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<?php
/**
* Trait used to allow plugins to be translated in a generic way.
*
* @author Jan-Hendrik Willms <tleilax+studip@gmail.com>
* @license GPL2 or any later version
* @since Stud.IP 5.0
*/
trait TranslatablePluginTrait
{
protected $translation_domain = null;
/**
* Initializes the translation for the plugin.
*
* @param string $domain
*/
protected function initializeTranslation($domain)
{
bindtextdomain($domain, $this->getPluginPath() . '/locale');
bind_textdomain_codeset($domain, 'UTF-8');
}
/**
* Returns the defined translation domain from plugin manifest. If none
* is set, false is returned.
*
* @return false|string The translation domain from manifest, if set
*/
protected function getTranslationDomain()
{
if ($this->translation_domain === null) {
$manifest = $this->getMetadata();
$this->translation_domain = $manifest['localedomain'] ?? false;
if ($this->translation_domain !== false) {
$this->initializeTranslation($this->translation_domain);
}
}
return $this->translation_domain;
}
/**
* Returns whether the plugin has a translation defined or not.
*
* @return bool
*/
public function hasTranslation()
{
return $this->getTranslationDomain() !== false;
}
/**
* Plugin localization for a single string.
*
* @param string $string String to translate
* @return string
*/
public function _($string)
{
$domain = $this->getTranslationDomain();
if (!$domain) {
return $string;
}
$result = dgettext($domain, $string);
// Fallback to possible translations from core system
if ($result === $string) {
$result = _($string);
}
return $result;
}
/**
* Plugin localization for plural strings.
*
* @param string $string0 String to translate (singular)
* @param string $string1 String to translate (plural)
* @param mixed $n Quantity factor (may be an array or array-like)
* @return string
*/
public function _n($string0, $string1, $n)
{
if (is_array($n)) {
$n = count($n);
}
$domain = $this->getTranslationDomain();
if (!$domain) {
return $n == 1 ? $string0 : $string1;
}
$result = dngettext($domain, $string0, $string1, $n);
// Fallback to possible translations from core system
if ($result === $string0 || $result === $string1) {
$result = ngettext($string0, $string1, $n);
}
return $result;
}
}
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