162 lines
8.5 KiB
PHP
162 lines
8.5 KiB
PHP
<?php
|
|
/**
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; under version 2
|
|
* of the License (non-upgradable).
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* Copyright (c) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER);
|
|
* 2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV);
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* An implementation of TranslationFileReader aiming at reading RDF Translation
|
|
*
|
|
* @access public
|
|
* @author Jerome Bogaerts, <jerome.bogaerts@tudor.lu>
|
|
* @package tao
|
|
|
|
*/
|
|
class tao_helpers_translation_RDFFileReader extends tao_helpers_translation_TranslationFileReader
|
|
{
|
|
// --- ASSOCIATIONS ---
|
|
|
|
|
|
// --- ATTRIBUTES ---
|
|
|
|
// --- OPERATIONS ---
|
|
|
|
/**
|
|
* Short description of method read
|
|
*
|
|
* @access public
|
|
* @author Jerome Bogaerts, <jerome.bogaerts@tudor.lu>
|
|
* @return mixed
|
|
*/
|
|
public function read()
|
|
{
|
|
|
|
$translationUnits = [];
|
|
|
|
try {
|
|
$translationFile = $this->getTranslationFile();
|
|
} catch (tao_helpers_translation_TranslationException $e) {
|
|
$translationFile = new tao_helpers_translation_RDFTranslationFile();
|
|
}
|
|
|
|
$this->setTranslationFile($translationFile);
|
|
$inputFile = $this->getFilePath();
|
|
|
|
if (file_exists($inputFile)) {
|
|
if (is_file($inputFile)) {
|
|
if (is_readable($inputFile)) {
|
|
try {
|
|
$doc = new DOMDocument('1.0', 'UTF-8');
|
|
$doc->load($inputFile);
|
|
$xpath = new DOMXPath($doc);
|
|
$rdfNS = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
|
|
$xmlNS = 'http://www.w3.org/XML/1998/namespace';
|
|
$xpath->registerNamespace('rdf', $rdfNS);
|
|
|
|
$rootNodes = $xpath->query('//rdf:RDF');
|
|
if ($rootNodes->length == 1) {
|
|
// Try to get annotations from the root node.
|
|
$sibling = $rootNodes->item(0)->previousSibling;
|
|
while ($sibling !== null) {
|
|
if ($sibling instanceof DOMNode && $sibling->nodeType == XML_COMMENT_NODE) {
|
|
$annotations = tao_helpers_translation_RDFUtils::unserializeAnnotations($sibling->data);
|
|
$translationFile->setAnnotations($annotations);
|
|
|
|
if (isset($annotations['sourceLanguage'])) {
|
|
$translationFile->setSourceLanguage($annotations['sourceLanguage']);
|
|
}
|
|
|
|
if (isset($annotations['targetLanguage'])) {
|
|
$translationFile->setTargetLanguage($annotations['targetLanguage']);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
$sibling = $sibling->previousSibling;
|
|
}
|
|
|
|
$descriptions = $xpath->query('//rdf:Description');
|
|
foreach ($descriptions as $description) {
|
|
if ($description->hasAttributeNS($rdfNS, 'about')) {
|
|
$subject = $description->getAttributeNS($rdfNS, 'about');
|
|
|
|
// Let's retrieve properties.
|
|
foreach ($description->childNodes as $property) {
|
|
if ($property->nodeType == XML_ELEMENT_NODE) {
|
|
// Retrieve namespace uri of this node.
|
|
if ($property->namespaceURI != null) {
|
|
$predicate = $property->namespaceURI . $property->localName;
|
|
|
|
// Retrieve an hypothetic target language.
|
|
$lang = tao_helpers_translation_Utils::getDefaultLanguage();
|
|
if ($property->hasAttributeNS($xmlNS, 'lang')) {
|
|
$lang = $property->getAttributeNS($xmlNS, 'lang');
|
|
}
|
|
|
|
$object = $property->nodeValue;
|
|
|
|
$tu = new tao_helpers_translation_RDFTranslationUnit('');
|
|
$tu->setTargetLanguage($lang);
|
|
$tu->setTarget($object);
|
|
$tu->setSubject($subject);
|
|
$tu->setPredicate($predicate);
|
|
|
|
// Try to get annotations.
|
|
$sibling = $property->previousSibling;
|
|
while ($sibling !== null) {
|
|
if ($sibling instanceof DOMNode && $sibling->nodeType == XML_COMMENT_NODE) {
|
|
// We should have the annotations we are looking for.
|
|
$annotations = tao_helpers_translation_RDFUtils::unserializeAnnotations($sibling->data);
|
|
$tu->setAnnotations($annotations);
|
|
|
|
// Set the found sources and sourcelanguages if found.
|
|
if (isset($annotations['source'])) {
|
|
$tu->setSource($annotations['source']);
|
|
}
|
|
}
|
|
|
|
$sibling = $sibling->previousSibling;
|
|
}
|
|
|
|
$translationUnits[] = $tu;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->getTranslationFile()->addTranslationUnits($translationUnits);
|
|
} else {
|
|
throw new tao_helpers_translation_TranslationException("'${inputFile}' has no rdf:RDF root node or more than one rdf:RDF root node.");
|
|
}
|
|
} catch (DOMException $e) {
|
|
throw new tao_helpers_translation_TranslationException("'${inputFile}' cannot be parsed.");
|
|
}
|
|
} else {
|
|
throw new tao_helpers_translation_TranslationException("'${inputFile}' cannot be read. Check your system permissions.");
|
|
}
|
|
} else {
|
|
throw new tao_helpers_translation_TranslationException("'${inputFile}' is not a file.");
|
|
}
|
|
} else {
|
|
throw new tao_helpers_translation_TranslationException("The file '${inputFile}' does not exist.");
|
|
}
|
|
}
|
|
} /* end of clas*/
|