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📝 Editando: MoFileParser.php

<?php
/**
 * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 * @link          https://cakephp.org CakePHP(tm) Project
 * @since         3.0.0
 * @license       https://opensource.org/licenses/mit-license.php MIT License
 */
namespace Cake\I18n\Parser;

use RuntimeException;

/**
 * Parses file in PO format
 *
 * @copyright Copyright (c) 2010, Union of RAD http://union-of-rad.org (http://lithify.me/)
 * @copyright Copyright (c) 2014, Fabien Potencier https://github.com/symfony/Translation/blob/master/LICENSE
 */
class MoFileParser
{

/**
     * 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 int
     */
    const MO_HEADER_SIZE = 28;

/**
     * Parses machine object (MO) format, independent of the machine's endian it
     * was created on. Both 32bit and 64bit systems are supported.
     *
     * @param resource $resource The file to be parsed.
     *
     * @return array List of messages extracted from the file
     * @throws \RuntimeException If stream content has an invalid format.
     */
    public function parse($resource)
    {
        $stream = fopen($resource, 'rb');

$stat = fstat($stream);

if ($stat['size'] < self::MO_HEADER_SIZE) {
            throw new RuntimeException('Invalid format for MO translations file');
        }
        $magic = unpack('V1', fread($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 RuntimeException('Invalid format for MO translations file');
        }

// offset formatRevision
        fread($stream, 4);

$count = $this->_readLong($stream, $isBigEndian);
        $offsetId = $this->_readLong($stream, $isBigEndian);
        $offsetTranslated = $this->_readLong($stream, $isBigEndian);

// Offset to start of translations
        fread($stream, 8);
        $messages = [];

for ($i = 0; $i < $count; $i++) {
            $pluralId = null;
            $context = null;
            $plurals = 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($singularId, "\x04") !== false) {
                list($context, $singularId) = explode("\x04", $singularId);
            }

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 ($pluralId !== null || strpos($translated, "\000") !== false) {
                $translated = explode("\000", $translated);
                $plurals = $pluralId !== null ? array_map('stripcslashes', $translated) : null;
                $translated = $translated[0];
            }

$singular = stripcslashes($translated);
            if ($context !== null) {
                $messages[$singularId]['_context'][$context] = $singular;
                if ($pluralId !== null) {
                    $messages[$pluralId]['_context'][$context] = $plurals;
                }
                continue;
            }

$messages[$singularId] = $singular;
            if ($pluralId !== null) {
                $messages[$pluralId] = $plurals;
            }
        }

fclose($stream);

return $messages;
    }

/**
     * Reads an unsigned long from stream respecting endianess.
     *
     * @param resource $stream The File being read.
     * @param bool $isBigEndian Whether or not the current platform is Big Endian
     * @return int
     */
    protected function _readLong($stream, $isBigEndian)
    {
        $result = unpack($isBigEndian ? 'N1' : 'V1', fread($stream, 4));
        $result = current($result);

return (int)substr($result, -8);
    }
}

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📝 Editando: MoFileParser.php