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98 lines
2.7 KiB
98 lines
2.7 KiB
12 years ago
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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\i18n;
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use Yii;
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/**
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* GettextPoFile represents a PO Gettext message file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class GettextPoFile extends GettextFile
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{
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/**
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* Loads messages from a PO file.
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* @param string $filePath file path
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* @param string $context message context
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* @return array message translations. Array keys are source messages and array values are translated messages:
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* source message => translated message.
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*/
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public function load($filePath, $context)
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{
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$pattern = '/(msgctxt\s+"(.*?(?<!\\\\))")?\s+' // context
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. 'msgid\s+((?:".*(?<!\\\\)"\s*)+)\s+' // message ID, i.e. original string
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. 'msgstr\s+((?:".*(?<!\\\\)"\s*)+)/'; // translated string
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$content = file_get_contents($filePath);
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$matches = array();
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$matchCount = preg_match_all($pattern, $content, $matches);
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$messages = array();
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for ($i = 0; $i < $matchCount; ++$i) {
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if ($matches[2][$i] == $context) {
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$id = $this->decode($matches[3][$i]);
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$message = $this->decode($matches[4][$i]);
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$messages[$id] = $message;
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}
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}
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return $messages;
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}
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/**
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* Saves messages to a PO file.
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* @param string $filePath file path
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* @param array $messages message translations. Array keys are source messages and array values are
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* translated messages: source message => translated message. Note if the message has a context,
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* the message ID must be prefixed with the context with chr(4) as the separator.
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*/
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public function save($filePath, $messages)
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{
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$content = '';
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foreach ($messages as $id => $message) {
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$separatorPosition = strpos($id, chr(4));
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if ($separatorPosition !== false) {
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$content .= 'msgctxt "' . substr($id, 0, $separatorPosition) . "\"\n";
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$id = substr($id, $separatorPosition + 1);
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}
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$content .= 'msgid "' . $this->encode($id) . "\"\n";
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$content .= 'msgstr "' . $this->encode($message) . "\"\n\n";
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}
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file_put_contents($filePath, $content);
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}
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/**
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* Encodes special characters in a message.
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* @param string $string message to be encoded
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* @return string the encoded message
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*/
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protected function encode($string)
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{
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return str_replace(
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array('"', "\n", "\t", "\r"),
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array('\\"', '\\n', '\\t', '\\r'),
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$string
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);
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}
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/**
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* Decodes special characters in a message.
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* @param string $string message to be decoded
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* @return string the decoded message
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*/
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protected function decode($string)
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{
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$string = preg_replace(
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array('/"\s+"/', '/\\\\n/', '/\\\\r/', '/\\\\t/', '/\\\\"/'),
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array('', "\n", "\r", "\t", '"'),
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$string
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);
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return substr(rtrim($string), 1, -1);
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}
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}
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