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DecimalFormats are not thread safe

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Vitor Pamplona 2024-05-13 15:39:06 -04:00
parent 53ba65cac2
commit 7310ef175f
2 changed files with 76 additions and 31 deletions
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31
app/src/main/java/com/vitorpamplona/amethyst/ui/note/ReactionsRow.kt
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@ -140,9 +140,6 @@ import kotlinx.collections.immutable.toImmutableMap
import kotlinx.collections.immutable.toImmutableSet
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import java.math.BigDecimal
import java.math.RoundingMode
import java.text.DecimalFormat
import kotlin.math.roundToInt
@Composable
@ -1519,31 +1516,3 @@ fun showCount(count: Int?): String {
else -> "$count"
}
}
val TenGiga = BigDecimal(10000000000)
val OneGiga = BigDecimal(1000000000)
val TenMega = BigDecimal(10000000)
val OneMega = BigDecimal(1000000)
val TenKilo = BigDecimal(10000)
val OneKilo = BigDecimal(1000)
var dfGBig: DecimalFormat = DecimalFormat("#.#G")
var dfGSmall: DecimalFormat = DecimalFormat("#.0G")
var dfMBig: DecimalFormat = DecimalFormat("#.#M")
var dfMSmall: DecimalFormat = DecimalFormat("#.0M")
var dfK: DecimalFormat = DecimalFormat("#.#k")
var dfN: DecimalFormat = DecimalFormat("#")
fun showAmount(amount: BigDecimal?): String {
if (amount == null) return ""
if (amount.abs() < BigDecimal(0.01)) return ""
return when {
amount >= TenGiga -> dfGBig.format(amount.div(OneGiga).setScale(0, RoundingMode.HALF_UP))
amount >= OneGiga -> dfGSmall.format(amount.div(OneGiga).setScale(0, RoundingMode.HALF_UP))
amount >= TenMega -> dfMBig.format(amount.div(OneMega).setScale(0, RoundingMode.HALF_UP))
amount >= OneMega -> dfMSmall.format(amount.div(OneMega).setScale(0, RoundingMode.HALF_UP))
amount >= TenKilo -> dfK.format(amount.div(OneKilo).setScale(0, RoundingMode.HALF_UP))
else -> dfN.format(amount)
}
}

76
app/src/main/java/com/vitorpamplona/amethyst/ui/note/ZapFormatter.kt Normal file
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@ -0,0 +1,76 @@
/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.ui.note
import java.math.BigDecimal
import java.math.RoundingMode
import java.text.DecimalFormat
val TenGiga = BigDecimal(10000000000)
val OneGiga = BigDecimal(1000000000)
val TenMega = BigDecimal(10000000)
val OneMega = BigDecimal(1000000)
val TenKilo = BigDecimal(10000)
val OneKilo = BigDecimal(1000)
private val dfGBig =
object : ThreadLocal<DecimalFormat>() {
override fun initialValue() = DecimalFormat("#.#G")
}
private val dfGSmall =
object : ThreadLocal<DecimalFormat>() {
override fun initialValue() = DecimalFormat("#.0G")
}
private val dfMBig =
object : ThreadLocal<DecimalFormat>() {
override fun initialValue() = DecimalFormat("#.#M")
}
private val dfMSmall =
object : ThreadLocal<DecimalFormat>() {
override fun initialValue() = DecimalFormat("#.0M")
}
private val dfK =
object : ThreadLocal<DecimalFormat>() {
override fun initialValue() = DecimalFormat("#.#k")
}
private val dfN =
object : ThreadLocal<DecimalFormat>() {
override fun initialValue() = DecimalFormat("#")
}
fun showAmount(amount: BigDecimal?): String {
if (amount == null) return ""
if (amount.abs() < BigDecimal(0.01)) return ""
return when {
amount >= TenGiga -> dfGBig.get().format(amount.div(OneGiga).setScale(0, RoundingMode.HALF_UP))
amount >= OneGiga -> dfGSmall.get().format(amount.div(OneGiga).setScale(0, RoundingMode.HALF_UP))
amount >= TenMega -> dfMBig.get().format(amount.div(OneMega).setScale(0, RoundingMode.HALF_UP))
amount >= OneMega -> dfMSmall.get().format(amount.div(OneMega).setScale(0, RoundingMode.HALF_UP))
amount >= TenKilo -> dfK.get().format(amount.div(OneKilo).setScale(0, RoundingMode.HALF_UP))
else -> dfN.get().format(amount)
}
}