github.com/graemephi/kahugo@v0.62.3-0.20211121071557-d78c0423784d/hugolib/multilingual.go (about)

     1  // Copyright 2019 The Hugo Authors. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package hugolib
    15  
    16  import (
    17  	"errors"
    18  	"sync"
    19  
    20  	"github.com/gohugoio/hugo/langs"
    21  
    22  	"github.com/gohugoio/hugo/config"
    23  )
    24  
    25  // Multilingual manages the all languages used in a multilingual site.
    26  type Multilingual struct {
    27  	Languages langs.Languages
    28  
    29  	DefaultLang *langs.Language
    30  
    31  	langMap     map[string]*langs.Language
    32  	langMapInit sync.Once
    33  }
    34  
    35  // Language returns the Language associated with the given string.
    36  func (ml *Multilingual) Language(lang string) *langs.Language {
    37  	ml.langMapInit.Do(func() {
    38  		ml.langMap = make(map[string]*langs.Language)
    39  		for _, l := range ml.Languages {
    40  			ml.langMap[l.Lang] = l
    41  		}
    42  	})
    43  	return ml.langMap[lang]
    44  }
    45  
    46  func getLanguages(cfg config.Provider) langs.Languages {
    47  	if cfg.IsSet("languagesSorted") {
    48  		return cfg.Get("languagesSorted").(langs.Languages)
    49  	}
    50  
    51  	return langs.Languages{langs.NewDefaultLanguage(cfg)}
    52  }
    53  
    54  func newMultiLingualFromSites(cfg config.Provider, sites ...*Site) (*Multilingual, error) {
    55  	languages := make(langs.Languages, len(sites))
    56  
    57  	for i, s := range sites {
    58  		if s.language == nil {
    59  			return nil, errors.New("missing language for site")
    60  		}
    61  		languages[i] = s.language
    62  	}
    63  
    64  	defaultLang := cfg.GetString("defaultContentLanguage")
    65  
    66  	if defaultLang == "" {
    67  		defaultLang = "en"
    68  	}
    69  
    70  	return &Multilingual{Languages: languages, DefaultLang: langs.NewLanguage(defaultLang, cfg)}, nil
    71  }
    72  
    73  func (ml *Multilingual) enabled() bool {
    74  	return len(ml.Languages) > 1
    75  }
    76  
    77  func (s *Site) multilingualEnabled() bool {
    78  	if s.h == nil {
    79  		return false
    80  	}
    81  	return s.h.multilingual != nil && s.h.multilingual.enabled()
    82  }