/**
* Constructor. Initializes ZipStreamer object for immediate usage.
* @param array $options Optional, ZipStreamer and zip file options as key/value pairs.
* Valid options are:
* * outstream: stream the zip file is output to (default: stdout)
* * zip64: enabled/disable zip64 support (default: True)
* * compress: int, compression method (one of COMPR::STORE,
* COMPR::DEFLATE, default COMPR::STORE)
* can be overridden for single files
* * level: int, compression level (one of COMPR::NORMAL,
* COMPR::MAXIMUM, COMPR::SUPERFAST, default COMPR::NORMAL)
*/
function __construct($options = NULL)
{
$defaultOptions = array('outstream' => NULL, 'zip64' => True, 'compress' => COMPR::STORE, 'level' => COMPR::NORMAL);
if (is_null($options)) {
$options = array();
}
$options = array_merge($defaultOptions, $options);
if ($options['outstream']) {
$this->outstream = $options['outstream'];
} else {
$this->outstream = fopen('php://output', 'w');
}
$this->zip64 = $options['zip64'];
$this->compress = $options['compress'];
$this->level = $options['level'];
$this->validateCompressionOptions($this->compress, $this->level);
//TODO: is this advisable/necessary?
if (ini_get('zlib.output_compression')) {
ini_set('zlib.output_compression', 'Off');
}
// initialize default external file attributes
$this->extFileAttrFile = UNIX::getExtFileAttr(UNIX::S_IFREG | UNIX::S_IRUSR | UNIX::S_IWUSR | UNIX::S_IRGRP | UNIX::S_IROTH);
$this->extFileAttrDir = UNIX::getExtFileAttr(UNIX::S_IFDIR | UNIX::S_IRWXU | UNIX::S_IRGRP | UNIX::S_IXGRP | UNIX::S_IROTH | UNIX::S_IXOTH) | DOS::getExtFileAttr(DOS::DIR);
$this->offset = Count64::construct(0, !$this->zip64);
}
/**
* Constructor.
*
* @param bool $sendHeaders Send suitable headers to the HTTP client (assumes nothing was sent yet)
* @param string $archiveName Name to send to the HTTP client. Optional, defaults to "archive.zip".
* @param string $contentType Content mime type. Optional, defaults to "application/zip".
*/
function __construct($sendHeaders = false, $archiveName = 'archive.zip', $contentType = 'application/zip')
{
//TODO: is this advisable/necessary?
if (ini_get('zlib.output_compression')) {
ini_set('zlib.output_compression', 'Off');
}
if ($sendHeaders) {
$headerFile = null;
$headerLine = null;
if (!headers_sent($headerFile, $headerLine) or die('<p><strong>Error:</strong> Unable to send file ' . '$archiveName. HTML Headers have already been sent from ' . '<strong>$headerFile</strong> in line <strong>$headerLine' . '</strong></p>')) {
if (ob_get_contents() === false || ob_get_contents() == '' or die('\\n<p><strong>Error:</strong> Unable to send file ' . '<strong>$archiveName.epub</strong>. Output buffer ' . 'already contains text (typically warnings or errors).</p>')) {
header('Pragma: public');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s T'));
header('Expires: 0');
header('Accept-Ranges: bytes');
header('Connection: Keep-Alive');
header('Content-Type: ' . $contentType);
header('Content-Disposition: attachment; filename="' . $archiveName . '";');
header('Content-Transfer-Encoding: binary');
}
}
flush();
// turn off output buffering
ob_end_flush();
}
// initialize default external file attributes
$this->extFileAttrFile = UNIX::getExtFileAttr(UNIX::S_IFREG | UNIX::S_IRUSR | UNIX::S_IXUSR | UNIX::S_IRGRP | UNIX::S_IROTH);
$this->extFileAttrDir = UNIX::getExtFileAttr(UNIX::S_IFDIR | UNIX::S_IRWXU | UNIX::S_IRGRP | UNIX::S_IXGRP | UNIX::S_IROTH | UNIX::S_IXOTH) | DOS::getExtFileAttr(DOS::DIR);
$this->offset = Count64::construct(0);
}