You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
168 lines
4.0 KiB
168 lines
4.0 KiB
package binary
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"reflect"
|
|
"time"
|
|
)
|
|
|
|
type Encoder func(o interface{}, w io.Writer, n *int64, err *error)
|
|
type Decoder func(r Unreader, n *int64, err *error) interface{}
|
|
type Comparator func(o1 interface{}, o2 interface{}) int
|
|
|
|
type Codec struct {
|
|
Encode Encoder
|
|
Decode Decoder
|
|
Compare Comparator
|
|
}
|
|
|
|
const (
|
|
typeByte = byte(0x01)
|
|
typeInt8 = byte(0x02)
|
|
// typeUint8 = byte(0x03)
|
|
typeInt16 = byte(0x04)
|
|
typeUint16 = byte(0x05)
|
|
typeInt32 = byte(0x06)
|
|
typeUint32 = byte(0x07)
|
|
typeInt64 = byte(0x08)
|
|
typeUint64 = byte(0x09)
|
|
typeVarint = byte(0x0A)
|
|
typeUvarint = byte(0x0B)
|
|
typeString = byte(0x10)
|
|
typeByteSlice = byte(0x11)
|
|
typeTime = byte(0x20)
|
|
)
|
|
|
|
func BasicCodecEncoder(o interface{}, w io.Writer, n *int64, err *error) {
|
|
switch o.(type) {
|
|
case nil:
|
|
panic("nil type unsupported")
|
|
case byte:
|
|
WriteByte(typeByte, w, n, err)
|
|
WriteByte(o.(byte), w, n, err)
|
|
case int8:
|
|
WriteByte(typeInt8, w, n, err)
|
|
WriteInt8(o.(int8), w, n, err)
|
|
//case uint8:
|
|
// WriteByte( typeUint8, w, n, err)
|
|
// WriteUint8( o.(uint8), w, n, err)
|
|
case int16:
|
|
WriteByte(typeInt16, w, n, err)
|
|
WriteInt16(o.(int16), w, n, err)
|
|
case uint16:
|
|
WriteByte(typeUint16, w, n, err)
|
|
WriteUint16(o.(uint16), w, n, err)
|
|
case int32:
|
|
WriteByte(typeInt32, w, n, err)
|
|
WriteInt32(o.(int32), w, n, err)
|
|
case uint32:
|
|
WriteByte(typeUint32, w, n, err)
|
|
WriteUint32(o.(uint32), w, n, err)
|
|
case int64:
|
|
WriteByte(typeInt64, w, n, err)
|
|
WriteInt64(o.(int64), w, n, err)
|
|
case uint64:
|
|
WriteByte(typeUint64, w, n, err)
|
|
WriteUint64(o.(uint64), w, n, err)
|
|
case int:
|
|
WriteByte(typeVarint, w, n, err)
|
|
WriteVarint(o.(int), w, n, err)
|
|
case uint:
|
|
WriteByte(typeUvarint, w, n, err)
|
|
WriteUvarint(o.(uint), w, n, err)
|
|
case string:
|
|
WriteByte(typeString, w, n, err)
|
|
WriteString(o.(string), w, n, err)
|
|
case []byte:
|
|
WriteByte(typeByteSlice, w, n, err)
|
|
WriteByteSlice(o.([]byte), w, n, err)
|
|
case time.Time:
|
|
WriteByte(typeTime, w, n, err)
|
|
WriteTime(o.(time.Time), w, n, err)
|
|
default:
|
|
panic(fmt.Sprintf("Unsupported type: %v", reflect.TypeOf(o)))
|
|
}
|
|
}
|
|
|
|
func BasicCodecDecoder(r Unreader, n *int64, err *error) (o interface{}) {
|
|
type_ := ReadByte(r, n, err)
|
|
switch type_ {
|
|
case typeByte:
|
|
o = ReadByte(r, n, err)
|
|
case typeInt8:
|
|
o = ReadInt8(r, n, err)
|
|
//case typeUint8:
|
|
// o = ReadUint8(r, n, err)
|
|
case typeInt16:
|
|
o = ReadInt16(r, n, err)
|
|
case typeUint16:
|
|
o = ReadUint16(r, n, err)
|
|
case typeInt32:
|
|
o = ReadInt32(r, n, err)
|
|
case typeUint32:
|
|
o = ReadUint32(r, n, err)
|
|
case typeInt64:
|
|
o = ReadInt64(r, n, err)
|
|
case typeUint64:
|
|
o = ReadUint64(r, n, err)
|
|
case typeVarint:
|
|
o = ReadVarint(r, n, err)
|
|
case typeUvarint:
|
|
o = ReadUvarint(r, n, err)
|
|
case typeString:
|
|
o = ReadString(r, n, err)
|
|
case typeByteSlice:
|
|
o = ReadByteSlice(r, n, err)
|
|
case typeTime:
|
|
o = ReadTime(r, n, err)
|
|
default:
|
|
if *err != nil {
|
|
panic(*err)
|
|
} else {
|
|
panic(fmt.Sprintf("Unsupported type byte: %X", type_))
|
|
}
|
|
}
|
|
return o
|
|
}
|
|
|
|
func BasicCodecComparator(o1 interface{}, o2 interface{}) int {
|
|
switch o1.(type) {
|
|
case byte:
|
|
return int(o1.(byte) - o2.(byte))
|
|
case int8:
|
|
return int(o1.(int8) - o2.(int8))
|
|
//case uint8:
|
|
case int16:
|
|
return int(o1.(int16) - o2.(int16))
|
|
case uint16:
|
|
return int(o1.(uint16) - o2.(uint16))
|
|
case int32:
|
|
return int(o1.(int32) - o2.(int32))
|
|
case uint32:
|
|
return int(o1.(uint32) - o2.(uint32))
|
|
case int64:
|
|
return int(o1.(int64) - o2.(int64))
|
|
case uint64:
|
|
return int(o1.(uint64) - o2.(uint64))
|
|
case int:
|
|
return o1.(int) - o2.(int)
|
|
case uint:
|
|
return int(o1.(uint)) - int(o2.(uint))
|
|
case string:
|
|
return bytes.Compare([]byte(o1.(string)), []byte(o2.(string)))
|
|
case []byte:
|
|
return bytes.Compare(o1.([]byte), o2.([]byte))
|
|
case time.Time:
|
|
return int(o1.(time.Time).UnixNano() - o2.(time.Time).UnixNano())
|
|
default:
|
|
panic(fmt.Sprintf("Unsupported type: %v", reflect.TypeOf(o1)))
|
|
}
|
|
}
|
|
|
|
var BasicCodec = Codec{
|
|
Encode: BasicCodecEncoder,
|
|
Decode: BasicCodecDecoder,
|
|
Compare: BasicCodecComparator,
|
|
}
|