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<?php
/**
* Implementation of Common Cartridge library based on
* {@link http://www.imsglobal.org/cc/ IMS Common Cartridge Standard v1.2}
*
* @author Darko Miletic
* @author Daniel Muhlrad (daniel.muhlrad@uvcms.com)
* @version 1.0
* @copyright 2009 {@link http://www.uvcms.com UVCMS e-learning}
* @package cc_library
*
*/
require_once('gral_lib/cssparser.php');
/**
* Base XML class
*
*/
class XMLGenericDocument {
private $charset;
/**
* Document
* @var DOMDocument
*/
public $doc = null;
/**
*
* Xpath
* @var DOMXPath
*/
protected $dxpath = null;
protected $filename;
private $filepath;
private $isloaded = false;
private $arrayPrefixNS = array();
private $is_html = false;
/**
* @param string $value
* @return string
*/
public static function safexml($value) {
$result = htmlspecialchars(html_entity_decode($value, ENT_QUOTES, 'UTF-8'),
ENT_NOQUOTES,
'UTF-8',
false);
return $result;
}
function __construct($ch = 'UTF-8', $validatenow = true) {
$this->charset = $ch;
$this->documentInit();
$this->doc->validateOnParse = $validatenow;
}
function __destruct() {
$this->dxpath = null;
$this->doc = null;
}
private function documentInit($withonCreate = true) {
$hg = false;
if ($this->isloaded) {
$guardstate = $this->doc->validateOnParse;
$hg = true;
unset($this->dxpath);
unset($this->doc);
$this->isloaded = false;
}
$this->doc = new DOMDocument("1.0", $this->charset);
$this->doc->strictErrorChecking = true;
if ($hg) {
$this->doc->validateOnParse = $guardstate;
}
$this->doc->formatOutput = true;
$this->doc->preserveWhiteSpace = true;
if ($withonCreate) {
$this->on_create();
}
}
public function viewXML() {
return $this->doc->saveXML();
}
public function registerNS($prefix, $nsuri) {
$this->arrayPrefixNS[$prefix] = $nsuri;
}
public function load($fname) {
// Sine xml will remain loaded should the repeated load fail we should recreate document to be empty.
$this->documentInit(false);
$this->isloaded = $this->doc->load($fname);
if ($this->isloaded) {
$this->filename = $fname;
$this->processPath();
$this->is_html = false;
}
return $this->on_load();
}
public function loadUrl($url) {
$this->documentInit();
$this->isloaded = true;
$this->doc->loadXML( file_get_contents($url) );
$this->is_html = false;
return $this->on_load();
}
public function loadHTML($content) {
$this->documentInit();
$this->doc->validateOnParse = false;
$this->isloaded = true;
$this->doc->loadHTML($content);
$this->is_html = true;
return $this->on_load();
}
public function loadXML($content) {
$this->documentInit();
$this->doc->validateOnParse = false;
$this->isloaded = true;
$this->doc->load($content);
$this->is_html = true;
return $this->on_load();
}
public function loadHTMLFile($fname) {
// Sine xml will remain loaded should the repeated load fail
// we should recreate document to be empty.
$this->documentInit();
$this->doc->validateOnParse = false;
$this->isloaded = $this->doc->loadHTMLFile($fname);
if ($this->isloaded) {
$this->filename = $fname;
$this->processPath();
$this->is_html=true;
}
return $this->on_load();
}
public function loadXMLFile($fname) {
// Sine xml will remain loaded should the repeated load fail
// we should recreate document to be empty.
$this->documentInit();
$this->doc->validateOnParse = false;
$this->isloaded = $this->doc->load($fname);
if ($this->isloaded) {
$this->filename = $fname;
$this->processPath();
$this->is_html = true;
}
return $this->on_load();
}
public function loadString($content) {
$this->doc = new DOMDocument("1.0", $this->charset);
$content = '<virtualtag>'.$content.'</virtualtag>';
$this->doc->loadXML($content);
return true;
}
public function save() {
$this->saveTo($this->filename);
}
public function saveTo($fname) {
$status = false;
if ($this->on_save()) {
if ($this->is_html) {
$this->doc->saveHTMLFile($fname);
} else {
$this->doc->save($fname);
}
$this->filename = $fname;
$this->processPath();
$status = true;
}
return $status;
}
public function validate() {
return $this->doc->validate();
}
public function attributeValue($path, $attrname, $node = null) {
$this->chkxpath();
$result = null;
$resultlist = null;
if (is_null($node)) {
$resultlist = $this->dxpath->query($path);
} else {
$resultlist = $this->dxpath->query($path, $node);
}
if (is_object($resultlist) && ($resultlist->length > 0) && $resultlist->item(0)->hasAttribute($attrname)) {
$result = $resultlist->item(0)->getAttribute($attrname);
}
return $result;
}
/**
*
* Get's text value of the node based on xpath query
* @param string $path
* @param DOMNode $node
* @param int $count
* @return string
*/
public function nodeValue($path, $node = null, $count = 1) {
$nd = $this->node($path, $node, $count);
return $this->nodeTextValue($nd);
}
/**
*
* Get's text value of the node
* @param DOMNode $node
* @return string
*/
public function nodeTextValue($node) {
$result = '';
if (is_object($node)) {
if ($node->hasChildNodes()) {
$chnodesList = $node->childNodes;
$types = array(XML_TEXT_NODE, XML_CDATA_SECTION_NODE);
foreach ($chnodesList as $chnode) {
if (in_array($chnode->nodeType, $types)) {
$result .= $chnode->wholeText;
}
}
}
}
return $result;
}
/**
*
* Enter description here ...
* @param string $path
* @param DOMNode $nd
* @param int $count
* @return DOMNode
*/
public function node($path, $nd = null, $count = 1) {
$result = null;
$resultlist = $this->nodeList($path,$nd);
if (is_object($resultlist) && ($resultlist->length > 0)) {
$result = $resultlist->item($count - 1);
}
return $result;
}
/**
*
* Enter description here ...
* @param string $path
* @param DOMNode $node
* @return DOMNodeList
*/
public function nodeList($path, $node = null) {
$this->chkxpath();
$resultlist = null;
if (is_null($node)) {
$resultlist = $this->dxpath->query($path);
} else {
$resultlist = $this->dxpath->query($path, $node);
}
return $resultlist;
}
/**
*
* Create new attribute
* @param string $namespace
* @param string $name
* @param string $value
* @return DOMAttr
*/
public function create_attribute_ns($namespace, $name, $value = null) {
$result = $this->doc->createAttributeNS($namespace, $name);
if (!is_null($value)) {
$result->nodeValue = $value;
}
return $result;
}
/**
*
* Create new attribute
* @param string $name
* @param string $value
* @return DOMAttr
*/
public function create_attribute($name, $value = null) {
$result = $this->doc->createAttribute($name);
if (!is_null($value)) {
$result->nodeValue = $value;
}
return $result;
}
/**
*
* Adds new node
* @param DOMNode $parentnode
* @param string $namespace
* @param string $name
* @param string $value
* @return DOMNode
*/
public function append_new_element_ns(DOMNode &$parentnode, $namespace, $name, $value = null) {
$newnode = null;
if (is_null($value)) {
$newnode = $this->doc->createElementNS($namespace, $name);
} else {
$newnode = $this->doc->createElementNS($namespace, $name, $value);
}
return $parentnode->appendChild($newnode);
}
/**
*
* New node with CDATA content
* @param DOMNode $parentnode
* @param string $namespace
* @param string $name
* @param string $value
*/
public function append_new_element_ns_cdata(DOMNode &$parentnode, $namespace, $name, $value = null) {
$newnode = $this->doc->createElementNS($namespace, $name);
if (!is_null($value)) {
$cdata = $this->doc->createCDATASection($value);
$newnode->appendChild($cdata);
}
return $parentnode->appendChild($newnode);
}
/**
*
* Adds new node
* @param DOMNode $parentnode
* @param string $name
* @param string $value
* @return DOMNode
*/
public function append_new_element(DOMNode &$parentnode, $name, $value = null) {
$newnode = null;
if (is_null($value)) {
$newnode = $this->doc->createElement($name);
} else {
$newnode = $this->doc->createElement($name, $value);
}
return $parentnode->appendChild($newnode);
}
/**
*
* Adds new attribute
* @param DOMNode $node
* @param string $name
* @param string $value
* @return DOMNode
*/
public function append_new_attribute(DOMNode &$node, $name, $value = null) {
return $node->appendChild($this->create_attribute($name, $value));
}
/**
*
* Adds new attribute
* @param DOMNode $node
* @param string $namespace
* @param string $name
* @param string $value
* @return DOMNode
*/
public function append_new_attribute_ns(DOMNode &$node, $namespace, $name, $value = null) {
return $node->appendChild($this->create_attribute_ns($namespace, $name, $value));
}
public function fileName() {
return $this->filename;
}
public function filePath() {
return $this->filepath;
}
protected function on_load() {
return $this->isloaded;
}
protected function on_save() {
return true;
}
protected function on_create() {
return true;
}
public function resetXpath() {
$this->dxpath = null;
$this->chkxpath();
}
private function chkxpath() {
if (!isset($this->dxpath) || is_null($this->dxpath)) {
$this->dxpath = new DOMXPath($this->doc);
foreach ($this->arrayPrefixNS as $nskey => $nsuri) {
$this->dxpath->registerNamespace($nskey, $nsuri);
}
}
}
protected function processPath() {
$path_parts = pathinfo($this->filename);
$this->filepath = array_key_exists('dirname', $path_parts) ? $path_parts['dirname']."/" : '';
}
}