1 files changed, 57 insertions, 0 deletions
diff --git a/taler-kotlin-android/src/main/java/net/taler/common/TalerUtils.kt b/taler-kotlin-android/src/main/java/net/taler/common/TalerUtils.kt
new file mode 100644
index 0000000..bb2e78a
--- /dev/null
+++ b/taler-kotlin-android/src/main/java/net/taler/common/TalerUtils.kt
@@ -0,0 +1,57 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2020 Taler Systems S.A.
+ *
+ * GNU Taler is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3, or (at your option) any later version.
+ *
+ * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+package net.taler.common
+
+import androidx.annotation.RequiresApi
+import androidx.core.os.LocaleListCompat
+import java.util.Locale
+
+object TalerUtils {
+
+    @RequiresApi(26)
+    fun getLocalizedString(map: Map<String, String>?, default: String): String {
+        // just return the default, if it is the only element
+        if (map == null) return default
+        // create a priority list of language ranges from system locales
+        val locales = LocaleListCompat.getDefault()
+        val priorityList = ArrayList<Locale.LanguageRange>(locales.size())
+        for (i in 0 until locales.size()) {
+            priorityList.add(Locale.LanguageRange(locales[i].toLanguageTag()))
+        }
+        // create a list of locales available in the given map
+        val availableLocales = map.keys.mapNotNull {
+            if (it == "_") return@mapNotNull null
+            val list = it.split("_")
+            when (list.size) {
+                1 -> Locale(list[0])
+                2 -> Locale(list[0], list[1])
+                3 -> Locale(list[0], list[1], list[2])
+                else -> null
+            }
+        }
+        val match = Locale.lookup(priorityList, availableLocales)
+        return match?.toString()?.let { map[it] } ?: default
+    }
+
+}
+
+/**
+ * Returns the current time in milliseconds epoch rounded to nearest seconds.
+ */
+fun now(): Long {
+    return ((System.currentTimeMillis() + 500) / 1000) * 1000
+}