Loading a text file to a script

funkotlin.kt

fun readFileLineByLineUsingForEachLine(fileName: String) 
  = File(fileName).forEachLine { println(it) }

process.kt

private fun processData(fileName: String, block: (line: String) -> Unit) {
    val file = File(fileName)
    try {
        BufferedReader(FileReader(file)).use { br ->
            var line: String?
            while (br.readLine().also { line = it } != null) {
                line?.let { block(it) }
            }
        }
    } catch (e: IOException) {
        println("Unable to read the file")
        e.printStackTrace()
    }
}

processfromres.kt

private fun processData(fileName: String, block: (line: String) -> Unit) {
    try {
        object {}.javaClass.getResourceAsStream(fileName)?.bufferedReader()?.use { br ->
            var line: String?
            while (br.readLine().also { line = it } != null) {
                line?.let { block(it) }
            }
        }
    } catch (e: IOException) {
        println("Unable to read the file")
        e.printStackTrace()
    }
}

standard.kt

import java.io.BufferedReader
import java.io.File
import java.io.FileReader
import java.io.IOException
 
fun main() {
    val file = File("/home/data/file.txt")
    try {
        BufferedReader(FileReader(file)).use { br ->
            var line: String?
            while (br.readLine().also { line = it } != null) {
                println(line)
            }
        }
    } catch (e: IOException) {
        e.printStackTrace()
    }
}