Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

367 lines
12 KiB

<?php
/**
* @file include/xml.php
*/
/**
* @brief This class contain functions to work with XML data
*
*/
class xml {
/**
* @brief Creates an XML structure out of a given array
*
* @param array $array The array of the XML structure that will be generated
* @param object $xml The createdXML will be returned by reference
* @param bool $remove_header Should the XML header be removed or not?
* @param array $namespaces List of namespaces
* @param bool $root - interally used parameter. Mustn't be used from outside.
*
* @return string The created XML
*/
public static function from_array($array, &$xml, $remove_header = false, $namespaces = array(), $root = true) {
if ($root) {
foreach($array as $key => $value) {
foreach ($namespaces AS $nskey => $nsvalue)
$key .= " xmlns".($nskey == "" ? "":":").$nskey.'="'.$nsvalue.'"';
if (is_array($value)) {
$root = new SimpleXMLElement("<".$key."/>");
self::from_array($value, $root, $remove_header, $namespaces, false);
} else
$root = new SimpleXMLElement("<".$key.">".xmlify($value)."</".$key.">");
$dom = dom_import_simplexml($root)->ownerDocument;
$dom->formatOutput = true;
$xml = $dom;
$xml_text = $dom->saveXML();
if ($remove_header)
$xml_text = trim(substr($xml_text, 21));
return $xml_text;
}
}
foreach($array as $key => $value) {
if (!isset($element) AND isset($xml))
$element = $xml;
if (is_integer($key)) {
if (isset($element))
$element[0] = $value;
continue;
}
if (substr($key, 0, 11) == "@attributes") {
if (!isset($element) OR !is_array($value))
continue;
foreach ($value as $attr_key => $attr_value) {
$element_parts = explode(":", $attr_key);
if ((count($element_parts) > 1) AND isset($namespaces[$element_parts[0]]))
$namespace = $namespaces[$element_parts[0]];
else
$namespace = NULL;
$element->addAttribute($attr_key, $attr_value, $namespace);
}
continue;
}
$element_parts = explode(":", $key);
if ((count($element_parts) > 1) AND isset($namespaces[$element_parts[0]]))
$namespace = $namespaces[$element_parts[0]];
elseif (isset($namespaces[""]))
$namespace = $namespaces[""];
else
$namespace = NULL;
if (!is_array($value))
$element = $xml->addChild($key, xmlify($value), $namespace);
elseif (is_array($value)) {
$element = $xml->addChild($key, NULL, $namespace);
self::from_array($value, $element, $remove_header, $namespaces, false);
}
}
}
/**
* @brief Copies an XML object
*
* @param object $source The XML source
* @param object $target The XML target
* @param string $elementname Name of the XML element of the target
*/
public static function copy(&$source, &$target, $elementname) {
if (count($source->children()) == 0)
$target->addChild($elementname, xmlify($source));
else {
$child = $target->addChild($elementname);
foreach ($source->children() AS $childfield => $childentry)
self::copy($childentry, $child, $childfield);
}
}
/**
* @brief Create an XML element
*
* @param object $doc XML root
* @param string $element XML element name
* @param string $value XML value
* @param array $attributes array containing the attributes
*
* @return object XML element object
*/
public static function create_element($doc, $element, $value = "", $attributes = array()) {
$element = $doc->createElement($element, xmlify($value));
foreach ($attributes AS $key => $value) {
$attribute = $doc->createAttribute($key);
$attribute->value = xmlify($value);
$element->appendChild($attribute);
}
return $element;
}
/**
* @brief Create an XML and append it to the parent object
*
* @param object $doc XML root
* @param object $parent parent object
* @param string $element XML element name
* @param string $value XML value
* @param array $attributes array containing the attributes
*/
public static function add_element($doc, $parent, $element, $value = "", $attributes = array()) {
$element = self::create_element($doc, $element, $value, $attributes);
$parent->appendChild($element);
}
/**
* @brief Convert an XML document to a normalised, case-corrected array
* used by webfinger
*
* @param object $xml_element The XML document
* @param integer $recursion_depth recursion counter for internal use - default 0
* internal use, recursion counter
*
* @return array | sring The array from the xml element or the string
*/
public static function element_to_array($xml_element, &$recursion_depth=0) {
// If we're getting too deep, bail out
if ($recursion_depth > 512) {
return(null);
}
if (!is_string($xml_element) &&
!is_array($xml_element) &&
(get_class($xml_element) == 'SimpleXMLElement')) {
$xml_element_copy = $xml_element;
$xml_element = get_object_vars($xml_element);
}
if (is_array($xml_element)) {
$result_array = array();
if (count($xml_element) <= 0) {
return (trim(strval($xml_element_copy)));
}
foreach($xml_element as $key=>$value) {
$recursion_depth++;
$result_array[strtolower($key)] =
self::element_to_array($value, $recursion_depth);
$recursion_depth--;
}
if ($recursion_depth == 0) {
$temp_array = $result_array;
$result_array = array(
strtolower($xml_element_copy->getName()) => $temp_array,
);
}
return ($result_array);
} else {
return (trim(strval($xml_element)));
}
}
/**
* @brief Convert the given XML text to an array in the XML structure.
*
* xml::to_array() will convert the given XML text to an array in the XML structure.
* Link: http://www.bin-co.com/php/scripts/xml2array/
* Portions significantly re-written by mike@macgirvin.com for Friendica
* (namespaces, lowercase tags, get_attribute default changed, more...)
*
* Examples: $array = xml::to_array(file_get_contents('feed.xml'));
* $array = xml::to_array(file_get_contents('feed.xml', true, 1, 'attribute'));
*
* @param object $contents The XML text
* @param boolean $namespaces True or false include namespace information
* in the returned array as array elements.
* @param integer $get_attributes 1 or 0. If this is 1 the function will get the attributes as well as the tag values -
* this results in a different array structure in the return value.
* @param string $priority Can be 'tag' or 'attribute'. This will change the way the resulting
* array sturcture. For 'tag', the tags are given more importance.
*
* @return array The parsed XML in an array form. Use print_r() to see the resulting array structure.
*/
public static function to_array($contents, $namespaces = true, $get_attributes=1, $priority = 'attribute') {
if(!$contents) return array();
if(!function_exists('xml_parser_create')) {
logger('xml::to_array: parser function missing');
return array();
}
libxml_use_internal_errors(true);
libxml_clear_errors();
if($namespaces)
$parser = @xml_parser_create_ns("UTF-8",':');
else
$parser = @xml_parser_create();
if(! $parser) {
logger('xml::to_array: xml_parser_create: no resource');
return array();
}
xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8");
// http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
@xml_parse_into_struct($parser, trim($contents), $xml_values);
@xml_parser_free($parser);
if(! $xml_values) {
logger('xml::to_array: libxml: parse error: ' . $contents, LOGGER_DATA);
foreach(libxml_get_errors() as $err)
logger('libxml: parse: ' . $err->code . " at " . $err->line . ":" . $err->column . " : " . $err->message, LOGGER_DATA);
libxml_clear_errors();
return;
}
//Initializations
$xml_array = array();
$parents = array();
$opened_tags = array();
$arr = array();
$current = &$xml_array; // Reference
// Go through the tags.
$repeated_tag_index = array(); // Multiple tags with same name will be turned into an array
foreach($xml_values as $data) {
unset($attributes,$value); // Remove existing values, or there will be trouble
// This command will extract these variables into the foreach scope
// tag(string), type(string), level(int), attributes(array).
extract($data); // We could use the array by itself, but this cooler.
$result = array();
$attributes_data = array();
if(isset($value)) {
if($priority == 'tag') $result = $value;
else $result['value'] = $value; // Put the value in a assoc array if we are in the 'Attribute' mode
}
//Set the attributes too.
if(isset($attributes) and $get_attributes) {
foreach($attributes as $attr => $val) {
if($priority == 'tag') $attributes_data[$attr] = $val;
else $result['@attributes'][$attr] = $val; // Set all the attributes in a array called 'attr'
}
}
// See tag status and do the needed.
if($namespaces && strpos($tag,':')) {
$namespc = substr($tag,0,strrpos($tag,':'));
$tag = strtolower(substr($tag,strlen($namespc)+1));
$result['@namespace'] = $namespc;
}
$tag = strtolower($tag);
if($type == "open") { // The starting of the tag '<tag>'
$parent[$level-1] = &$current;
if(!is_array($current) or (!in_array($tag, array_keys($current)))) { // Insert New tag
$current[$tag] = $result;
if($attributes_data) $current[$tag. '_attr'] = $attributes_data;
$repeated_tag_index[$tag.'_'.$level] = 1;
$current = &$current[$tag];
} else { // There was another element with the same tag name
if(isset($current[$tag][0])) { // If there is a 0th element it is already an array
$current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;
$repeated_tag_index[$tag.'_'.$level]++;
} else { // This section will make the value an array if multiple tags with the same name appear together
$current[$tag] = array($current[$tag],$result); // This will combine the existing item and the new item together to make an array
$repeated_tag_index[$tag.'_'.$level] = 2;
if(isset($current[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well
$current[$tag]['0_attr'] = $current[$tag.'_attr'];
unset($current[$tag.'_attr']);
}
}
$last_item_index = $repeated_tag_index[$tag.'_'.$level]-1;
$current = &$current[$tag][$last_item_index];
}
} elseif($type == "complete") { // Tags that ends in 1 line '<tag />'
//See if the key is already taken.
if(!isset($current[$tag])) { //New Key
$current[$tag] = $result;
$repeated_tag_index[$tag.'_'.$level] = 1;
if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data;
} else { // If taken, put all things inside a list(array)
if(isset($current[$tag][0]) and is_array($current[$tag])) { // If it is already an array...
// ...push the new element into that array.
$current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;
if($priority == 'tag' and $get_attributes and $attributes_data) {
$current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
}
$repeated_tag_index[$tag.'_'.$level]++;
} else { // If it is not an array...
$current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value
$repeated_tag_index[$tag.'_'.$level] = 1;
if($priority == 'tag' and $get_attributes) {
if(isset($current[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well
$current[$tag]['0_attr'] = $current[$tag.'_attr'];
unset($current[$tag.'_attr']);
}
if($attributes_data) {
$current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
}
}
$repeated_tag_index[$tag.'_'.$level]++; // 0 and 1 indexes are already taken
}
}
} elseif($type == 'close') { // End of tag '</tag>'
$current = &$parent[$level-1];
}
}
return($xml_array);
}
}
?>