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cmdargs.go
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cmdargs.go
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// Copyright 2014,2015,2016,2017,2018,2019,2020,2021 SeukWon Kang (kasworld@gmail.com)
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package scriptparse
import (
"fmt"
)
func (ca CmdArgs) String() string {
return fmt.Sprintf("CmdArgs[%v %v]", ca.Cmd, ca.Name2Value)
}
type CmdArgs struct {
Type2ConvFn map[string]func(valStr string, dstValue interface{}) error
Cmd string
Name2Value map[string]string
NameList []string
Name2Type map[string]string
}
func (ca *CmdArgs) GetArgs(varList ...interface{}) error {
if len(ca.Name2Value) != len(ca.NameList) {
return fmt.Errorf("invalid arg count %v, %v", ca.Name2Value, ca.NameList)
}
for argPos, argName := range ca.NameList {
err := ca.SetArgByName(argName, varList[argPos])
if err != nil {
return err
}
}
return nil
}
func (ca *CmdArgs) SetArgByName(argName string, v interface{}) error {
argValue, exist := ca.Name2Value[argName]
if !exist {
return fmt.Errorf("arg %v not found %v", argName, ca.Name2Value)
}
convFn, exist := ca.Type2ConvFn[ca.Name2Type[argName]]
if !exist {
return fmt.Errorf("not supported type %v %v", ca.Name2Type[argName], argValue)
}
err := convFn(argValue, v)
if err != nil {
return err
}
return nil
}