/usr/share/gocode/src/github.com/eapache/go-xerial-snappy/snappy.go is in golang-github-eapache-go-xerial-snappy-dev 0.0~git20160609.bb955e0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | package snappy
import (
"bytes"
"encoding/binary"
master "github.com/golang/snappy"
)
var xerialHeader = []byte{130, 83, 78, 65, 80, 80, 89, 0}
// Encode encodes data as snappy with no framing header.
func Encode(src []byte) []byte {
return master.Encode(nil, src)
}
// Decode decodes snappy data whether it is traditional unframed
// or includes the xerial framing format.
func Decode(src []byte) ([]byte, error) {
if !bytes.Equal(src[:8], xerialHeader) {
return master.Decode(nil, src)
}
var (
pos = uint32(16)
max = uint32(len(src))
dst = make([]byte, 0, len(src))
chunk []byte
err error
)
for pos < max {
size := binary.BigEndian.Uint32(src[pos : pos+4])
pos += 4
chunk, err = master.Decode(chunk, src[pos:pos+size])
if err != nil {
return nil, err
}
pos += size
dst = append(dst, chunk...)
}
return dst, nil
}
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