110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
// Copyright 2015 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package parser
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import (
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"encoding/json"
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"errors"
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"io"
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"github.com/gohugoio/hugo/parser/metadecoders"
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toml "github.com/pelletier/go-toml/v2"
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yaml "gopkg.in/yaml.v2"
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)
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const (
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yamlDelimLf = "---\n"
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tomlDelimLf = "+++\n"
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)
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func InterfaceToConfig(in interface{}, format metadecoders.Format, w io.Writer) error {
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if in == nil {
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return errors.New("input was nil")
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}
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switch format {
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case metadecoders.YAML:
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b, err := yaml.Marshal(in)
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if err != nil {
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return err
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}
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_, err = w.Write(b)
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return err
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case metadecoders.TOML:
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enc := toml.NewEncoder(w)
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enc.SetIndentTables(true)
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return enc.Encode(in)
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case metadecoders.JSON:
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b, err := json.MarshalIndent(in, "", " ")
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if err != nil {
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return err
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}
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_, err = w.Write(b)
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if err != nil {
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return err
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}
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_, err = w.Write([]byte{'\n'})
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return err
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default:
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return errors.New("unsupported Format provided")
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}
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}
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func InterfaceToFrontMatter(in interface{}, format metadecoders.Format, w io.Writer) error {
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if in == nil {
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return errors.New("input was nil")
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}
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switch format {
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case metadecoders.YAML:
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_, err := w.Write([]byte(yamlDelimLf))
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if err != nil {
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return err
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}
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err = InterfaceToConfig(in, format, w)
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if err != nil {
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return err
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}
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_, err = w.Write([]byte(yamlDelimLf))
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return err
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case metadecoders.TOML:
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_, err := w.Write([]byte(tomlDelimLf))
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if err != nil {
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return err
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}
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err = InterfaceToConfig(in, format, w)
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if err != nil {
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return err
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}
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_, err = w.Write([]byte("\n" + tomlDelimLf))
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return err
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default:
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return InterfaceToConfig(in, format, w)
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}
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}
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