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Diffstat (limited to 'taler-kotlin-common/src/main/java/net/taler/common/Amount.kt')
-rw-r--r--taler-kotlin-common/src/main/java/net/taler/common/Amount.kt45
1 files changed, 45 insertions, 0 deletions
diff --git a/taler-kotlin-common/src/main/java/net/taler/common/Amount.kt b/taler-kotlin-common/src/main/java/net/taler/common/Amount.kt
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+++ b/taler-kotlin-common/src/main/java/net/taler/common/Amount.kt
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+/*
+ * 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
+
+data class Amount(val currency: String, val amount: String) {
+
+ companion object {
+
+ private val SIGNED_REGEX = Regex("""([+\-])(\w+):([0-9.]+)""")
+
+ @Suppress("unused")
+ fun fromString(strAmount: String): Amount {
+ val components = strAmount.split(":")
+ return Amount(components[0], components[1])
+ }
+
+ fun fromStringSigned(strAmount: String): Amount? {
+ val groups = SIGNED_REGEX.matchEntire(strAmount)?.groupValues ?: emptyList()
+ if (groups.size < 4) return null
+ var amount = groups[3].toDoubleOrNull() ?: return null
+ if (groups[1] == "-") amount *= -1
+ val currency = groups[2]
+ val amountStr = amount.toString()
+ // only display as many digits as required to precisely render the balance
+ return Amount(currency, amountStr.removeSuffix(".0"))
+ }
+ }
+
+ override fun toString() = "$amount $currency"
+
+}