commonMain.korlibs.number.StringExt.kt Maven / Gradle / Ivy

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package korlibs.number

import korlibs.math.*
import kotlin.math.*

val Double.niceStr: String get() = niceStr(-1, zeroSuffix = false)
fun Double.niceStr(decimalPlaces: Int, zeroSuffix: Boolean = false): String = buildString { appendNice([email protected](decimalPlaces), zeroSuffix = zeroSuffix && decimalPlaces > 0) }

val Float.niceStr: String get() = niceStr(-1, zeroSuffix = false)
fun Float.niceStr(decimalPlaces: Int, zeroSuffix: Boolean = false): String = buildString { appendNice([email protected](decimalPlaces), zeroSuffix = zeroSuffix && decimalPlaces > 0) }

fun StringBuilder.appendNice(value: Double, zeroSuffix: Boolean = false): Unit {
    when {
        round(value).isAlmostEquals(value) -> when {
            value >= Int.MIN_VALUE.toDouble() && value <= Int.MAX_VALUE.toDouble() -> append(round(value).toInt())
            else -> append(round(value).toLong())
        }
        else -> {
            append(value)
            return
        }
    }
    if (zeroSuffix) append(".0")
}
fun StringBuilder.appendNice(value: Float, zeroSuffix: Boolean = false): Unit {
    when {
        round(value).isAlmostEquals(value) -> when {
            value >= Int.MIN_VALUE.toFloat() && value <= Int.MAX_VALUE.toFloat() -> append(value.toInt())
            else -> append(value.toLong())
        }
        else -> {
            append(value)
            return
        }
    }
    if (zeroSuffix) append(".0")
}
fun StringBuilder.appendGenericArray(size: Int, appendElement: StringBuilder.(Int) -> Unit) {
    append("[")
    for (n in 0 until size) {
        if (n != 0) append(", ")
        appendElement(n)
    }
    append("]")
}

//val Float.niceStr: String get() = buildString { appendNice(this@niceStr) }
//fun Float.niceStr(decimalPlaces: Int): String = roundDecimalPlaces(decimalPlaces).niceStr
//val Float.niceStr: String get() = buildString { appendNice(this@niceStr) }
//fun Float.niceStr(decimalPlaces: Int): String = roundDecimalPlaces(decimalPlaces).niceStr

/*
internal fun StringBuilder.appendNice(value: Double) {
    when {
        round(value).isAlmostEquals(value) -> when {
            value >= Int.MIN_VALUE.toDouble() && value <= Int.MAX_VALUE.toDouble() -> append(value.toInt())
            else -> append(value.toLong())
        }
        else -> append(value)
    }
}
internal fun StringBuilder.appendNice(value: Float) {
    when {
        round(value).isAlmostEquals(value) -> when {
            value >= Int.MIN_VALUE.toFloat() && value <= Int.MAX_VALUE.toFloat() -> append(value.toInt())
            else -> append(value.toLong())
        }
        else -> append(value)
    }
}
*/