function advagg_relocate_get_remote_font_data in Advanced CSS/JS Aggregation 7.2

Gets external CSS files; caches it and returns css font rules.

Parameters

string $url: URL of the CSS file to import.

array $aggregate_settings: Array of settings.

Return value

array Array of font data.

2 calls to advagg_relocate_get_remote_font_data()

advagg_relocate_css_alter in advagg_relocate/advagg_relocate.module

Implements hook_css_alter().

_advagg_relocate_callback in advagg_relocate/advagg_relocate.advagg.inc

Gets external CSS files and puts the contents of it in the aggregate.

File

advagg_relocate/advagg_relocate.advagg.inc, line 691

Advanced aggregation relocate module.

Code

function advagg_relocate_get_remote_font_data($url, array $aggregate_settings) {

  // Set default settings if needed.
  $font_type_defaults = array(
    'woff2' => 'woff2',
    'woff' => 'woff',
    'ttf' => 'ttf',
  );
  if (!isset($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'])) {
    $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'] = variable_get('advagg_relocate_css_inline_import_browsers', $font_type_defaults);
  }

  // Make sure advagg_relocate_css_inline_import_browsers is an array.
  if (!is_array($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'])) {
    $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'] = array(
      $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'] => $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'],
    );
  }

  // Use defaults if no matches for known font types.
  if (!isset($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['woff2']) && !isset($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['woff']) && !isset($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['ttf']) && !isset($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['eot']) && !isset($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['svg'])) {
    $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'] += $font_type_defaults;
  }

  // Set arguments for drupal_http_request().
  $options = array(
    'headers' => array(
      'Accept-Encoding' => 'gzip, deflate',
      'Connection' => 'close',
      'Referer' => $GLOBALS['base_root'] . request_uri(),
    ),
    'timeout' => 8,
    'version' => '1.0',
  );
  if (function_exists('brotli_uncompress')) {
    $options['headers']['Accept-Encoding'] .= ', br';
  }

  // If protocol relative, force https.
  if (strpos($url, '//') === 0) {
    $url = advagg_force_https_path($url);
  }

  // Build CID.
  $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'] = array_filter($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']);
  $fonts = implode(',', $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']);
  $cid = "advagg_relocate_css_inline_import:{$fonts}:{$url}";

  // Try local cache.
  $cached_data = cache_get($cid, 'cache_advagg_info');
  if (!empty($cached_data->data[0])) {
    if ($cached_data->expire >= REQUEST_TIME) {
      return $cached_data->data[0];
    }
    else {

      // Set header for 304 response.
      // $options['headers']['If-None-Match'] = $response->headers['etag'];.
      $options['headers']['If-Modified-Since'] = gmdate('D, d M Y H:i:s T', $cached_data->created);
    }
  }

  // Get external data.
  $responses = array();
  if (module_exists('httprl')) {

    // Get ttf.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['ttf'])) {
      $options['#font-type'] = 'ttf';
      httprl_request($url . '#ttf', $options);
    }

    // Get eot.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['eot'])) {
      $options['#font-type'] = 'eot';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)';
      httprl_request($url . '#eot', $options);
    }

    // Get svg.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['svg'])) {
      $options['#font-type'] = 'svg';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (iPad; U; CPU OS 3_2_2 like Mac OS X; nl-nl) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B500 Safari/531.21.10';
      httprl_request($url . '#svg', $options);
    }

    // Get woff.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['woff'])) {
      $options['#font-type'] = 'woff';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)';
      httprl_request($url . '#woff', $options);
    }

    // Get woff2.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['woff2'])) {
      $options['#font-type'] = 'woff2';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.1';
      httprl_request($url . '#woff2', $options);
    }
    $responses = httprl_send_request();
  }
  if (empty($responses)) {

    // Get ttf.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['ttf'])) {
      $options['#font-type'] = 'ttf';
      $responses['ttf'] = drupal_http_request($url . '#ttf', $options);
      if (!isset($responses['ttf']->options)) {
        $responses['ttf']->options = $options;
      }
      if (!isset($responses[$url]->url)) {
        $responses['ttf']->url = $url . '#ttf';
      }
    }

    // Get eot.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['eot'])) {
      $options['#font-type'] = 'eot';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)';
      $responses['eot'] = drupal_http_request($url . '#eot', $options);
      if (!isset($responses['eot']->options)) {
        $responses['eot']->options = $options;
      }
      if (!isset($responses[$url]->url)) {
        $responses['eot']->url = $url . '#eot';
      }
    }

    // Get svg.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['svg'])) {
      $options['#font-type'] = 'svg';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (iPad; U; CPU OS 3_2_2 like Mac OS X; nl-nl) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B500 Safari/531.21.10';
      $responses['svg'] = drupal_http_request($url . '#svg', $options);
      if (!isset($responses['svg']->options)) {
        $responses['svg']->options = $options;
      }
      if (!isset($responses[$url]->url)) {
        $responses['svg']->url = $url . '#svg';
      }
    }

    // Get woff.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['woff'])) {
      $options['#font-type'] = 'woff';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)';
      $responses['woff'] = drupal_http_request($url . '#woff', $options);
      if (!isset($responses['woff']->options)) {
        $responses['woff']->options = $options;
      }
      if (!isset($responses[$url]->url)) {
        $responses['woff']->url = $url . '#woff';
      }
    }

    // Get woff2.
    if (!empty($aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers']['woff2'])) {
      $options['#font-type'] = 'woff2';
      $options['headers']['User-Agent'] = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.1';
      $responses['woff2'] = drupal_http_request($url . '#woff2', $options);
      if (!isset($responses['woff2']->options)) {
        $responses['woff2']->options = $options;
      }
      if (!isset($responses[$url]->url)) {
        $responses['woff2']->url = $url . '#woff2';
      }
    }
  }

  // Try failures again.
  advagg_relocate_try_failures_again($responses);

  // Parse data.
  $font_faces = array();
  $ttl = 0;
  foreach ($responses as $key => $response) {
    if ($response->code == 304 && !empty($cached_data->data[0])) {

      // This might need to be better handled in the future.
      return $cached_data->data[0];
    }

    // Set the font type if not set.
    if (empty($response->options['#font-type'])) {
      if (!is_numeric($key)) {
        $response->options['#font-type'] = $key;
      }
      else {
        continue;
      }
    }
    if ($response->code != 200 && $response->code != 201 && $response->code != 202 && $response->code != 206) {
      return array();
    }
    if (empty($response->data)) {
      return array();
    }
    advagg_relocate_process_http_request($response, 'font');
    $ttl = max($ttl, $response->ttl);

    // Parse the CSS.
    $font_face = advagg_relocate_parse_css_font_face($response->data, array(
      'font-family',
      'font-style',
      'font-weight',
      'src',
    ), $response->options['#font-type']);

    // Format into a better data structure and combine.
    foreach ($font_face as $k => $values) {
      if (!isset($font_faces[$k])) {
        $font_faces[$k] = $font_face[$k];
        continue;
      }
      foreach ($values as $index => $value) {
        if (!in_array($value, $font_faces[$k])) {
          if ($index === $response->options['#font-type']) {
            $font_faces[$k][$index] = $values[$index];
          }
          else {
            $font_faces[$k][] = $values[$index];
          }
        }
      }
    }
  }

  // Save data to the cache.
  if (!empty($font_faces)) {
    cache_set($cid, array(
      $font_faces,
      $responses,
    ), 'cache_advagg_info', REQUEST_TIME + $ttl);
  }
  return $font_faces;
}