77 lines
2.9 KiB
Kotlin
77 lines
2.9 KiB
Kotlin
package dev.inmo.krontab.internal
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import dev.inmo.krontab.utils.clamp
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typealias Converter<T> = (Int) -> T
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internal val intToByteConverter: Converter<Byte> = { it: Int -> it.toByte() }
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internal val intToIntConverter: Converter<Int> = { it: Int -> it }
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private fun <T> createSimpleScheduler(from: String, dataRange: IntRange, dataConverter: Converter<T>): List<T>? {
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val things = from.split(",")
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val results = things.flatMap {
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val currentToken = it.toLowerCase().replace(
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"f", dataRange.first.toString()
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).replace(
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"l", dataRange.last.toString()
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)
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when {
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currentToken.contains("-") -> {
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val splitted = currentToken.split("-")
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(splitted.first().toInt().clamp(dataRange) .. splitted[1].toInt().clamp(dataRange)).toList()
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}
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currentToken.contains("/") -> {
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val (start, step) = currentToken.split("/")
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val startNum = (if (start.isEmpty() || start == "*") {
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0
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} else {
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start.toInt()
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}).clamp(dataRange)
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val stepNum = step.toInt().clamp(dataRange)
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(startNum .. dataRange.last step stepNum).map { it }
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}
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currentToken == "*" -> return null
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else -> listOf(currentToken.toInt().clamp(dataRange))
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}
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}
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return results.map(dataConverter)
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}
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internal fun parseOffset(from: String?) = from ?.let { if (it.endsWith("o")) it.removeSuffix("o").toIntOrNull() else null }
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internal fun parseYears(from: String?) = from ?.let { createSimpleScheduler(from, yearRange, intToIntConverter) ?.toTypedArray() }
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internal fun parseMonths(from: String) = createSimpleScheduler(from, monthRange, intToByteConverter) ?.toTypedArray()
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internal fun parseDaysOfMonth(from: String) = createSimpleScheduler(from, dayOfMonthRange, intToByteConverter) ?.toTypedArray()
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internal fun parseHours(from: String) = createSimpleScheduler(from, hoursRange, intToByteConverter) ?.toTypedArray()
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internal fun parseMinutes(from: String) = createSimpleScheduler(from, minutesRange, intToByteConverter) ?.toTypedArray()
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internal fun parseSeconds(from: String) = createSimpleScheduler(from, secondsRange, intToByteConverter) ?.toTypedArray()
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internal fun <T> Array<T>.fillWith(
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whereToPut: MutableList<CronDateTime>,
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createFactory: (CronDateTime, T) -> CronDateTime
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) {
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val previousValues = whereToPut.toList()
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whereToPut.clear()
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previousValues.forEach { previousValue ->
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forEach {
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whereToPut.add(createFactory(previousValue, it))
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}
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}
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}
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internal fun <T> T.fillWith(
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whereToPut: MutableList<CronDateTime>,
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createFactory: (CronDateTime, T) -> CronDateTime
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) {
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val previousValues = whereToPut.toList()
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whereToPut.clear()
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previousValues.forEach { previousValue ->
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whereToPut.add(createFactory(previousValue, this))
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}
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}
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