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Viewing File: /opt/alt/php55/usr/share/pear/Symfony/Component/Translation/Loader/MoFileLoader.php
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Translation\Loader;
use Symfony\Component\Translation\Exception\InvalidResourceException;
use Symfony\Component\Translation\Exception\NotFoundResourceException;
use Symfony\Component\Config\Resource\FileResource;
/**
* @copyright Copyright (c) 2010, Union of RAD http://union-of-rad.org (http://lithify.me/)
*/
class MoFileLoader extends ArrayLoader implements LoaderInterface
{
/**
* Magic used for validating the format of a MO file as well as
* detecting if the machine used to create that file was little endian.
*
* @var float
*/
const MO_LITTLE_ENDIAN_MAGIC = 0x950412de;
/**
* Magic used for validating the format of a MO file as well as
* detecting if the machine used to create that file was big endian.
*
* @var float
*/
const MO_BIG_ENDIAN_MAGIC = 0xde120495;
/**
* The size of the header of a MO file in bytes.
*
* @var integer Number of bytes.
*/
const MO_HEADER_SIZE = 28;
public function load($resource, $locale, $domain = 'messages')
{
if (!stream_is_local($resource)) {
throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource));
}
if (!file_exists($resource)) {
throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource));
}
$messages = $this->parse($resource);
// empty file
if (null === $messages) {
$messages = array();
}
// not an array
if (!is_array($messages)) {
throw new InvalidResourceException(sprintf('The file "%s" must contain a valid mo file.', $resource));
}
$catalogue = parent::load($messages, $locale, $domain);
$catalogue->addResource(new FileResource($resource));
return $catalogue;
}
/**
* Parses machine object (MO) format, independent of the machine's endian it
* was created on. Both 32bit and 64bit systems are supported.
*
* @param resource $resource
*
* @return array
* @throws InvalidResourceException If stream content has an invalid format.
*/
private function parse($resource)
{
$stream = fopen($resource, 'r');
$stat = fstat($stream);
if ($stat['size'] < self::MO_HEADER_SIZE) {
throw new InvalidResourceException("MO stream content has an invalid format.");
}
$magic = unpack('V1', fread($stream, 4));
$magic = hexdec(substr(dechex(current($magic)), -8));
if ($magic == self::MO_LITTLE_ENDIAN_MAGIC) {
$isBigEndian = false;
} elseif ($magic == self::MO_BIG_ENDIAN_MAGIC) {
$isBigEndian = true;
} else {
throw new InvalidResourceException("MO stream content has an invalid format.");
}
// formatRevision
$this->readLong($stream, $isBigEndian);
$count = $this->readLong($stream, $isBigEndian);
$offsetId = $this->readLong($stream, $isBigEndian);
$offsetTranslated = $this->readLong($stream, $isBigEndian);
// sizeHashes
$this->readLong($stream, $isBigEndian);
// offsetHashes
$this->readLong($stream, $isBigEndian);
$messages = array();
for ($i = 0; $i < $count; $i++) {
$singularId = $pluralId = null;
$translated = null;
fseek($stream, $offsetId + $i * 8);
$length = $this->readLong($stream, $isBigEndian);
$offset = $this->readLong($stream, $isBigEndian);
if ($length < 1) {
continue;
}
fseek($stream, $offset);
$singularId = fread($stream, $length);
if (strpos($singularId, "\000") !== false) {
list($singularId, $pluralId) = explode("\000", $singularId);
}
fseek($stream, $offsetTranslated + $i * 8);
$length = $this->readLong($stream, $isBigEndian);
$offset = $this->readLong($stream, $isBigEndian);
fseek($stream, $offset);
$translated = fread($stream, $length);
if (strpos($translated, "\000") !== false) {
$translated = explode("\000", $translated);
}
$ids = array('singular' => $singularId, 'plural' => $pluralId);
$item = compact('ids', 'translated');
if (is_array($item['translated'])) {
$messages[$item['ids']['singular']] = stripcslashes($item['translated'][0]);
if (isset($item['ids']['plural'])) {
$plurals = array();
foreach ($item['translated'] as $plural => $translated) {
$plurals[] = sprintf('{%d} %s', $plural, $translated);
}
$messages[$item['ids']['plural']] = stripcslashes(implode('|', $plurals));
}
} elseif (!empty($item['ids']['singular'])) {
$messages[$item['ids']['singular']] = stripcslashes($item['translated']);
}
}
fclose($stream);
return array_filter($messages);
}
/**
* Reads an unsigned long from stream respecting endianess.
*
* @param resource $stream
* @param boolean $isBigEndian
* @return integer
*/
private function readLong($stream, $isBigEndian)
{
$result = unpack($isBigEndian ? 'N1' : 'V1', fread($stream, 4));
$result = current($result);
return (integer) substr($result, -8);
}
}
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