WriteSection serializes v as JSON and writes it as a named section.
(name string, v any)
| 30 | |
| 31 | // WriteSection serializes v as JSON and writes it as a named section. |
| 32 | func (e *Encoder) WriteSection(name string, v any) error { |
| 33 | data, err := json.Marshal(v) |
| 34 | if err != nil { |
| 35 | return fmt.Errorf("copyover: marshal section %q: %w", name, err) |
| 36 | } |
| 37 | |
| 38 | nameBytes := []byte(name) |
| 39 | if err := binary.Write(e.w, binary.BigEndian, uint16(len(nameBytes))); err != nil { |
| 40 | return fmt.Errorf("copyover: write name length for %q: %w", name, err) |
| 41 | } |
| 42 | if _, err := e.w.Write(nameBytes); err != nil { |
| 43 | return fmt.Errorf("copyover: write name for %q: %w", name, err) |
| 44 | } |
| 45 | if err := binary.Write(e.w, binary.BigEndian, uint32(len(data))); err != nil { |
| 46 | return fmt.Errorf("copyover: write data length for %q: %w", name, err) |
| 47 | } |
| 48 | if _, err := e.w.Write(data); err != nil { |
| 49 | return fmt.Errorf("copyover: write data for %q: %w", name, err) |
| 50 | } |
| 51 | return nil |
| 52 | } |
| 53 | |
| 54 | // Decoder reads named sections from a stream. |
| 55 | type Decoder struct { |