Exercise XML Parser which completes/updates a given exercise by an xml string. More...

Inheritance diagram for ilFileXMLParser:

Collaboration diagram for ilFileXMLParser:

Public Member Functions
	ilFileXMLParser (&$file, $a_xml_data, $obj_id=-1, $mode=0)
	Constructor.
	setHandlers ($a_xml_parser)
	set event handlers
	handlerBeginTag ($a_xml_parser, $a_name, $a_attribs)
	handler for begin of element
	handlerEndTag ($a_xml_parser, $a_name)
	handler for end of element
	handlerCharacterData ($a_xml_parser, $a_data)
	handler for character data
	setFileContents ()
	update file according to filename and version, does not update history has to be called after (!) file save for new objects, since file storage will be initialised with obj id.
	updateFileContents ()
	update file according to filename and version and create history entry has to be called after (!) file save for new objects, since file storage will be initialised with obj id.
	start ()
	starts parsing an changes object by side effect.
Public Member Functions inherited from ilSaxParser
	ilSaxParser ($a_xml_file= '', $throwException=false)
	Constructor setup ILIAS global object public.
	setXMLContent ($a_xml_content)
	getXMLContent ()
	getInputType ()
	startParsing ()
	stores xml data in array
	createParser ()
	create parser
	setOptions ($a_xml_parser)
	set parser options
	openXMLFile ()
	open xml file
	parse ($a_xml_parser, $a_fp=null)
	parse xml file
	freeParser ($a_xml_parser)
	free xml parser handle
	setThrowException ($throwException)
	set error handling

Data Fields
	$file
	$obj_id
	$result
	$mode
	$tmpFilename
Data Fields inherited from ilSaxParser
	$input_type = null
	$xml_content = ''
	$ilias
	$lng
	$xml_file
	$throwException = false

Static Public Attributes
static	$CONTENT_NOT_COMPRESSED = 0
static	$CONTENT_GZ_COMPRESSED = 1
static	$CONTENT_ZLIB_COMPRESSED = 2

Additional Inherited Members
Protected Member Functions inherited from ilSaxParser
	handleError ($message, $code)
	use given error handler to handle error message or internal ilias error message handle

Detailed Description

Exercise XML Parser which completes/updates a given exercise by an xml string.

Author: Roland Küstermann rolan.nosp@m.d@ku.nosp@m.ester.nosp@m.mann.nosp@m..com

Version

Id:: class.ilObjectXMLParser.php 12811 2006-12-08 18:37:44Z akill

Definition at line 41 of file class.ilFileXMLParser.php.

Member Function Documentation

ilFileXMLParser::handlerBeginTag	(	$a_xml_parser,
		$a_name,
		$a_attribs
	)

handler for begin of element

Parameters

resource	$a_xml_parser	xml parser
string	$a_name	element name
array	$a_attribs	element attributes array

Exceptions

ilFileException when obj id != - 1 and if it it does not match the id in the xml or deflation mode is not supported

Definition at line 134 of file class.ilFileXMLParser.php.

References $CONTENT_GZ_COMPRESSED, $CONTENT_NOT_COMPRESSED, $CONTENT_ZLIB_COMPRESSED, ilFileException\$ID_DEFLATE_METHOD_MISMATCH, ilFileException\$ID_MISMATCH, $ilErr, $ilLog, ilUtil\__extractId(), and ilUtil\ilTempnam().

        {
                global $ilErr;
                global $ilLog;
                
                switch($a_name)
                {
                        case 'File':
                            if (isset($a_attribs["obj_id"]))
                            {
                   $read_obj_id = ilUtil::__extractId($a_attribs["obj_id"], IL_INST_ID);
                               if ($this->obj_id != -1 && (int) $read_obj_id != -1 && (int) $this->obj_id != (int) $read_obj_id)
                               {
                       throw new ilFileException ("Object IDs (xml $read_obj_id and argument ".$this->obj_id.") do not match!", ilFileException::$ID_MISMATCH);
                   }
                            }
                if (isset($a_attribs["type"]))
                {
                                        $this->file->setFileType($a_attribs["type"]);
                }
                   $this->file->setVersion($this->file->getVersion() + 1);
                                break;
                        case 'Content':
                                $this->tmpFilename = ilUtil::ilTempnam();
                            $this->mode = ilFileXMLParser::$CONTENT_NOT_COMPRESSED;
                            $this->isReadingFile = true;
#echo $a_attribs["mode"];
                            if (isset($a_attribs["mode"])) {
                                if ($a_attribs["mode"] == "GZIP")
                                {
                        if (!function_exists("gzread"))
                            throw new ilFileException ("Deflating with gzip is not supported", ilFileException::$ID_DEFLATE_METHOD_MISMATCH);
                                    $this->mode = ilFileXMLParser::$CONTENT_GZ_COMPRESSED;
                                } elseif ($a_attribs["mode"] == "ZLIB")
                                {
                        if (!function_exists("gzuncompress"))
                             throw new ilFileException ("Deflating with zlib (compress/uncompress) is not supported", ilFileException::$ID_DEFLATE_METHOD_MISMATCH);
                                    $this->mode = ilFileXMLParser::$CONTENT_ZLIB_COMPRESSED;
                                }
                            }
                }
        }

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ilFileXMLParser::handlerCharacterData	(	$a_xml_parser,
		$a_data
	)

handler for character data

Parameters

resource	$a_xml_parser	xml parser
string	$a_data	character data

Definition at line 265 of file class.ilFileXMLParser.php.

        {
                if($a_data != "\n")
                {
                        if ($this->isReadingFile)
                        {
                        $handle = fopen ($this->tmpFilename, "a");
                                fwrite ($handle, $a_data);
                                fclose ($handle);
                        } else
                                $this->cdata .= $a_data;
                }
        }

ilFileXMLParser::handlerEndTag	(	$a_xml_parser,
		$a_name
	)

handler for end of element

Parameters

resource	$a_xml_parser	xml parser
string	$a_name	element name

Definition at line 189 of file class.ilFileXMLParser.php.

References $CONTENT_GZ_COMPRESSED, $CONTENT_ZLIB_COMPRESSED, ilFileException\$DECOMPRESSION_FAILED, $ilLog, ilFileUtils\_lookupMimeType(), ilFileUtils\fastBase64Decode(), ilFileUtils\fastGunzip(), and ilUtil\ilTempnam().

        {
            $this->cdata = trim($this->cdata);
                switch($a_name)
                {
                        case 'File':
                              $this->result = true;    
                                break;
                        case 'Filename':                            
                            if (strlen($this->cdata) == 0)
                                  throw new ilFileException("Filename ist missing!");
                            
                            $this->file->setFilename($this->cdata);
                            $this->file->setTitle($this->cdata);
                            
                                break;
                        case 'Title':
                            $this->file->setTitle(trim($this->cdata));
                            break;
                        case 'Description':
                            $this->file->setDescription(trim($this->cdata));
                                break;
                        case 'Content':
                                $this->isReadingFile = false;
                                $baseDecodedFilename = ilUtil::ilTempnam();
                            if (!ilFileUtils::fastBase64Decode($this->tmpFilename, $baseDecodedFilename)) 
                            {
                                        throw new ilFileException ("Base64-Decoding failed", ilFileException::$DECOMPRESSION_FAILED);                                                                   
                            }
                        if ($this->mode == ilFileXMLParser::$CONTENT_GZ_COMPRESSED) 
                        {
                                if (!ilFileUtils::fastGunzip ($baseDecodedFilename, $this->tmpFilename)) 
                                        {
                                                throw new ilFileException ("Deflating with fastzunzip failed", ilFileException::$DECOMPRESSION_FAILED);                         
                                        }
                                        unlink ($baseDecodedFilename);
                        }
                        elseif ($this->mode == ilFileXMLParser::$CONTENT_ZLIB_COMPRESSED) 
                        {
                                if (!ilFileUtils::fastGunzip ($baseDecodedFilename, $this->tmpFilename)) 
                                        {
                                                throw new ilFileException ("Deflating with fastDecompress failed", ilFileException::$DECOMPRESSION_FAILED);                     
                                        }
                                        unlink ($baseDecodedFilename);
                        }
                        else
                        {
                                        $this->tmpFilename = $baseDecodedFilename;
                                }                    
                                //$this->content = $content;
                                $this->file->setFileSize(filesize($this->tmpFilename)); // strlen($this->content));
                                
                                // if no file type is given => lookup mime type
                                if(!$this->file->getFileType())
                                {
                                        global $ilLog;
                                        
                                        #$ilLog->write(__METHOD__.': Trying to detect mime type...');
                                        include_once('./Services/Utilities/classes/class.ilFileUtils.php');
                                        $this->file->setFileType(ilFileUtils::_lookupMimeType($this->tmpFilename));
                                }
                                
                                break;
                }
                $this->cdata = '';
                return;
        }

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ilFileXMLParser::ilFileXMLParser	(	&	$file,
			$a_xml_data,
			$obj_id = `-1`,
			$mode = `0`
	)

Constructor.

Parameters

ilObjFile	$file	existing file object
string	$a_xml_file	xml data
int	$obj_id	obj id of exercise which is to be updated public

Definition at line 101 of file class.ilFileXMLParser.php.

References $file, $mode, $obj_id, ilSaxParser\ilSaxParser(), and ilSaxParser\setXMLContent().

        {
                parent::ilSaxParser();
                $this->file = $file;
                $this->setXMLContent($a_xml_data);
                $this->obj_id = $obj_id;
                $this->result = false;
                $this->mode = $mode;
        }

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ilFileXMLParser::setFileContents ( )

update file according to filename and version, does not update history has to be called after (!) file save for new objects, since file storage will be initialised with obj id.

Definition at line 284 of file class.ilFileXMLParser.php.

References $filename, $ilLog, and ilUtil\makeDir().

Referenced by updateFileContents().

        {
                global $ilLog;
                
                #$ilLog->write(__METHOD__.' '.filesize($this->tmpFilename));
                if (filesize ($this->tmpFilename) == 0) {
                        return;
                }
                $filedir = $this->file->getDirectory($this->file->getVersion());
                #$ilLog->write(__METHOD__.' '.$filedir);
                
                if (!is_dir($filedir))
                {
                $this->file->createDirectory();
                ilUtil::makeDir($filedir);
                }
                   
                $filename = $filedir."/".$this->file->getFileName();
                if (file_exists($filename))
                        unlink($filename);
                return rename($this->tmpFilename, $filename);
           // @file_put_contents($filename, $this->content);
        }

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ilFileXMLParser::setHandlers ( $a_xml_parser )

set event handlers

Parameters

resource reference to the xml parser private

Reimplemented from ilSaxParser.

Definition at line 118 of file class.ilFileXMLParser.php.

        {
                xml_set_object($a_xml_parser,$this);
                xml_set_element_handler($a_xml_parser,'handlerBeginTag','handlerEndTag');
                xml_set_character_data_handler($a_xml_parser,'handlerCharacterData');
        }

ilFileXMLParser::start ( )

starts parsing an changes object by side effect.

Exceptions

ilFileException when obj id != - 1 and if it it does not match the id in the xml

Returns: boolean true, if no errors happend.

Definition at line 333 of file class.ilFileXMLParser.php.

References ilSaxParser\startParsing().

                                 {
            $this->startParsing();
            return $this->result > 0;
        }

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ilFileXMLParser::updateFileContents ( )

update file according to filename and version and create history entry has to be called after (!) file save for new objects, since file storage will be initialised with obj id.

Definition at line 316 of file class.ilFileXMLParser.php.

References ilHistory\_createEntry(), and setFileContents().

        {
      if ($this->setFileContents()) 
      {
                require_once("classes/class.ilHistory.php");
                                ilHistory::_createEntry($this->file->getId(), "replace", $this->file->getFilename().",".$this->file->getVersion());
                                $this->file->addNewsNotification("file_updated");       
                        }
        }