A script that destroys Windows-1252 garbage - with garbage!

Ungarbage.kt

/*
 Ungarbage v0.1.0.1
 October 18th 2016, @espectalll

 To the extent possible under law, the author has dedicated all copyright and related and neighboring rights
 to this software to the public domain worldwide. This software is distributed without any warranty.
 You should have received a copy of the CC0 Public Domain Dedication along with this software. If not, see
 <http://creativecommons.org/publicdomain/zero/1.0/>.
 */

import java.io.File
import java.nio.charset.Charset
import java.nio.file.Files

fun findFiles(dir: File): MutableList<File> {
    var files: MutableList<File> = arrayListOf()
    for(child in dir.listFiles()) {
        var childPath = child.toString()
        when {
            child.isDirectory -> files.addAll(findFiles(child))
            childPath.endsWith(".html") || childPath.endsWith(".htm") -> files.add(child)
        }
    }
    return files
}

fun replaceBad(data: List<String>): List<String> {
    var data = data.toMutableList()
    var blacklist = mapOf('á' to "&#225;", 'é' to "&#233;", 'í' to "&#237;", 'ó' to "&#243;", 'ú' to "&#250;",
            'Á' to "&#193;", 'É' to "&#201;", 'Í' to "&#205;", 'Ó' to "&#211;", 'Ú' to "&#218;",
            'ñ' to "&#241;", 'Ñ' to "&#209;")
    for (i in 0..data.size - 1) {
        for (char in data[i]) {
            if (blacklist[char] != null) {
                data[i] = data[i].replace(char.toString(), blacklist[char].toString())
            }
        }
    }
    return data
}

fun main(args: Array<String>) {
    var files = findFiles(File("."))
    for (file in files) {
        var data = file.readLines(Charset.forName("windows-1252"))
        Files.write(file.toPath(), replaceBad(data), Charsets.UTF_8)
    }
}