class.ilFileXMLWriter.php

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<?php

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once "./Services/Xml/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;
        static $CONTENT_ATTACH_COPY = 4;

    var $attachFileContents;

        var $file;

        var $omit_header = false;

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


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


        function setOmitHeader($a_val)
        {
                $this->omit_header = $a_val;
        }

        function getOmitHeader()
        {
                return $this->omit_header;
        }

        function setFileTargetDirectories($a_rel, $a_abs)
        {
                $this->target_dir_relative = $a_rel;
                $this->target_dir_absolute = $a_abs;
        }


        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))
            {
                                if ($this->attachFileContents == ilFileXMLWriter::$CONTENT_ATTACH_COPY)
                                {
                                        $attribs = array("mode" =>"COPY");
                                        copy($filename, $this->target_dir_absolute."/".$this->file->getFileName());
                                        $content = $this->target_dir_relative."/".$this->file->getFileName();
                                        $this->xmlElement("Content",$attribs, $content);
                                }
                                else
                                {
                                        $content = @file_get_contents($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()
        {
                if (!$this->getOmitHeader())
                {
                        $this->xmlSetDtdDef("<!DOCTYPE File PUBLIC \"-//ILIAS//DTD FileAdministration//EN\" \"".ILIAS_HTTP_PATH."/xml/ilias_file_3_8.dtd\">");
                        $this->xmlSetGenCmt("Exercise Object");
                        $this->xmlHeader();
                }

                return true;
        }

        function __buildFooter()
        {

        }

}


?>