// ReadLineBytes read till '\n' is found or encounter error. The returned line
// does not include ending '\r\n' or '\n'. Returns err != nil if and only if
// len(line) == 0. Note the returned byte should not be used for append and
// maybe overwritten by next I/O operation. Copied code of readLineSlice from
// $GOROOT/src/pkg/net/textproto/reader.go
func ReadLineSlice(r *bufio.Reader) (line []byte, err error) {
for {
l, more, err := r.ReadLine()
if err != nil {
return nil, err
}
// Avoid the copy if the first call produced a full line.
if line == nil && !more {
return l, nil
}
line = append(line, l...)
if !more {
break
}
}
return line, nil
}
