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// Copyright 2016-present 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 hugolib
import (
"sync"
"sort"
"errors"
"fmt"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/helpers"
"github.com/spf13/cast"
)
// Multilingual manages the all languages used in a multilingual site.
type Multilingual struct {
Languages helpers.Languages
DefaultLang *helpers.Language
langMap map[string]*helpers.Language
langMapInit sync.Once
}
// Language returns the Language associated with the given string.
func (ml *Multilingual) Language(lang string) *helpers.Language {
ml.langMapInit.Do(func() {
ml.langMap = make(map[string]*helpers.Language)
for _, l := range ml.Languages {
ml.langMap[l.Lang] = l
}
})
return ml.langMap[lang]
}
func getLanguages(cfg config.Provider) helpers.Languages {
if cfg.IsSet("languagesSorted") {
return cfg.Get("languagesSorted").(helpers.Languages)
}
return helpers.Languages{helpers.NewDefaultLanguage(cfg)}
}
func newMultiLingualFromSites(cfg config.Provider, sites ...*Site) (*Multilingual, error) {
languages := make(helpers.Languages, len(sites))
for i, s := range sites {
if s.Language == nil {
return nil, errors.New("Missing language for site")
}
languages[i] = s.Language
}
defaultLang := cfg.GetString("defaultContentLanguage")
if defaultLang == "" {
defaultLang = "en"
}
return &Multilingual{Languages: languages, DefaultLang: helpers.NewLanguage(defaultLang, cfg)}, nil
}
func newMultiLingualForLanguage(language *helpers.Language) *Multilingual {
languages := helpers.Languages{language}
return &Multilingual{Languages: languages, DefaultLang: language}
}
func (ml *Multilingual) enabled() bool {
return len(ml.Languages) > 1
}
func (s *Site) multilingualEnabled() bool {
if s.owner == nil {
return false
}
return s.owner.multilingual != nil && s.owner.multilingual.enabled()
}
func toSortedLanguages(cfg config.Provider, l map[string]interface{}) (helpers.Languages, error) {
langs := make(helpers.Languages, len(l))
i := 0
for lang, langConf := range l {
langsMap, err := cast.ToStringMapE(langConf)
if err != nil {
return nil, fmt.Errorf("Language config is not a map: %T", langConf)
}
language := helpers.NewLanguage(lang, cfg)
for loki, v := range langsMap {
switch loki {
case "title":
language.Title = cast.ToString(v)
case "languagename":
language.LanguageName = cast.ToString(v)
case "weight":
language.Weight = cast.ToInt(v)
case "params":
m := cast.ToStringMap(v)
// Needed for case insensitive fetching of params values
helpers.ToLowerMap(m)
for k, vv := range m {
language.SetParam(k, vv)
}
}
// Put all into the Params map
language.SetParam(loki, v)
// Also set it in the configuration map (for baseURL etc.)
language.Set(loki, v)
}
langs[i] = language
i++
}
sort.Sort(langs)
return langs, nil
}
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