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FileAttributes.scala
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FileAttributes.scala
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/*
* Copyright (c) 2013 Functional Streams for Scala
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package fs2
package io
package file
import scala.concurrent.duration.FiniteDuration
/** Attributes of a file that are provided by most operating systems and file systems.
*
* To get an instance of `BasicFileAttributes`, use `Files[F].getBasicFileAttributes(path)`.
*
* The `fileKey` operation returns a unique identifier for the file, if the operating system
* and file system supports providing such an identifier.
*/
sealed trait BasicFileAttributes {
def creationTime: FiniteDuration
def fileKey: Option[FileKey]
def isDirectory: Boolean
def isOther: Boolean
def isRegularFile: Boolean
def isSymbolicLink: Boolean
def lastAccessTime: FiniteDuration
def lastModifiedTime: FiniteDuration
def size: Long
override def equals(that: Any): Boolean = that match {
case other: BasicFileAttributes =>
creationTime == other.creationTime &&
fileKey == other.fileKey &&
isDirectory == other.isDirectory &&
isOther == other.isOther &&
isRegularFile == other.isRegularFile &&
isSymbolicLink == other.isSymbolicLink &&
lastAccessTime == other.lastAccessTime &&
lastModifiedTime == other.lastModifiedTime &&
size == other.size
case _ => false
}
override def hashCode: Int = {
import util.hashing.MurmurHash3.{stringHash, mix, finalizeHash}
val h = stringHash("FileAttributes")
mix(h, creationTime.##)
mix(h, fileKey.##)
mix(h, isDirectory.##)
mix(h, isOther.##)
mix(h, isRegularFile.##)
mix(h, isSymbolicLink.##)
mix(h, lastAccessTime.##)
mix(h, lastModifiedTime.##)
mix(h, size.##)
finalizeHash(h, 9)
}
override def toString: String =
s"BasicFileAttributes($creationTime, $fileKey, $isDirectory, $isOther, $isRegularFile, $isSymbolicLink, $lastAccessTime, $lastModifiedTime, $size)"
}
object BasicFileAttributes {
private[file] trait UnsealedBasicFileAttributes extends BasicFileAttributes
}
// Note: we do not expose owner & group here since node.js doesn't provide easy
// access to owner/group names, only uid/gid. We could have alternatively read the
// `unix:uid` and `unix:gid` attributes and supplemented the result here, or made
// the owner/group operations JVM only.
sealed trait PosixFileAttributes extends BasicFileAttributes {
def permissions: PosixPermissions
final override def equals(that: Any): Boolean = that match {
case other: PosixFileAttributes => super.equals(other) && permissions == other.permissions
case _ => false
}
final override def hashCode: Int = {
import util.hashing.MurmurHash3.{stringHash, mix, finalizeHash}
val h = stringHash("PosixFileAttributes")
mix(h, super.hashCode)
mix(h, permissions.##)
finalizeHash(h, 2)
}
final override def toString: String =
s"PosixFileAttributes($creationTime, $fileKey, $isDirectory, $isOther, $isRegularFile, $isSymbolicLink, $lastAccessTime, $lastModifiedTime, $size, $permissions)"
}
object PosixFileAttributes {
private[file] trait UnsealedPosixFileAttributes extends PosixFileAttributes
}