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<?php |
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/** |
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* BaconPdf |
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* |
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* @link http://github.com/Bacon/BaconPdf For the canonical source repository |
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* @copyright 2015 Ben Scholzen (DASPRiD) |
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* @license http://opensource.org/licenses/BSD-2-Clause Simplified BSD License |
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*/ |
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namespace Bacon\Pdf; |
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use Bacon\Pdf\Encryption\EncryptionInterface; |
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use Bacon\Pdf\Options\PdfWriterOptions; |
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use Bacon\Pdf\Writer\ObjectWriter; |
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use SplFileObject; |
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class PdfWriter |
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{ |
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/** |
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* @var ObjectWriter |
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*/ |
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private $objectWriter; |
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/** |
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* @var PdfWriterOptions |
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*/ |
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private $options; |
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/** |
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* @var string |
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*/ |
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private $permanentFileIdentifier; |
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/** |
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* @var string |
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*/ |
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private $changingFileIdentifier; |
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/** |
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* @var EncryptionInterface |
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*/ |
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private $encryption; |
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/** |
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* @var DocumentInformation |
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*/ |
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private $documentInformation; |
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/** |
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* @var array |
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*/ |
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private $objectOffsets = []; |
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/** |
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* @param SplFileObject $fileObject |
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* @param PdfWriterOptions $options |
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*/ |
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public function __construct(SplFileObject $fileObject, PdfWriterOptions $options = null) |
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{ |
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if (null === $options) { |
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$options = new PdfWriterOptions(); |
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} |
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$this->objectWriter = new ObjectWriter($fileObject); |
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$this->objectWriter->writeRawLine(sprintf("%PDF-%s", $this->options->getVersion())); |
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$this->objectWriter->writeRawLine("%\xff\xff\xff\xff"); |
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$this->permanentFileIdentifier = $this->changingFileIdentifier = md5(microtime(), true); |
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$this->encryption = $options->getEncryption($this->permanentFileIdentifier); |
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$this->documentInformation = new DocumentInformation(); |
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} |
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/** |
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* @return DocumentInformation |
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*/ |
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public function getDocumentInformation() |
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{ |
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return $this->documentInformation; |
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} |
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/** |
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* Closes the document by writing the file trailer. |
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* |
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* While the PDF writer will remove all references to the passed in file object in itself to avoid further writing |
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* and to allow the file pointer to be closed, the callee may still have a reference to it. If that is the case, |
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* make sure to unset it if you don't need it. |
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* |
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* Any further attempts to append data to the PDF writer will result in an exception. |
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*/ |
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public function closeDocument() |
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{ |
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$xrefOffset = $this->writeXrefTable(); |
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$this->writeTrailer(); |
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$this->writeFooter($xrefOffset); |
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} |
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/** |
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* Creates a PDF writer which writes everything to a file. |
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* |
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* @param string $filename |
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* @param PdfWriterOptions|null $options |
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* @return static |
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*/ |
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public static function toFile($filename, PdfWriterOptions $options = null) |
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{ |
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return new static(new SplFileObject($filename, 'wb'), $options); |
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} |
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/** |
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* Creates a PDF writer which outputs everything to the STDOUT. |
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* |
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* @param PdfWriterOptions|null $options |
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* @return static |
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*/ |
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public static function output(PdfWriterOptions $options = null) |
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{ |
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return new static(new SplFileObject('php://stdout', 'wb'), $options); |
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} |
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/** |
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* Writes the xref table. |
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* |
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* @return int |
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*/ |
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private function writeXrefTable() |
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{ |
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$this->objectWriter->ensureBlankLine(); |
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$xrefOffset = $this->objectWriter->currentOffset(); |
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$this->objectWriter->writeRawLine('xref'); |
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$this->objectWriter->writeRawLine(sprintf('0 %d', count($this->objectOffsets) + 1)); |
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$this->objectWriter->writeRawLine(sprintf('%010d %05d f ', 0, 65535)); |
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foreach ($this->objectOffsets as $offset) { |
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$this->objectWriter->writeRawLine(sprintf('%010d %05d n ', $offset, 0)); |
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} |
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return $xrefOffset; |
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} |
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/** |
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* Writes the trailer. |
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*/ |
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private function writeTrailer() |
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{ |
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$this->objectWriter->ensureBlankLine(); |
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$this->objectWriter->writeRawLine('trailer'); |
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$this->objectWriter->startDictionary(); |
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$this->objectWriter->writeName('Id'); |
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$this->objectWriter->startArray(); |
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$this->objectWriter->writeHexadecimalString($this->permanentFileIdentifier); |
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$this->objectWriter->writeHexadecimalString($this->changingFileIdentifier); |
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$this->objectWriter->endArray(); |
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$this->encryption->writeEncryptDictionary($this->objectWriter); |
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$this->objectWriter->endDictionary(); |
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} |
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/** |
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* Writes the footer. |
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* |
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* @param int $xrefOffset |
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*/ |
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private function writeFooter($xrefOffset) |
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{ |
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$this->objectWriter->ensureBlankLine(); |
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$this->objectWriter->writeRawLine('startxref'); |
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$this->objectWriter->writeRawLine((string) $xrefOffset); |
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$this->objectWriter->writeRawLine("%%%EOF"); |
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} |
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} |
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Bacon /
BaconPdf
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This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.