OpenOfficeTextExtractor.inc.php
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<?php
/**
* $Id:$
*
* KnowledgeTree Community Edition
* Document Management Made Simple
* Copyright (C) 2008, 2009 KnowledgeTree Inc.
*
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 3 as published by the
* Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* You can contact KnowledgeTree Inc., PO Box 7775 #87847, San Francisco,
* California 94120-7775, or email info@knowledgetree.com.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU General Public License version 3.
*
* In accordance with Section 7(b) of the GNU General Public License version 3,
* these Appropriate Legal Notices must retain the display of the "Powered by
* KnowledgeTree" logo and retain the original copyright notice. If the display of the
* logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
* must display the words "Powered by KnowledgeTree" and retain the original
* copyright notice.
* Contributor( s): ______________________________________
*
*/
require_once(KT_DIR.'/thirdparty/peclzip/pclzip.lib.php');
class OpenOfficeTextExtractor extends ExternalDocumentExtractor
{
public function __construct()
{
/* *** Replaced unzip binary with pclzip ***
$config = KTConfig::getSingleton();
$this->unzip = KTUtil::findCommand("import/unzip", 'unzip');
$this->unzip = str_replace('\\','/',$this->unzip);
$this->unzip_params = $config->get('extractorParameters/unzip', '"{source}" "{part}" -d "{target_dir}"');
*/
parent::__construct();
}
/**
* Basic function setting the display name
*
* @return string
*/
public function getDisplayName()
{
return _kt('Open Office Text Extractor');
}
public function getSupportedMimeTypes()
{
return array(
'application/vnd.oasis.opendocument.presentation',
'application/vnd.oasis.opendocument.presentation-template',
'application/vnd.oasis.opendocument.spreadsheet',
'application/vnd.oasis.opendocument.spreadsheet-template',
'application/vnd.oasis.opendocument.text',
'application/vnd.oasis.opendocument.text-template',
'application/vnd.oasis.opendocument.text-master'
);
}
public function needsIntermediateSourceFile()
{
return true;
}
protected function filter($text)
{
return preg_replace ("@(</?[^>]*>)+@", " ", $text);
}
public function extractTextContent()
{
$config = KTConfig::getSingleton();
$temp_dir = $config->get('urls/tmpDirectory');
$docid = $this->document->getId();
$time = 'ktindexer_openoffice_'. time() . '-' . $docid;
$this->openxml_dir = $temp_dir . '/' . $time;
$this->sourcefile = str_replace('\\','/',$this->sourcefile);
$this->openxml_dir = str_replace('\\','/',$this->openxml_dir);
$archive = new PclZip($this->sourcefile);
if ($archive->extract(PCLZIP_OPT_PATH, $this->openxml_dir) == 0){
$this->output = _kt('Failed to extract content');
return false;
}
/* *** Original code using the unzip binary ***
$cmd = '"' . $this->unzip . '"' . ' ' . str_replace(
array('{source}','{part}', '{target_dir}'),
array($this->sourcefile, 'content.xml',$this->openxml_dir), $this->unzip_params);
$cmd = str_replace('\\','/', $cmd);
if (!$this->exec($cmd))
{
$this->output = _kt('Failed to execute command: ') . $cmd;
return false;
}
*** End unzip code *** */
$filename = $this->openxml_dir . '/content.xml';
if (!file_exists($filename))
{
$this->output = _kt('Failed to find file: ') . $filename;
return false;
}
$result = file_put_contents($this->targetfile, $this->filter(file_get_contents($filename)));
return $result !== false;
}
/**
* Check that unzip is available
*
* @return boolean
*/
public function diagnose()
{
return null;
if (false === $this->unzip)
{
return sprintf(_kt("Cannot locate unzip: %s."), $this->unzip);
}
return null;
}
}
?>