]> git.mxchange.org Git - friendica.git/blobdiff - include/xml.php
Merge pull request #3315 from Hypolite/issue/#3285
[friendica.git] / include / xml.php
index 39a9102de8bb94d76411f18709bf6cd538532550..9f7de8f33e66732fc790840eaf2e3cf3f0ea03cb 100644 (file)
@@ -1,11 +1,12 @@
 <?php
+
 /**
  * @file include/xml.php
  */
 
 
 /**
- * @brief This class contain functions to work with XML data
+ * @brief This class contain methods to work with XML data
  *
  */
 class xml {
@@ -23,12 +24,17 @@ class 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 => $nsvalue)
+                       foreach ($array as $key => $value) {
+                               foreach ($namespaces AS $nskey => $nsvalue) {
                                        $key .= " xmlns".($nskey == "" ? "":":").$nskey.'="'.$nsvalue.'"';
+                               }
 
-                               $root = new SimpleXMLElement("<".$key."/>");
-                               self::from_array($value, $root, $remove_header, $namespaces, false);
+                               if (is_array($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;
@@ -36,40 +42,66 @@ class xml {
 
                                $xml_text = $dom->saveXML();
 
-                               if ($remove_header)
+                               if ($remove_header) {
                                        $xml_text = trim(substr($xml_text, 21));
+                               }
 
                                return $xml_text;
                        }
                }
 
                foreach($array as $key => $value) {
-                       if ($key == "@attributes") {
-                               if (!isset($element) OR !is_array($value))
+                       if (!isset($element) AND isset($xml)) {
+                               $element = $xml;
+                       }
+
+                       if (is_integer($key)) {
+                               if (isset($element)) {
+                                       if (is_scalar($value)) {
+                                               $element[0] = $value;
+                                       } else {
+                                               /// @todo: handle nested array values
+                                       }
+                               }
+                               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 {
+                               $namespace = NULL;
+                       }
+
+                       // Remove undefined namespaces from the key
+                       if ((count($element_parts) > 1) AND is_null($namespace)) {
+                               $key = $element_parts[1];
+                       }
+
+                       if (substr($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]]))
+                                       if ((count($element_parts) > 1) AND isset($namespaces[$element_parts[0]])) {
                                                $namespace = $namespaces[$element_parts[0]];
-                                       else
+                                       } else {
                                                $namespace = NULL;
+                                       }
 
-                                       $element->addAttribute ($attr_key, $attr_value, $namespace);
+                                       $element->addAttribute($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]];
-                       else
-                               $namespace = NULL;
-
-                       if (!is_array($value))
+                       if (!is_array($value)) {
                                $element = $xml->addChild($key, xmlify($value), $namespace);
-                       elseif (is_array($value)) {
+                       elseif (is_array($value)) {
                                $element = $xml->addChild($key, NULL, $namespace);
                                self::from_array($value, $element, $remove_header, $namespaces, false);
                        }
@@ -88,8 +120,9 @@ class xml {
                        $target->addChild($elementname, xmlify($source));
                else {
                        $child = $target->addChild($elementname);
-                       foreach ($source->children() AS $childfield => $childentry)
+                       foreach ($source->children() AS $childfield => $childentry) {
                                self::copy($childentry, $child, $childfield);
+                       }
                }
        }
 
@@ -131,11 +164,11 @@ class xml {
        /**
         * @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 
+        * @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) {
@@ -145,11 +178,11 @@ class xml {
                        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_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($xml_element)) {
@@ -158,7 +191,7 @@ class xml {
                                return (trim(strval($xml_element_copy)));
                        }
 
-                       foreach($xml_element as $key=>$value) {
+                       foreach ($xml_element as $key => $value) {
 
                                $recursion_depth++;
                                $result_array[strtolower($key)] =
@@ -181,29 +214,31 @@ class xml {
 
        /**
         * @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 - 
+        * @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();
+       public static function to_array($contents, $namespaces = true, $get_attributes = 1, $priority = 'attribute') {
+               if (!$contents) {
+                       return array();
+               }
 
-               if(!function_exists('xml_parser_create')) {
+               if (!function_exists('xml_parser_create')) {
                        logger('xml::to_array: parser function missing');
                        return array();
                }
@@ -212,12 +247,13 @@ class xml {
                libxml_use_internal_errors(true);
                libxml_clear_errors();
 
-               if($namespaces)
+               if ($namespaces) {
                        $parser = @xml_parser_create_ns("UTF-8",':');
-               else
+               } else {
                        $parser = @xml_parser_create();
+               }
 
-               if(! $parser) {
+               if (! $parser) {
                        logger('xml::to_array: xml_parser_create: no resource');
                        return array();
                }
@@ -229,10 +265,11 @@ class xml {
                @xml_parse_into_struct($parser, trim($contents), $xml_values);
                @xml_parser_free($parser);
 
-               if(! $xml_values) {
+               if (! $xml_values) {
                        logger('xml::to_array: libxml: parse error: ' . $contents, LOGGER_DATA);
-                       foreach(libxml_get_errors() as $err)
+                       foreach (libxml_get_errors() as $err) {
                                logger('libxml: parse: ' . $err->code . " at " . $err->line . ":" . $err->column . " : " . $err->message, LOGGER_DATA);
+                       }
                        libxml_clear_errors();
                        return;
                }
@@ -247,8 +284,8 @@ class xml {
 
                // 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,$value); // Remove existing values, or there will be trouble
+               foreach ($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).
@@ -257,46 +294,54 @@ class xml {
                        $result = array();
                        $attributes_data = array();
 
-                       if(isset($value)) {
-                               if($priority == 'tag') $result = $value;
-                               else $result['value'] = $value; // Put the value in a assoc array if we are in the 'Attribute' mode
+                       if (isset($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] = $val; // Set all the attributes in a array called 'attr'
+                       if (isset($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($namespc)+1));
+                       if ($namespaces && strpos($tag, ':')) {
+                               $namespc = substr($tag, 0, strrpos($tag, ':'));
+                               $tag = strtolower(substr($tag, strlen($namespc)+1));
                                $result['@namespace'] = $namespc;
                        }
                        $tag = strtolower($tag);
 
-                       if($type == "open") {   // The starting of the tag '<tag>'
+                       if ($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
+                               if (!is_array($current) or (!in_array($tag, array_keys($current)))) { // Insert New tag
                                        $current[$tag] = $result;
-                                       if($attributes_data) $current[$tag. '_attr'] = $attributes_data;
+                                       if ($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
+                                       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
+                                               $current[$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
+                                               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']);
                                                }
@@ -306,35 +351,37 @@ class xml {
                                        $current = &$current[$tag][$last_item_index];
                                }
 
-                       } elseif($type == "complete") { // Tags that ends in 1 line '<tag />'
+                       } elseif ($type == "complete") { // Tags that ends in 1 line '<tag />'
                                //See if the key is already taken.
-                               if(!isset($current[$tag])) { //New Key
+                               if (!isset($current[$tag])) { //New Key
                                        $current[$tag] = $result;
                                        $repeated_tag_index[$tag.'_'.$level] = 1;
-                                       if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data;
+                                       if ($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...
+                                       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 $attributes_data) {
+                                               if ($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
+                                               $current[$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[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well
+                                               if ($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($attributes_data) {
+                                                       if ($attributes_data) {
                                                                $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
                                                        }
                                                }
@@ -342,12 +389,25 @@ class xml {
                                        }
                                }
 
-                       } elseif($type == 'close') { // End of tag '</tag>'
+                       } elseif ($type == 'close') { // End of tag '</tag>'
                                $current = &$parent[$level-1];
                        }
                }
 
                return($xml_array);
        }
+
+       /**
+        * @brief Delete a node in a XML object
+        * 
+        * @param object $doc XML document
+        * @param string $node Node name
+        */
+       public static function deleteNode(&$doc, $node) {
+               $xpath = new DomXPath($doc);
+               $list = $xpath->query("//".$node);
+               foreach ($list as $child) {
+                       $child->parentNode->removeChild($child);
+               }
+       }
 }
-?>