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| -rw-r--r-- | engine/lib/xml.php | 129 |
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; + } +?>
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