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<?php |
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declare(strict_types = 1); |
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namespace Phauthentic\Presentation\Renderer; |
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use InvalidArgumentException; |
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use Phauthentic\Presentation\View\PdfViewInterface; |
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use Phauthentic\Presentation\View\ViewInterface; |
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use RuntimeException; |
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/** |
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* WkhtmlToPdf Renderer |
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*/ |
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class WkhtmlToPdfRenderer |
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{ |
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/** |
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* Binary |
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* |
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* @var string |
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*/ |
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protected $binary = '/usr/bin/wkhtmltopdf'; |
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/** |
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* Is it running on windows |
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* |
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* @var bool |
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*/ |
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protected $isWindowsEnvironment = false; |
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/** |
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* Cwd for phps proc_open fourth argument |
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* |
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* @var string|null |
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*/ |
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protected $cwd = null; |
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/** |
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* Sets the path for the wkhtmltopdf binary |
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* |
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* @return $this |
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*/ |
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public function setBinary(string $binary): self |
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{ |
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if (!file_exists($binary)) { |
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throw new InvalidArgumentException(sprintf('Binary %s does not exist', $binary)); |
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} |
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if (!is_executable($binary)) { |
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throw new RuntimeException(sprintf('%s not a binary or can not be executed', $binary)); |
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} |
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$this->binary = $binary; |
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return $this; |
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} |
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/** |
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* Constructor |
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* |
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* @param array $options Options |
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*/ |
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1 |
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public function __construct(array $options = []) |
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{ |
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$this->options = $options; |
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1 |
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$this->cwd = sys_get_temp_dir(); |
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$this->isWindowsEnvironment = strtoupper(substr(PHP_OS, 0, 3)) === 'WIN'; |
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1 |
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if ($this->isWindowsEnvironment) { |
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$this->setBinary('C:/Progra~1/wkhtmltopdf/bin/wkhtmltopdf.exe'); |
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} |
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1 |
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} |
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/** |
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* Generates Pdf from html |
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* |
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* @return string Raw PDF data |
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* @throws \Exception If no output is generated to stdout by wkhtmltopdf. |
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*/ |
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public function render(PdfViewInterface $view): string |
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{ |
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$command = $this->buildCommand($view); |
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$content = $this->exec($command, $view->getHtml()); |
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if (!empty($content['stdout'])) { |
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return $content['stdout']; |
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} |
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if (!empty($content['stderr'])) { |
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throw new RuntimeException(sprintf( |
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'System error "%s" when executing command "%s". ' . |
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'Try using the binary provided on http://wkhtmltopdf.org/downloads.html', |
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$content['stderr'], |
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$command |
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)); |
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} |
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throw new RuntimeException("WKHTMLTOPDF didn't return any data"); |
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} |
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/** |
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* Execute the WkHtmlToPdf commands for rendering pdfs |
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* |
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* @param string $cmd the command to execute |
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* @param string $input Html to pass to wkhtmltopdf |
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* @return array the result of running the command to generate the pdf |
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*/ |
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protected function exec($cmd, $input) |
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{ |
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$result = ['stdout' => '', 'stderr' => '', 'return' => '']; |
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$proc = proc_open($cmd, [0 => ['pipe', 'r'], 1 => ['pipe', 'w'], 2 => ['pipe', 'w']], $pipes, $this->cwd); |
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fwrite($pipes[0], $input); |
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fclose($pipes[0]); |
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$result['stdout'] = stream_get_contents($pipes[1]); |
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fclose($pipes[1]); |
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$result['stderr'] = stream_get_contents($pipes[2]); |
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fclose($pipes[2]); |
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$result['return'] = proc_close($proc); |
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return $result; |
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} |
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/** |
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* Get the command to render a pdf |
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* |
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* |
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* @return string the command for generating the pdf |
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*/ |
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protected function buildCommand(PdfViewInterface $pdfView): string |
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{ |
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$options = [ |
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'quiet' => true, |
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'print-media-type' => true, |
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'orientation' => $pdfView->getOrientation(), |
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'page-size' => $pdfView->getPageSize(), |
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'encoding' => $pdfView->getEncoding(), |
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'title' => $pdfView->getTitle(), |
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'javascript-delay' => $pdfView->getJsDelay(), |
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'window-status' => $pdfView->getWindowStatus(), |
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]; |
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$margin = $pdfView->getMargin(); |
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foreach ($margin as $key => $value) { |
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1 |
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if ($value !== null) { |
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$options['margin-' . $key] = $value . 'mm'; |
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} |
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} |
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$options = array_merge($options, (array)$this->options); |
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if ($this->isWindowsEnvironment) { |
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$command = '"' . $this->binary . '"'; |
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} else { |
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$command = $this->binary; |
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} |
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foreach ($options as $key => $value) { |
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if (empty($value)) { |
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continue; |
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} elseif (is_array($value)) { |
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foreach ($value as $k => $v) { |
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$command .= sprintf(' --%s %s %s', $key, escapeshellarg($k), escapeshellarg($v)); |
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} |
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} elseif ($value === true) { |
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$command .= ' --' . $key; |
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} else { |
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$command .= sprintf(' --%s %s', $key, escapeshellarg($value)); |
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} |
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} |
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$footer = $pdfView->footer(); |
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foreach ($footer as $location => $text) { |
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if ($text !== null) { |
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$command .= " --footer-$location \"" . addslashes($text) . "\""; |
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} |
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} |
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$header = $pdfView->header(); |
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foreach ($header as $location => $text) { |
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if ($text !== null) { |
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$command .= " --header-$location \"" . addslashes($text) . "\""; |
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} |
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} |
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$command .= " - -"; |
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if ($this->isWindowsEnvironment) { |
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$command = '"' . $command . '"'; |
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} |
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return $command; |
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} |
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} |
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Phauthentic /
presentation
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