/**
* Extract a ZIP compressed file to a given path
*
* @access public
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive into
* @param array $options Extraction options [unused]
* @return boolean True if successful
* @since 1.5
*/
function extract($archive, $destination, $options = array())
{
// Initialize variables
$this->_data = null;
$this->_metadata = null;
if (!($this->_data = file_get_contents($archive))) {
return PEAR::raiseError('Unable to read archive');
}
if (!$this->_getTarInfo($this->_data)) {
return PEAR::raiseError('Unable to decompress data');
}
for ($i = 0, $n = count($this->_metadata); $i < $n; $i++) {
$type = strtolower($this->_metadata[$i]['type']);
if ($type == 'file' || $type == 'unix file') {
$buffer = $this->_metadata[$i]['data'];
$path = extPath::clean($destination . DS . $this->_metadata[$i]['name']);
// Make sure the destination folder exists
if (!extMkdirR(dirname($path))) {
return PEAR::raiseError('Unable to create destination');
}
if (file_put_contents($path, $buffer) === false) {
return PEAR::raiseError('Unable to write entry');
}
}
}
return true;
}
/**
* Extract a ZIP compressed file to a given path using a php based algorithm that only requires zlib support
*
* @access private
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive into
* @param array $options Extraction options [unused]
* @return boolean True if successful
* @since 1.5
*/
function _extract($archive, $destination, $options)
{
// Initialize variables
$this->_data = null;
$this->_metadata = null;
if (!extension_loaded('zlib')) {
return PEAR::raiseError('Zlib Not Supported');
}
if (!($this->_data = file_get_contents($archive))) {
return PEAR::raiseError('Unable to read archive');
}
if (!$this->_getZipInfo($this->_data)) {
return false;
}
for ($i = 0, $n = count($this->_metadata); $i < $n; $i++) {
if (substr($this->_metadata[$i]['name'], -1, 1) != '/' && substr($this->_metadata[$i]['name'], -1, 1) != '\\') {
$buffer = $this->_getFileData($i);
$path = extPath::clean($destination . DS . $this->_metadata[$i]['name']);
// Make sure the destination folder exists
if (!extMkdirR(dirname($path))) {
return PEAR::raiseError('Unable to create destination');
}
if (file_put_contents($path, $buffer) === false) {
return PEAR::raiseError('Unable to write entry');
}
}
}
return true;
}
/**
* Wrapper for the standard file_exists function
*
* @param string $file File path
* @return boolean True if path is a file
* @since 1.5
*/
function exists($file)
{
return is_file(extPath::clean($file));
}
/**
* Wrapper for the standard file_exists function
*
* @param string $path Folder name relative to installation dir
* @return boolean True if path is a folder
* @since 1.5
*/
function exists($path)
{
return is_dir(extPath::clean($path));
}
/**
* @param string The name of the archive file
* @param string Directory to unpack into
* @return boolean True for success
*/
function extract($archivename, $extractdir)
{
require_once dirname(__FILE__) . '/file.php';
require_once dirname(__FILE__) . '/folder.php';
$untar = false;
$result = false;
$ext = extFile::getExt(strtolower($archivename));
// check if a tar is embedded...gzip/bzip2 can just be plain files!
if (extFile::getExt(extFile::stripExt(strtolower($archivename))) == 'tar') {
$untar = true;
}
switch ($ext) {
case 'zip':
$adapter =& extArchive::getAdapter('zip');
if ($adapter) {
$result = $adapter->extract($archivename, $extractdir);
}
break;
case 'tar':
$adapter =& extArchive::getAdapter('tar');
if ($adapter) {
$result = $adapter->extract($archivename, $extractdir);
}
break;
case 'tgz':
$untar = true;
// This format is a tarball gzip'd
// This format is a tarball gzip'd
case 'gz':
// This may just be an individual file (e.g. sql script)
// This may just be an individual file (e.g. sql script)
case 'gzip':
$adapter =& extArchive::getAdapter('gzip');
if ($adapter) {
$tmpfname = (defined('_EXT_FTPTMP_PATH') ? _EXT_FTPTMP_PATH . '/' : $extractdir) . uniqid('gzip');
$gzresult = $adapter->extract($archivename, $tmpfname);
if (!$gzresult) {
unlink($tmpfname);
return false;
}
if ($untar) {
// Try to untar the file
$tadapter =& extArchive::getAdapter('tar');
if ($tadapter) {
$result = $tadapter->extract($tmpfname, $extractdir);
}
} else {
$path = extPath::clean($extractdir);
mkdir($path);
$result = copy($tmpfname, $path . DS . extFile::stripExt(extFile::getName(strtolower($archivename))));
}
@unlink($tmpfname);
}
break;
case 'tbz2':
$untar = true;
// This format is a tarball bzip2'd
// This format is a tarball bzip2'd
case 'bz2':
// This may just be an individual file (e.g. sql script)
// This may just be an individual file (e.g. sql script)
case 'bzip2':
$adapter =& extArchive::getAdapter('bzip2');
if ($adapter) {
$tmpfname = _EXT_FTPTMP_PATH . '/' . uniqid('bzip2');
$bzresult = $adapter->extract($archivename, $tmpfname);
if (!$bzresult) {
@unlink($tmpfname);
return false;
}
if ($untar) {
// Try to untar the file
$tadapter =& extArchive::getAdapter('tar');
if ($tadapter) {
$result = $tadapter->extract($tmpfname, $extractdir);
}
} else {
$path = extPath::clean($extractdir);
mkdir($path);
$result = copy($tmpfname, $path . DS . extFile::stripExt(extFile::getName(strtolower($archivename))));
}
@unlink($tmpfname);
}
break;
default:
return PEAR::raiseError('Unknown Archive Type: ' . $ext);
break;
}
return $result;
}
