19 lines
575 B
Kotlin
19 lines
575 B
Kotlin
import java.io.*
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fun String.rot13() = map {
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when {
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it.isUpperCase() -> { val x = it + 13; if (x > 'Z') x - 26 else x }
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it.isLowerCase() -> { val x = it + 13; if (x > 'z') x - 26 else x }
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else -> it
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} }.toCharArray()
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fun InputStreamReader.println() =
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try { BufferedReader(this).forEachLine { println(it.rot13()) } }
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catch (e: IOException) { e.printStackTrace() }
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fun main(args: Array<String>) {
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if (args.any())
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args.forEach { FileReader(it).println() }
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else
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InputStreamReader(System.`in`).println()
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}
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