scala.meta.io.RelativePath.scala Maven / Gradle / Ivy

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Scalameta APIs for input/output

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package scala.meta.io

import java.io._
import java.net._
import java.nio.file.Path
import java.nio.{file => nio}
import java.nio.file.Paths
import scala.meta.internal.io.PathIO
import scala.collection.JavaConverters._

/** Wrapper around a relative nio.Path. */
sealed abstract case class RelativePath(toNIO: Path) {
  require(!toNIO.isAbsolute, s"$toNIO is not relative!")
  def toFile: File = toNIO.toFile
  def toURI(isDirectory: Boolean): URI = {
    val suffix = if (isDirectory) "/" else ""
    // Can't use toNIO.toUri because it produces an absolute URI.
    val names = toNIO.iterator().asScala
    val uris = names.map { name =>
      // URI encode each part of the path individually.
      new URI(null, null, name.toString, null)
    }
    URI.create(uris.mkString("", "/", suffix))
  }

  def syntax: String = toString
  def structure: String = s"""RelativePath("$syntax")"""
  override def toString: String = toNIO.toString

  def toAbsolute: AbsolutePath = PathIO.workingDirectory.resolve(this)
  def toAbsolute(root: AbsolutePath): AbsolutePath = root.resolve(this)

  def relativize(other: RelativePath): RelativePath = RelativePath(toNIO.relativize(other.toNIO))

  def resolve(other: nio.Path): RelativePath = RelativePath(toNIO.resolve(other))
  def resolve(other: RelativePath): RelativePath = resolve(other.toNIO)
  def resolve(path: String): RelativePath = resolve(Paths.get(path))
  def resolveSibling(f: String => String): RelativePath =
    RelativePath(toNIO.resolveSibling(f(toNIO.getFileName.toString)))
}

object RelativePath {
  def apply(file: File): RelativePath = apply(file.getPath)
  def apply(path: String): RelativePath = apply(Paths.get(path))

  // throws Illegal argument exception if path is not relative.
  def apply(path: nio.Path): RelativePath =
    new RelativePath(path) {}
}