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<?php
class I18nData {
const REFERENCE_LANGUAGE = 'en';
private $data = array();
private $originalData = array();
public function __construct($data) {
$this->data = $data;
$this->originalData = $data;
}
public function getData() {
return $this->data;
}
/**
* Return the available languages
*
* @return array
*/
public function getAvailableLanguages() {
$languages = array_keys($this->data);
sort($languages);
return $languages;
}
/**
* Add a new language. It's a copy of the reference language.
*
* @param string $language
* @throws Exception
*/
public function addLanguage($language) {
if (array_key_exists($language, $this->data)) {
throw new Exception('The selected language already exist.');
}
$this->data[$language] = $this->data[static::REFERENCE_LANGUAGE];
}
/**
* Add a key in the reference language
*
* @param string $key
* @param string $value
* @throws Exception
*/
public function addKey($key, $value) {
if (array_key_exists($key, $this->data[static::REFERENCE_LANGUAGE][$this->getFilenamePrefix($key)])) {
throw new Exception('The selected key already exist.');
}
$this->data[static::REFERENCE_LANGUAGE][$this->getFilenamePrefix($key)][$key] = $value;
}
/**
* Add a value for a key for the selected language.
*
* @param string $key
* @param string $value
* @param string $language
* @throws Exception
*/
public function addValue($key, $value, $language) {
if (!in_array($language, $this->getAvailableLanguages())) {
throw new Exception('The selected language does not exist.');
}
if (!array_key_exists($key, $this->data[static::REFERENCE_LANGUAGE][$this->getFilenamePrefix($key)])) {
throw new Exception('The selected key does not exist for the selected language.');
}
$this->data[$language][$this->getFilenamePrefix($key)][$key] = $value;
}
/**
* Duplicate a key from the reference language to all other languages
*
* @param string $key
* @throws Exception
*/
public function duplicateKey($key) {
if (!array_key_exists($key, $this->data[static::REFERENCE_LANGUAGE][$this->getFilenamePrefix($key)])) {
throw new Exception('The selected key does not exist.');
}
$value = $this->data[static::REFERENCE_LANGUAGE][$this->getFilenamePrefix($key)][$key];
foreach ($this->getAvailableLanguages() as $language) {
if (static::REFERENCE_LANGUAGE === $language) {
continue;
}
if (array_key_exists($key, $this->data[$language][$this->getFilenamePrefix($key)])) {
continue;
}
$this->data[$language][$this->getFilenamePrefix($key)][$key] = $value;
}
}
/**
* Remove a key in all languages
*
* @param string $key
* @throws Exception
*/
public function removeKey($key) {
if (!array_key_exists($key, $this->data[static::REFERENCE_LANGUAGE][$this->getFilenamePrefix($key)])) {
throw new Exception('The selected key does not exist.');
}
foreach ($this->getAvailableLanguages() as $language) {
if (array_key_exists($key, $this->data[$language][$this->getFilenamePrefix($key)])) {
unset($this->data[$language][$this->getFilenamePrefix($key)][$key]);
}
}
}
/**
* Check if the data has changed
*
* @return bool
*/
public function hasChanged() {
return $this->data !== $this->originalData;
}
public function getLanguage($language) {
return $this->data[$language];
}
public function getReferenceLanguage() {
return $this->getLanguage(static::REFERENCE_LANGUAGE);
}
/**
* @param string $key
* @return string
*/
private function getFilenamePrefix($key) {
return preg_replace('/\..*/', '.php', $key);
}
}
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