function print_pdf_wkhtmltopdf_pdf_tool_version in Printer, email and PDF versions 7.2

Implements hook_pdf_tool_version().

2 calls to print_pdf_wkhtmltopdf_pdf_tool_version()

print_pdf_wkhtmltopdf_print_pdf_available_libs_alter in print_pdf/lib_handlers/print_pdf_wkhtmltopdf/print_pdf_wkhtmltopdf.module

Implements hook_print_pdf_available_libs_alter().

print_pdf_wkhtmltopdf_print_pdf_generate in print_pdf/lib_handlers/print_pdf_wkhtmltopdf/print_pdf_wkhtmltopdf.pages.inc

Implements hook_print_pdf_generate().

File

print_pdf/lib_handlers/print_pdf_wkhtmltopdf/print_pdf_wkhtmltopdf.module, line 57

Generate a PDF for the print_pdf module using the wkhtmltopdf library.

Code

function print_pdf_wkhtmltopdf_pdf_tool_version($pdf_tool, $reset = TRUE) {
  $version = variable_get('print_pdf_wkhtmltopdf_version', PRINT_PDF_WKHTMLTOPDF_VERSION_DEFAULT);
  if ($reset || empty($version)) {

    // Ask the version information from the executable.
    $descriptor = array(
      0 => array(
        'pipe',
        'r',
      ),
      1 => array(
        'pipe',
        'w',
      ),
      2 => array(
        'pipe',
        'w',
      ),
    );
    $cmd = '"' . realpath($pdf_tool) . '" --version';
    $process = proc_open($cmd, $descriptor, $pipes, NULL, NULL);
    if (is_resource($process)) {
      $content = stream_get_contents($pipes[1]);
      $found = preg_match('!.*?(\\d+\\.\\d+\\.\\d+).*$!m', $content, $matches);
      fclose($pipes[0]);
      fclose($pipes[1]);
      fclose($pipes[2]);
      proc_close($process);
      if ($found) {

        // Cache the results of this expensive operation.
        variable_set('print_pdf_wkhtmltopdf_version', $matches[1]);
        return $matches[1];
      }
    }
  }
  else {

    // For performance sake, usually use the cached value.
    return $version;
  }
  return 'unknown';
}