function print_pdf_requirements in Printer, email and PDF versions 7.2

Same name and namespace in other branches

1. 5.4 print_pdf/print_pdf.module \print_pdf_requirements()
2. 5.3 print_pdf/print_pdf.module \print_pdf_requirements()
3. 6 print_pdf/print_pdf.module \print_pdf_requirements()
4. 7 print_pdf/print_pdf.module \print_pdf_requirements()
5. 5.x print_pdf/print_pdf.module \print_pdf_requirements()

Implements hook_requirements().

File

print_pdf/print_pdf.install, line 142

Install, update and uninstall functions for the print_pdf module.

Code

function print_pdf_requirements($phase) {
  $requirements = array();
  $t = get_t();
  switch ($phase) {

    // At runtime, make sure that a PDF generation tool is selected.
    case 'runtime':
      $print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
      if (empty($print_pdf_pdf_tool)) {
        $requirements['print_pdf_tool'] = array(
          'title' => $t('Printer, email and PDF versions - PDF generation library'),
          'value' => $t('No PDF tool selected'),
          'description' => $t('Please configure it in the !url.', array(
            '!url' => l($t('PDF settings page'), 'admin/config/user-interface/print/pdf'),
          )),
          'severity' => REQUIREMENT_ERROR,
        );
      }
      else {

        // Tool is defined, get some data from it's handler module.
        $tool = explode('|', $print_pdf_pdf_tool);
        $function = $tool[0] . '_pdf_tool_info';
        $info = function_exists($function) ? $function() : array();

        // Is the file there?
        if (!is_file($tool[1]) || !is_readable($tool[1])) {
          $requirements['print_pdf_tool'] = array(
            'title' => $t('Printer, email and PDF versions - PDF generation library'),
            'value' => $t('File not found'),
            'description' => $t('The currently selected PDF generation library (%file) is no longer accessible.', array(
              '%file' => $tool[1],
            )),
            'severity' => REQUIREMENT_ERROR,
          );
        }
        else {

          // Get the version number.
          $function = $tool[0] . '_pdf_tool_version';
          if (function_exists($function)) {
            $version = $function($tool[1]);
            if (isset($info['min_version']) && version_compare($version, $info['min_version'], '<')) {
              $requirements['print_pdf_tool_version'] = array(
                'title' => $t('Printer, email and PDF versions - PDF generation library'),
                'value' => $t('Unsupported %lib version', array(
                  '%lib' => $info['name'],
                )),
                'description' => $t('The currently selected version of %lib (@version) is not supported. Please update to !url.', array(
                  '%lib' => $info['name'],
                  '@version' => $version,
                  '!url' => l($t('version @min or newer', array(
                    '@min' => $info['min_version'],
                  )), $info['url']),
                )),
                'severity' => REQUIREMENT_ERROR,
              );
            }
            else {
              $requirements['print_pdf_tool_version'] = array(
                'title' => $t('Printer, email and PDF versions - PDF generation library'),
                'value' => $info['name'] . ' ' . $version,
              );
            }
          }
        }

        // If auto-config is on, check for write access to the appropriate dirs.
        if (variable_get('print_pdf_autoconfig', PRINT_PDF_AUTOCONFIG_DEFAULT)) {
          $directories = array();
          if (isset($info['public_dirs'])) {
            foreach ($info['public_dirs'] as $dir) {
              $directories[] = 'public://print_pdf/' . $tool[0] . '/' . $dir;
            }
          }
          if (isset($info['tool_dirs'])) {
            foreach ($info['tool_dirs'] as $dir) {
              $directories[] = dirname($tool[1]) . '/' . $dir;
            }
          }
          foreach ($directories as $dir) {
            if (!is_dir($dir) || !is_writable($dir)) {
              $requirements['print_pdf_tool_' . $dir] = array(
                'title' => $t('%lib directory', array(
                  '%lib' => $info['name'],
                )),
                'value' => $t('Non-writable permissions'),
                'description' => $t('You must change the %libdir permissions to be writable, as %lib requires write-access to that directory.', array(
                  '%lib' => $info['name'],
                  '%libdir' => $dir,
                )),
                'severity' => REQUIREMENT_ERROR,
              );
            }
          }
        }
      }
      break;
  }
  return $requirements;
}