function advagg_split_css_file in Advanced CSS/JS Aggregation 7.2

Given a file info array it will split the file up.

Parameters

array $file_info: File info array from advagg_get_info_on_file().

string $file_contents: CSS file contents.

Return value

array Array with advagg_get_info_on_file data and split data.

4 calls to advagg_split_css_file()

AdvAggCascadingStylesheetsTestCase::testRenderFile in tests/advagg.test

Tests rendering the stylesheets.

advagg_advagg_get_info_on_files_alter in ./advagg.advagg.inc

Implements hook_advagg_get_info_on_files_alter().

advagg_generate_groups in ./advagg.inc

Group the CSS/JS into the biggest buckets possible.

hook_advagg_get_info_on_files_alter in ./advagg.api.php

Let other modules add/alter additional information about files passed in.

File

./advagg.inc, line 1065

Advanced CSS/JS aggregation module.

Code

function advagg_split_css_file(array $file_info, $file_contents = '') {

  // Make advagg_parse_media_blocks() available.
  module_load_include('inc', 'advagg', 'advagg.missing');

  // Get the CSS file and break up by media queries.
  if (empty($file_contents)) {
    $file_contents = (string) @advagg_file_get_contents($file_info['data']);
  }
  $media_blocks = advagg_parse_media_blocks($file_contents);

  // Get the advagg_ie_css_selector_limiter_value.
  $selector_limit = (int) max(variable_get('advagg_ie_css_selector_limiter_value', ADVAGG_IE_CSS_SELECTOR_LIMITER_VALUE), 100);

  // Group media queries together.
  $part_selector_count = 0;
  $counter = 0;
  $values = array();
  foreach ($media_blocks as $media_block) {

    // Get the number of selectors.
    $selector_count = advagg_count_css_selectors($media_block);

    // This chunk is bigger than $selector_limit. It needs to be split.
    if ($selector_count > $selector_limit) {
      $inner_selector_count = 0;

      // Split css string.
      list($media_query, $split_css_strings) = advagg_split_css_string($media_block, $selector_limit);
      foreach ($split_css_strings as $split_css_strings) {
        $counter_changed = FALSE;
        if (empty($split_css_strings)) {
          continue;
        }

        // Make sure selector count doesn't go over selector limit.
        $inner_selector_count = advagg_count_css_selectors($split_css_strings);
        $part_selector_count += $inner_selector_count;
        if ($part_selector_count > $selector_limit) {
          if (!empty($values[$counter])) {
            ++$counter;
          }
          $counter_changed = TRUE;
          $part_selector_count = $inner_selector_count;
        }

        // Add to output array.
        if (isset($values[$counter])) {
          if (!empty($media_query)) {
            $values[$counter] .= "\n{$media_query} { {$split_css_strings} } ";
          }
          else {
            $values[$counter] .= "{$split_css_strings}";
          }
        }
        else {
          if (!empty($media_query)) {
            $values[$counter] = "{$media_query} { {$split_css_strings} } ";
          }
          else {
            $values[$counter] = $split_css_strings;
          }
        }
      }

      // Add to current selector counter and go to the next value.
      if (!$counter_changed) {
        $part_selector_count += $inner_selector_count;
      }
      continue;
    }
    $part_selector_count += $selector_count;
    if ($part_selector_count > $selector_limit) {
      if (!empty($values[$counter])) {
        ++$counter;
      }
      $values[$counter] = $media_block;
      $part_selector_count = $selector_count;
    }
    else {
      if (isset($values[$counter])) {
        $values[$counter] .= "\n{$media_block}";
      }
      else {
        $values[$counter] = $media_block;
      }
    }
  }

  // Save data.
  $parts = array();
  $overall_counter = 0;
  foreach ($values as $key => $value) {
    $last_chunk = FALSE;
    $file_info['split_last_part'] = FALSE;
    if (count($values) - 1 == $key) {
      $last_chunk = TRUE;
    }
    if ($last_chunk) {
      $file_info['split_last_part'] = TRUE;
    }

    // Get the number of selectors.
    $selector_count = advagg_count_css_selectors($value);
    $overall_counter += $selector_count;

    // Save file.
    $subfile = advagg_create_subfile($value, $overall_counter, $file_info);
    if (empty($subfile)) {

      // Something broke; do not create a subfile.
      $variables = array(
        '@info' => var_export($file_info, TRUE),
      );
      watchdog('advagg', 'Spliting up a CSS file failed. File info: <code>@info</code>', $variables);
      return array();
    }
    $parts[] = $subfile;
  }
  return $parts;
}