github.com/coyove/sdss@v0.0.0-20231129015646-c2ec58cca6a2/contrib/roaring/serialization.go (about)

     1  package roaring
     2  
     3  import (
     4  	"encoding/binary"
     5  	"io"
     6  )
     7  
     8  // writeTo for runContainer16 follows this
     9  // spec: https://github.com/RoaringBitmap/RoaringFormatSpec
    10  //
    11  func (b *runContainer16) writeTo(stream io.Writer) (int, error) {
    12  	buf := make([]byte, 2+4*len(b.iv))
    13  	binary.LittleEndian.PutUint16(buf[0:], uint16(len(b.iv)))
    14  	for i, v := range b.iv {
    15  		binary.LittleEndian.PutUint16(buf[2+i*4:], v.start)
    16  		binary.LittleEndian.PutUint16(buf[2+2+i*4:], v.length)
    17  	}
    18  	return stream.Write(buf)
    19  }