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