github.com/grafana/pyroscope@v1.18.0/pkg/og/util/varint/varint.go (about)

     1  package varint
     2  
     3  import (
     4  	"encoding/binary"
     5  	"io"
     6  )
     7  
     8  type Writer []byte
     9  
    10  func NewWriter() Writer {
    11  	return make([]byte, binary.MaxVarintLen64)
    12  }
    13  
    14  func (buf Writer) Write(w io.Writer, val uint64) (int, error) {
    15  	n := binary.PutUvarint(buf, val)
    16  	return w.Write(buf[:n])
    17  }
    18  
    19  func Write(w io.Writer, val uint64) (int, error) {
    20  	buf := make([]byte, binary.MaxVarintLen64)
    21  	n := binary.PutUvarint(buf, val)
    22  	return w.Write(buf[:n])
    23  }
    24  
    25  func Read(r io.ByteReader) (uint64, error) {
    26  	return binary.ReadUvarint(r)
    27  }