original_string: private function _load21DelFile()
      {
          $delFile = $this->_directory->getFileObject($this->_name . '_' . base_convert($this->_delGen, 10, 36) . '.del');
  
          $format = $delFile->readInt();
  
          if ($format == (int)0xFFFFFFFF) {
              if (extension_loaded('bitset')) {
                  $deletions = bitset_empty();
              } else {
                  $deletions = array();
              }
  
              $byteCount = $delFile->readInt();
              $bitCount  = $delFile->readInt();
  
              $delFileSize = $this->_directory->fileLength($this->_name . '_' . base_convert($this->_delGen, 10, 36) . '.del');
              $byteNum = 0;
  
              do {
                  $dgap = $delFile->readVInt();
                  $nonZeroByte = $delFile->readByte();
  
                  $byteNum += $dgap;
  
  
                  if (extension_loaded('bitset')) {
                      for ($bit = 0; $bit < 8; $bit++) {
                          if ($nonZeroByte & (1<<$bit)) {
                              bitset_incl($deletions, $byteNum*8 + $bit);
                          }
                      }
                      return $deletions;
                  } else {
                      for ($bit = 0; $bit < 8; $bit++) {
                          if ($nonZeroByte & (1<<$bit)) {
                              $deletions[$byteNum*8 + $bit] = 1;
                          }
                      }
                      return (count($deletions) > 0) ? $deletions : null;
                  }
  
              } while ($delFile->tell() < $delFileSize);
          } else {
              // $format is actually byte count
              $byteCount = ceil($format/8);
              $bitCount  = $delFile->readInt();
  
              if ($bitCount == 0) {
                  $delBytes = '';
              } else {
                  $delBytes = $delFile->readBytes($byteCount);
              }
  
              if (extension_loaded('bitset')) {
                  return $delBytes;
              } else {
                  $deletions = array();
                  for ($count = 0; $count < $byteCount; $count++) {
                      $byte = ord($delBytes[$count]);
                      for ($bit = 0; $bit < 8; $bit++) {
                          if ($byte & (1<<$bit)) {
                              $deletions[$count*8 + $bit] = 1;
                          }
                      }
                  }
  
                  return (count($deletions) > 0) ? $deletions : null;
              }
          }
      }
code: private function _load21DelFile()
      {
          $delFile = $this->_directory->getFileObject($this->_name . '_' . base_convert($this->_delGen, 10, 36) . '.del');
  
          $format = $delFile->readInt();
  
          if ($format == (int)0xFFFFFFFF) {
              if (extension_loaded('bitset')) {
                  $deletions = bitset_empty();
              } else {
                  $deletions = array();
              }
  
              $byteCount = $delFile->readInt();
              $bitCount  = $delFile->readInt();
  
              $delFileSize = $this->_directory->fileLength($this->_name . '_' . base_convert($this->_delGen, 10, 36) . '.del');
              $byteNum = 0;
  
              do {
                  $dgap = $delFile->readVInt();
                  $nonZeroByte = $delFile->readByte();
  
                  $byteNum += $dgap;
  
  
                  if (extension_loaded('bitset')) {
                      for ($bit = 0; $bit < 8; $bit++) {
                          if ($nonZeroByte & (1<<$bit)) {
                              bitset_incl($deletions, $byteNum*8 + $bit);
                          }
                      }
                      return $deletions;
                  } else {
                      for ($bit = 0; $bit < 8; $bit++) {
                          if ($nonZeroByte & (1<<$bit)) {
                              $deletions[$byteNum*8 + $bit] = 1;
                          }
                      }
                      return (count($deletions) > 0) ? $deletions : null;
                  }
  
              } while ($delFile->tell() < $delFileSize);
          } else {
              // $format is actually byte count
              $byteCount = ceil($format/8);
              $bitCount  = $delFile->readInt();
  
              if ($bitCount == 0) {
                  $delBytes = '';
              } else {
                  $delBytes = $delFile->readBytes($byteCount);
              }
  
              if (extension_loaded('bitset')) {
                  return $delBytes;
              } else {
                  $deletions = array();
                  for ($count = 0; $count < $byteCount; $count++) {
                      $byte = ord($delBytes[$count]);
                      for ($bit = 0; $bit < 8; $bit++) {
                          if ($byte & (1<<$bit)) {
                              $deletions[$count*8 + $bit] = 1;
                          }
                      }
                  }
  
                  return (count($deletions) > 0) ? $deletions : null;
              }
          }
      }
code_tokens: private function _load21DelFile ( ) { $ delFile = $ this -> _directory -> getFileObject ( $ this -> _name . '_' . base_convert ( $ this -> _delGen , 10 , 36 ) . '.del' ) ; $ format = $ delFile -> readInt ( ) ; if ( $ format == ( int ) 0xFFFFFFFF ) { if ( extension_loaded ( 'bitset' ) ) { $ deletions = bitset_empty ( ) ; } else { $ deletions = array ( ) ; } $ byteCount = $ delFile -> readInt ( ) ; $ bitCount = $ delFile -> readInt ( ) ; $ delFileSize = $ this -> _directory -> fileLength ( $ this -> _name . '_' . base_convert ( $ this -> _delGen , 10 , 36 ) . '.del' ) ; $ byteNum = 0 ; do { $ dgap = $ delFile -> readVInt ( ) ; $ nonZeroByte = $ delFile -> readByte ( ) ; $ byteNum += $ dgap ; if ( extension_loaded ( 'bitset' ) ) { for ( $ bit = 0 ; $ bit < 8 ; $ bit ++ ) { if ( $ nonZeroByte & ( 1 << $ bit ) ) { bitset_incl ( $ deletions , $ byteNum * 8 + $ bit ) ; } } return $ deletions ; } else { for ( $ bit = 0 ; $ bit < 8 ; $ bit ++ ) { if ( $ nonZeroByte & ( 1 << $ bit ) ) { $ deletions [ $ byteNum * 8 + $ bit ] = 1 ; } } return ( count ( $ deletions ) > 0 ) ? $ deletions : null ; } } while ( $ delFile -> tell ( ) < $ delFileSize ) ; } else { // $format is actually byte count $ byteCount = ceil ( $ format / 8 ) ; $ bitCount = $ delFile -> readInt ( ) ; if ( $ bitCount == 0 ) { $ delBytes = '' ; } else { $ delBytes = $ delFile -> readBytes ( $ byteCount ) ; } if ( extension_loaded ( 'bitset' ) ) { return $ delBytes ; } else { $ deletions = array ( ) ; for ( $ count = 0 ; $ count < $ byteCount ; $ count ++ ) { $ byte = ord ( $ delBytes [ $ count ] ) ; for ( $ bit = 0 ; $ bit < 8 ; $ bit ++ ) { if ( $ byte & ( 1 << $ bit ) ) { $ deletions [ $ count * 8 + $ bit ] = 1 ; } } } return ( count ( $ deletions ) > 0 ) ? $ deletions : null ; } } }
docstring: Load 2.1+ format detetions file
  
  Returns bitset or an array depending on bitset extension availability
  
  @return mixed
docstring_tokens: Load 2 . 1 + format detetions file