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<?php |
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namespace iio\libmergepdf; |
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use setasign\Fpdi\Fpdi; |
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use Symfony\Component\Finder\Finder; |
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use setasign\Fpdi\PdfParser\StreamReader; |
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/** |
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* Merge existing pdfs into one |
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*/ |
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class Merger |
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{ |
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/** |
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* List of pdf sources to merge |
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* |
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* @var SourceInterface[] |
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*/ |
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private $sources = []; |
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/** |
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* @var Fpdi Fpdi object |
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*/ |
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private $fpdi; |
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/** |
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* @var string Directory path used for temporary files |
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*/ |
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private $tempDir; |
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/** |
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* Constructor |
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* |
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* @param Fpdi $fpdi |
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*/ |
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public function __construct(Fpdi $fpdi = null) |
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{ |
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$this->fpdi = $fpdi ?: new Fpdi; |
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} |
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/** |
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* Add raw PDF from string |
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* |
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* Note that your PDFs are merged in the order that you add them |
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* |
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* @param string $content Raw pdf content |
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* @param Pages $pages Specification of the pages to add |
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* @return void |
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*/ |
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public function addRaw($content, Pages $pages = null) |
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{ |
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$this->sources[] = new RawSource( |
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(string)$content, |
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$pages ?: new Pages |
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); |
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} |
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/** |
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* Add PDF from filesystem path |
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* |
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* Note that your PDFs are merged in the order that you add them |
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* |
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* @param string $fname Name of file to add |
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* @param Pages $pages Pages to add from file |
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* @return void |
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* @throws Exception If $fname is not a valid file |
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*/ |
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public function addFromFile($fname, Pages $pages = null, $cleanup = null) |
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{ |
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if (!is_null($cleanup)) { |
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trigger_error('Use of $cleanup argument is deprecated', E_USER_DEPRECATED); |
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} |
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if (!is_file($fname) || !is_readable($fname)) { |
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throw new Exception("'$fname' is not a valid file"); |
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} |
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$this->sources[] = new FileSource( |
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$fname, |
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$pages ?: new Pages |
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); |
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} |
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/** |
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* Add files using iterator |
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* |
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* @param iterable $iterator Iterator or array with names of files to merge |
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* @param Pages $pages Optional pages constraint used for every added pdf |
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* @return void |
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* @throws Exception If $iterator is not valid |
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*/ |
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public function addIterator($iterator, Pages $pages = null) |
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{ |
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if (!is_array($iterator) && !$iterator instanceof \Traversable) { |
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throw new Exception("\$iterator must be traversable"); |
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} |
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foreach ($iterator as $fname) { |
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$this->addFromFile($fname, $pages); |
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} |
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} |
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/** |
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* Add files using a symfony finder |
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* |
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* @param Finder $finder |
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* @param Pages $pages Optional pages constraint used for every added pdf |
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* @return void |
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*/ |
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public function addFinder(Finder $finder, Pages $pages = null) |
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{ |
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foreach ($finder as $fileInfo) { |
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$this->addFromFile($fileInfo->getRealpath(), $pages); |
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} |
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} |
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/** |
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* Merges your provided PDFs and get raw string |
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* |
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* @return string |
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* @throws Exception If no PDFs were added |
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* @throws Exception If a specified page does not exist |
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* |
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* @TODO Should $sources be emptied after a merge? Why not implement a clear() method instead? |
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*/ |
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public function merge() |
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{ |
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if (empty($this->sources)) { |
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throw new Exception("Unable to merge, no PDFs added"); |
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} |
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/** @var string Name of source being processed */ |
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$name = ''; |
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try { |
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$fpdi = clone $this->fpdi; |
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foreach ($this->sources as $source) { |
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$name = $source->getName(); |
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/** @var int Total number of pages in pdf */ |
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$nrOfPagesInPdf = $fpdi->setSourceFile($source->getStreamReader()); |
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/** @var Pages The set of pages to merge, defaults to all pages */ |
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$pagesToMerge = $source->getPages()->hasPages() ? $source->getPages() : new Pages("1-$nrOfPagesInPdf"); |
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// Add specified pages |
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foreach ($pagesToMerge as $pageNr) { |
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$template = $fpdi->importPage($pageNr); |
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$size = $fpdi->getTemplateSize($template); |
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$fpdi->AddPage( |
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$size['width'] > $size['height'] ? 'L' : 'P', |
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[$size['width'], $size['height']] |
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); |
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$fpdi->useTemplate($template); |
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} |
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} |
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$this->sources = []; |
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return $fpdi->Output('', 'S'); |
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} catch (\Exception $e) { |
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throw new Exception("'{$e->getMessage()}' in '{$name}'", 0, $e); |
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} |
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} |
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/** |
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* Create temporary file and return name |
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* |
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* @deprecated Since version 3.1 |
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*/ |
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public function getTempFname() |
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{ |
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trigger_error( |
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'Use of getTempFname() is deprecated as temporare files are no longer created', |
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E_USER_DEPRECATED |
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); |
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return tempnam($this->getTempDir(), "libmergepdf"); |
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} |
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/** |
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* Get directory path for temporary files |
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* |
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* @deprecated Since version 3.1 |
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*/ |
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public function getTempDir() |
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{ |
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trigger_error( |
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'Use of getTempDir() is deprecated as temporare files are no longer created', |
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E_USER_DEPRECATED |
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); |
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return $this->tempDir ?: sys_get_temp_dir(); |
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} |
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/** |
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* Set directory path for temporary files |
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* |
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* @deprecated Since version 3.1 |
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*/ |
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public function setTempDir($dirname) |
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{ |
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trigger_error( |
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'Use of setTempDir() is deprecated as temporare files are no longer created', |
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E_USER_DEPRECATED |
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); |
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$this->tempDir = $dirname; |
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} |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: