vendor/symfony/translation/Dumper/IcuResFileDumper.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Translation\Dumper;
  13
  14 use Symfony\Component\Translation\MessageCatalogue;
  15
  16 /**
  17  * IcuResDumper generates an ICU ResourceBundle formatted string representation of a message catalogue.
  18  *
  19  * @author Stealth35
  20  */
  21 class IcuResFileDumper extends FileDumper
  22 {
  23     /**
  24      * {@inheritdoc}
  25      */
  26     protected $relativePathTemplate = '%domain%/%locale%.%extension%';
  27
  28     /**
  29      * {@inheritdoc}
  30      */
  31     public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
  32     {
  33         $data = $indexes = $resources = '';
  34
  35         foreach ($messages->all($domain) as $source => $target) {
  36             $indexes .= pack('v', strlen($data) + 28);
  37             $data .= $source."\0";
  38         }
  39
  40         $data .= $this->writePadding($data);
  41
  42         $keyTop = $this->getPosition($data);
  43
  44         foreach ($messages->all($domain) as $source => $target) {
  45             $resources .= pack('V', $this->getPosition($data));
  46
  47             $data .= pack('V', strlen($target))
  48                 .mb_convert_encoding($target."\0", 'UTF-16LE', 'UTF-8')
  49                 .$this->writePadding($data)
  50                   ;
  51         }
  52
  53         $resOffset = $this->getPosition($data);
  54
  55         $data .= pack('v', count($messages->all($domain)))
  56             .$indexes
  57             .$this->writePadding($data)
  58             .$resources
  59               ;
  60
  61         $bundleTop = $this->getPosition($data);
  62
  63         $root = pack('V7',
  64             $resOffset + (2 << 28), // Resource Offset + Resource Type
  65             6,                      // Index length
  66             $keyTop,                        // Index keys top
  67             $bundleTop,                     // Index resources top
  68             $bundleTop,                     // Index bundle top
  69             count($messages->all($domain)), // Index max table length
  70             0                               // Index attributes
  71         );
  72
  73         $header = pack('vC2v4C12@32',
  74             32,                     // Header size
  75             0xDA, 0x27,             // Magic number 1 and 2
  76             20, 0, 0, 2,            // Rest of the header, ..., Size of a char
  77             0x52, 0x65, 0x73, 0x42, // Data format identifier
  78             1, 2, 0, 0,             // Data version
  79             1, 4, 0, 0              // Unicode version
  80         );
  81
  82         return $header.$root.$data;
  83     }
  84
  85     private function writePadding($data)
  86     {
  87         $padding = strlen($data) % 4;
  88
  89         if ($padding) {
  90             return str_repeat("\xAA", 4 - $padding);
  91         }
  92     }
  93
  94     private function getPosition($data)
  95     {
  96         return (strlen($data) + 28) / 4;
  97     }
  98
  99     /**
 100      * {@inheritdoc}
 101      */
 102     protected function getExtension()
 103     {
 104         return 'res';
 105     }
 106 }