| // +build ignore,OMIT |
| |
| package main |
| |
| import ( |
| "encoding/binary" |
| "image/color" |
| "io" |
| "log" |
| "os" |
| ) |
| |
| // GOPHER OMIT |
| type Gopher struct { |
| Name string |
| Age int32 |
| FurColor color.Color |
| } |
| |
| type binWriter struct { |
| w io.Writer |
| err error |
| } |
| |
| // WRITE OMIT |
| // Write writes a value into its writer using little endian. |
| func (w *binWriter) Write(v interface{}) { |
| if w.err != nil { |
| return |
| } |
| switch v.(type) { |
| case string: |
| s := v.(string) |
| w.Write(int32(len(s))) |
| w.Write([]byte(s)) |
| default: |
| w.err = binary.Write(w.w, binary.LittleEndian, v) |
| } |
| } |
| |
| // DUMP OMIT |
| func (g *Gopher) DumpBinary(w io.Writer) error { |
| bw := &binWriter{w: w} |
| bw.Write(g.Name) |
| bw.Write(g.Age) |
| bw.Write(g.FurColor) |
| return bw.err |
| } |
| |
| // MAIN OMIT |
| func main() { |
| w := os.Stdout |
| g := &Gopher{ |
| Name: "Gophertiti", |
| Age: 3383, |
| FurColor: color.RGBA{B: 255}, |
| } |
| |
| if err := g.DumpBinary(w); err != nil { |
| log.Fatal("DumpBinary: %v", err) |
| } |
| } |
