vendor/symfony/translation/Symfony/Component/Translation/Dumper/MoFileDumper.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 use Symfony\Component\Translation\Loader\MoFileLoader;
  16
  17 /**
  18  * MoFileDumper generates a gettext formatted string representation of a message catalogue.
  19  *
  20  * @author Stealth35
  21  */
  22 class MoFileDumper extends FileDumper
  23 {
  24     /**
  25      * {@inheritDoc}
  26      */
  27     public function format(MessageCatalogue $messages, $domain = 'messages')
  28     {
  29         $output = $sources = $targets = $sourceOffsets = $targetOffsets = '';
  30         $offsets = array();
  31         $size = 0;
  32
  33         foreach ($messages->all($domain) as $source => $target) {
  34             $offsets[] = array_map('strlen', array($sources, $source, $targets, $target));
  35             $sources .= "\0".$source;
  36             $targets .= "\0".$target;
  37             ++$size;
  38         }
  39
  40         $header = array(
  41             'magicNumber'      => MoFileLoader::MO_LITTLE_ENDIAN_MAGIC,
  42             'formatRevision'   => 0,
  43             'count'            => $size,
  44             'offsetId'         => MoFileLoader::MO_HEADER_SIZE,
  45             'offsetTranslated' => MoFileLoader::MO_HEADER_SIZE + (8 * $size),
  46             'sizeHashes'       => 0,
  47             'offsetHashes'     => MoFileLoader::MO_HEADER_SIZE + (16 * $size),
  48         );
  49
  50         $sourcesSize  = strlen($sources);
  51         $sourcesStart = $header['offsetHashes'] + 1;
  52
  53         foreach ($offsets as $offset) {
  54             $sourceOffsets .= $this->writeLong($offset[1])
  55                           .$this->writeLong($offset[0] + $sourcesStart);
  56             $targetOffsets .= $this->writeLong($offset[3])
  57                           .$this->writeLong($offset[2] + $sourcesStart + $sourcesSize);
  58         }
  59
  60         $output = implode(array_map(array($this, 'writeLong'), $header))
  61                .$sourceOffsets
  62                .$targetOffsets
  63                .$sources
  64                .$targets
  65                 ;
  66
  67         return $output;
  68     }
  69
  70     /**
  71      * {@inheritDoc}
  72      */
  73     protected function getExtension()
  74     {
  75         return 'mo';
  76     }
  77
  78     private function writeLong($str)
  79     {
  80         return pack('V*', $str);
  81     }
  82 }