diff options
Diffstat (limited to 'langs/config.go')
| -rw-r--r-- | langs/config.go | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/langs/config.go b/langs/config.go new file mode 100644 index 000000000..927f3558f --- /dev/null +++ b/langs/config.go @@ -0,0 +1,217 @@ +// Copyright 2018 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 langs + +import ( + "fmt" + "path/filepath" + "sort" + "strings" + + "github.com/gohugoio/hugo/common/maps" + + "github.com/spf13/cast" + + "github.com/pkg/errors" + + "github.com/gohugoio/hugo/config" +) + +type LanguagesConfig struct { + Languages Languages + Multihost bool + DefaultContentLanguageInSubdir bool +} + +func LoadLanguageSettings(cfg config.Provider, oldLangs Languages) (c LanguagesConfig, err error) { + + defaultLang := cfg.GetString("defaultContentLanguage") + if defaultLang == "" { + defaultLang = "en" + cfg.Set("defaultContentLanguage", defaultLang) + } + + var languages map[string]interface{} + + languagesFromConfig := cfg.GetStringMap("languages") + disableLanguages := cfg.GetStringSlice("disableLanguages") + + if len(disableLanguages) == 0 { + languages = languagesFromConfig + } else { + languages = make(map[string]interface{}) + for k, v := range languagesFromConfig { + for _, disabled := range disableLanguages { + if disabled == defaultLang { + return c, fmt.Errorf("cannot disable default language %q", defaultLang) + } + + if strings.EqualFold(k, disabled) { + v.(map[string]interface{})["disabled"] = true + break + } + } + languages[k] = v + } + } + + var languages2 Languages + + if len(languages) == 0 { + languages2 = append(languages2, NewDefaultLanguage(cfg)) + } else { + languages2, err = toSortedLanguages(cfg, languages) + if err != nil { + return c, errors.Wrap(err, "Failed to parse multilingual config") + } + } + + if oldLangs != nil { + // When in multihost mode, the languages are mapped to a server, so + // some structural language changes will need a restart of the dev server. + // The validation below isn't complete, but should cover the most + // important cases. + var invalid bool + if languages2.IsMultihost() != oldLangs.IsMultihost() { + invalid = true + } else { + if languages2.IsMultihost() && len(languages2) != len(oldLangs) { + invalid = true + } + } + + if invalid { + return c, errors.New("language change needing a server restart detected") + } + + if languages2.IsMultihost() { + // We need to transfer any server baseURL to the new language + for i, ol := range oldLangs { + nl := languages2[i] + nl.Set("baseURL", ol.GetString("baseURL")) + } + } + } + + // The defaultContentLanguage is something the user has to decide, but it needs + // to match a language in the language definition list. + langExists := false + for _, lang := range languages2 { + if lang.Lang == defaultLang { + langExists = true + break + } + } + + if !langExists { + return c, fmt.Errorf("site config value %q for defaultContentLanguage does not match any language definition", defaultLang) + } + + c.Languages = languages2 + c.Multihost = languages2.IsMultihost() + c.DefaultContentLanguageInSubdir = c.Multihost + + sortedDefaultFirst := make(Languages, len(c.Languages)) + for i, v := range c.Languages { + sortedDefaultFirst[i] = v + } + sort.Slice(sortedDefaultFirst, func(i, j int) bool { + li, lj := sortedDefaultFirst[i], sortedDefaultFirst[j] + if li.Lang == defaultLang { + return true + } + + if lj.Lang == defaultLang { + return false + } + + return i < j + }) + + cfg.Set("languagesSorted", c.Languages) + cfg.Set("languagesSortedDefaultFirst", sortedDefaultFirst) + cfg.Set("multilingual", len(languages2) > 1) + + multihost := c.Multihost + + if multihost { + cfg.Set("defaultContentLanguageInSubdir", true) + cfg.Set("multihost", true) + } + + if multihost { + // The baseURL may be provided at the language level. If that is true, + // then every language must have a baseURL. In this case we always render + // to a language sub folder, which is then stripped from all the Permalink URLs etc. + for _, l := range languages2 { + burl := l.GetLocal("baseURL") + if burl == nil { + return c, errors.New("baseURL must be set on all or none of the languages") + } + } + + } + + return c, nil +} + +func toSortedLanguages(cfg config.Provider, l map[string]interface{}) (Languages, error) { + languages := make(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 := 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 "contentdir": + language.ContentDir = filepath.Clean(cast.ToString(v)) + case "disabled": + language.Disabled = cast.ToBool(v) + case "params": + m := cast.ToStringMap(v) + // Needed for case insensitive fetching of params values + maps.ToLower(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) + } + + languages[i] = language + i++ + } + + sort.Sort(languages) + + return languages, nil +} |