89 lines
2.1 KiB
Kotlin
89 lines
2.1 KiB
Kotlin
package com.sw.inbound.ext
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import java.math.BigDecimal
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import java.math.RoundingMode
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fun String.isValidAmount(): Boolean {
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// 空字符串允许（用于删除所有字符）
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if (this.isEmpty()) return true
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// 检查是否只包含数字和小数点
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if (!matches(Regex("^\\d*\\.?\\d*$"))) return false
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// 检查小数点数量（最多一个）
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if (count { it == '.' } > 1) return false
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// 检查小数点后位数（最多2位）
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if (contains('.')) {
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val decimalPart = substringAfter('.')
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if (decimalPart.length > 2) return false
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}
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// 检查不以小数点开头
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if (startsWith('.')) return false
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return true
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}
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fun String.isNumeric(): Boolean {
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return this.matches("-?\\d+(\\.\\d+)?".toRegex())
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}
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fun String.toFormattedString(decimalPlaces: Int = 2): String {
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return when (this) {
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else -> "%.${decimalPlaces}f".format(this)
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}
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}
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fun String.toSafeBigDecimal(
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scale: Int = 2,
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roundingMode: RoundingMode = RoundingMode.HALF_UP
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): BigDecimal {
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return when {
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this.isBlank() -> BigDecimal.ZERO.setScale(scale, roundingMode)
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this == "." -> BigDecimal.ZERO.setScale(scale, roundingMode)
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else -> try {
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BigDecimal(this.trim())
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.setScale(scale, roundingMode)
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} catch (e: Exception) {
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BigDecimal.ZERO.setScale(scale, roundingMode)
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}
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}
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}
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fun String.isValidNumber(): Boolean {
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return matches(Regex("^\\d*$"))
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}
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fun String.toSafeInt(): Int {
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return if (this.isEmpty()) {
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0
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} else {
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this.toInt()
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}
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}
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fun String.toSafeDouble(): Double {
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return if (this.isEmpty()) {
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0.0
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} else {
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this.toDouble()
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}
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}
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fun String.isValidFloat(): Boolean {
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if (startsWith(".")) return false
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val decimalRegex = Regex("^\\d*\\.?\\d{0,2}$")
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return this.matches(decimalRegex)
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// return input.matches(Regex("-?\\d+(\\.\\d+)?"))
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}
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fun String.toSafeFloat(maxDecimalDigits: Int = 2): Float {
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return if (this.isEmpty()) {
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0f
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} else if (isValidFloat()) {
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toFloat()
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} else {
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0f
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}
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} |