Zend_Pdf_Parser Class Reference

Public Member Functions
	getPDFLength ()
	getPDFString ()
	getPDFVersion ()
	getTrailer ()
	__construct ($source, Zend_Pdf_ElementFactory_Interface $factory, $load)
	__destruct ()

Detailed Description

Definition at line 38 of file Parser.php.

Constructor & Destructor Documentation

__construct()

__construct	(		$source,
		Zend_Pdf_ElementFactory_Interface	$factory,
			$load
	)

Object constructor

Note: PHP duplicates string, which is sent by value, only of it's updated. Thus we don't need to care about overhead

Parameters

mixed	$source
Zend_Pdf_ElementFactory_Interface	$factory
boolean	$load

Exceptions

Zend_Exception

Todo:

To support PDF versions 1.5 (Acrobat 6) and PDF version 1.7 (Acrobat 7) Stream compression filter must be implemented (for compressed object streams). Cross reference streams must be implemented

Go to end of cross-reference table offset

Go to the start of cross-reference table offset

Go to the end of 'startxref' keyword

Go to the white space (eol marker) before 'startxref' keyword

Definition at line 362 of file Parser.php.

    {
        if ($load) {
            if (($pdfFile = @fopen($source, 'rb')) === false ) {
                #require_once 'Zend/Pdf/Exception.php';
                throw new Zend_Pdf_Exception( "Can not open '$source' file for reading." );
            }

            $data = '';
            $byteCount = filesize($source);
            while ($byteCount > 0 && !feof($pdfFile)) {
                $nextBlock = fread($pdfFile, $byteCount);
                if ($nextBlock === false) {
                    #require_once 'Zend/Pdf/Exception.php';
                    throw new Zend_Pdf_Exception( "Error occured while '$source' file reading." );
                }

                $data .= $nextBlock;
                $byteCount -= strlen($nextBlock);
            }
            if ($byteCount != 0) {
                #require_once 'Zend/Pdf/Exception.php';
                throw new Zend_Pdf_Exception( "Error occured while '$source' file reading." );
            }
            fclose($pdfFile);

            $this->_stringParser = new Zend_Pdf_StringParser($data, $factory);
        } else {
            $this->_stringParser = new Zend_Pdf_StringParser($source, $factory);
        }

        $pdfVersionComment = $this->_stringParser->readComment();
        if (substr($pdfVersionComment, 0, 5) != '%PDF-') {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception('File is not a PDF.');
        }

        $pdfVersion = substr($pdfVersionComment, 5);
        if (version_compare($pdfVersion, '0.9',  '<')  ||
            version_compare($pdfVersion, '1.61', '>=')
           ) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception(sprintf('Unsupported PDF version. Zend_Pdf supports PDF 1.0-1.4. Current version - \'%f\'', $pdfVersion));
        }
        $this->_pdfVersion = $pdfVersion;

        $this->_stringParser->offset = strrpos($this->_stringParser->data, '%%EOF');
        if ($this->_stringParser->offset === false ||
            strlen($this->_stringParser->data) - $this->_stringParser->offset > 7) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception('Pdf file syntax error. End-of-fle marker expected at the end of file.');
        }

        $this->_stringParser->offset--;
        while (Zend_Pdf_StringParser::isWhiteSpace( ord($this->_stringParser->data[$this->_stringParser->offset]) )&&
               ($this->_stringParser->offset > 0)) {
            $this->_stringParser->offset--;
        }
        while ( (!Zend_Pdf_StringParser::isWhiteSpace( ord($this->_stringParser->data[$this->_stringParser->offset]) ))&&
               ($this->_stringParser->offset > 0)) {
            $this->_stringParser->offset--;
        }
        while (Zend_Pdf_StringParser::isWhiteSpace( ord($this->_stringParser->data[$this->_stringParser->offset]) )&&
               ($this->_stringParser->offset > 0)) {
            $this->_stringParser->offset--;
        }
        $this->_stringParser->offset -= 9;

        $nextLexeme = $this->_stringParser->readLexeme();
        if ($nextLexeme != 'startxref') {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception(sprintf('Pdf file syntax error. \'startxref\' keyword expected. Offset - 0x%X.', $this->_stringParser->offset-strlen($nextLexeme)));
        }

        $startXref = $this->_stringParser->readLexeme();
        if (!ctype_digit($startXref)) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception(sprintf('Pdf file syntax error. Cross-reference table offset must contain only digits. Offset - 0x%X.', $this->_stringParser->offset-strlen($nextLexeme)));
        }

        $this->_trailer = $this->_loadXRefTable($startXref);
        $factory->setObjectCount($this->_trailer->Size->value);
    }

__destruct()

__destruct

(

)

Object destructor

Definition at line 468 of file Parser.php.

    {
        $this->_stringParser->cleanUp();
    }

Member Function Documentation

getPDFLength()

getPDFLength

(

)

Get length of source PDF

Returns

integer

Definition at line 67 of file Parser.php.

    {
        return strlen($this->_stringParser->data);
    }

getPDFString()

getPDFString

(

)

Get PDF String

Returns

string

Definition at line 77 of file Parser.php.

    {
        return $this->_stringParser->data;
    }

getPDFVersion()

getPDFVersion

(

)

PDF version specified in the file header

Returns

string

Definition at line 87 of file Parser.php.

    {
        return $this->_pdfVersion;
    }

getTrailer()

getTrailer

(

)

Get Trailer object

Returns

Zend_Pdf_Trailer_Keeper

Definition at line 346 of file Parser.php.

    {
        return $this->_trailer;
    }

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The documentation for this class was generated from the following file:

• vendor/magento/zendframework1/library/Zend/Pdf/Parser.php