125 lines
3.1 KiB
Go
125 lines
3.1 KiB
Go
// Copyright 2018 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 config
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import (
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"path/filepath"
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"strings"
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"github.com/gohugoio/hugo/common/maps"
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"github.com/gohugoio/hugo/parser/metadecoders"
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"github.com/spf13/afero"
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"github.com/spf13/viper"
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)
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var (
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ValidConfigFileExtensions = []string{"toml", "yaml", "yml", "json"}
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validConfigFileExtensionsMap map[string]bool = make(map[string]bool)
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)
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func init() {
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for _, ext := range ValidConfigFileExtensions {
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validConfigFileExtensionsMap[ext] = true
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}
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}
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// IsValidConfigFilename returns whether filename is one of the supported
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// config formats in Hugo.
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func IsValidConfigFilename(filename string) bool {
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ext := strings.ToLower(strings.TrimPrefix(filepath.Ext(filename), "."))
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return validConfigFileExtensionsMap[ext]
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}
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// FromConfigString creates a config from the given YAML, JSON or TOML config. This is useful in tests.
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func FromConfigString(config, configType string) (Provider, error) {
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v := newViper()
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m, err := readConfig(metadecoders.FormatFromString(configType), []byte(config))
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if err != nil {
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return nil, err
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}
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v.MergeConfigMap(m)
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return v, nil
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}
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// FromFile loads the configuration from the given filename.
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func FromFile(fs afero.Fs, filename string) (Provider, error) {
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m, err := loadConfigFromFile(fs, filename)
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if err != nil {
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return nil, err
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}
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v := newViper()
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err = v.MergeConfigMap(m)
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if err != nil {
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return nil, err
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}
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return v, nil
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}
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// FromFileToMap is the same as FromFile, but it returns the config values
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// as a simple map.
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func FromFileToMap(fs afero.Fs, filename string) (map[string]interface{}, error) {
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return loadConfigFromFile(fs, filename)
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}
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func readConfig(format metadecoders.Format, data []byte) (map[string]interface{}, error) {
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m, err := metadecoders.Default.UnmarshalToMap(data, format)
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if err != nil {
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return nil, err
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}
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RenameKeys(m)
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return m, nil
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}
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func loadConfigFromFile(fs afero.Fs, filename string) (map[string]interface{}, error) {
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m, err := metadecoders.Default.UnmarshalFileToMap(fs, filename)
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if err != nil {
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return nil, err
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}
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RenameKeys(m)
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return m, nil
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}
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var keyAliases maps.KeyRenamer
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func init() {
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var err error
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keyAliases, err = maps.NewKeyRenamer(
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// Before 0.53 we used singular for "menu".
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"{menu,languages/*/menu}", "menus",
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)
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if err != nil {
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panic(err)
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}
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}
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// RenameKeys renames config keys in m recursively according to a global Hugo
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// alias definition.
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func RenameKeys(m map[string]interface{}) {
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keyAliases.Rename(m)
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}
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func newViper() *viper.Viper {
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v := viper.New()
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return v
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}
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