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Current File : /nas/content/live/attorneyexperi/wp-content/plugins/gravityforms/xml.php
<?php
if ( ! class_exists( 'GFForms' ) ) {
die();
}
/**
* Class RGXML
*
* Handles the formatting and output of XML content
*/
class RGXML {
/**
* @access private
* @var array Options
*/
private $options = array();
/**
* RGXML constructor.
*
* @access public
*
* @param array $options
*/
public function __construct( $options = array() ) {
$this->options = $options;
}
/**
* Creates an indention to be used with XML strings
*
* @access private
*
* @param string $path The path string. Depth in the path will determine depth of the indent
*
* @return string
*/
private function indent( $path ) {
$depth = sizeof( explode( "/", $path ) ) - 1;
$indent = "";
$indent = str_pad( $indent, $depth, "\t" );
return "\r\n" . $indent;
}
/**
* Serializes an array into an XML string
*
* @access public
*
* @param string $parent_node_name The parent XML node name
* @param array $data The data to serialize
* @param string $path Optional. The path inside the parent node.
*
* @return string The serialized XML string
*/
public function serialize( $parent_node_name, $data, $path = "" ) {
$xml = "";
if ( empty( $path ) ) {
$path = $parent_node_name;
$xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
}
// If this element is marked as hidden, ignore it
$option = rgar( $this->options, $path );
if ( rgar( $option, "is_hidden" ) ) {
return "";
}
$padding = $this->indent( $path );
// If the content is not an array, simply render the node
if ( ! is_array( $data ) ) {
$option = rgar( $this->options, $path );
return strlen( $data ) == 0 && ! rgar( $option, "allow_empty" ) ? "" : "$padding<$parent_node_name>" . $this->xml_value( $parent_node_name, $data ) . "</$parent_node_name>";
}
$is_associative = $this->is_assoc( $data );
$is_empty = true;
// Opening parent node
$version = $path == $parent_node_name && isset( $this->options["version"] ) ? " version=\"" . $this->options["version"] . "\"" : "";
$xml .= "{$padding}<{$parent_node_name}{$version}";
if ( $is_associative ) {
// Adding properties marked as attributes for associative arrays
foreach ( $data as $key => $obj ) {
$child_path = "$path/$key";
if ( $this->is_attribute( $child_path ) ) {
$value = $this->xml_attribute( $obj );
$option = rgar( $this->options, $child_path );
if ( strlen( $value ) > 0 || rgar( $option, "allow_empty" ) ) {
$xml .= " $key=\"$value\"";
$is_empty = false;
}
}
}
}
// Closing element start tag
$xml .= ">";
// For a regular array, the child element (if not specified in the options) will be the singular version of the parent element(i.e. <forms><form>...</form><form>...</form></forms>)
$child_node_name = isset( $this->options[$path]["array_tag"] ) ? $this->options[$path]["array_tag"] : $this->to_singular( $parent_node_name );
// Adding other properties as elements
foreach ( $data as $key => $obj ) {
$node_name = $is_associative ? $key : $child_node_name;
$child_path = "$path/$node_name";
if ( ! $this->is_attribute( $child_path ) ) {
$child_xml = $this->serialize( $node_name, $obj, $child_path );
if ( strlen( $child_xml ) > 0 ) {
$xml .= $child_xml;
$is_empty = false;
}
}
}
// Closing parent node
$xml .= "$padding</$parent_node_name>";
return $is_empty ? "" : $xml;
}
/**
* Unserializes XML into an object to be used in PHP
*
* @access public
*
* @param string $xml_string The XML string to be unserialized
*
* @return array The unserialized array
*/
public function unserialize( $xml_string ) {
$xml_string = trim( $xml_string );
$loader = libxml_disable_entity_loader( true );
$errors = libxml_use_internal_errors( true );
$xml_parser = xml_parser_create();
$values = array();
xml_parser_set_option( $xml_parser, XML_OPTION_CASE_FOLDING, false );
xml_parser_set_option( $xml_parser, XML_OPTION_SKIP_WHITE, 1 );
xml_parse_into_struct( $xml_parser, $xml_string, $values );
$object = $this->unserialize_node( $values, 0 );
xml_parser_free( $xml_parser );
libxml_use_internal_errors( $errors );
libxml_disable_entity_loader( $loader );
return $object;
}
/**
* Unserializes a node to be used in PHP
*
* @access private
*
* @param array $values The values to be unserialized
* @param string $index The index to unserialize
*
* @return array|string
*/
private function unserialize_node( $values, $index ) {
$current = isset( $values[$index] ) ? $values[$index] : false;
// Initializing current object
$obj = array();
// Each attribute becomes a property of the object
if ( isset( $current["attributes"] ) && is_array( $current["attributes"] ) ) {
foreach ( $current["attributes"] as $key => $attribute ) {
$obj[$key] = $attribute;
}
}
// For nodes without children(i.e. <title>contact us</title> or <rule fieldId="10" operator="is" />), simply return its content
if ( $current["type"] == "complete" ) {
$val = isset( $current["value"] ) ? $current["value"] : "";
return ! empty( $obj ) ? $obj : $val;
}
// Get the current node's immediate children
$children = $this->get_children( $values, $index );
if ( is_array( $children ) ) {
// If all children have the same tag, add them as regular array items (not associative)
$is_identical_tags = $this->has_identical_tags( $children );
$unserialize_as_array = $is_identical_tags
&& isset( $children[0]["tag"] )
&& isset( $this->options[$children[0]["tag"]] )
&& $this->options[$children[0]["tag"]]["unserialize_as_array"];
// Serialize every child and add it to the object (as a regular array item, or as an associative array entry)
foreach ( $children as $child ) {
$child_obj = $this->unserialize_node( $values, $child["index"] );
if ( $unserialize_as_array ) {
$obj[] = $child_obj;
} else {
$obj[$child["tag"]] = $child_obj;
}
}
}
return $obj;
}
/**
* Gets the children to be added to the parent node.
*
* @access private
*
* @param array $values The values to be added
* @param int $parent_index The index of the parent
*
* @return array
*/
private function get_children( $values, $parent_index ) {
$level = isset( $values[$parent_index]["level"] ) ? $values[$parent_index]["level"] + 1 : false;
$nodes = array();
for ( $i = $parent_index + 1, $count = sizeof( $values ); $i < $count; $i ++ ) {
$current = $values[$i];
//If we have reached the close tag for the parent node, we are done. Return the current nodes.
if ( $current["level"] == $level - 1 && $current["type"] == "close" ) {
return $nodes;
} else if ( $current["level"] == $level && ( $current["type"] == "open" || $current["type"] == "complete" ) ) {
$nodes[] = array( "tag" => $current["tag"], "index" => $i );
} //this is a child, add it to the list of nodes
}
return $nodes;
}
/**
* Checks if the nodes have identical tags
*
* @access private
*
* @param array $nodes Nodes to check
*
* @return bool
*/
private function has_identical_tags( $nodes ) {
$tag = isset( $nodes[0]["tag"] ) ? $nodes[0]["tag"] : false;
foreach ( $nodes as $node ) {
if ( $node["tag"] != $tag ) {
return false;
}
}
return true;
}
/**
* Checks is a property is an attribute
*
* @access private
*
* @param $path
*
* @return
*/
private function is_attribute( $path ) {
$option = rgar( $this->options, $path );
return rgar( $option, "is_attribute" );
}
/**
* Formats an XML value as either content or CDATA
*
* @param string $node_name The node name
* @param string $value The value to insert
*
* @return string The formatted content
*/
private function xml_value( $node_name, $value ) {
if ( strlen( $value ) == 0 ) {
return "";
}
if ( $this->xml_is_cdata( $node_name ) ) {
return $this->xml_cdata( $value );
} else {
return $this->xml_content( $value );
}
}
/**
* Escapes an XML attribute
*
* @access private
*
* @param string $value The attribute value
*
* @return string The escaped attribute
*/
private function xml_attribute( $value ) {
return esc_attr( $value );
}
/**
* Formats a value as XML CDATA
*
* @access private
*
* @param string $value The value
*
* @return string The formatted string
*/
private function xml_cdata( $value ) {
return "<![CDATA[$value" . ( ( substr( $value, - 1 ) == ']' ) ? ' ' : '' ) . "]]>";
}
/**
* Returns XML content
*
* @param string $value The value
*
* @return string
*/
private function xml_content( $value ) {
return $value;
}
/**
* Checks if an XML tag is CDATA.
*
* Always returns true when run directly from the base class.
*
* @access private
*
* @param null $node_name Not used in base class.
*
* @return bool true
*/
private function xml_is_cdata( $node_name ) {
return true;
}
/**
* Checks if an an item is an associative array
*
* @access private
*
* @param array $array The array to check
*
* @return bool True if an associative array. Otherwise, false.
*/
private function is_assoc( $array ) {
return is_array( $array ) && array_diff_key( $array, array_keys( array_keys( $array ) ) );
}
/**
* Converts a string to its singular version
*
* @access private
*
* @param string $str The string to convert
*
* @return string The string after conversion
*/
private function to_singular( $str ) {
$last3 = strtolower( substr( $str, strlen( $str ) - 3 ) );
$fourth = strtolower( substr( $str, strlen( $str ) - 4, 1 ) );
if ( $last3 == "ies" && in_array( $fourth, array( "a", "e", "i", "o", "u" ) ) ) {
return substr( $str, 0, strlen( $str ) - 3 ) . "y";
} else {
return substr( $str, 0, strlen( $str ) - 1 );
}
}
}
if ( ! function_exists( "rgar" ) ) {
/**
* Get a specific property of an array without needing to check if that property exists.
*
* Provide a default value if you want to return a specific value if the property is not set.
*
* @since Unknown
* @access public
*
* @param array $array Array from which the property's value should be retrieved.
* @param string $prop Name of the property to be retrieved.
* @param string $default Optional. Value that should be returned if the property is not set or empty. Defaults to null.
*
* @return null|string|mixed The value
*/
function rgar( $array, $prop, $default = null ) {
if ( ! is_array( $array ) && ! ( is_object( $array ) && $array instanceof ArrayAccess ) ) {
return $default;
}
if ( isset( $array[ $prop ] ) ) {
$value = $array[ $prop ];
} else {
$value = '';
}
return empty( $value ) && $default !== null ? $default : $value;
}
}
