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Deal with types related to error_reply and status_reply. Moved lua code to a separate file.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| package miniredis | ||
|
|
||
| import ( | ||
| "strconv" | ||
|
|
||
| redigo "github.com/garyburd/redigo/redis" | ||
| lua "github.com/yuin/gopher-lua" | ||
|
|
||
| "github.com/alicebob/miniredis/server" | ||
| ) | ||
|
|
||
| func mkLuaFuncs(conn redigo.Conn) map[string]lua.LGFunction { | ||
| funcs := map[string]lua.LGFunction{ | ||
| "call": func(l *lua.LState) int { | ||
| top := l.GetTop() | ||
|
|
||
| cmd := lua.LVAsString(l.Get(1)) | ||
| args := make([]interface{}, top-1) | ||
| for i := 2; i <= top; i++ { | ||
| arg := l.Get(i) | ||
|
|
||
| dataType := arg.Type() | ||
| switch dataType { | ||
| case lua.LTBool: | ||
| args[i-2] = lua.LVAsBool(arg) | ||
| case lua.LTNumber: | ||
| value, _ := strconv.ParseFloat(lua.LVAsString(arg), 64) | ||
| args[i-2] = value | ||
| case lua.LTString: | ||
| args[i-2] = lua.LVAsString(arg) | ||
| case lua.LTNil: | ||
| case lua.LTFunction: | ||
| case lua.LTUserData: | ||
| case lua.LTThread: | ||
| case lua.LTTable: | ||
| case lua.LTChannel: | ||
| default: | ||
| args[i-2] = nil | ||
| } | ||
| } | ||
| res, err := conn.Do(cmd, args...) | ||
| if err != nil { | ||
| l.Push(lua.LNil) | ||
| return 1 | ||
| } | ||
|
|
||
| if res == nil { | ||
| l.Push(lua.LNil) | ||
| } else { | ||
| switch r := res.(type) { | ||
| case int64: | ||
| l.Push(lua.LNumber(r)) | ||
| case []uint8: | ||
| l.Push(lua.LString(string(r))) | ||
| case []interface{}: | ||
| l.Push(redisToLua(l, r)) | ||
| case string: | ||
| l.Push(lua.LString(r)) | ||
| default: | ||
| // TODO: oops? | ||
| l.Push(lua.LString(res.(string))) | ||
| } | ||
| } | ||
|
|
||
| return 1 // Notify that we pushed one value to the stack | ||
| }, | ||
| "error_reply": func(l *lua.LState) int { | ||
| msg := l.CheckAny(1) | ||
| res := &lua.LTable{} | ||
| res.RawSetString("err", msg) | ||
| l.Push(res) | ||
| return 1 | ||
| }, | ||
| "status_reply": func(l *lua.LState) int { | ||
| msg := l.CheckAny(1) | ||
| res := &lua.LTable{} | ||
| res.RawSetString("ok", msg) | ||
| l.Push(res) | ||
| return 1 | ||
| }, | ||
| } | ||
| funcs["pcall"] = funcs["call"] | ||
| return funcs | ||
| } | ||
|
|
||
| func luaToRedis(l *lua.LState, c *server.Peer, value lua.LValue) { | ||
| if value == nil { | ||
| c.WriteNull() | ||
| return | ||
| } | ||
|
|
||
| switch value.Type() { | ||
| case lua.LTNil: | ||
| c.WriteNull() | ||
| case lua.LTBool: | ||
| if lua.LVAsBool(value) { | ||
| c.WriteInt(1) | ||
| } else { | ||
| c.WriteInt(0) | ||
| } | ||
| case lua.LTNumber: | ||
| c.WriteInt(int(lua.LVAsNumber(value))) | ||
| case lua.LTString: | ||
| c.WriteBulk(lua.LVAsString(value)) | ||
| case lua.LTTable: | ||
| t := value.(*lua.LTable) | ||
| // special case for table with only an 'err' field | ||
| var keys []string | ||
| t.ForEach(func(k, _ lua.LValue) { | ||
| keys = append(keys, k.String()) | ||
| }) | ||
| if len(keys) == 1 && keys[0] == "err" { | ||
| c.WriteError(t.RawGetString("err").String()) | ||
| return | ||
| } | ||
| if len(keys) == 1 && keys[0] == "ok" { | ||
| c.WriteInline(t.RawGetString("ok").String()) | ||
| return | ||
| } | ||
|
|
||
| result := []lua.LValue{} | ||
| for j := 1; true; j++ { | ||
| val := l.GetTable(value, lua.LNumber(j)) | ||
| if val == nil { | ||
| result = append(result, val) | ||
| continue | ||
| } | ||
|
|
||
| if val.Type() == lua.LTNil { | ||
| break | ||
| } | ||
|
|
||
| result = append(result, val) | ||
| } | ||
|
|
||
| c.WriteLen(len(result)) | ||
| for _, r := range result { | ||
| luaToRedis(l, c, r) | ||
| } | ||
| default: | ||
| c.WriteInline(lua.LVAsString(value)) | ||
| } | ||
| } | ||
|
|
||
| func redisToLua(l *lua.LState, res []interface{}) *lua.LTable { | ||
| rettb := l.NewTable() | ||
| for _, e := range res { | ||
| var v lua.LValue | ||
| if e == nil { | ||
| v = lua.LValue(nil) | ||
| } else { | ||
| switch et := e.(type) { | ||
| case int64: | ||
| v = lua.LNumber(et) | ||
| case []uint8: | ||
| v = lua.LString(string(et)) | ||
| case []interface{}: | ||
| v = redisToLua(l, et) | ||
| case string: | ||
| v = lua.LString(et) | ||
| default: | ||
| // TODO: oops? | ||
| v = lua.LString(e.(string)) | ||
| } | ||
| } | ||
| l.RawSet(rettb, lua.LNumber(rettb.Len()+1), v) | ||
| } | ||
| return rettb | ||
| } |