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|
<?php
# Lifter002: TODO
# Lifter007: TODO
# Lifter003: TODO
# Lifter010: TODO
/*
+-----------------------------------------------------------------------------+
| ILIAS open source |
+-----------------------------------------------------------------------------+
| Copyright (c) 1998-2001 ILIAS open source, University of Cologne |
| |
| 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; either version 2 |
| of the License, or (at your option) any later version. |
| |
| 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
+-----------------------------------------------------------------------------+
*/
/**
* Base class for sax-based expat parsing
* extended classes need to overwrite the method setHandlers and implement their own handler methods
*
*
* @author Stefan Meyer <smeyer@databay>
*
* @package ilias-core
*/
class Ilias3SaxParser
{
/**
* XML-Content type 'file' or 'string'
* If you choose file set the filename in constructor
* If you choose 'String' call the constructor with no argument and use setXMLContent()
* @var string
* @access private
*/
var $input_type = null;
/**
* XML-Content in case of content type 'string'
* @var string
* @access private
*/
var $xml_content = '';
/**
* ilias object
* @var object ilias
* @access private
*/
var $ilias;
/**
* language object
* @var object language
* @access private
*/
var $lng;
/**
* xml filename
* @var filename
* @access private
*/
var $xml_file;
/**
* Constructor
* setup ILIAS global object
* @access public
*/
function __construct($a_xml_file = '')
{
global $ilias, $lng;
if($a_xml_file)
{
$this->xml_file = $a_xml_file;
$this->input_type = 'file';
}
$this->ilias = &$ilias;
$this->lng = &$lng;
}
function setXMLContent($a_xml_content)
{
$this->xml_content = $a_xml_content;
$this->input_type = 'string';
}
function getXMLContent()
{
return $this->xml_content;
}
function getInputType()
{
return $this->input_type;
}
/**
* stores xml data in array
*
* @access private
*/
function startParsing()
{
$xml_parser = $this->createParser();
$this->setOptions($xml_parser);
$this->setHandlers($xml_parser);
switch($this->getInputType())
{
case 'file':
$fp = $this->openXMLFile();
$this->parse($xml_parser,$fp);
break;
case 'string':
$this->parse($xml_parser);
break;
default:
echo "No input type given. Set filename in constructor or choose setXMLContent()";
break;
}
$this->freeParser($xml_parser);
}
/**
* create parser
*
* @access private
*/
function createParser()
{
$xml_parser = xml_parser_create("UTF-8");
if($xml_parser == false)
{
echo "Cannot create an XML parser handle";
}
return $xml_parser;
}
/**
* set parser options
*
* @access private
*/
function setOptions($a_xml_parser)
{
xml_parser_set_option($a_xml_parser,XML_OPTION_CASE_FOLDING,false);
}
/**
* set event handler
* should be overwritten by inherited class
* @access private
*/
function setHandlers($a_xml_parser)
{
echo 'ilSaxParser::setHandlers() must be overwritten';
}
/**
* open xml file
*
* @access private
*/
function openXMLFile()
{
if(!($fp = fopen($this->xml_file,'r')))
{
echo "Cannot open xml file";
}
return $fp;
}
/**
* parse xml file
*
* @access private
*/
function parse($a_xml_parser,$a_fp = null)
{
switch($this->getInputType())
{
case 'file':
while($data = fread($a_fp,4096))
{
$parseOk = xml_parse($a_xml_parser,$data,feof($a_fp));
}
break;
case 'string':
$parseOk = xml_parse($a_xml_parser,$this->getXMLContent());
break;
}
if(!$parseOk
&& (xml_get_error_code($a_xml_parser) != XML_ERROR_NONE))
{
echo $this->getXMLContent();
echo "XML Parse Error: ".xml_get_error_code($a_xml_parser);
}
return true;
}
/**
* free xml parser handle
*
* @access private
*/
function freeParser($a_xml_parser)
{
if(!xml_parser_free($a_xml_parser))
{
echo "Error freeing xml parser handle ";
}
}
}
?>
|
