function WordLevelDiff::_split

File

core/lib/Drupal/Component/Diff/WordLevelDiff.php, line 23

Class

WordLevelDiff

@todo document @private @subpackage DifferenceEngine

Namespace

Code

protected function _split($lines) {
  $words = [];
  $stripped = [];
  $first = TRUE;
  foreach ($lines as $line) {
    // If the line is too long, just pretend the entire line is one big word
    // This prevents resource exhaustion problems
    if ($first) {
      $first = FALSE;
    }
    else {
      $words[] = "\n";
      $stripped[] = "\n";
    }
    if (mb_strlen($line) > $this::MAX_LINE_LENGTH) {
      $words[] = $line;
      $stripped[] = $line;
    }
    else {
      if (preg_match_all('/ ( [^\\S\\n]+ | [0-9_A-Za-z\\x80-\\xff]+ | . ) (?: (?!< \\n) [^\\S\\n])? /xs', $line, $m)) {
        $words = array_merge($words, $m[0]);
        $stripped = array_merge($stripped, $m[1]);
      }
    }
  }
  return [
    $words,
    $stripped,
  ];
}