Add Bzip2 export plugin

plugins/dump-bz2.php

@@ -0,0 +1,41 @@
+<?php
+
+/** Dump to Bzip2 format
+* @link http://www.adminer.org/plugins/#use
+* @uses bzopen(), 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 AdminerDumpBz2 {
+	/** @access protected */
+	var $filename, $fp;
+	
+	function dumpOutput() {
+		if (!function_exists('bzopen')) {
+			return array();
+		}
+		return array('bz2' => 'bzip2');
+	}
+	
+	function _bz2($string, $state) {
+		bzwrite($this->fp, $string);
+		if ($state & PHP_OUTPUT_HANDLER_END) {
+			bzclose($this->fp);
+			$return = file_get_contents($this->filename);
+			unlink($this->filename);
+			return $return;
+		}
+		return "";
+	}
+	
+	function dumpHeaders($identifier, $multi_table = false) {
+		if ($_POST["output"] == "bz2") {
+			$this->filename = tempnam("", "bz2");
+			$this->fp = bzopen($this->filename, 'w');
+			header("Content-Type: application/x-bzip");
+			ob_start(array($this, '_bz2'), 1e6);
+		}
+	}
+
+}