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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"
}
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