XML writer class. More...

Inheritance diagram for ilXmlWriter:

Collaboration diagram for ilXmlWriter:

Public Member Functions
	ilXmlWriter ($version="1.0", $outEnc="utf-8", $inEnc="utf-8")
	constructor
	_ilXmlWriter ()
	destructor public
	xmlSetDtdDef ($dtdDef)
	Sets dtd definition.
	xmlSetStSheet ($stSheet)
	Sets stylesheet.
	xmlSetGenCmt ($genCmt)
	Sets generated comment.
	_xmlEscapeData ($data)
	Escapes reserved characters.
	xmlEncodeData ($data)
	Encodes text from input encoding into output encoding.
	xmlFormatData ($data)
	Indents text for better reading.
	xmlFormatElement ($array)
	Callback function for xmlFormatData; do not invoke directly.
	xmlHeader ()
	Writes xml header public.
	xmlStartTag ($tag, $attrs=NULL, $empty=FALSE, $encode=TRUE, $escape=TRUE)
	Writes a starttag.
	xmlEndTag ($tag)
	Writes an endtag.
	xmlComment ($comment)
	Writes a comment.
	xmlData ($data, $encode=TRUE, $escape=TRUE)
	Writes data.
	xmlElement ($tag, $attrs=NULL, $data=Null, $encode=TRUE, $escape=TRUE)
	Writes a basic element (no children, just textual content)
	xmlDumpFile ($file, $format=TRUE)
	Dumps xml document from memory into a file.
	xmlDumpMem ($format=TRUE)
	Returns xml document from memory.
	appendXML ($a_str)
	append xml string to document
	xmlClear ()
	clears xmlStr public

Data Fields
	$xmlStr
	$version
	$outEnc
	$inEnc
	$dtdDef = ""
	$stSheet = ""
	$genCmt = "Generated by ILIAS XmlWriter"

Detailed Description

XML writer class.

Class to simplify manual writing of xml documents. It only supports writing xml sequentially, because the xml document is saved in a string with no additional structure information. The author is responsible for well-formedness and validity of the xml document.

Author: Matthias Rulinski matth.nosp@m.ias..nosp@m.rulin.nosp@m.ski@.nosp@m.mi.un.nosp@m.i-ko.nosp@m.eln.d.nosp@m.e

Version: $Id$

Definition at line 17 of file class.ilXmlWriter.php.

Member Function Documentation

ilXmlWriter::_ilXmlWriter ( )

destructor public

Definition at line 90 of file class.ilXmlWriter.php.

        {
                // terminate xml string
                unset($this->xmlStr);
        }

ilXmlWriter::_xmlEscapeData ( $data )

Escapes reserved characters.

Parameters

string input text

Returns: string escaped text static

Definition at line 132 of file class.ilXmlWriter.php.

References $data.

Referenced by xmlData(), and xmlStartTag().

        {
                $position = 0;
                $length = strlen($data);
                $escapedData = "";
                
                for(; $position < $length;)
                {
                        $character = substr($data, $position, 1);
                        $code = Ord($character);
                        
                        switch($code)
                        {
                                case 34:
                                        $character = "&quot;";
                                        break;
                                
                                case 38:
                                        $character = "&amp;";
                                        break;
                                
                                case 39:
                                        $character = "&apos;";
                                        break;
                                
                                case 60:
                                        $character = "&lt;";
                                        break;
                                
                                case 62:
                                        $character = "&gt;";
                                        break;
                                
                                default:
                                        if ($code < 32)
                                        {
                                                $character = ("&#".strval($code).";");
                                        }
                                        break;
                        }
                        
                        $escapedData .= $character;
                        $position ++;
                }
                return $escapedData;
        }

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ilXmlWriter::appendXML ( $a_str )

append xml string to document

Definition at line 505 of file class.ilXmlWriter.php.

Referenced by ilCourseXMLWriter\__buildMetaData(), ilDidacticTemplateLocalRoleAction\toXml(), ilObjLinkResource\toXML(), and ilDidacticTemplateLocalPolicyAction\toXml().

        {
                $this->xmlStr .= $a_str;
        }

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ilXmlWriter::ilXmlWriter	(	$version = `"1.0"`,
		$outEnc = `"utf-8"`,
		$inEnc = `"utf-8"`
	)

constructor

Parameters

string	xml version
string	output encoding
string	input encoding public

Definition at line 75 of file class.ilXmlWriter.php.

References $inEnc, $outEnc, and $version.

Referenced by ilAdvancedMDRecordXMLWriter\__construct(), ilCourseXMLWriter\ilCourseXMLWriter(), ilExerciseXMLWriter\ilExerciseXMLWriter(), ilFileXMLWriter\ilFileXMLWriter(), ilGroupXMLWriter\ilGroupXMLWriter(), ilMD2XML\ilMD2XML(), ilnetucateXMLAPI\ilnetucateXMLAPI(), ilObjectXMLWriter\ilObjectXMLWriter(), ilSoapInstallationInfoXMLWriter\ilSoapInstallationInfoXMLWriter(), ilSoapRoleObjectXMLWriter\ilSoapRoleObjectXMLWriter(), ilSoapStructureObjectXMLWriter\ilSoapStructureObjectXMLWriter(), ilUserXMLWriter\ilUserXMLWriter(), and ilXMLResultSetWriter\ilXMLResultSetWriter().

        {
                // initialize xml string
                $this->xmlStr = "";
                
                // set properties
                $this->version = $version;
                $this->outEnc = $outEnc;
                $this->inEnc = $inEnc;
        }

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ilXmlWriter::xmlClear ( )

clears xmlStr public

Definition at line 514 of file class.ilXmlWriter.php.

        {
                // reset xml string
                $this->xmlStr = "";
        }

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ilXmlWriter::xmlComment ( $comment )

Writes a comment.

Parameters

string comment public

Definition at line 385 of file class.ilXmlWriter.php.

Referenced by xmlHeader().

        {
                $this->xmlStr .= "<!--".$comment."-->";
        }

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ilXmlWriter::xmlData	(	$data,
		$encode = `TRUE`,
		$escape = `TRUE`
	)

Writes data.

Parameters

string	data
string	ecode data (TRUE) or not (FALSE)
string	escape data (TRUE) or not (FALSE) public

Definition at line 397 of file class.ilXmlWriter.php.

References $data, _xmlEscapeData(), and xmlEncodeData().

Referenced by xmlElement().

        {
                // encode
                if ($encode)
                {
                    $data = $this->xmlEncodeData($data);
                }
                
                // escape
                if ($escape)
                {
                        $data = ilXmlWriter::_xmlEscapeData($data);
            }
                
                $this->xmlStr .= $data;
        }

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ilXmlWriter::xmlDumpFile	(	$file,
		$format = `TRUE`
	)

Dumps xml document from memory into a file.

Parameters

string	file name (full path)
boolean	indent text (TRUE) or not (FALSE) public

Reimplemented in ilTestResultsToXML.

Definition at line 452 of file class.ilXmlWriter.php.

References $file, $xmlStr, and xmlFormatData().

        {
                // open file
                if (!($fp = @fopen($file,"w+")))
                {
                        die ("<b>Error</b>: Could not open \"".$file."\" for writing".
                                        " in <b>".__FILE__."</b> on line <b>".__LINE__."</b><br />");
                }
                
                // set file permissions
                chmod($file, 0770);
                
                // format xml data
                if ($format)
                {
                        $xmlStr = $this->xmlFormatData($this->xmlStr);
                }
                else
                {
                        $xmlStr = $this->xmlStr;
                }
                
                // write xml data into the file
                fwrite($fp, $xmlStr);
                
                // close file
                fclose($fp);
        }

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ilXmlWriter::xmlDumpMem ( $format = TRUE )

Returns xml document from memory.

Parameters

boolean indent text (TRUE) or not (FALSE)

Returns: string xml document public

Reimplemented in ilTestResultsToXML.

Definition at line 487 of file class.ilXmlWriter.php.

References $xmlStr, and xmlFormatData().

Referenced by ilXMLResultSetWriter\getXML(), ilSoapInstallationInfoXMLWriter\getXML(), ilMD2XML\getXML(), ilSoapStructureObjectXMLWriter\getXML(), ilContainerReferenceXmlWriter\getXml(), ilCategoryXmlWriter\getXml(), ilUserXMLWriter\getXML(), ilGroupXMLWriter\getXML(), ilCourseXMLWriter\getXML(), ilSoapRoleObjectXMLWriter\getXML(), ilExerciseXMLWriter\getXML(), ilObjectXMLWriter\getXML(), ilFileXMLWriter\getXML(), ilForumXMLWriter\getXML(), and ilnetucateXMLAPI\sendRequest().

        {
                // format xml data
                if ($format)
                {
                        $xmlStr = $this->xmlFormatData($this->xmlStr);
                }
                else
                {
                        $xmlStr = $this->xmlStr;
                }
                
                return $xmlStr;
        }

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ilXmlWriter::xmlElement	(	$tag,
		$attrs = `NULL`,
		$data = `Null`,
		$encode = `TRUE`,
		$escape = `TRUE`
	)

Writes a basic element (no children, just textual content)

Parameters

string	tag name
array	attributes (name => value)
string	data
boolean	ecode attributes' values and data (TRUE) or not (FALSE)
boolean	escape attributes' values and data (TRUE) or not (FALSE) public

Definition at line 423 of file class.ilXmlWriter.php.

References $data, xmlData(), xmlEndTag(), and xmlStartTag().

        {
                // check for existing data (element's content)
                if (is_string($data) or
                        is_integer($data) or
                        is_float($data))
                {
                        // write starttag
                        $this->xmlStartTag($tag, $attrs, FALSE, $encode, $escape);
                        
                        // write text
                        $this->xmlData($data, $encode, $escape);
                        
                        // write endtag
                        $this->xmlEndTag($tag);
                }
                else // no data
                {
                        // write starttag (= empty tag)
                        $this->xmlStartTag($tag, $attrs, TRUE, $encode, $escape);
                }
        }

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ilXmlWriter::xmlEncodeData ( $data )

Encodes text from input encoding into output encoding.

Parameters

string input text

Returns: string encoded text private

Definition at line 185 of file class.ilXmlWriter.php.

References $data.

Referenced by xmlData(), and xmlStartTag().

        {
                if ($this->inEnc == $this->outEnc)
                {
                        $encodedData = $data;
                }
                else
                {
                        switch(strtolower($this->outEnc))
                        {
                                case "utf-8":
                                        if(strtolower($this->inEnc) == "iso-8859-1")
                                        {
                                                $encodedData = utf8_encode($data);
                                        }
                                        else
                                        {
                                                die ("<b>Error</b>: Cannot encode iso-8859-1 data in ".$this->outEnc.
                                                                " in <b>".__FILE__."</b> on line <b>".__LINE__."</b><br />");
                                        }
                                        break;
                                
                                case "iso-8859-1":
                                        if(strtolower($this->inEnc) == "utf-8")
                                        {
                                                $encodedData = utf8_decode($data);
                                        }
                                        else
                                        {
                                                die ("<b>Error</b>: Cannot encode utf-8 data in ".$this->outEnc.
                                                                " in <b>".__FILE__."</b> on line <b>".__LINE__."</b><br />");
                                        }
                                        break;
                                        
                                default:
                                        die ("<b>Error</b>: Cannot encode ".$this->inEnc." data in ".$this->outEnc.
                                                        " in <b>".__FILE__."</b> on line <b>".__LINE__."</b><br />");
                        }
                }
                return $encodedData;
        }

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ilXmlWriter::xmlEndTag ( $tag )

Writes an endtag.

Parameters

string tag name public

Definition at line 375 of file class.ilXmlWriter.php.

        {
                $this->xmlStr .= "</".$tag.">";
        }

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ilXmlWriter::xmlFormatData ( $data )

Indents text for better reading.

Parameters

string input text

Returns: string indented text private

Reimplemented in ilnetucateXMLAPI.

Definition at line 233 of file class.ilXmlWriter.php.

References $data.

Referenced by xmlDumpFile(), and xmlDumpMem().

        {
                // regular expression for tags
                $formatedXml = preg_replace_callback("|<[^>]*>[^<]*|", array($this, "xmlFormatElement"), $data);
                
                return $formatedXml;
        }

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ilXmlWriter::xmlFormatElement ( $array )

Callback function for xmlFormatData; do not invoke directly.

Parameters

array result of reg. expr. search

Returns: string indented substring private

Definition at line 247 of file class.ilXmlWriter.php.

References $tab.

        {
                $found = trim($array[0]);
                
                static $indent;
                
                // linebreak (default)
                $nl = "\n";
                
                $tab = str_repeat(" ", $indent * 2);
                
                // closing tag
                if (substr($found, 0, 2) == "</")
                {
                        if($indent)
                        {
                                $indent --;
                        }
                        $tab = str_repeat(" ", $indent * 2);
                }
                elseif (substr($found, -2, 1) == "/" or // opening and closing, comment, ...
                                strpos($found, "/>") or
                                substr($found, 0, 2) == "<!") 
                {
                        // do not change indent
                }
                elseif (substr($found, 0, 2) == "<?") 
                {
                        // do not change indent
                        // no linebreak
                        $nl = "";
                }
                else // opening tag
                {
                        $indent ++;
                }
                
                // content
                if (substr($found, -1) != ">")
                {
                        $found = str_replace(">", ">\n".str_repeat(" ", ($indent + 0) * 2), $found);
                }
                
                return $nl.$tab.$found;
        }

ilXmlWriter::xmlHeader ( )

Writes xml header public.

Definition at line 297 of file class.ilXmlWriter.php.

References $dtdDef, $stSheet, $xmlStr, and xmlComment().

        {
                // version and encoding
                $this->xmlStr .= "<?xml version=\"".$this->version."\" encoding=\"".$this->outEnc."\"?>";
                
                // dtd definition
                if ($this->dtdDef <> "")
                {
                        $this->xmlStr .= $this->dtdDef;
                }
                
                // stSheet
                if ($this->stSheet <> "")
                {
                        $this->xmlStr .= $this->stSheet;
                }
                
                // generated comment
                if ($this->genCmt <> "")
                {
                        $this->xmlComment($this->genCmt);
                }
                
                return $xmlStr;
        }

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ilXmlWriter::xmlSetDtdDef ( $dtdDef )

Sets dtd definition.

Parameters

string dtd definition public

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

References $dtdDef.

        {
                $this->dtdDef = $dtdDef;
        }

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ilXmlWriter::xmlSetGenCmt ( $genCmt )

Sets generated comment.

Parameters

string generated comment public

Definition at line 121 of file class.ilXmlWriter.php.

References $genCmt.

        {
                $this->genCmt = $genCmt;
        }

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ilXmlWriter::xmlSetStSheet ( $stSheet )

Sets stylesheet.

Parameters

string stylesheet public

Definition at line 111 of file class.ilXmlWriter.php.

References $stSheet.

        {
                $this->stSheet = $stSheet;
        }

ilXmlWriter::xmlStartTag	(	$tag,
		$attrs = `NULL`,
		$empty = `FALSE`,
		$encode = `TRUE`,
		$escape = `TRUE`
	)

Writes a starttag.

Parameters

string	tag name
array	attributes (name => value)
boolean	tag empty (TRUE) or not (FALSE)
boolean	ecode attributes' values (TRUE) or not (FALSE)
boolean	escape attributes' values (TRUE) or not (FALSE) public

Definition at line 332 of file class.ilXmlWriter.php.

References _xmlEscapeData(), and xmlEncodeData().

        {
                // write first part of the starttag
                $this->xmlStr .= "<".$tag;
                
                // check for existing attributes
                if (is_array($attrs))
                {
                        // write attributes
                        foreach ($attrs as $name => $value)
                        {
                                // encode
                                if ($encode)
                                {
                                $value = $this->xmlEncodeData($value);
                                }
                                
                                // escape
                                if ($escape)
                                {
                                        $value = ilXmlWriter::_xmlEscapeData($value);
                        }
                                
                                $this->xmlStr .= " ".$name."=\"".$value."\"";
                        }
                }
                
                // write last part of the starttag
                if ($empty)
                {
                        $this->xmlStr .= "/>";
                }
                else
                {
                        $this->xmlStr .= ">";
                }
        }