OOTextExtractor.inc.php
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<?php
/**
* $Id:$
*
* KnowledgeTree Open Source Edition
* Document Management Made Simple
* Copyright (C) 2004 - 2008 The Jam Warehouse Software (Pty) Limited
*
* 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 The Jam Warehouse Software (Pty) Limited, Unit 1, Tramber Place,
* Blake Street, Observatory, 7925 South Africa. 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): ______________________________________
*
*/
class OOTextExtractor extends ExternalDocumentExtractor
{
protected $python;
protected $documentConverter;
protected $ooHost;
protected $ooPort;
protected $targetExtension;
public function __construct($targetExtension='html')
{
parent::__construct();
$this->targetExtension = $targetExtension;
$config =& KTConfig::getSingleton();
$this->python = KTUtil::findCommand('externalBinary/python');
$this->ooHost = $config->get('openoffice/host');
$this->ooPort = $config->get('openoffice/port');
$this->documentConverter = KT_DIR . '/bin/openoffice/DocumentConverter.py';
if (!is_file($this->documentConverter))
{
$this->documentConverter = false;
}
}
public function getDisplayName()
{
return _kt('OpenOffice Text Extractor');
}
public function getSupportedMimeTypes()
{
return array(
'application/msword',
'application/vnd.sun.xml.writer',
'application/vnd.sun.xml.writer.template',
'application/vnd.sun.xml.writer.global',
'application/vnd.oasis.opendocument.text',
'application/vnd.oasis.opendocument.text-template',
'application/vnd.oasis.opendocument.text-master'
);
}
public function needsIntermediateSourceFile()
{
// we need the intermediate file because it
// has the correct extension. documentConverter uses the extension to determine mimetype
return true;
}
protected function getCommandLine()
{
$sourcefile = $this->sourcefile;
unlink($this->targetfile);
$this->targetfile .= '.' . $this->targetExtension;
$targetfile = $this->targetfile;
$escape = '"';
$cmdline = "{$escape}{$this->python}{$escape} {$escape}{$this->documentConverter}{$escape} {$escape}{$sourcefile}{$escape} {$escape}{$targetfile}{$escape} {$this->ooHost} {$this->ooPort}";
$cmdline = str_replace('\\','/',$cmdline);
return $cmdline;
}
protected function filter($text)
{
$text = preg_replace ("@(</?[^>]*>)+@", '', $text);
do
{
$old = $text;
$text= preg_replace("@([\r\n])[\s]+@",'\1', $text);
$text = preg_replace('@\ \ @',' ', $text);
$text = preg_replace("@\n\n@","\n", $text);
}
while ($old != $text);
return $text;
}
public function extractTextContent()
{
if (false === parent::extractTextContent())
{
return false;
}
if ($this->targetExtension != 'html')
{
return true;
}
$content = file_get_contents($this->targetfile);
return file_put_contents($this->targetfile, $this->filter($content));
}
public function diagnose()
{
if (false === $this->python)
{
return _kt('Cannot locate python');
}
if (false === $this->documentConverter)
{
return _kt('Cannot locate DocumentConverter.py');
}
return SearchHelper::checkOpenOfficeAvailablity();
}
}
?>