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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2020 WireGuard LLC. All Rights Reserved.
*/
package l18n
import (
"sync"
"golang.org/x/sys/windows"
"golang.org/x/text/language"
"golang.org/x/text/message"
)
var printer *message.Printer
var printerLock sync.Mutex
// prn returns the printer for user preferred UI language.
func prn() *message.Printer {
if printer != nil {
return printer
}
printerLock.Lock()
if printer != nil {
printerLock.Unlock()
return printer
}
printer = message.NewPrinter(lang())
printerLock.Unlock()
return printer
}
// lang returns the user preferred UI language we have most confident translation in the default catalog available.
func lang() (tag language.Tag) {
tag = language.English
confidence := language.No
languages, err := windows.GetUserPreferredUILanguages(windows.MUI_LANGUAGE_NAME)
if err != nil {
return
}
for i := range languages {
t, _, c := message.DefaultCatalog.Matcher().Match(message.MatchLanguage(languages[i]))
if c > confidence {
tag = t
confidence = c
}
}
return
}
// Sprintf is like fmt.Sprintf, but using language-specific formatting.
func Sprintf(key message.Reference, a ...interface{}) string {
return prn().Sprintf(key, a...)
}
// EnumerationSeparator returns enumeration separator. For English and western languages,
// enumeration separator is a comma followed by a space (i.e. ", "). For Chinese, it returns
// "\u3001".
func EnumerationSeparator() string {
// BUG: We could just use `Sprintf(", " /* ...translator instructions... */)` and let the
// individual locale catalog handle its translation. Unfortunately, the gotext utility tries to
// be nice to translators and skips all strings without letters when updating catalogs.
return Sprintf("[EnumerationSeparator]" /* Text to insert between items when listing - most western languages will translate ‘[EnumerationSeparator]’ into ‘, ’ to produce lists like ‘apple, orange, strawberry’. Eastern languages might translate into ‘、’ to produce lists like ‘リンゴ、オレンジ、イチゴ’. */)
}
// UnitSeparator returns the separator to use when concatenating multiple units of the same metric
// (e.g. "1 minute, 32 seconds", "6 feet, 1 inch"). For English and western languages, unit
// separator is a comma followed by a space (i.e. ", "). For Slovenian and Japanese, it returns
// just space.
func UnitSeparator() string {
// BUG: We could just use `Sprintf(", " /* ...translator instructions... */)` and let the
// individual locale catalog handle its translation. Unfortunately, the gotext utility tries to
// be nice to translators and skips all strings without letters when updating catalogs.
return Sprintf("[UnitSeparator]" /* Text to insert when combining units of a measure - most languages will translate ‘[UnitSeparator]’ into ‘ ’ (space) to produce lists like ‘2 minuti 30 sekund’, or empty string ‘’ to produce ‘2分30秒’. */)
}
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