diff options
| -rw-r--r-- | engine/lib/export.php | 122 |
1 files changed, 76 insertions, 46 deletions
diff --git a/engine/lib/export.php b/engine/lib/export.php index 61cee79ba..994789042 100644 --- a/engine/lib/export.php +++ b/engine/lib/export.php @@ -12,6 +12,7 @@ /** * Define an interface for all exportable objects. + * @author Marcus Povey */ interface Exportable { @@ -22,6 +23,22 @@ } /** + * Define an interface for all importable objects. + * @author Marcus Povey + */ + interface Importable + { + /** + * Accepts an array of data to import, this data is parsed from the XML produced by export. + * The function should return the constructed object data, or NULL. + * + * @param array $data + * @throws ImportException if there was a critical error importing data. + */ + public function import(array $data); + } + + /** * Export a GUID. * * This function exports a GUID and all information related to it in an XML format. @@ -64,51 +81,66 @@ $wrapper->data = $to_be_serialised; return serialise_object_to_xml($wrapper, "elggexport"); - - - /* - XML will look something like this: - - - <elgg> - <elgguser uuid="skdfjslklkjsldkfsdfjs:556"> - <guid>556</guid> - <name>Marcus Povey</name> - - ... - - </elgguser> - <annotation> - <name>Foo</name> - <value>baaaa</value> - </annotation> - <annotation> - <name>Monkey</name> - <value>bibble</value> - </annotation> - - ... - - <metadata> - <name>Foo</name> - <value>baaaa</value> - </metadata> - - ... - - <my_plugin> - - ... - - </my_plugin> + } + - </elgg> - - */ - + /** + * 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; } /** + * This function processes an element, passing elements to the plugin stack to see if someone will + * process it. + * If nobody processes the top level element, the sub level elements are processed. + */ + function __process_element(array $dom) + { + foreach ($dom as $element) + { + // See if anyone handles this element, return true if it is. + $handled = trigger_plugin_hook("import", "all", array("name" => $element['name'], "element" => $element), $to_be_serialised); + + // If not, then see if any of its sub elements are handled + if ((!$handled) && (isset($element['elements']))) __process_element($element['elements']); + } + } + + /** * Import an XML serialisation of an object. * This will make a best attempt at importing a given xml doc. * @@ -117,12 +149,9 @@ */ function import($xml) { - // import via object ? - - // import via tag : so you pass a tag "<foo>" and all its contents out and something answers by handling it. - // THis is recursive but bredth first. - + $dom = __xml2array($xml); + __process_element($dom); } /** @@ -216,4 +245,5 @@ class ExportException extends Exception {} class ImportException extends Exception {} + ?>
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