obj decode/encode for compose navigation

Roctik

Mar 20th, 2025

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Kotlin 2.13 KB | None | 0 0

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import kotlin.reflect.full.memberProperties
import kotlin.reflect.full.primaryConstructor
import java.net.URLEncoder
import java.net.URLDecoder
import java.nio.charset.StandardCharsets
fun String.encodeToUtf8(): String = URLEncoder.encode(this, StandardCharsets.UTF_8.toString())
fun String.decodeFromUtf8(): String = URLDecoder.decode(this, StandardCharsets.UTF_8.toString())
fun Any?.encodedIfPossible(): Any? {
return when (this) {
is String -> this.encodeToUtf8()
is List<*> -> this.map { it.encodedIfPossible() }
is Set<*> -> this.map { it.encodedIfPossible() }.toSet()
is Map<*, *> -> this.mapValues { it.value.encodedIfPossible() }
else -> this?.let { if (it::class.isData) it.encodedStrings() else it }
}
}
fun <T : Any> T.encodedStrings(): T {
val clazz = this::class
val constructor = clazz.primaryConstructor
?: throw IllegalArgumentException("Class ${clazz.simpleName} must have a primary constructor")
val args = constructor.parameters.associateWith { param ->
val property = clazz.memberProperties.firstOrNull { it.name == param.name }
val value = property?.call(this)
value.encodedIfPossible()
}
return constructor.callBy(args)
}
fun Any?.decodedIfPossible(): Any? {
return when (this) {
is String -> this.decodeFromUtf8()
is List<*> -> this.map { it.decodedIfPossible() }
is Set<*> -> this.map { it.decodedIfPossible() }.toSet()
is Map<*, *> -> this.mapValues { it.value.decodedIfPossible() }
else -> this?.let { if (it::class.isData) it.decodedStrings() else it }
}
}
fun <T : Any> T.decodedStrings(): T {
val clazz = this::class
val constructor = clazz.primaryConstructor
?: throw IllegalArgumentException("Class ${clazz.simpleName} must have a primary constructor")
val args = constructor.parameters.associateWith { param ->
val property = clazz.memberProperties.firstOrNull { it.name == param.name }
val value = property?.call(this)
value.decodedIfPossible()
}
return constructor.callBy(args)
}

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