class.ilExportFileParser.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("./Services/Xml/classes/class.ilSaxParser.php");
include_once "./Services/Xml/classes/class.ilXmlWriter.php";

class ilExportFileParser extends ilSaxParser
{
    protected $item_xml = "";
    
    public function __construct($a_file, $a_callback_obj, $a_callback_func)
    {
        $this->callback_obj = $a_callback_obj;
        $this->callback_func = $a_callback_func;

        parent::__construct($a_file, true);
        $this->startParsing();
    }
    
    public function setHandlers($a_xml_parser)
    {
        xml_set_object($a_xml_parser, $this);
        xml_set_element_handler($a_xml_parser, 'handleBeginTag', 'handleEndTag');
        xml_set_character_data_handler($a_xml_parser, 'handleCharacterData');
    }
    
    public function startParsing()
    {
        parent::startParsing();
    }
    
    public function handleBeginTag($a_xml_parser, $a_name, $a_attribs)
    {
        if ($this->in_export_item) {
            $this->export_item_writer->xmlStartTag($a_name, $a_attribs);
        }

        switch ($a_name) {
            case "exp:Export":
                $this->entity = $a_attribs["Entity"];
                $this->install_id = $a_attribs["InstallationId"];
                $this->install_url = $a_attribs["InstallationUrl"];
                $this->schema_version = $a_attribs["SchemaVersion"];
                break;

            case "exp:ExportItem":
                $this->in_export_item = true;
                $this->current_id = $a_attribs["Id"];

                $this->export_item_writer = new ilXmlWriter();

                $this->item_xml = "";
                $this->expfiles[] = array("component" => $a_attribs["Component"],
                    "path" => $a_attribs["Path"]);
                break;
        }
    }
    
    public function handleEndTag($a_xml_parser, $a_name)
    {
        switch ($a_name) {
            case "exp:ExportItem":
                $this->in_export_item = false;
                $cf = $this->callback_func;
                $this->callback_obj->$cf(
                    $this->entity,
                    $this->schema_version,
                    $this->current_id,
                    $this->export_item_writer->xmlDumpMem(false),
                    $this->install_id,
                    $this->install_url
                );
                break;

        }

        if ($this->in_export_item) {
            $this->export_item_writer->xmlEndTag($a_name);
        }


        $this->chr_data = "";
    }
    
    public function handleCharacterData($a_xml_parser, $a_data)
    {
        //$a_data = str_replace("<","&lt;",$a_data);
        //$a_data = str_replace(">","&gt;",$a_data);
        // DELETE WHITESPACES AND NEWLINES OF CHARACTER DATA
        //$a_data = preg_replace("/\n/","",$a_data);
        //$a_data = preg_replace("/\t+/","",$a_data);

        $this->chr_data .= $a_data;

        if ($this->in_export_item) {
            $this->export_item_writer->xmlData($a_data);
        }
    }
}