/lib/Zend/Pdf.php
PHP | 909 lines | 421 code | 140 blank | 348 comment | 80 complexity | fe0c1f576a891298f485dd671e158303 MD5 | raw file
- <?php
- /**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Pdf
- * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- /** Zend_Pdf_Exception */
- require_once 'Zend/Pdf/Exception.php';
- /** Zend_Pdf_Page */
- require_once 'Zend/Pdf/Page.php';
- /** Zend_Pdf_Cmap */
- require_once 'Zend/Pdf/Cmap.php';
- /** Zend_Pdf_Font */
- require_once 'Zend/Pdf/Font.php';
- /** Zend_Pdf_Style */
- require_once 'Zend/Pdf/Style.php';
- /** Zend_Pdf_Parser */
- require_once 'Zend/Pdf/Parser.php';
- /** Zend_Pdf_Trailer */
- require_once 'Zend/Pdf/Trailer.php';
- /** Zend_Pdf_Trailer_Generator */
- require_once 'Zend/Pdf/Trailer/Generator.php';
- /** Zend_Pdf_Color */
- require_once 'Zend/Pdf/Color.php';
- /** Zend_Pdf_Color_GrayScale */
- require_once 'Zend/Pdf/Color/GrayScale.php';
- /** Zend_Pdf_Color_Rgb */
- require_once 'Zend/Pdf/Color/Rgb.php';
- /** Zend_Pdf_Color_Cmyk */
- require_once 'Zend/Pdf/Color/Cmyk.php';
- /** Zend_Pdf_Color_Html */
- require_once 'Zend/Pdf/Color/Html.php';
- /** Zend_Pdf_Image */
- require_once 'Zend/Pdf/Resource/Image.php';
- /** Zend_Pdf_Image */
- require_once 'Zend/Pdf/Image.php';
- /** Zend_Pdf_Image_Jpeg */
- require_once 'Zend/Pdf/Resource/Image/Jpeg.php';
- /** Zend_Pdf_Image_Tiff */
- require_once 'Zend/Pdf/Resource/Image/Tiff.php';
- /** Zend_Pdf_Image_Png */
- require_once 'Zend/Pdf/Resource/Image/Png.php';
- /** Zend_Memory */
- require_once 'Zend/Memory.php';
- /**
- * General entity which describes PDF document.
- * It implements document abstraction with a document level operations.
- *
- * Class is used to create new PDF document or load existing document.
- * See details in a class constructor description
- *
- * Class agregates document level properties and entities (pages, bookmarks,
- * document level actions, attachments, form object, etc)
- *
- * @category Zend
- * @package Zend_Pdf
- * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Pdf
- {
- /**** Class Constants ****/
- /**
- * Version number of generated PDF documents.
- */
- const PDF_VERSION = 1.4;
- /**
- * PDF file header.
- */
- const PDF_HEADER = "%PDF-1.4\n%\xE2\xE3\xCF\xD3\n";
- /**
- * Pages collection
- *
- * @todo implement it as a class, which supports ArrayAccess and Iterator interfaces,
- * to provide incremental parsing and pages tree updating.
- * That will give good performance and memory (PDF size) benefits.
- *
- * @var array - array of Zend_Pdf_Page object
- */
- public $pages = array();
- /**
- * Document properties
- *
- * It's an associative array with PDF meta information, values may
- * be string, boolean or float.
- * Returned array could be used directly to access, add, modify or remove
- * document properties.
- *
- * Standard document properties: Title (must be set for PDF/X documents), Author,
- * Subject, Keywords (comma separated list), Creator (the name of the application,
- * that created document, if it was converted from other format), Trapped (must be
- * true, false or null, can not be null for PDF/X documents)
- *
- * @var array
- */
- public $properties = array();
- /**
- * Original properties set.
- *
- * Used for tracking properties changes
- *
- * @var array
- */
- protected $_originalProperties = array();
- /**
- * Document level javascript
- *
- * @var string
- */
- protected $_javaScript = null;
- /**
- * Document named actions
- * "GoTo..." actions, used to refer document parts
- * from outside PDF
- *
- * @var array - array of Zend_Pdf_Action objects
- */
- protected $_namedActions = array();
- /**
- * Pdf trailer (last or just created)
- *
- * @var Zend_Pdf_Trailer
- */
- protected $_trailer = null;
- /**
- * PDF objects factory.
- *
- * @var Zend_Pdf_ElementFactory_Interface
- */
- protected $_objFactory = null;
- /**
- * Memory manager for stream objects
- *
- * @var Zend_Memory_Manager|null
- */
- protected static $_memoryManager = null;
- /**
- * Pdf file parser.
- * It's not used, but has to be destroyed only with Zend_Pdf object
- *
- * @var Zend_Pdf_Parser
- */
- protected $_parser;
- /**
- * List of inheritable attributesfor pages tree
- *
- * @var array
- */
- protected static $_inheritableAttributes = array('Resources', 'MediaBox', 'CropBox', 'Rotate');
- /**
- * Request used memory manager
- *
- * @return Zend_Memory_Manager
- */
- static public function getMemoryManager()
- {
- if (self::$_memoryManager === null) {
- self::$_memoryManager = Zend_Memory::factory('none');
- }
- return self::$_memoryManager;
- }
- /**
- * Set user defined memory manager
- *
- * @param Zend_Memory_Manager $memoryManager
- */
- static public function setMemoryManager(Zend_Memory_Manager $memoryManager)
- {
- self::$_memoryManager = $memoryManager;
- }
- /**
- * Create new PDF document from a $source string
- *
- * @param string $source
- * @param integer $revision
- * @return Zend_Pdf
- */
- public static function parse(&$source = null, $revision = null)
- {
- return new Zend_Pdf($source, $revision);
- }
- /**
- * Load PDF document from a file
- *
- * @param string $source
- * @param integer $revision
- * @return Zend_Pdf
- */
- public static function load($source = null, $revision = null)
- {
- return new Zend_Pdf($source, $revision, true);
- }
- /**
- * Render PDF document and save it.
- *
- * If $updateOnly is true, then it only appends new section to the end of file.
- *
- * @param string $filename
- * @param boolean $updateOnly
- * @throws Zend_Pdf_Exception
- */
- public function save($filename, $updateOnly = false)
- {
- if (($file = @fopen($filename, $updateOnly ? 'ab':'wb')) === false ) {
- throw new Zend_Pdf_Exception( "Can not open '$filename' file for writing." );
- }
- $this->render($updateOnly, $file);
- fclose($file);
- }
- /**
- * Creates or loads PDF document.
- *
- * If $source is null, then it creates a new document.
- *
- * If $source is a string and $load is false, then it loads document
- * from a binary string.
- *
- * If $source is a string and $load is true, then it loads document
- * from a file.
- * $revision used to roll back document to specified version
- * (0 - currtent version, 1 - previous version, 2 - ...)
- *
- * @param string $source - PDF file to load
- * @param integer $revision
- * @throws Zend_Pdf_Exception
- * @return Zend_Pdf
- */
- public function __construct($source = null, $revision = null, $load = false)
- {
- $this->_objFactory = Zend_Pdf_ElementFactory::createFactory(1);
- if ($source !== null) {
- $this->_parser = new Zend_Pdf_Parser($source, $this->_objFactory, $load);
- $this->_trailer = $this->_parser->getTrailer();
- if ($this->_trailer->Encrypt !== null) {
- throw new Zend_Pdf_Exception('Encrypted document modification is not supported');
- }
- if ($revision !== null) {
- $this->rollback($revision);
- } else {
- $this->_loadPages($this->_trailer->Root->Pages);
- }
- if ($this->_trailer->Info !== null) {
- $this->properties = $this->_trailer->Info->toPhp();
- if (isset($this->properties['Trapped'])) {
- switch ($this->properties['Trapped']) {
- case 'True':
- $this->properties['Trapped'] = true;
- break;
- case 'False':
- $this->properties['Trapped'] = false;
- break;
- case 'Unknown':
- $this->properties['Trapped'] = null;
- break;
- default:
- // Wrong property value
- // Do nothing
- break;
- }
- }
- $this->_originalProperties = $this->properties;
- }
- } else {
- $trailerDictionary = new Zend_Pdf_Element_Dictionary();
- /**
- * Document id
- */
- $docId = md5(uniqid(rand(), true)); // 32 byte (128 bit) identifier
- $docIdLow = substr($docId, 0, 16); // first 16 bytes
- $docIdHigh = substr($docId, 16, 16); // second 16 bytes
- $trailerDictionary->ID = new Zend_Pdf_Element_Array();
- $trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdLow);
- $trailerDictionary->ID->items[] = new Zend_Pdf_Element_String_Binary($docIdHigh);
- $trailerDictionary->Size = new Zend_Pdf_Element_Numeric(0);
- $this->_trailer = new Zend_Pdf_Trailer_Generator($trailerDictionary);
- /**
- * Document catalog indirect object.
- */
- $docCatalog = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
- $docCatalog->Type = new Zend_Pdf_Element_Name('Catalog');
- $docCatalog->Version = new Zend_Pdf_Element_Name(Zend_Pdf::PDF_VERSION);
- $this->_trailer->Root = $docCatalog;
- /**
- * Pages container
- */
- $docPages = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
- $docPages->Type = new Zend_Pdf_Element_Name('Pages');
- $docPages->Kids = new Zend_Pdf_Element_Array();
- $docPages->Count = new Zend_Pdf_Element_Numeric(0);
- $docCatalog->Pages = $docPages;
- }
- }
- /**
- * Retrive number of revisions.
- *
- * @return integer
- */
- public function revisions()
- {
- $revisions = 1;
- $currentTrailer = $this->_trailer;
- while ($currentTrailer->getPrev() !== null && $currentTrailer->getPrev()->Root !== null ) {
- $revisions++;
- $currentTrailer = $currentTrailer->getPrev();
- }
- return $revisions++;
- }
- /**
- * Rollback document $steps number of revisions.
- * This method must be invoked before any changes, applied to the document.
- * Otherwise behavior is undefined.
- *
- * @param integer $steps
- */
- public function rollback($steps)
- {
- for ($count = 0; $count < $steps; $count++) {
- if ($this->_trailer->getPrev() !== null && $this->_trailer->getPrev()->Root !== null) {
- $this->_trailer = $this->_trailer->getPrev();
- } else {
- break;
- }
- }
- $this->_objFactory->setObjectCount($this->_trailer->Size->value);
- // Mark content as modified to force new trailer generation at render time
- $this->_trailer->Root->touch();
- $this->pages = array();
- $this->_loadPages($this->_trailer->Root->Pages);
- }
- /**
- * Load pages recursively
- *
- * @param Zend_Pdf_Element_Reference $pages
- * @param array|null $attributes
- */
- protected function _loadPages(Zend_Pdf_Element_Reference $pages, $attributes = array())
- {
- if ($pages->getType() != Zend_Pdf_Element::TYPE_DICTIONARY) {
- throw new Zend_Pdf_Exception('Wrong argument');
- }
- foreach ($pages->getKeys() as $property) {
- if (in_array($property, self::$_inheritableAttributes)) {
- $attributes[$property] = $pages->$property;
- $pages->$property = null;
- }
- }
- foreach ($pages->Kids->items as $child) {
- if ($child->Type->value == 'Pages') {
- $this->_loadPages($child, $attributes);
- } else if ($child->Type->value == 'Page') {
- foreach (self::$_inheritableAttributes as $property) {
- if ($child->$property === null && array_key_exists($property, $attributes)) {
- /**
- * Important note.
- * If any attribute or dependant object is an indirect object, then it's still
- * shared between pages.
- */
- if ($attributes[$property] instanceof Zend_Pdf_Element_Object) {
- $child->$property = $attributes[$property];
- } else {
- $child->$property = $this->_objFactory->newObject($attributes[$property]);
- }
- }
- }
- $this->pages[] = new Zend_Pdf_Page($child, $this->_objFactory);
- }
- }
- }
- /**
- * Orginize pages to tha pages tree structure.
- *
- * @todo atomatically attach page to the document, if it's not done yet.
- * @todo check, that page is attached to the current document
- *
- * @todo Dump pages as a balanced tree instead of a plain set.
- */
- protected function _dumpPages()
- {
- $pagesContainer = $this->_trailer->Root->Pages;
- $pagesContainer->touch();
- $pagesContainer->Kids->items->clear();
- foreach ($this->pages as $page ) {
- $page->render($this->_objFactory);
- $pageDictionary = $page->getPageDictionary();
- $pageDictionary->touch();
- $pageDictionary->Parent = $pagesContainer;
- $pagesContainer->Kids->items[] = $pageDictionary;
- }
- $pagesContainer->Count->touch();
- $pagesContainer->Count->value = count($this->pages);
- }
- /**
- * Create page object, attached to the PDF document.
- * Method signatures:
- *
- * 1. Create new page with a specified pagesize.
- * If $factory is null then it will be created and page must be attached to the document to be
- * included into output.
- * ---------------------------------------------------------
- * new Zend_Pdf_Page(string $pagesize);
- * ---------------------------------------------------------
- *
- * 2. Create new page with a specified pagesize (in default user space units).
- * If $factory is null then it will be created and page must be attached to the document to be
- * included into output.
- * ---------------------------------------------------------
- * new Zend_Pdf_Page(numeric $width, numeric $height);
- * ---------------------------------------------------------
- *
- * @param mixed $param1
- * @param mixed $param2
- * @return Zend_Pdf_Page
- */
- public function newPage($param1, $param2 = null)
- {
- if ($param2 === null) {
- return new Zend_Pdf_Page($param1, $this->_objFactory);
- } else {
- return new Zend_Pdf_Page($param1, $param2, $this->_objFactory);
- }
- }
- /**
- * Return the document-level Metadata
- * or null Metadata stream is not presented
- *
- * @return string
- */
- public function getMetadata()
- {
- if ($this->_trailer->Root->Metadata !== null) {
- return $this->_trailer->Root->Metadata->value;
- } else {
- return null;
- }
- }
- /**
- * Sets the document-level Metadata (mast be valid XMP document)
- *
- * @param string $metadata
- */
- public function setMetadata($metadata)
- {
- $metadataObject = $this->_objFactory->newStreamObject($metadata);
- $metadataObject->dictionary->Type = new Zend_Pdf_Element_Name('Metadata');
- $metadataObject->dictionary->Subtype = new Zend_Pdf_Element_Name('XML');
- $this->_trailer->Root->Metadata = $metadataObject;
- $this->_trailer->Root->touch();
- }
- /**
- * Return the document-level JavaScript
- * or null if there is no JavaScript for this document
- *
- * @return string
- */
- public function getJavaScript()
- {
- return $this->_javaScript;
- }
- /**
- * Return an associative array containing all the named actions in the PDF.
- * Named actions (it's always "GoTo" actions) can be used to reference from outside
- * the PDF, ex: 'http://www.something.com/mydocument.pdf#MyAction'
- *
- * @return array
- */
- public function getNamedActions()
- {
- return $this->_namedActions;
- }
- /**
- * Extract fonts attached to the document
- *
- * returns array of Zend_Pdf_Resource_Font_Extracted objects
- *
- * @return array
- */
- public function extractFonts()
- {
- $fontResourcesUnique = array();
- foreach ($this->pages as $page) {
- $pageResources = $page->extractResources();
- if ($pageResources->Font === null) {
- // Page doesn't contain have any font reference
- continue;
- }
- $fontResources = $pageResources->Font;
- foreach ($fontResources->getKeys() as $fontResourceName) {
- $fontDictionary = $fontResources->$fontResourceName;
- if (! ($fontDictionary instanceof Zend_Pdf_Element_Reference ||
- $fontDictionary instanceof Zend_Pdf_Element_Object) ) {
- // Font dictionary has to be an indirect object or object reference
- continue;
- }
- $fontResourcesUnique[$fontDictionary->toString($this->_objFactory)] = $fontDictionary;
- }
- }
- $fonts = array();
- foreach ($fontResourcesUnique as $resourceReference => $fontDictionary) {
- try {
- // Try to extract font
- $extractedFont = new Zend_Pdf_Resource_Font_Extracted($fontDictionary);
- $fonts[$resourceReference] = $extractedFont;
- } catch (Zend_Pdf_Exception $e) {
- if ($e->getMessage() != 'Unsupported font type.') {
- throw $e;
- }
- }
- }
- return $fonts;
- }
- /**
- * Extract font attached to the page by specific font name
- *
- * $fontName should be specified in UTF-8 encoding
- *
- * @return Zend_Pdf_Resource_Font_Extracted|null
- */
- public function extractFont($fontName)
- {
- $fontResourcesUnique = array();
- foreach ($this->pages as $page) {
- $pageResources = $page->extractResources();
- if ($pageResources->Font === null) {
- // Page doesn't contain have any font reference
- continue;
- }
- $fontResources = $pageResources->Font;
- foreach ($fontResources->getKeys() as $fontResourceName) {
- $fontDictionary = $fontResources->$fontResourceName;
- if (! ($fontDictionary instanceof Zend_Pdf_Element_Reference ||
- $fontDictionary instanceof Zend_Pdf_Element_Object) ) {
- // Font dictionary has to be an indirect object or object reference
- continue;
- }
- $resourceReference = $fontDictionary->toString($this->_objFactory);
- if (isset($fontResourcesUnique[$resourceReference])) {
- continue;
- } else {
- // Mark resource as processed
- $fontResourcesUnique[$resourceReference] = 1;
- }
- if ($fontDictionary->BaseFont->value != $fontName) {
- continue;
- }
- try {
- // Try to extract font
- return new Zend_Pdf_Resource_Font_Extracted($fontDictionary);
- } catch (Zend_Pdf_Exception $e) {
- if ($e->getMessage() != 'Unsupported font type.') {
- throw $e;
- }
- // Continue searhing
- }
- }
- }
- return null;
- }
- /**
- * Render the completed PDF to a string.
- * If $newSegmentOnly is true, then only appended part of PDF is returned.
- *
- * @param boolean $newSegmentOnly
- * @param resource $outputStream
- * @return string
- * @throws Zend_Pdf_Exception
- */
- public function render($newSegmentOnly = false, $outputStream = null)
- {
- // Save document properties if necessary
- if ($this->properties != $this->_originalProperties) {
- $docInfo = $this->_objFactory->newObject(new Zend_Pdf_Element_Dictionary());
- foreach ($this->properties as $key => $value) {
- switch ($key) {
- case 'Trapped':
- switch ($value) {
- case true:
- $docInfo->$key = new Zend_Pdf_Element_Name('True');
- break;
- case false:
- $docInfo->$key = new Zend_Pdf_Element_Name('False');
- break;
- case null:
- $docInfo->$key = new Zend_Pdf_Element_Name('Unknown');
- break;
- default:
- throw new Zend_Pdf_Exception('Wrong Trapped document property vale: \'' . $value . '\'. Only true, false and null values are allowed.');
- break;
- }
- case 'CreationDate':
- // break intentionally omitted
- case 'ModDate':
- $docInfo->$key = new Zend_Pdf_Element_String((string)$value);
- break;
- case 'Title':
- // break intentionally omitted
- case 'Author':
- // break intentionally omitted
- case 'Subject':
- // break intentionally omitted
- case 'Keywords':
- // break intentionally omitted
- case 'Creator':
- // break intentionally omitted
- case 'Producer':
- if (extension_loaded('mbstring') === true) {
- $detected = mb_detect_encoding($value);
- if ($detected !== 'ASCII') {
- $value = chr(254) . chr(255) . mb_convert_encoding($value, 'UTF-16', $detected);
- }
- }
- $docInfo->$key = new Zend_Pdf_Element_String((string)$value);
- break;
- default:
- // Set property using PDF type based on PHP type
- $docInfo->$key = Zend_Pdf_Element::phpToPdf($value);
- break;
- }
- }
- $this->_trailer->Info = $docInfo;
- }
- $this->_dumpPages();
- // Check, that PDF file was modified
- // File is always modified by _dumpPages() now, but future implementations may eliminate this.
- if (!$this->_objFactory->isModified()) {
- if ($newSegmentOnly) {
- // Do nothing, return
- return '';
- }
- if ($outputStream === null) {
- return $this->_trailer->getPDFString();
- } else {
- $pdfData = $this->_trailer->getPDFString();
- while ( strlen($pdfData) > 0 && ($byteCount = fwrite($outputStream, $pdfData)) != false ) {
- $pdfData = substr($pdfData, $byteCount);
- }
- return '';
- }
- }
- // offset (from a start of PDF file) of new PDF file segment
- $offset = $this->_trailer->getPDFLength();
- // Last Object number in a list of free objects
- $lastFreeObject = $this->_trailer->getLastFreeObject();
- // Array of cross-reference table subsections
- $xrefTable = array();
- // Object numbers of first objects in each subsection
- $xrefSectionStartNums = array();
- // Last cross-reference table subsection
- $xrefSection = array();
- // Dummy initialization of the first element (specail case - header of linked list of free objects).
- $xrefSection[] = 0;
- $xrefSectionStartNums[] = 0;
- // Object number of last processed PDF object.
- // Used to manage cross-reference subsections.
- // Initialized by zero (specail case - header of linked list of free objects).
- $lastObjNum = 0;
- if ($outputStream !== null) {
- if (!$newSegmentOnly) {
- $pdfData = $this->_trailer->getPDFString();
- while ( strlen($pdfData) > 0 && ($byteCount = fwrite($outputStream, $pdfData)) != false ) {
- $pdfData = substr($pdfData, $byteCount);
- }
- }
- } else {
- $pdfSegmentBlocks = ($newSegmentOnly) ? array() : array($this->_trailer->getPDFString());
- }
- // Iterate objects to create new reference table
- foreach ($this->_objFactory->listModifiedObjects() as $updateInfo) {
- $objNum = $updateInfo->getObjNum();
- if ($objNum - $lastObjNum != 1) {
- // Save cross-reference table subsection and start new one
- $xrefTable[] = $xrefSection;
- $xrefSection = array();
- $xrefSectionStartNums[] = $objNum;
- }
- if ($updateInfo->isFree()) {
- // Free object cross-reference table entry
- $xrefSection[] = sprintf("%010d %05d f \n", $lastFreeObject, $updateInfo->getGenNum());
- $lastFreeObject = $objNum;
- } else {
- // In-use object cross-reference table entry
- $xrefSection[] = sprintf("%010d %05d n \n", $offset, $updateInfo->getGenNum());
- $pdfBlock = $updateInfo->getObjectDump();
- $offset += strlen($pdfBlock);
- if ($outputStream === null) {
- $pdfSegmentBlocks[] = $pdfBlock;
- } else {
- while ( strlen($pdfBlock) > 0 && ($byteCount = fwrite($outputStream, $pdfBlock)) != false ) {
- $pdfBlock = substr($pdfBlock, $byteCount);
- }
- }
- }
- $lastObjNum = $objNum;
- }
- // Save last cross-reference table subsection
- $xrefTable[] = $xrefSection;
- // Modify first entry (specail case - header of linked list of free objects).
- $xrefTable[0][0] = sprintf("%010d 65535 f \n", $lastFreeObject);
- $xrefTableStr = "xref\n";
- foreach ($xrefTable as $sectId => $xrefSection) {
- $xrefTableStr .= sprintf("%d %d \n", $xrefSectionStartNums[$sectId], count($xrefSection));
- foreach ($xrefSection as $xrefTableEntry) {
- $xrefTableStr .= $xrefTableEntry;
- }
- }
- $this->_trailer->Size->value = $this->_objFactory->getObjectCount();
- $pdfBlock = $xrefTableStr
- . $this->_trailer->toString()
- . "startxref\n" . $offset . "\n"
- . "%%EOF\n";
- if ($outputStream === null) {
- $pdfSegmentBlocks[] = $pdfBlock;
- return implode('', $pdfSegmentBlocks);
- } else {
- while ( strlen($pdfBlock) > 0 && ($byteCount = fwrite($outputStream, $pdfBlock)) != false ) {
- $pdfBlock = substr($pdfBlock, $byteCount);
- }
- return '';
- }
- }
- /**
- * Set the document-level JavaScript
- *
- * @param string $javascript
- */
- public function setJavaScript($javascript)
- {
- $this->_javaScript = $javascript;
- }
- /**
- * Convert date to PDF format (it's close to ASN.1 (Abstract Syntax Notation
- * One) defined in ISO/IEC 8824).
- *
- * @todo This really isn't the best location for this method. It should
- * probably actually exist as Zend_Pdf_Element_Date or something like that.
- *
- * @todo Address the following E_STRICT issue:
- * PHP Strict Standards: date(): It is not safe to rely on the system's
- * timezone settings. Please use the date.timezone setting, the TZ
- * environment variable or the date_default_timezone_set() function. In
- * case you used any of those methods and you are still getting this
- * warning, you most likely misspelled the timezone identifier.
- *
- * @param integer $timestamp (optional) If omitted, uses the current time.
- * @return string
- */
- public static function pdfDate($timestamp = null)
- {
- if (is_null($timestamp)) {
- $date = date('\D\:YmdHisO');
- } else {
- $date = date('\D\:YmdHisO', $timestamp);
- }
- return substr_replace($date, '\'', -2, 0) . '\'';
- }
- }