88 lines
3.4 KiB
Kotlin
88 lines
3.4 KiB
Kotlin
/* Copyright 2022 Tusky Contributors
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.util
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import android.util.Log
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import androidx.appcompat.app.AppCompatDelegate
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import androidx.core.os.LocaleListCompat
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import com.keylesspalace.tusky.db.AccountEntity
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import java.util.Locale
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private const val TAG: String = "LocaleUtils"
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private fun LocaleListCompat.toList(): List<Locale> {
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val list = mutableListOf<Locale>()
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for (index in 0 until this.size()) {
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this[index]?.let { list.add(it) }
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}
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return list
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}
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// Ensure that the locale whose code matches the given language is first in the list
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private fun ensureLanguagesAreFirst(locales: MutableList<Locale>, languages: List<String>) {
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for (language in languages.reversed()) {
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// Iterate prioritized languages in reverse to retain the order once bubbled to the top
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var currentLocaleIndex = locales.indexOfFirst { it.language == language }
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if (currentLocaleIndex < 0) {
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// Recheck against modern language codes
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// This should only happen when replying or when the per-account post language is set
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// to a modern code
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currentLocaleIndex = locales.indexOfFirst { it.modernLanguageCode == language }
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if (currentLocaleIndex < 0) {
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// This can happen when:
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// - Your per-account posting language is set to one android doesn't know (e.g. toki pona)
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// - Replying to a post in a language android doesn't know
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locales.add(0, Locale(language))
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Log.w(TAG, "Attempting to use unknown language tag '$language'")
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continue
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}
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}
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if (currentLocaleIndex > 0) {
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// Move preselected locale to the top
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locales.add(0, locales.removeAt(currentLocaleIndex))
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}
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}
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}
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fun getInitialLanguages(
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language: String? = null,
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activeAccount: AccountEntity? = null
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): List<String> {
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val selected = listOfNotNull(language, activeAccount?.defaultPostLanguage)
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val system = AppCompatDelegate.getApplicationLocales().toList() +
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LocaleListCompat.getDefault().toList()
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return (selected + system.map { it.language }).distinct().filter { it.isNotEmpty() }
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}
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fun getLocaleList(initialLanguages: List<String>): List<Locale> {
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val locales = Locale.getAvailableLocales().filter {
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// Only "base" languages, "en" but not "en_DK"
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it.country.isNullOrEmpty() &&
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it.script.isNullOrEmpty() &&
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it.variant.isNullOrEmpty()
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}.sortedBy { it.displayName }.toMutableList()
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ensureLanguagesAreFirst(locales, initialLanguages)
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return locales
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}
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fun localeNameForUntrustedISO639LangCode(code: String): String {
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// It seems like it never throws?
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return Locale(code).displayName
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}
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