Added file saving/export ability to server_opensave extension, fixing issue 582

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@1625 eee81c28-f429-11dd-99c0-75d572ba1ddd

editor/extensions/filesave.php

@@ -0,0 +1,44 @@
+<?php
+/*
+ * filesave.php
+ * To be used with ext-server_opensave.js for SVG-edit
+ *
+ * Licensed under the Apache License, Version 2
+ *
+ * Copyright(c) 2010 Alexis Deveria
+ *
+ */
+ 
+if(!isset($_POST['output_svg']) && !isset($_POST['output_png'])) {
+	die('post fail');
+}
+
+$file = '';
+
+$suffix = isset($_POST['output_svg'])?'.svg':'.png';
+
+if(isset($_POST['filename']) && strlen($_POST['filename']) > 0) {
+	$file = $_POST['filename'] . $suffix;
+} else {
+	$file = 'image' . $suffix;
+}
+
+if($suffix == '.svg') {
+	$mime = 'image/svg+xml';
+	$contents = rawurldecode($_POST['output_svg']);
+} else {
+	$mime = 'image/png';
+	$contents = $_POST['output_png'];
+	$pos = (strpos($contents, 'base64,') + 7);
+	$contents = base64_decode(substr($contents, $pos));
+}
+
+ header("Cache-Control: public");
+ header("Content-Description: File Transfer");
+ header("Content-Disposition: attachment; filename=" . $file);
+ header("Content-Type: " .  $mime);
+ header("Content-Transfer-Encoding: binary");
+ 
+ echo $contents;
+ 
+?>