byteio - stickylittleendianreader_varint.go

     1  package byteio
     2  
     3  // ReadUintX reads an unsigned integer that was encoded using a variable number
     4  // of bytes.
     5  func (e *StickyLittleEndianReader) ReadUintX() uint64 {
     6  	var (
     7  		n   int
     8  		val uint64
     9  	)
    10  
    11  	for n < 9 {
    12  		c, _ := e.ReadByte()
    13  		val += uint64(c&0xff) << uint(n*7)
    14  		n++
    15  
    16  		if c&0x80 == 0 {
    17  			break
    18  		}
    19  	}
    20  
    21  	return val
    22  }
    23  
    24  // ReadIntX reads an integer that was encoded using a variable number of bytes.
    25  func (e *StickyLittleEndianReader) ReadIntX() int64 {
    26  	return unzigzag(e.ReadUintX())
    27  }
    28