Camelize.kt

import okio.buffer
import okio.source

/**
 * Converts a Kotlin file with `backtick method names` to camelCaseMethodNames. 
 */
fun main() {
  val source = System.`in`.source().buffer()
  while (true) {
    val line = source.readUtf8Line() ?: break
    val prefix = "  fun `"
    val suffix = "`() {"
    if (!line.startsWith(prefix) || !line.endsWith(suffix)) {
      System.out.println(line)
      continue
    }
    val words = line.substring(prefix.length, line.length - suffix.length).split(" ")
    val camelWords = words[0] + (words.subList(1, words.size).joinToString(separator = "") { word ->
      word.substring(0, 1).toUpperCase() + word.substring(1)
    })
    System.out.println("  fun ${camelWords}() {")
  }
}