/** * Class constructor - initializes internal operating parameters */ public function __construct() { AEUtilLogger::WriteLog(_AE_LOG_DEBUG, "AEArchiverZipnative :: New instance"); if (!class_exists('ZipArchive')) { $this->setError('Your server does not support the ZipArchive extension. Please use a different Archiver Engine and retry backing up your site'); } parent::__construct(); }
/** * Class constructor - initializes internal operating parameters */ public function __construct() { AEUtilLogger::WriteLog(_AE_LOG_DEBUG, "AEArchiverZip :: New instance"); // Get chunk override $registry = AEFactory::getConfiguration(); if ($registry->get('engine.archiver.common.chunk_size', 0) > 0) { $this->AkeebaPackerZIP_CHUNK_SIZE = AKEEBA_CHUNK; } else { // Try to use as much memory as it's possible for CRC32 calculation $memLimit = ini_get("memory_limit"); if (strstr($memLimit, 'M')) { $memLimit = (int) $memLimit * 1048576; } elseif (strstr($memLimit, 'K')) { $memLimit = (int) $memLimit * 1024; } elseif (strstr($memLimit, 'G')) { $memLimit = (int) $memLimit * 1073741824; } else { $memLimit = (int) $memLimit; } if (is_numeric($memLimit) && $memLimit < 0) { $memLimit = ""; } // 1.2a3 -- Rare case with memory_limit < 0, e.g. -1Mb! if ($memLimit == "") { // No memory limit, use 2Mb chunks (fairly large, right?) $this->AkeebaPackerZIP_CHUNK_SIZE = 2097152; } elseif (function_exists("memory_get_usage")) { // PHP can report memory usage, see if there's enough available memory; Joomla! alone eats about 5-6Mb! This code is called on files <= 1Mb $memLimit = $this->_return_bytes($memLimit); $availableRAM = $memLimit - memory_get_usage(); if ($availableRAM <= 0) { // Some PHP implemenations also return the size of the httpd footprint! if ($memLimit - 6291456 > 0) { $this->AkeebaPackerZIP_CHUNK_SIZE = $memLimit - 6291456; } else { $this->AkeebaPackerZIP_CHUNK_SIZE = 2097152; } } else { $this->AkeebaPackerZIP_CHUNK_SIZE = $availableRAM * 0.5; } } else { // PHP can't report memory usage, use a conservative 512Kb $this->AkeebaPackerZIP_CHUNK_SIZE = 524288; } } // NEW 2.3: Should we enable Split ZIP feature? $fragmentsize = $registry->get('engine.archiver.common.part_size', 0); if ($fragmentsize >= 65536) { // If the fragment size is AT LEAST 64Kb, enable Split ZIP $this->_useSplitZIP = true; $this->_fragmentSize = $fragmentsize; // Indicate that we have at least 1 part $statistics = AEFactory::getStatistics(); $statistics->updateMultipart(1); } // NEW 2.3: Should I use Symlink Target Storage? $dereferencesymlinks = $registry->get('engine.archiver.common.dereference_symlinks', true); if (!$dereferencesymlinks) { // We are told not to dereference symlinks. Are we on Windows? if (function_exists('php_uname')) { $isWindows = stristr(php_uname(), 'windows'); } else { $isWindows = DIRECTORY_SEPARATOR == '\\'; } // If we are not on Windows, enable symlink target storage $this->_symlink_store_target = !$isWindows; } AEUtilLogger::WriteLog(_AE_LOG_DEBUG, "Chunk size for CRC is now " . $this->AkeebaPackerZIP_CHUNK_SIZE . " bytes"); parent::__construct(); }