func PackMap(writer io.Writer, value *reflect.MapValue) (n int, err os.Error) {
keys := value.Keys()
if value.Len() < 16 {
n, err := writer.Write([]byte{0x80 | byte(len(keys))})
if err != nil {
return n, err
}
for _, k := range keys {
_n, err := PackValue(writer, k)
if err != nil {
return n, err
}
n += _n
_n, err = PackValue(writer, value.Elem(k))
if err != nil {
return n, err
}
n += _n
}
} else if value.Len() < 65536 {
n, err := writer.Write([]byte{0xde, byte(len(keys) >> 8), byte(len(keys))})
if err != nil {
return n, err
}
for _, k := range keys {
_n, err := PackValue(writer, k)
if err != nil {
return n, err
}
n += _n
_n, err = PackValue(writer, value.Elem(k))
if err != nil {
return n, err
}
n += _n
}
} else {
n, err := writer.Write([]byte{0xdf, byte(len(keys) >> 24), byte(len(keys) >> 16), byte(len(keys) >> 8), byte(len(keys))})
if err != nil {
return n, err
}
for _, k := range keys {
_n, err := PackValue(writer, k)
if err != nil {
return n, err
}
n += _n
_n, err = PackValue(writer, value.Elem(k))
if err != nil {
return n, err
}
n += _n
}
}
return n, nil
}
