body element
-		$xpath = new DomXPath($dom);
-		$units = $xpath->query('//trans-unit');
-
-		//for each of the existin units
-		foreach($units as $unit)
-		{
-			//in each unit, need to find the source, target and comment nodes
-			//it will assume that the source is before the target.
-			foreach($unit->childNodes as $node)
-			{
-				//source node
-				if($node->nodeName == 'source' && $node->firstChild->wholeText == $message)
-				{
-					//we found it, remove and save the xml file.
-					$unit->parentNode->removeChild($unit);
-					$fileNode = $xpath->query('//file')->item(0);
-					$fileNode->setAttribute('date', @date('Y-m-d\TH:i:s\Z'));
-
-					if(false !== $dom->save($filename)) {
-						if(!empty($this->cache)) {
-							$this->cache->clean($variant, $this->culture);
-						}
-						return true;
-					}
-
-					return false;
-				}
-			}
-		}
-
-		return false;
-	}
-
-	protected function createMessageTemplate($catalogue)
-	{
-		if($catalogue === null) {
-			$catalogue = 'messages';
-		}
-		
-		$variants = $this->getCatalogueList($catalogue);
-		$variant = array_shift($variants);
-		$file = $this->getSource($variant);
-		$dir = dirname($file);
-
-		if(!is_dir($dir)) {
-			@mkdir($dir);
-			@chmod($dir,PRADO_CHMOD);
-		}
-
-		if(!is_dir($dir)) {
-			throw new TException("Unable to create directory $dir");
-		}
-		
-		file_put_contents($file, $this->getTemplate($catalogue));
-		chmod($file, PRADO_CHMOD);
-
-		return array($variant, $file);
-	}
-
-	protected function getTemplate($catalogue)
-	{
-		$date = @date('c');
-		$xml = <<<EOD
-<?xml version="1.0" encoding="UTF-8"?>
-<xliff version="1.0">
- <file source-language="EN" target-language="{$this->culture}" datatype="plaintext" original="$catalogue" date="$date" product-name="$catalogue">
-  <body>
-  </body>
- </file>
-</xliff>
-EOD;
-		return $xml;
-	}
-}
+<?php
+
+/**
+ * MessageSource_XLIFF 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 $Revision: 1.8 $  $Date: 2005/12/17 06:11:28 $
+ * @package System.I18N.core
+ */
+
+/**
+ * Get the MessageSource class file.
+ */
+require_once(dirname(__FILE__).'/MessageSource.php');
+
+/**
+ * MessageSource_XLIFF class.
+ *
+ * Using XML XLIFF format as the message source for translation.
+ * Details and example of XLIFF can be found in the following URLs.
+ *
+ * # http://www.opentag.com/xliff.htm
+ * # http://www-106.ibm.com/developerworks/xml/library/x-localis2/
+ *
+ * See the MessageSource::factory() method to instantiate this class.
+ *
+ * @author Xiang Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @version v1.0, last update on Fri Dec 24 16:18:44 EST 2004
+ * @package System.I18N.core
+ */
+class MessageSource_XLIFF extends MessageSource
+{
+	/**
+	 * Message data filename extension.
+	 * @var string
+	 */
+	protected $dataExt = '.xml';
+
+	/**
+	 * Separator between culture name and source.
+	 * @var string
+	 */
+	protected $dataSeparator = '.';
+
+	/**
+	 * Constructor.
+	 * @param string the directory where the messages are stored.
+	 * @see MessageSource::factory();
+	 */
+	function __construct($source)
+	{
+		$this->source = (string)$source;
+	}
+
+	/**
+	 * Load the messages from a XLIFF file.
+	 * @param string XLIFF file.
+	 * @return array of messages.
+	 */
+	protected function &loadData($filename)
+	{
+		//load it.
+		if(false === ($XML = simplexml_load_file($filename))) {
+			return false;
+		}
+
+		$translationUnit = $XML->xpath('//trans-unit');
+
+		$translations = array();
+
+		foreach($translationUnit as $unit)
+		{
+			$source = (string)$unit->source;
+			$translations[$source][] = (string)$unit->target;
+			$translations[$source][] = (string)$unit['id'];
+			$translations[$source][] = (string)$unit->note;
+		}
+
+		return $translations;
+	}
+
+	/**
+	 * Get the last modified unix-time for this particular catalogue+variant.
+	 * Just use the file modified time.
+	 * @param string catalogue+variant
+	 * @return int last modified in unix-time format.
+	 */
+	protected function getLastModified($source)
+	{
+		return is_file($source) ? filemtime($source) : 0;
+	}
+
+	/**
+	 * Get the XLIFF file for a specific message catalogue and cultural
+	 * vairant.
+	 * @param string message catalogue
+	 * @return string full path to the XLIFF file.
+	 */
+	protected function getSource($variant)
+	{
+		return $this->source.'/'.$variant;
+	}
+
+	/**
+	 * Determin if the XLIFF file source is valid.
+	 * @param string XLIFF file
+	 * @return boolean true if valid, false otherwise.
+	 */
+	protected function isValidSource($source)
+	{
+		return is_file($source);
+	}
+
+	/**
+	 * Get all the variants of a particular catalogue.
+	 * @param string catalogue name
+	 * @return array list of all variants for this catalogue.
+	 */
+	protected function getCatalogueList($catalogue)
+	{
+		$variants = explode('_',$this->culture);
+		$source = $catalogue.$this->dataExt;
+		$catalogues = array($source);
+		$variant = null;
+
+		for($i = 0, $k = count($variants); $i < $k; ++$i)
+		{
+			if(isset($variants[$i]{0}))
+			{
+				$variant .= ($variant)?'_'.$variants[$i]:$variants[$i];
+				$catalogues[] = $catalogue.$this->dataSeparator.$variant.$this->dataExt;
+			}
+		}
+
+		$byDir = $this->getCatalogueByDir($catalogue);
+		$catalogues = array_merge($byDir,array_reverse($catalogues));
+		$files = array();
+
+		foreach($catalogues as $file)
+		{
+			$files[] = $file;
+			$files[] = preg_replace('/\.xml$/', '.xlf', $file);
+		}
+
+		return $files;
+	}
+
+	/**
+	 * Traverse through the directory structure to find the catalogues.
+	 * This should only be called by getCatalogueList()
+	 * @param string a particular catalogue.
+	 * @return array a list of catalogues.
+	 * @see getCatalogueList()
+	 */
+	private function getCatalogueByDir($catalogue)
+	{
+		$variants = explode('_',$this->culture);
+		$catalogues = array();
+		$variant = null;
+
+		for($i = 0, $k = count($variants); $i < $k; ++$i)
+		{
+			if(isset($variants[$i]{0}))
+			{
+				$variant .= ($variant)?'_'.$variants[$i]:$variants[$i];
+				$catalogues[] = $variant.'/'.$catalogue.$this->dataExt;
+			}
+		}
+
+		return array_reverse($catalogues);
+	}
+
+	/**
+	 * Returns a list of catalogue and its culture ID.
+	 * E.g. array('messages','en_AU')
+	 * @return array list of catalogues
+	 * @see getCatalogues()
+	 */
+	public function catalogues()
+	{
+		return $this->getCatalogues();
+	}
+
+	/**
+	 * Returns a list of catalogue and its culture ID. This takes care
+	 * of directory structures.
+	 * E.g. array('messages','en_AU')
+	 * @return array list of catalogues
+	 */
+	protected function getCatalogues($dir=null,$variant=null)
+	{
+		$dir = $dir?$dir:$this->source;
+		$files = scandir($dir);
+		$catalogue = array();
+
+		foreach($files as $file)
+		{
+			if(is_dir($dir.'/'.$file) && preg_match('/^[a-z]{2}(_[A-Z]{2,3})?$/',$file)) {
+				$catalogue = array_merge(
+					$catalogue,
+					$this->getCatalogues($dir.'/'.$file, $file)
+				);
+			}
+
+			$pos = strpos($file,$this->dataExt);
+			if($pos >0 && substr($file, -1*strlen($this->dataExt)) == $this->dataExt)
+			{
+				$name = substr($file,0,$pos);
+				$dot = strrpos($name,$this->dataSeparator);
+				$culture = $variant;
+				$cat = $name;
+
+				if(is_int($dot))
+				{
+					$culture = substr($name, $dot+1, strlen($name));
+					$cat = substr($name, 0, $dot);
+				}
+
+				$details[0] = $cat;
+				$details[1] = $culture;
+				$catalogue[] = $details;
+			}
+		}
+		sort($catalogue);
+		return $catalogue;
+	}
+
+	/**
+	 * Get the variant for a catalogue depending on the current culture.
+	 * @param string catalogue
+	 * @return string the variant.
+	 * @see save()
+	 * @see update()
+	 * @see delete()
+	 */
+	private function getVariants($catalogue='messages')
+	{
+		if($catalogue === null) {
+			$catalogue = 'messages';
+		}
+
+		foreach($this->getCatalogueList($catalogue) as $variant)
+		{
+			$file = $this->getSource($variant);
+			if(is_file($file)) {
+				return array($variant, $file);
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Save the list of untranslated blocks to the translation source.
+	 * If the translation was not found, you should add those
+	 * strings to the translation source via the <b>append()</b> method.
+	 * @param string the catalogue to add to
+	 * @return boolean true if saved successfuly, false otherwise.
+	 */
+	public function save($catalogue='messages')
+	{
+		$messages = $this->untranslated;
+		if(count($messages) <= 0) {
+			return false;
+		}
+
+		$variants = $this->getVariants($catalogue);
+
+		if($variants) {
+			list($variant, $filename) = $variants;
+		} else {
+			list($variant, $filename) = $this->createMessageTemplate($catalogue);
+		}
+
+		if(is_writable($filename) == false) {
+			throw new TIOException("Unable to save to file {$filename}, file must be writable.");
+		}
+
+		//create a new dom, import the existing xml
+		$dom = new DOMDocument();
+		$dom->load($filename);
+
+		//find the body element
+		$xpath = new DomXPath($dom);
+    	$body = $xpath->query('//body')->item(0);
+
+		$lastNodes = $xpath->query('//trans-unit[last()]');
+		if(($last=$lastNodes->item(0))!==null) {
+			$count = (int)$last->getAttribute('id');
+		} else {
+			$count = 0;
+		}
+
+		//for each message add it to the XML file using DOM
+		foreach($messages as $message)
+		{
+			$unit = $dom->createElement('trans-unit');
+			$unit->setAttribute('id',++$count);
+
+			$source = $dom->createElement('source');
+			$source->appendChild($dom->createCDATASection($message));
+
+			$target = $dom->createElement('target');
+			$target->appendChild($dom->createCDATASection(''));
+
+			$unit->appendChild($dom->createTextNode("\n"));
+			$unit->appendChild($source);
+			$unit->appendChild($dom->createTextNode("\n"));
+			$unit->appendChild($target);
+			$unit->appendChild($dom->createTextNode("\n"));
+
+			$body->appendChild($dom->createTextNode("\n"));
+			$body->appendChild($unit);
+			$body->appendChild($dom->createTextNode("\n"));
+		}
+
+
+		$fileNode = $xpath->query('//file')->item(0);
+		$fileNode->setAttribute('date', @date('Y-m-d\TH:i:s\Z'));
+
+		//save it and clear the cache for this variant
+		$dom->save($filename);
+		if(!empty($this->cache)) {
+			$this->cache->clean($variant, $this->culture);
+		}
+
+		return true;
+	}
+
+	/**
+	 * Update the translation.
+	 * @param string the source string.
+	 * @param string the new translation string.
+	 * @param string comments
+	 * @param string the catalogue to save to.
+	 * @return boolean true if translation was updated, false otherwise.
+	 */
+	public function update($text, $target, $comments, $catalogue='messages')
+	{
+		$variants = $this->getVariants($catalogue);
+
+		if($variants) {
+			list($variant, $filename) = $variants;
+		} else {
+			return false;
+		}
+
+		if(is_writable($filename) == false) {
+			throw new TIOException("Unable to update file {$filename}, file must be writable.");
+		}
+
+		//create a new dom, import the existing xml
+		$dom = DOMDocument::load($filename);
+
+		//find the body element
+		$xpath = new DomXPath($dom);
+		$units = $xpath->query('//trans-unit');
+
+		//for each of the existin units
+		foreach($units as $unit)
+		{
+			$found = false;
+			$targetted = false;
+			$commented = false;
+
+			//in each unit, need to find the source, target and comment nodes
+			//it will assume that the source is before the target.
+			foreach($unit->childNodes as $node)
+			{
+				//source node
+				if($node->nodeName == 'source' && $node->firstChild->wholeText == $text) {
+					$found = true;
+				}
+
+				//found source, get the target and notes
+				if($found)
+				{
+					//set the new translated string
+					if($node->nodeName == 'target')
+					{
+						$node->nodeValue = $target;
+						$targetted = true;
+					}
+
+					//set the notes
+					if(!empty($comments) && $node->nodeName == 'note')
+					{
+						$node->nodeValue = $comments;
+						$commented = true;
+					}
+				}
+			}
+
+			//append a target
+			if($found && !$targetted) {
+				$unit->appendChild($dom->createElement('target',$target));
+			}
+
+			//append a note
+			if($found && !$commented && !empty($comments)) {
+				$unit->appendChild($dom->createElement('note',$comments));
+			}
+
+			//finished searching
+			if($found) {
+				break;
+			}
+		}
+
+		$fileNode = $xpath->query('//file')->item(0);
+		$fileNode->setAttribute('date', @date('Y-m-d\TH:i:s\Z'));
+
+		if($dom->save($filename) >0)
+		{
+			if(!empty($this->cache)) {
+				$this->cache->clean($variant, $this->culture);
+			}
+
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Delete a particular message from the specified catalogue.
+	 * @param string the source message to delete.
+	 * @param string the catalogue to delete from.
+	 * @return boolean true if deleted, false otherwise.
+	 */
+	public function delete($message, $catalogue='messages')
+	{
+		$variants = $this->getVariants($catalogue);
+		if($variants) {
+			list($variant, $filename) = $variants;
+		} else {
+			return false;
+		}
+
+		if(is_writable($filename) == false) {
+			throw new TIOException("Unable to modify file {$filename}, file must be writable.");
+		}
+
+		//create a new dom, import the existing xml
+		$dom = DOMDocument::load($filename);
+
+		//find the body element
+		$xpath = new DomXPath($dom);
+		$units = $xpath->query('//trans-unit');
+
+		//for each of the existin units
+		foreach($units as $unit)
+		{
+			//in each unit, need to find the source, target and comment nodes
+			//it will assume that the source is before the target.
+			foreach($unit->childNodes as $node)
+			{
+				//source node
+				if($node->nodeName == 'source' && $node->firstChild->wholeText == $message)
+				{
+					//we found it, remove and save the xml file.
+					$unit->parentNode->removeChild($unit);
+					$fileNode = $xpath->query('//file')->item(0);
+					$fileNode->setAttribute('date', @date('Y-m-d\TH:i:s\Z'));
+
+					if(false !== $dom->save($filename)) {
+						if(!empty($this->cache)) {
+							$this->cache->clean($variant, $this->culture);
+						}
+						return true;
+					}
+
+					return false;
+				}
+			}
+		}
+
+		return false;
+	}
+
+	protected function createMessageTemplate($catalogue)
+	{
+		if($catalogue === null) {
+			$catalogue = 'messages';
+		}
+		
+		$variants = $this->getCatalogueList($catalogue);
+		$variant = array_shift($variants);
+		$file = $this->getSource($variant);
+		$dir = dirname($file);
+
+		if(!is_dir($dir)) {
+			@mkdir($dir);
+			@chmod($dir,PRADO_CHMOD);
+		}
+
+		if(!is_dir($dir)) {
+			throw new TException("Unable to create directory $dir");
+		}
+		
+		file_put_contents($file, $this->getTemplate($catalogue));
+		chmod($file, PRADO_CHMOD);
+
+		return array($variant, $file);
+	}
+
+	protected function getTemplate($catalogue)
+	{
+		$date = @date('c');
+		$xml = <<<EOD
+<?xml version="1.0" encoding="UTF-8"?>
+<xliff version="1.0">
+ <file source-language="EN" target-language="{$this->culture}" datatype="plaintext" original="$catalogue" date="$date" product-name="$catalogue">
+  <body>
+  </body>
+ </file>
+</xliff>
+EOD;
+		return $xml;
+	}
+}