* multiple simultaneous reads.)
 *
 * @param file a file in the directory to check. This file shouldn't already exist!
 */
internal fun FileSystem.isCivilized(file: Path): Boolean {
  sink(file).use {
    try {
      delete(file)
      return true
    } catch (_: IOException) {
    }
  }
  delete(file)
  return false
}

  fun connectionPreface() {
    this.withLock {
      if (closed) throw IOException("closed")
      if (!client) return // Nothing to write; servers don't send connection headers!
      if (logger.isLoggable(FINE)) {
        logger.fine(format(">> CONNECTION ${CONNECTION_PREFACE.hex()}"))
      }
      sink.write(CONNECTION_PREFACE)
      sink.flush()
    }
  }

  /** Applies `peerSettings` and then sends a settings ACK. */

      if (increment == 0L) throw IOException("windowSizeIncrement was 0")
    } catch (e: Exception) {
      logger.fine(frameLog(true, streamId, length, TYPE_WINDOW_UPDATE, flags))
      throw e
    }
    if (logger.isLoggable(FINE)) {
      logger.fine(
        frameLogWindowUpdate(
          inbound = true,
          streamId = streamId,
          length = length,

  }

  override fun appendingSink(
    file: Path,
    mustExist: Boolean,
  ): Sink = FaultySink(super.appendingSink(file, mustExist), file)

  override fun sink(
    file: Path,
    mustCreate: Boolean,
  ): Sink = FaultySink(super.sink(file, mustCreate), file)

  inner class FaultySink(sink: Sink, private val file: Path) : ForwardingSink(sink) {
    override fun write(
      source: Buffer,

                }
            }
    }

    /**
     * Zip a list of files with same root directory to a zip file.
     *
     * @param destZip the target zip file
     * @param srcFiles the mapping of relative path to the file
     */
    private
    fun zip(destZip: File, srcFiles: List<Pair<String, File>>) {
        if (srcFiles.isEmpty()) {
            return
        }
        destZip.parentFile.mkdirs()

        ).toFile()

    private
    fun File.withDirectory(path: String): File =
        resolve(path).apply {
            mkdirs()
        }

    private
    fun File.withSettings(text: String = ""): File =
        withFile("settings.gradle.kts", text)

    private
    fun File.withBuildScript(text: String = ""): File =
        withFile("build.gradle.kts", text)

// This file contains members that we should consider to pull upstream
// and make available to all Kotlin DSL users
package gradlebuild.basics.kotlindsl

import org.gradle.api.Project
import java.io.ByteArrayOutputStream
import java.io.File


/**
 * `dir / "sub"` is the same as `dir.resolve("sub")`.
 *
 * @see [File.resolve]
 */
operator fun File.div(child: String): File =
    resolve(child)

The main limitation is that to update or delete content of a file inside a ZIP file the entire ZIP file must be replaced.

 */

// To make it easier to access these functions from Groovy
@file:JvmName("Cleanup")

package gradlebuild.cleanup

import org.gradle.api.file.Directory
import org.gradle.api.file.FileSystemOperations
import org.gradle.api.logging.Logging
import org.gradle.api.specs.Spec
import org.gradle.kotlin.dsl.*
import org.gradle.util.GradleVersion
import java.io.File


private

//server/file  s:file h:server p:/file
\\\\server\\file  s:file h:server p:/file
/\\server/file  s:file h:server p:/file
file:///foo/bar.txt  s:file p:/foo/bar.txt
file:///home/me  s:file p:/home/me
//  s:file p:/
///  s:file p:/
///test  s:file p:/test
file://test  s:file h:test p:/
file://localhost  s:file h:localhost p:/
file://localhost/  s:file h:localhost p:/
file://localhost/test  s:file h:localhost p:/test