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71 lines
2.5 KiB
71 lines
2.5 KiB
13 years ago
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<?php
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/**
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* Filesystem helper class file.
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*
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* @link http://www.yiiframework.com/
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* @copyright Copyright © 2008-2012 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\util;
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/**
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* Filesystem helper
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @author Alex Makarov <sam@rmcreative.ru>
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* @since 2.0
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*/
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class FileHelper
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{
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/**
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* Returns the extension name of a file path.
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* For example, the path "path/to/something.php" would return "php".
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* @param string $path the file path
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* @return string the extension name without the dot character.
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*/
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public static function getExtension($path)
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{
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return pathinfo($path, PATHINFO_EXTENSION);
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}
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/**
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* Returns the localized version of a specified file.
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*
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* The searching is based on the specified language code. In particular,
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* a file with the same name will be looked for under the subdirectory
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* whose name is same as the language code. For example, given the file "path/to/view.php"
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* and language code "zh_cn", the localized file will be looked for as
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* "path/to/zh_cn/view.php". If the file is not found, the original file
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* will be returned.
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*
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* If the target and the source language codes are the same,
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* the original file will be returned.
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*
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* For consistency, it is recommended that the language code is given
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* in lower case and in the format of LanguageID_RegionID (e.g. "en_us").
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*
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* @param string $file the original file
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* @param string $targetLanguage the target language that the file should be localized to.
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* If not set, the value of [[\yii\base\Application::language]] will be used.
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* @param string $sourceLanguage the language that the original file is in.
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* If not set, the value of [[\yii\base\Application::sourceLanguage]] will be used.
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* @return string the matching localized file, or the original file if the localized version is not found.
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* If the target and the source language codes are the same, the original file will be returned.
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*/
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public static function localize($file, $targetLanguage = null, $sourceLanguage = null)
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{
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if ($targetLanguage === null) {
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$targetLanguage = \Yii::$application->getLanguage();
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}
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if ($sourceLanguage === null) {
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$sourceLanguage = \Yii::$application->sourceLanguage;
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}
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if ($targetLanguage === $sourceLanguage) {
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return $file;
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}
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$desiredFile = dirname($file) . DIRECTORY_SEPARATOR . $sourceLanguage . DIRECTORY_SEPARATOR . basename($file);
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return is_file($desiredFile) ? $desiredFile : $file;
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}
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}
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