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<?php
declare(strict_types = 1);
namespace iio\libmergepdf;
use iio\libmergepdf\Driver\DriverInterface;
use iio\libmergepdf\Driver\DefaultDriver;
use iio\libmergepdf\Source\SourceInterface;
use iio\libmergepdf\Source\FileSource;
use iio\libmergepdf\Source\RawSource;
/**
* Merge existing pdfs into one
*
* Note that your PDFs are merged in the order that you add them
*/
final class Merger
{
/**
* @var SourceInterface[] List of pdf sources to merge
*/
private $sources = [];
/**
* @var DriverInterface
*/
private $driver;
public function __construct(DriverInterface $driver = null)
{
$this->driver = $driver ?: new DefaultDriver;
}
/**
* Add raw PDF from string
*/
public function addRaw(string $content, PagesInterface $pages = null): void
{
$this->sources[] = new RawSource($content, $pages);
}
/**
* Add PDF from file
*/
public function addFile(string $filename, PagesInterface $pages = null): void
{
$this->sources[] = new FileSource($filename, $pages);
}
/**
* Add files using iterator
*
* @param iterable<string> $iterator Set of filenames to add
* @param PagesInterface $pages Optional pages constraint used for every added pdf
*/
public function addIterator(iterable $iterator, PagesInterface $pages = null): void
{
foreach ($iterator as $filename) {
$this->addFile($filename, $pages);
}
}
/**
* Merges loaded PDFs
*/
public function merge(): string
{
return $this->driver->merge(...$this->sources);
}
/**
* Reset internal state
*/
public function reset(): void
{
$this->sources = [];
}
}
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