XoopsModules25x/adminer

<?php

/** Dump to ZIP format
* @link https://www.adminer.org/plugins/#use
* @uses ZipArchive, tempnam("")
* @author Jakub Vrana, http://www.vrana.cz/
* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
*/
class AdminerDumpZip {
    /** @access protected */
    var $filename, $data;

    function dumpOutput() {
        if (!class_exists('ZipArchive')) {
            return array();
        }
        return array('zip' => 'ZIP');
    }

    function _zip($string, $state) {
        // ZIP can be created without temporary file by gzcompress - see PEAR File_Archive
        $this->data .= $string;
        if ($state & PHP_OUTPUT_HANDLER_END) {
            $zip = new ZipArchive;
            $zipFile = tempnam('', 'zip');
            $zip->open($zipFile, ZipArchive::OVERWRITE); // php://output is not supported
            $zip->addFromString($this->filename, $this->data);
            $zip->close();
            $return = file_get_contents($zipFile);
            unlink($zipFile);
            return $return;
        }
        return '';
    }

    function dumpHeaders($identifier, $multi_table = false) {
        if ($_POST['output'] == 'zip') {
            $this->filename = "$identifier." . ($multi_table && preg_match('~[ct]sv~', $_POST['format']) ? 'tar' : $_POST['format']);
            header('Content-Type: application/zip');
            ob_start(array($this, '_zip'));
        }
    }

}