\n";
$xml_code .= "\n";
$xml_code .= node_export_xml_encode($nodes);
$xml_code .= "";
return $xml_code;
}
/**
* Import callback.
*/
function node_export_xml_import($code_string) {
// Check for "decode($code_string);
// Convert the nodes into objects.
if (!isset($result['success'])) {
foreach($result as $k => $v) {
$result[$k] = (object)$v;
}
}
return $result;
}
}
/**
* Build XML string recursively.
*/
function node_export_xml_encode($var, $iteration = 0) {
$xml_code = "";
$tab = '';
for ($i = 0; $i <= $iteration; $i++) {
$tab = $tab . " ";
}
$iteration++;
foreach ($var as $key => $value) {
$attributes = array();
if (is_bool($value)) {
$attributes['type'] = 'boolean';
}
elseif (is_null($value)) {
$attributes['type'] = 'NULL';
}
elseif (is_object($value)) {
if ($iteration == 1 && isset($value->nid) && isset($value->type)) {
// Assume first-level object with a nid and type is a stdClass node.
$key = "node";
}
else {
$attributes['class'] = get_class($value);
}
$value = (array)$value;
}
if (is_array($value) && array_values($value) === $value) {
$attributes['_numeric_keys'] = "1";
}
$attr_string = "";
foreach ($attributes as $attr_name => $attr_value) {
$attr_string .= ' ' . $attr_name . '="' . $attr_value . '"';
}
if (is_numeric($key)) {
$key = "n" . $key;
}
$xml_code .= $tab . "<" . $key . $attr_string . ">";
if (is_array($value)) {
if (!empty($value)) {
$xml_code .= "\n";
$xml_code .= node_export_xml_encode($value, $iteration);
if (!is_numeric($key)) {
$xml_code .= $tab;
}
}
}
elseif (is_numeric($value)) {
$xml_code .= $value;
}
elseif (is_bool($value)) {
$xml_code .= ($value ? 'TRUE' : 'FALSE');
}
elseif (is_string($value)) {
$xml_code .= htmlspecialchars($value);
}
$xml_code .= "\n";
}
return $xml_code;
}
/**
* Class for parsing Node export XML.
*/
class NodeExportXmlDecoder {
var $stack;
var $output;
function decode($code_string) {
$parser = xml_parser_create();
xml_set_element_handler($parser, array(&$this, 'start_handler'), array(&$this, 'end_handler'));
xml_set_character_data_handler($parser, array(&$this, 'data_handler'));
$this->stack = array(
array(
'name' => 'node_export',
'attributes' => array(),
'children' => array(),
'data' => '',
)
);
if (!xml_parse($parser, $code_string)) {
$errors[] = "Node export XML import was unsuccessful, error details follow. No nodes imported.";
$line = xml_get_current_line_number($parser);
$column = xml_get_current_column_number($parser);
$error = xml_error_string(xml_get_error_code($parser));
$errors[] = "Line " . $line . ", Column " . $column .": ". $error;
$lines = explode("\n", $code_string, $line + 1);
$errors[] = "". htmlspecialchars($lines[$line - 1]) ."
";
xml_parser_free($parser);
return array(
'success' => FALSE,
'output' => $errors,
);
}
xml_parser_free($parser);
$tmp = $this->build($this->stack[0]);
if (count($tmp) == 1) {
$this->output = array_pop($tmp);
}
else {
$this->output = array();
}
unset($this->stack);
return $this->output;
}
function build($stack) {
$result = array();
if (count($stack['children']) > 0) {
$keycount = array();
foreach ($stack['children'] as $child) {
$keycount[] = $child['name'];
}
if (count(array_unique($keycount)) != count($keycount)) {
// Enumerated array.
$children = array();
foreach ($stack['children'] as $child) {
$children[] = $this->build($child);
}
}
else {
// Associative array.
$children = array();
foreach ($stack['children'] as $child) {
if (!empty($stack['attributes']['_NUMERIC_KEYS'])) {
$child['name'] = intval(substr($child['name'], 1));
}
$children[$child['name']] = $this->build($child);
}
}
$result = array_merge($result, $children);
}
if (count($result) == 0) {
// An atomic value.
$return = trim($stack['data']);
if (isset($stack['attributes']['TYPE'])) {
if ($stack['attributes']['TYPE'] == 'boolean') {
return (trim($stack['data']) == 'TRUE' ? TRUE : FALSE);
}
elseif ($stack['attributes']['TYPE'] == 'NULL') {
return NULL;
}
}
return htmlspecialchars_decode(trim($stack['data']));
}
else {
// An array or object.
if (isset($stack['attributes']['CLASS'])) {
$object = new $stack['attributes']['CLASS']();
foreach ($result as $k => $v) {
$object->$k = $v;
}
$result = $object;
}
return $result;
}
}
function start_handler($parser, $name, $attributes = array()) {
$token = array();
$token['name'] = strtolower($name);
$token['attributes'] = $attributes;
$token['data'] = '';
$token['children'] = array();
$this->stack[] = $token;
}
function end_handler($parser, $name, $attributes = array()) {
$token = array_pop($this->stack);
$this->stack[count($this->stack) - 1]['children'][] = $token;
}
function data_handler($parser, $data) {
$this->stack[count($this->stack) - 1]['data'] .= $data;
}
}
/**
* Callback for actions.
*/
function node_export_xml_action_form($context, &$form_state) {
return node_export_action_form($context, $form_state, 'xml');
}