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authorWim <wim@42.be>2020-08-10 00:29:54 +0200
committerGitHub <noreply@github.com>2020-08-10 00:29:54 +0200
commit4e50fd864921c556988c919269448efdb90fa961 (patch)
treea3625f03f8de3c4f3841364000a4ea3aa42c1533 /vendor/github.com/mattermost/go-i18n/i18n/i18n.go
parentdfdffa0027334e55ce213fc6eb62206dbf48baf6 (diff)
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Use mattermost v5 module (#1192)
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+// Package i18n supports string translations with variable substitution and CLDR pluralization.
+// It is intended to be used in conjunction with the goi18n command, although that is not strictly required.
+//
+// Initialization
+//
+// Your Go program should load translations during its initialization.
+// i18n.MustLoadTranslationFile("path/to/fr-FR.all.json")
+// If your translations are in a file format not supported by (Must)?LoadTranslationFile,
+// then you can use the AddTranslation function to manually add translations.
+//
+// Fetching a translation
+//
+// Use Tfunc or MustTfunc to fetch a TranslateFunc that will return the translated string for a specific language.
+// func handleRequest(w http.ResponseWriter, r *http.Request) {
+// cookieLang := r.Cookie("lang")
+// acceptLang := r.Header.Get("Accept-Language")
+// defaultLang = "en-US" // known valid language
+// T, err := i18n.Tfunc(cookieLang, acceptLang, defaultLang)
+// fmt.Println(T("Hello world"))
+// }
+//
+// Usually it is a good idea to identify strings by a generic id rather than the English translation,
+// but the rest of this documentation will continue to use the English translation for readability.
+// T("Hello world") // ok
+// T("programGreeting") // better!
+//
+// Variables
+//
+// TranslateFunc supports strings that have variables using the text/template syntax.
+// T("Hello {{.Person}}", map[string]interface{}{
+// "Person": "Bob",
+// })
+//
+// Pluralization
+//
+// TranslateFunc supports the pluralization of strings using the CLDR pluralization rules defined here:
+// http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html
+// T("You have {{.Count}} unread emails.", 2)
+// T("I am {{.Count}} meters tall.", "1.7")
+//
+// Plural strings may also have variables.
+// T("{{.Person}} has {{.Count}} unread emails", 2, map[string]interface{}{
+// "Person": "Bob",
+// })
+//
+// Sentences with multiple plural components can be supported with nesting.
+// T("{{.Person}} has {{.Count}} unread emails in the past {{.Timeframe}}.", 3, map[string]interface{}{
+// "Person": "Bob",
+// "Timeframe": T("{{.Count}} days", 2),
+// })
+//
+// Templates
+//
+// You can use the .Funcs() method of a text/template or html/template to register a TranslateFunc
+// for usage inside of that template.
+package i18n
+
+import (
+ "github.com/mattermost/go-i18n/i18n/bundle"
+ "github.com/mattermost/go-i18n/i18n/language"
+ "github.com/mattermost/go-i18n/i18n/translation"
+)
+
+// TranslateFunc returns the translation of the string identified by translationID.
+//
+// If there is no translation for translationID, then the translationID itself is returned.
+// This makes it easy to identify missing translations in your app.
+//
+// If translationID is a non-plural form, then the first variadic argument may be a map[string]interface{}
+// or struct that contains template data.
+//
+// If translationID is a plural form, the function accepts two parameter signatures
+// 1. T(count int, data struct{})
+// The first variadic argument must be an integer type
+// (int, int8, int16, int32, int64) or a float formatted as a string (e.g. "123.45").
+// The second variadic argument may be a map[string]interface{} or struct{} that contains template data.
+// 2. T(data struct{})
+// data must be a struct{} or map[string]interface{} that contains a Count field and the template data,
+// Count field must be an integer type (int, int8, int16, int32, int64)
+// or a float formatted as a string (e.g. "123.45").
+type TranslateFunc func(translationID string, args ...interface{}) string
+
+// IdentityTfunc returns a TranslateFunc that always returns the translationID passed to it.
+//
+// It is a useful placeholder when parsing a text/template or html/template
+// before the actual Tfunc is available.
+func IdentityTfunc() TranslateFunc {
+ return func(translationID string, args ...interface{}) string {
+ return translationID
+ }
+}
+
+var defaultBundle = bundle.New()
+
+// MustLoadTranslationFile is similar to LoadTranslationFile
+// except it panics if an error happens.
+func MustLoadTranslationFile(filename string) {
+ defaultBundle.MustLoadTranslationFile(filename)
+}
+
+// LoadTranslationFile loads the translations from filename into memory.
+//
+// The language that the translations are associated with is parsed from the filename (e.g. en-US.json).
+//
+// Generally you should load translation files once during your program's initialization.
+func LoadTranslationFile(filename string) error {
+ return defaultBundle.LoadTranslationFile(filename)
+}
+
+// ParseTranslationFileBytes is similar to LoadTranslationFile except it parses the bytes in buf.
+//
+// It is useful for parsing translation files embedded with go-bindata.
+func ParseTranslationFileBytes(filename string, buf []byte) error {
+ return defaultBundle.ParseTranslationFileBytes(filename, buf)
+}
+
+// AddTranslation adds translations for a language.
+//
+// It is useful if your translations are in a format not supported by LoadTranslationFile.
+func AddTranslation(lang *language.Language, translations ...translation.Translation) {
+ defaultBundle.AddTranslation(lang, translations...)
+}
+
+// LanguageTags returns the tags of all languages that have been added.
+func LanguageTags() []string {
+ return defaultBundle.LanguageTags()
+}
+
+// LanguageTranslationIDs returns the ids of all translations that have been added for a given language.
+func LanguageTranslationIDs(languageTag string) []string {
+ return defaultBundle.LanguageTranslationIDs(languageTag)
+}
+
+// MustTfunc is similar to Tfunc except it panics if an error happens.
+func MustTfunc(languageSource string, languageSources ...string) TranslateFunc {
+ return TranslateFunc(defaultBundle.MustTfunc(languageSource, languageSources...))
+}
+
+// Tfunc returns a TranslateFunc that will be bound to the first language which
+// has a non-zero number of translations.
+//
+// It can parse languages from Accept-Language headers (RFC 2616).
+func Tfunc(languageSource string, languageSources ...string) (TranslateFunc, error) {
+ tfunc, err := defaultBundle.Tfunc(languageSource, languageSources...)
+ return TranslateFunc(tfunc), err
+}
+
+// MustTfuncAndLanguage is similar to TfuncAndLanguage except it panics if an error happens.
+func MustTfuncAndLanguage(languageSource string, languageSources ...string) (TranslateFunc, *language.Language) {
+ tfunc, lang := defaultBundle.MustTfuncAndLanguage(languageSource, languageSources...)
+ return TranslateFunc(tfunc), lang
+}
+
+// TfuncAndLanguage is similar to Tfunc except it also returns the language which TranslateFunc is bound to.
+func TfuncAndLanguage(languageSource string, languageSources ...string) (TranslateFunc, *language.Language, error) {
+ tfunc, lang, err := defaultBundle.TfuncAndLanguage(languageSource, languageSources...)
+ return TranslateFunc(tfunc), lang, err
+}