File size: 1,068 Bytes
305487b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | package cachex
import (
"encoding/json"
"fmt"
"strconv"
"strings"
)
type ValueCodec[V any] interface {
Encode(v V) (string, error)
Decode(s string) (V, error)
}
type IntCodec struct{}
func (c IntCodec) Encode(v int) (string, error) {
return strconv.Itoa(v), nil
}
func (c IntCodec) Decode(s string) (int, error) {
s = strings.TrimSpace(s)
if s == "" {
return 0, fmt.Errorf("empty int value")
}
return strconv.Atoi(s)
}
type StringCodec struct{}
func (c StringCodec) Encode(v string) (string, error) { return v, nil }
func (c StringCodec) Decode(s string) (string, error) { return s, nil }
type JSONCodec[V any] struct{}
func (c JSONCodec[V]) Encode(v V) (string, error) {
b, err := json.Marshal(v)
if err != nil {
return "", err
}
return string(b), nil
}
func (c JSONCodec[V]) Decode(s string) (V, error) {
var v V
if strings.TrimSpace(s) == "" {
return v, fmt.Errorf("empty json value")
}
if err := json.Unmarshal([]byte(s), &v); err != nil {
return v, err
}
return v, nil
}
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