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-rw-r--r--engine/lib/xml.php129
1 files changed, 129 insertions, 0 deletions
diff --git a/engine/lib/xml.php b/engine/lib/xml.php
new file mode 100644
index 000000000..208763239
--- /dev/null
+++ b/engine/lib/xml.php
@@ -0,0 +1,129 @@
+<?php
+ /**
+ * Elgg XML library.
+ * Contains functions for generating and parsing XML.
+ *
+ * @package Elgg
+ * @subpackage Core
+ * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
+ * @author Marcus Povey
+ * @copyright Curverider Ltd 2008
+ * @link http://elgg.org/
+ */
+
+ /**
+ * This function serialises an object recursively into an XML representation.
+ * The function attempts to call $data->export() which expects a stdClass in return, otherwise it will attempt to
+ * get the object variables using get_object_vars (which will only return public variables!)
+ * @param $data object The object to serialise.
+ * @param $n int Level, only used for recursion.
+ * @return string The serialised XML output.
+ */
+ function serialise_object_to_xml($data, $name = "", $n = 0)
+ {
+ $classname = ($name=="" ? get_class($data) : $name);
+
+ $vars = method_exists($data, "export") ? get_object_vars($data->export()) : get_object_vars($data);
+
+ $output = "";
+
+ if (($n==0) || ( is_object($data) && !($data instanceof stdClass))) $output = "<$classname>";
+
+ foreach ($vars as $key => $value)
+ {
+ $output .= "<$key type=\"".gettype($value)."\">";
+
+ if (is_object($value))
+ $output .= serialise_object_to_xml($value, $key, $n+1);
+ else if (is_array($value))
+ $output .= serialise_array_to_xml($value, $n+1);
+ else
+ $output .= htmlentities($value);
+
+ $output .= "</$key>\n";
+ }
+
+ if (($n==0) || ( is_object($data) && !($data instanceof stdClass))) $output .= "</$classname>\n";
+
+ return $output;
+ }
+
+ /**
+ * Serialise an array.
+ *
+ * @param array $data
+ * @param int $n Used for recursion
+ * @return string
+ */
+ function serialise_array_to_xml(array $data, $n = 0)
+ {
+ $output = "";
+
+ if ($n==0) $output = "<array>\n";
+
+ foreach ($data as $key => $value)
+ {
+ $item = "array_item";
+
+ if (is_numeric($key))
+ $output .= "<$item name=\"$key\" type=\"".gettype($value)."\">";
+ else
+ {
+ $item = $key;
+ $output .= "<$item type=\"".gettype($value)."\">";
+ }
+
+ if (is_object($value))
+ $output .= serialise_object_to_xml($value, "", $n+1);
+ else if (is_array($value))
+ $output .= serialise_array_to_xml($value, $n+1);
+ else
+ $output .= htmlentities($value);
+
+ $output .= "</$item>\n";
+ }
+
+ if ($n==0) $output = "</array>\n";
+
+ return $output;
+ }
+
+ /**
+ * XML 2 Array function.
+ * Taken from http://www.bytemycode.com/snippets/snippet/445/
+ * @license UNKNOWN - Please contact if you are the original author of this code.
+ * @author UNKNOWN
+ */
+ function xml2array($xml)
+ {
+ $xmlary = array();
+
+ $reels = '/<(\w+)\s*([^\/>]*)\s*(?:\/>|>(.*)<\/\s*\\1\s*>)/s';
+ $reattrs = '/(\w+)=(?:"|\')([^"\']*)(:?"|\')/';
+
+ preg_match_all($reels, $xml, $elements);
+
+ foreach ($elements[1] as $ie => $xx) {
+ $xmlary[$ie]["name"] = $elements[1][$ie];
+
+ if ($attributes = trim($elements[2][$ie])) {
+ preg_match_all($reattrs, $attributes, $att);
+ foreach ($att[1] as $ia => $xx)
+ $xmlary[$ie]["attributes"][$att[1][$ia]] = $att[2][$ia];
+ }
+
+ $cdend = strpos($elements[3][$ie], "<");
+ if ($cdend > 0) {
+ $xmlary[$ie]["text"] = substr($elements[3][$ie], 0, $cdend - 1);
+ }
+
+ if (preg_match($reels, $elements[3][$ie]))
+ $xmlary[$ie]["elements"] = __xml2array($elements[3][$ie]);
+ else if ($elements[3][$ie]) {
+ $xmlary[$ie]["text"] = $elements[3][$ie];
+ }
+ }
+
+ return $xmlary;
+ }
+?> \ No newline at end of file