forked from mirror/ledisdb
129 lines
2.2 KiB
Go
129 lines
2.2 KiB
Go
package rdb
|
|
|
|
// Copyright 2014 Wandoujia Inc. All Rights Reserved.
|
|
// Licensed under the MIT (MIT-LICENSE.txt) license.
|
|
|
|
import "fmt"
|
|
|
|
import (
|
|
"github.com/cupcake/rdb"
|
|
"github.com/cupcake/rdb/nopdecoder"
|
|
)
|
|
|
|
func DecodeDump(p []byte) (interface{}, error) {
|
|
d := &decoder{}
|
|
if err := rdb.DecodeDump(p, 0, nil, 0, d); err != nil {
|
|
return nil, err
|
|
}
|
|
return d.obj, d.err
|
|
}
|
|
|
|
type decoder struct {
|
|
nopdecoder.NopDecoder
|
|
obj interface{}
|
|
err error
|
|
}
|
|
|
|
func (d *decoder) initObject(obj interface{}) {
|
|
if d.err != nil {
|
|
return
|
|
}
|
|
if d.obj != nil {
|
|
d.err = fmt.Errorf("invalid object, init again")
|
|
} else {
|
|
d.obj = obj
|
|
}
|
|
}
|
|
|
|
func (d *decoder) Set(key, value []byte, expiry int64) {
|
|
d.initObject(String(value))
|
|
}
|
|
|
|
func (d *decoder) StartHash(key []byte, length, expiry int64) {
|
|
d.initObject(Hash(nil))
|
|
}
|
|
|
|
func (d *decoder) Hset(key, field, value []byte) {
|
|
if d.err != nil {
|
|
return
|
|
}
|
|
switch h := d.obj.(type) {
|
|
default:
|
|
d.err = fmt.Errorf("invalid object, not a hashmap")
|
|
case Hash:
|
|
v := struct {
|
|
Field, Value []byte
|
|
}{
|
|
field,
|
|
value,
|
|
}
|
|
d.obj = append(h, v)
|
|
}
|
|
}
|
|
|
|
func (d *decoder) StartSet(key []byte, cardinality, expiry int64) {
|
|
d.initObject(Set(nil))
|
|
}
|
|
|
|
func (d *decoder) Sadd(key, member []byte) {
|
|
if d.err != nil {
|
|
return
|
|
}
|
|
switch s := d.obj.(type) {
|
|
default:
|
|
d.err = fmt.Errorf("invalid object, not a set")
|
|
case Set:
|
|
d.obj = append(s, member)
|
|
}
|
|
}
|
|
|
|
func (d *decoder) StartList(key []byte, length, expiry int64) {
|
|
d.initObject(List(nil))
|
|
}
|
|
|
|
func (d *decoder) Rpush(key, value []byte) {
|
|
if d.err != nil {
|
|
return
|
|
}
|
|
switch l := d.obj.(type) {
|
|
default:
|
|
d.err = fmt.Errorf("invalid object, not a list")
|
|
case List:
|
|
d.obj = append(l, value)
|
|
}
|
|
}
|
|
|
|
func (d *decoder) StartZSet(key []byte, cardinality, expiry int64) {
|
|
d.initObject(ZSet(nil))
|
|
}
|
|
|
|
func (d *decoder) Zadd(key []byte, score float64, member []byte) {
|
|
if d.err != nil {
|
|
return
|
|
}
|
|
switch z := d.obj.(type) {
|
|
default:
|
|
d.err = fmt.Errorf("invalid object, not a zset")
|
|
case ZSet:
|
|
v := struct {
|
|
Member []byte
|
|
Score float64
|
|
}{
|
|
member,
|
|
score,
|
|
}
|
|
d.obj = append(z, v)
|
|
}
|
|
}
|
|
|
|
type String []byte
|
|
type List [][]byte
|
|
type Hash []struct {
|
|
Field, Value []byte
|
|
}
|
|
type Set [][]byte
|
|
type ZSet []struct {
|
|
Member []byte
|
|
Score float64
|
|
}
|