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• case-app_2.13.0-RC1
• 2.0.0-M7
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• PlatformArgsExpander.scala

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caseapp.core.parser.PlatformArgsExpander.scala Maven / Gradle / Ivy

package caseapp.core.parser

import java.nio.charset.StandardCharsets.UTF_8
import java.nio.file._
import scala.compat.Platform.EOL

object PlatformArgsExpander {

  def expand(args: List[String]): List[String] = {
    args.flatMap { arg =>
      if (arg.startsWith("@")) {
        val argPath = Paths.get(arg.substring(1))
        val argText = new String(Files.readAllBytes(argPath), UTF_8)
        argText.split(EOL).map(_.trim).filter(_.nonEmpty).toList
      } else {
        List(arg)
      }
    }
  }
}