Modules/File/classes/class.ilFileXMLWriter.php

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<?php

/*
    +-----------------------------------------------------------------------------+
    | 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. |
    +-----------------------------------------------------------------------------+
*/

include_once "./classes/class.ilXmlWriter.php";


class ilFileXMLWriter extends ilXmlWriter
{
    static $CONTENT_ATTACH_NO = 0;
    static $CONTENT_ATTACH_ENCODED = 1;
    static $CONTENT_ATTACH_ZLIB_ENCODED = 2;
    static $CONTENT_ATTACH_GZIP_ENCODED = 3;
    var $attachFileContents;

        var $file;

        function ilFileXMLWriter()
        {
                parent::ilXmlWriter();
                $this->attachFileContents = ilFileXMLWriter::$CONTENT_ATTACH_NO;
        }


        function setFile(ilObjFile  $file)
        {
                $this->file = & $file;
        }




        function setAttachFileContents($attachFileContents)
        {
                 if ($attachFileContents == ilFileXMLWriter::$CONTENT_ATTACH_GZIP_ENCODED && !function_exists("gzencode"))
                 {
                      throw new ilFileException ("Inflating with gzip is not supported", ilFileException::$ID_DEFLATE_METHOD_MISMATCH);
         }
         if ($attachFileContents == ilFileXMLWriter::$CONTENT_ATTACH_ZLIB_ENCODED && !function_exists("gzcompress"))
         {
            throw new ilFileException ("Inflating with zlib (compress/uncompress) is not supported", ilFileException::$ID_DEFLATE_METHOD_MISMATCH);
         }
             $this->attachFileContents = $attachFileContents;
        }


        function start()
        {
                $this->__buildHeader();

                $attribs =array (
                  "obj_id" => "il_".IL_INST_ID."_file_".$this->file->getId(),
                  "version" => $this->file->getVersion(),
                  "size" => $this->file->getFileSize(),
                  "type" => $this->file->getFileType()
                );

        $this->xmlStartTag("File", $attribs);
        $this->xmlElement("Filename",null,$this->file->getFileName());

                $this->xmlElement("Title",  null,$this->file->getTitle());
        $this->xmlElement("Description",  null,$this->file->getDescription());


        if ($this->attachFileContents)
        {
            $filename = $this->file->getDirectory($this->file->getVersion())."/".$this->file->getFileName();
            if (@is_file($filename))
            {
                $content = @file_get_contents($filename);
                $attribs = array("mode" =>"PLAIN");
                if ($this->attachFileContents == ilFileXMLWriter::$CONTENT_ATTACH_ZLIB_ENCODED)
                {
                    $attribs ["mode"] ="ZLIB";
                    $content = @gzcompress($content, 9);
                }elseif ($this->attachFileContents == ilFileXMLWriter::$CONTENT_ATTACH_GZIP_ENCODED)
                {
                    $attribs ["mode"] ="GZIP";
                    $content = @gzencode($content, 9);
                }
                $content = base64_encode($content);
                $this->xmlElement("Content",$attribs, $content);
            }

        }

        include_once("classes/class.ilHistory.php");

                $versions = ilHistory::_getEntriesForObject($this->file->getId(), $this->file->getType());

                if (count($versions)) {
                    $this->xmlStartTag("Versions");
                    foreach ($versions as $version) {
                        $info_params = $version["info_params"];
                        list($filename,$history_id) = split(",",$info_params);
                        $attribs = array (
                          "id" => $history_id,
                          "date" => ilUtil::date_mysql2time($version["date"]),
                          "usr_id" => "il_".IL_INST_ID."_usr_".$version["user_id"]
                        );
                        $this->xmlElement("Version", $attribs);
                    }
            $this->xmlEndTag("Versions");

                }

        $this->xmlEndTag("File");

                $this->__buildFooter();

                return true;
        }

        function getXML()
        {
                return $this->xmlDumpMem(FALSE);
        }


        function __buildHeader()
        {
                $this->xmlSetDtdDef("<!DOCTYPE Exercise PUBLIC \"-//ILIAS//DTD FileAdministration//EN\" \"".ILIAS_HTTP_PATH."/xml/ilias_file_3_8.dtd\">");
                $this->xmlSetGenCmt("Exercise Object");
                $this->xmlHeader();

                return true;
        }

        function __buildFooter()
        {

        }

}


?>