question: private static String removeDotSegments ( StringBuilder uri , int offset , int limit ) { if ( offset >= limit ) { return uri . toString ( ) ; } if ( uri . charAt ( offset ) == '/' ) { offset ++ ; } int segmentStart = offset ; int i = offset ; while ( i <= limit ) { int nextSegmentStart = - 1 ; if ( i == limit ) { nextSegmentStart = i ; } else if ( uri . charAt ( i ) == '/' ) { nextSegmentStart = i + 1 ; } else { i ++ ; continue ; } if ( i == segmentStart + 1 && uri . charAt ( segmentStart ) == '.' ) { uri . delete ( segmentStart , nextSegmentStart ) ; limit -= nextSegmentStart - segmentStart ; i = segmentStart ; } else if ( i == segmentStart + 2 && uri . charAt ( segmentStart ) == '.' && uri . charAt ( segmentStart + 1 ) == '.' ) { int prevSegmentStart = uri . lastIndexOf ( "/" , segmentStart - 2 ) + 1 ; int removeFrom = prevSegmentStart > offset ? prevSegmentStart : offset ; uri . delete ( removeFrom , nextSegmentStart ) ; limit -= nextSegmentStart - removeFrom ; segmentStart = prevSegmentStart ; i = prevSegmentStart ; } else { i ++ ; segmentStart = i ; } } return uri . toString ( ) ; }
target:  Removes dot segments from the path of a URI.