function createDifferenceObject($fromData, $toData)
{
$changes = new eZXMLTextDiff();
$contentINI = eZINI::instance('content.ini');
$useSimplifiedXML = $contentINI->variable('ContentVersionDiffSettings', 'UseSimplifiedXML');
$diffSimplifiedXML = $useSimplifiedXML == 'enabled';
$oldXMLTextObject = $fromData->content();
$newXMLTextObject = $toData->content();
$oldXML = $oldXMLTextObject->attribute('xml_data');
$newXML = $newXMLTextObject->attribute('xml_data');
$simplifiedXML = new eZSimplifiedXMLEditOutput();
$domOld = new DOMDocument('1.0', 'utf-8');
$domOld->preserveWhiteSpace = false;
$domOld->loadXML($oldXML);
$domNew = new DOMDocument('1.0', 'utf-8');
$domNew->preserveWhiteSpace = false;
$domNew->loadXML($newXML);
$old = $simplifiedXML->performOutput($domOld);
$new = $simplifiedXML->performOutput($domNew);
if (!$diffSimplifiedXML) {
$old = trim(strip_tags($old));
$new = trim(strip_tags($new));
$pattern = array('/[ ][ ]+/', '/ \\n( \\n)+/', '/^ /m', '/(\\n){3,}/');
$replace = array(' ', "\n", '', "\n\n");
$old = preg_replace($pattern, $replace, $old);
$new = preg_replace($pattern, $replace, $new);
}
$oldArray = explode("\n", $old);
$newArray = explode("\n", $new);
$oldSums = array();
foreach ($oldArray as $paragraph) {
$oldSums[] = crc32($paragraph);
}
$newSums = array();
foreach ($newArray as $paragraph) {
$newSums[] = crc32($paragraph);
}
$textDiffer = new eZDiffTextEngine();
$pre = $textDiffer->preProcess($oldSums, $newSums);
$out = $textDiffer->createOutput($pre, $oldArray, $newArray);
$changes->setChanges($out);
return $changes;
}
function inputXML()
{
$contentObjectAttribute = $this->ContentObjectAttribute;
$contentObjectAttributeID = $contentObjectAttribute->attribute('id');
$originalInput = 'originalInput_' . $contentObjectAttributeID;
$isInputValid = 'isInputValid_' . $contentObjectAttributeID;
if (isset($GLOBALS[$isInputValid]) and $GLOBALS[$isInputValid] == false) {
$output = $GLOBALS[$originalInput];
} else {
$dom = new DOMDocument('1.0', 'utf-8');
$success = $dom->loadXML($this->XMLData);
$editOutput = new eZSimplifiedXMLEditOutput();
$dom->formatOutput = true;
if (eZDebugSetting::isConditionTrue('kernel-datatype-ezxmltext', eZDebug::LEVEL_DEBUG)) {
eZDebug::writeDebug($dom->saveXML(), eZDebugSetting::changeLabel('kernel-datatype-ezxmltext', __METHOD__ . ' xml string stored in database'));
}
$output = $editOutput->performOutput($dom);
}
return $output;
}
