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55 lines
1.7 KiB
55 lines
1.7 KiB
// Copyright 2012-2017 Charles Banning. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file
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package mxj
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import (
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"encoding/json"
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"errors"
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"reflect"
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// "github.com/fatih/structs"
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)
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// Create a new Map value from a structure. Error returned if argument is not a structure.
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// Only public structure fields are decoded in the Map value. See github.com/fatih/structs#Map
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// for handling of "structs" tags.
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// DEPRECATED - import github.com/fatih/structs and cast result of structs.Map to mxj.Map.
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// import "github.com/fatih/structs"
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// ...
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// sm, err := structs.Map(<some struct>)
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// if err != nil {
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// // handle error
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// }
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// m := mxj.Map(sm)
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// Alernatively uncomment the old source and import in struct.go.
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func NewMapStruct(structVal interface{}) (Map, error) {
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return nil, errors.New("deprecated - see package documentation")
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/*
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if !structs.IsStruct(structVal) {
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return nil, errors.New("NewMapStruct() error: argument is not type Struct")
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}
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return structs.Map(structVal), nil
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*/
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}
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// Marshal a map[string]interface{} into a structure referenced by 'structPtr'. Error returned
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// if argument is not a pointer or if json.Unmarshal returns an error.
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// json.Unmarshal structure encoding rules are followed to encode public structure fields.
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func (mv Map) Struct(structPtr interface{}) error {
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// should check that we're getting a pointer.
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if reflect.ValueOf(structPtr).Kind() != reflect.Ptr {
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return errors.New("mv.Struct() error: argument is not type Ptr")
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}
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m := map[string]interface{}(mv)
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j, err := json.Marshal(m)
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if err != nil {
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return err
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}
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return json.Unmarshal(j, structPtr)
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}
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