Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/lib/xml/builder.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * XML document manipulations library.
+ *
+ * @author     Time.ly Network Inc.
+ * @since      2.0
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.Xml
+ */
+class Ai1ec_XML_Builder {
+
+        /**
+         * Serializes given data (array, object, etc.) and generates an XML
+         * document from it. If $wrap_json is true, simply serializes the data as
+         * JSON and generates a simple XML wrapper around it.
+         *
+         * Function adapted from
+         * http://www.sean-barton.co.uk/2009/03/turning-an-array-or-object-into-xml-using-php/
+         *
+         * @param  mixed    $data       Data to serialize.
+         * @param  boolean  $wrap_json  Whether to serialize data in JSON format.
+         * @param  string   $node_block Name of root-level XML element.
+         * @param  string   $node_name  Name of XML element to wrap around ordinal array elements.
+         * @return string               Valid XML document.
+         */
+        public static function serialize_to_xml(
+            $data, $wrap_json = true, $node_block = 'data', $node_name = 'node'
+        ) {
+            $xml = '<?xml version="1.0" encoding="UTF-8" ?>';
+
+            $xml .= '<' . $node_block . '>';
+
+            if ( $wrap_json ) {
+                $xml .= '<![CDATA[' . json_encode( $data ) . ']]>';
+            }
+            else {
+                $xml .= self::_generate_xml_from_value( $data, $node_name );
+            }
+
+            $xml .= '</' . $node_block . '>';
+
+            return $xml;
+        }
+
+        /**
+         * Serializes $value into an XML document fragment.
+         *
+         * Function adapted from
+         * http://www.sean-barton.co.uk/2009/03/turning-an-array-or-object-into-xml-using-php/
+         *
+         * @param  mixed    $array      Value to serialize.
+         * @param  string   $node_name  Name of XML element to wrap around ordinal array elements.
+         * @return string               Valid XML document.
+         */
+        private static function _generate_xml_from_value( $value, $node_name ) {
+            if ( is_array( $value ) || is_object( $value ) ) {
+                $xml = '';
+
+                foreach ( $value as $key => $value ) {
+                    if ( is_numeric( $key ) ) {
+                        $key = $node_name;
+                    }
+
+                    $xml .= '<' . $key . '>' .
+                        self::_generate_xml_from_value( $value, $node_name ) .
+                        '</' . $key . '>';
+                }
+            }
+            else {
+                $xml = htmlspecialchars( $value, ENT_QUOTES );
+            }
+
+            return $xml;
+        }
+}