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This commit adds support for a configuration directory (default `config`). The different pieces in this puzzle are:
* A new `--environment` (or `-e`) flag. This can also be set with the `HUGO_ENVIRONMENT` OS environment variable. The value for `environment` defaults to `production` when running `hugo` and `development` when running `hugo server`. You can set it to any value you want (e.g. `hugo server -e "Sensible Environment"`), but as it is used to load configuration from the file system, the letter case may be important. You can get this value in your templates with `{{ hugo.Environment }}`.
* A new `--configDir` flag (defaults to `config` below your project). This can also be set with `HUGO_CONFIGDIR` OS environment variable.
If the `configDir` exists, the configuration files will be read and merged on top of each other from left to right; the right-most value will win on duplicates.
Given the example tree below:
If `environment` is `production`, the left-most `config.toml` would be the one directly below the project (this can now be omitted if you want), and then `_default/config.toml` and finally `production/config.toml`. And since these will be merged, you can just provide the environment specific configuration setting in you production config, e.g. `enableGitInfo = true`. The order within the directories will be lexical (`config.toml` and then `params.toml`).
```bash
config
├── _default
│ ├── config.toml
│ ├── languages.toml
│ ├── menus
│ │ ├── menus.en.toml
│ │ └── menus.zh.toml
│ └── params.toml
├── development
│ └── params.toml
└── production
├── config.toml
└── params.toml
```
Some configuration maps support the language code in the filename (e.g. `menus.en.toml`): `menus` (`menu` also works) and `params`.
Also note that the only folders with "a meaning" in the above listing is the top level directories below `config`. The `menus` sub folder is just added for better organization.
We use `TOML` in the example above, but Hugo also supports `JSON` and `YAML` as configuration formats. These can be mixed.
Fixes #5422
106 lines
2.5 KiB
Go
106 lines
2.5 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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"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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// 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.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.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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v.AutomaticEnv()
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v.SetEnvPrefix("hugo")
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return v
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}
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