// Copyright 2018 The Hugo Authors. All rights reserved.
//
// 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 metadecoders

import "encoding/json"

// HandleJSONData unmarshals JSON-encoded datum and returns a Go interface
// representing the encoded data structure.
func HandleJSONData(datum []byte) (interface{}, error) {
	if datum == nil {
		// Package json returns on error on nil input.
		// Return an empty map to be consistent with our other supported
		// formats.
		return make(map[string]interface{}), nil
	}

	var f interface{}
	err := json.Unmarshal(datum, &f)
	return f, err
}