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p

fs2.io

file

package file

Provides support for working with files.

Source
file.scala
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Type Members

  1. type AccessDeniedException = java.nio.file.AccessDeniedException
  2. sealed trait BasicFileAttributes extends AnyRef

    Attributes of a file that are provided by most operating systems and file systems.

    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.

  3. final class CopyFlag extends AnyVal
  4. case class CopyFlags(value: List[CopyFlag]) extends Product with Serializable
  5. type DirectoryNotEmptyException = java.nio.file.DirectoryNotEmptyException
  6. type FileAlreadyExistsException = java.nio.file.FileAlreadyExistsException
  7. trait FileHandle[F[_]] extends FileHandlePlatform[F]

    Provides the ability to read/write/lock/inspect a file in the effect F.

  8. trait FileKey extends AnyRef

    An opaque, unique identifier for a file.

    An opaque, unique identifier for a file.

    Paths which have the same FileKey (via univerals equals), as reported by Files[F].getBasicFileAttributes(path).fileKey, are guaranteed to reference the same file on the file system.

    Note: not all operating systems and file systems support file keys, hence BasicFileAttributes#fileKey returns an Option[FileKey].

  9. type FileSystemException = java.nio.file.FileSystemException
  10. type FileSystemLoopException = java.nio.file.FileSystemLoopException
  11. sealed trait Files[F[_]] extends FilesPlatform[F]

    Provides operations related to working with files in the effect F.

    Provides operations related to working with files in the effect F.

    An instance is available for any effect F which has an Async[F] instance.

    The operations on this trait are implemented for both the JVM and Node.js. Some operations only work on POSIX file systems, though such methods generally have "Posix" in their names (e.g. getPosixPermissions). A small number of methods are only available on the JVM (e.g. variant of list which takes a glob pattern) and are indicated as such in their ScalaDoc.

  12. final class Flag extends AnyVal
  13. case class Flags(value: List[Flag]) extends Product with Serializable

    Flags describing how a file should be opened by Files[F].open(path, flags).

    Flags describing how a file should be opened by Files[F].open(path, flags).

    Common flag combinations are available in the companion (e.g. Flags.Write) Custom combinations are supported via the apply method (e.g., Flags(Flag.Write, Flag.CreateNew)).

  14. type NoSuchFileException = java.nio.file.NoSuchFileException
  15. type NotDirectoryException = java.nio.file.NotDirectoryException
  16. final class Path extends PathApi

    Path to a file or directory on a file system.

    Path to a file or directory on a file system.

    The path API is inspired by the java.nio.file.Path API. On the JVM, a NIO path can be converted to an FS2 path via Path.fromNioPath(p) and likewise an FS2 path can be converted to a NIO path via p.toNioPath.

    (When using this class on Node.js, the fromNioPath and toNioPath methods are not accessible.)

    Generally, most methods have the same behavior as their NIO counterparts, though there are some slight differences -- e.g., resolve normalizes.

  17. sealed trait Permissions extends PermissionsPlatform

    Describes the permissions of a file / directory.

    Describes the permissions of a file / directory.

    Note: currently, there is only one subtype -- PosixPermissions. More types may be added in the future (e.g. Windows ACLs).

  18. sealed trait PosixFileAttributes extends BasicFileAttributes
  19. sealed trait PosixPermission extends AnyRef
  20. final class PosixPermissions extends Permissions

    Describes POSIX file permissions, where the user, group, and others are each assigned read, write, and/or execute permissions.

    Describes POSIX file permissions, where the user, group, and others are each assigned read, write, and/or execute permissions.

    The toString method provides a 9 character string where the first three characters indicate user permissions, the next three group permissions, and the final three others permissions. For example, rwxr-xr-- indicates the owner has read, write and execute, the group as read and execute, and others have read.

    The value field encodes the permissions in the lowest 9 bits of an integer. bits 8-6 indicate read, write, and execute for the owner, 5-3 for the group, and 2-0 for others. rwxr-xr-- has the integer value 111101100 = 492.

    The toOctalString method returns the a 3 digit string, where the first character indicates read, write and execute for the owner, the second digit for the group, and the third digit for others. rwxr-xr-- has the octal string 754.

    Constructors from strings, octal strings, and integers, as well as explicitly enumerating permissions, are provided in the companion.

  21. final case class ReadCursor[F[_]](file: FileHandle[F], offset: Long) extends Product with Serializable

    Associates a FileHandle with an offset in to the file.

    Associates a FileHandle with an offset in to the file.

    This encapsulates the pattern of incrementally reading bytes in from a file, a chunk at a time. Convenience methods are provided for working with pulls.

  22. sealed abstract class Watcher[F[_]] extends AnyRef

    Allows watching the file system for changes to directories and files by using the platform's WatchService.

  23. final case class WriteCursor[F[_]](file: FileHandle[F], offset: Long) extends Product with Serializable

    Associates a FileHandle with an offset in to the file.

    Associates a FileHandle with an offset in to the file.

    This encapsulates the pattern of incrementally writing bytes in to a file, a chunk at a time. Convenience methods are provided for working with pulls.

Value Members

  1. object BasicFileAttributes
  2. object CopyFlag extends CopyFlagCompanionApi
  3. object CopyFlags extends CopyFlagsCompanionPlatform with Serializable
  4. object FileHandle extends FileHandleCompanionPlatform
  5. object FileKey
  6. object Files extends FilesCompanionPlatform
  7. object Flag extends FlagCompanionApi
  8. object Flags extends FlagsCompanionPlatform with Serializable
  9. object Path extends PathCompanionApi
  10. object PosixFileAttributes
  11. object PosixPermission
  12. object PosixPermissions
  13. object ReadCursor extends ReadCursorCompanionPlatform with Serializable
  14. object Watcher
  15. object WriteCursor extends WriteCursorCompanionPlatform with Serializable

Deprecated Value Members

  1. def copy[F[_]](source: java.nio.file.Path, target: java.nio.file.Path, flags: Seq[CopyOption] = Seq.empty)(implicit arg0: Async[F]): F[java.nio.file.Path]

    Copies a file from the source to the target path,

    Copies a file from the source to the target path,

    By default, the copy fails if the target file already exists or is a symbolic link.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].copy

  2. def createDirectories[F[_]](path: java.nio.file.Path, flags: Seq[FileAttribute[_]] = Seq.empty)(implicit arg0: Async[F]): F[java.nio.file.Path]

    Creates a new directory at the given path and creates all nonexistent parent directories beforehand.

    Creates a new directory at the given path and creates all nonexistent parent directories beforehand.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].createDirectories

  3. def createDirectory[F[_]](path: java.nio.file.Path, flags: Seq[FileAttribute[_]] = Seq.empty)(implicit arg0: Async[F]): F[java.nio.file.Path]

    Creates a new directory at the given path

    Creates a new directory at the given path

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].createDirectory

  4. def delete[F[_]](path: java.nio.file.Path)(implicit arg0: Async[F]): F[Unit]

    Deletes a file.

    Deletes a file.

    If the file is a directory then the directory must be empty for this action to succeed. This action will fail if the path doesn't exist.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].delete

  5. def deleteDirectoryRecursively[F[_]](path: java.nio.file.Path, options: Set[FileVisitOption] = Set.empty)(implicit arg0: Async[F]): F[Unit]

    Recursively delete a directory

    Recursively delete a directory

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].deleteDirectoryRecursively

  6. def deleteIfExists[F[_]](path: java.nio.file.Path)(implicit arg0: Async[F]): F[Boolean]

    Like delete, but will not fail when the path doesn't exist.

    Like delete, but will not fail when the path doesn't exist.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].deleteIfExists

  7. def directoryStream[F[_]](path: java.nio.file.Path, glob: String)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream of Paths inside a directory which match the given glob.

    Creates a stream of Paths inside a directory which match the given glob.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].directoryStream

  8. def directoryStream[F[_]](path: java.nio.file.Path, filter: (java.nio.file.Path) => Boolean)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream of Paths inside a directory, filtering the results by the given predicate.

    Creates a stream of Paths inside a directory, filtering the results by the given predicate.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].directoryStream

  9. def directoryStream[F[_]](path: java.nio.file.Path)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream of Paths inside a directory.

    Creates a stream of Paths inside a directory.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].directoryStream

  10. def exists[F[_]](path: java.nio.file.Path, flags: Seq[LinkOption] = Seq.empty)(implicit arg0: Async[F]): F[Boolean]

    Checks if a file exists

    Checks if a file exists

    Note that the result of this method is immediately outdated. If this method indicates the file exists then there is no guarantee that a subsequence access will succeed. Care should be taken when using this method in security sensitive applications.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].exists

  11. def move[F[_]](source: java.nio.file.Path, target: java.nio.file.Path, flags: Seq[CopyOption] = Seq.empty)(implicit arg0: Async[F]): F[java.nio.file.Path]

    Moves (or renames) a file from the source to the target path.

    Moves (or renames) a file from the source to the target path.

    By default, the move fails if the target file already exists or is a symbolic link.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].move

  12. def permissions[F[_]](path: java.nio.file.Path, flags: Seq[LinkOption] = Seq.empty)(implicit arg0: Async[F]): F[Set[PosixFilePermission]]

    Get file permissions as set of PosixFilePermission.

    Get file permissions as set of PosixFilePermission.

    This will only work for POSIX supporting file systems

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].permissions

  13. def readAll[F[_]](path: java.nio.file.Path, chunkSize: Int)(implicit arg0: Async[F]): Stream[F, Byte]
    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].readAll

  14. def readRange[F[_]](path: java.nio.file.Path, chunkSize: Int, start: Long, end: Long)(implicit arg0: Async[F]): Stream[F, Byte]

    Reads a range of data synchronously from the file at the specified java.nio.file.Path.

    Reads a range of data synchronously from the file at the specified java.nio.file.Path. start is inclusive, end is exclusive, so when start is 0 and end is 2, two bytes are read.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].readRange

  15. def setPermissions[F[_]](path: java.nio.file.Path, permissions: Set[PosixFilePermission])(implicit arg0: Async[F]): F[java.nio.file.Path]

    Set file permissions from set of PosixFilePermission.

    Set file permissions from set of PosixFilePermission.

    This will only work for POSIX supporting file systems

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].setPermissions

  16. def size[F[_]](path: java.nio.file.Path)(implicit arg0: Async[F]): F[Long]

    Returns the size of a file (in bytes).

    Returns the size of a file (in bytes).

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].size

  17. def tail[F[_]](path: java.nio.file.Path, chunkSize: Int, offset: Long = 0L, pollDelay: FiniteDuration = 1.second)(implicit arg0: Async[F]): Stream[F, Byte]

    Returns an infinite stream of data from the file at the specified path.

    Returns an infinite stream of data from the file at the specified path. Starts reading from the specified offset and upon reaching the end of the file, polls every pollDuration for additional updates to the file.

    Read operations are limited to emitting chunks of the specified chunk size but smaller chunks may occur.

    If an error occurs while reading from the file, the overall stream fails.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].tail

  18. def tempDirectoryResource[F[_]](dir: java.nio.file.Path, prefix: String = "", attributes: Seq[FileAttribute[_]] = Seq.empty)(implicit arg0: Async[F]): Resource[F, java.nio.file.Path]

    Creates a resource containing the path of a temporary directory.

    Creates a resource containing the path of a temporary directory.

    The temporary directory is removed during the resource release.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].tempDirectory

  19. def tempDirectoryStream[F[_]](dir: java.nio.file.Path, prefix: String = "", attributes: Seq[FileAttribute[_]] = Seq.empty)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream containing the path of a temporary directory.

    Creates a stream containing the path of a temporary directory.

    The temporary directory is removed when the stream completes.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Stream.resource(Files[F].tempDirectory(..))

  20. def tempFileResource[F[_]](dir: java.nio.file.Path, prefix: String = "", suffix: String = ".tmp", attributes: Seq[FileAttribute[_]] = Seq.empty)(implicit arg0: Async[F]): Resource[F, java.nio.file.Path]

    Creates a resource containing the path of a temporary file.

    Creates a resource containing the path of a temporary file.

    The temporary file is removed during the resource release.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].tempFile

  21. def tempFileStream[F[_]](dir: java.nio.file.Path, prefix: String = "", suffix: String = ".tmp", attributes: Seq[FileAttribute[_]] = Seq.empty)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream containing the path of a temporary file.

    Creates a stream containing the path of a temporary file.

    The temporary file is removed when the stream completes.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Stream.resource(Files[F].tempFile(..))

  22. def walk[F[_]](start: java.nio.file.Path, maxDepth: Int, options: Seq[FileVisitOption] = Seq.empty)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream of Paths contained in a given file tree down to a given depth.

    Creates a stream of Paths contained in a given file tree down to a given depth.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].walk

  23. def walk[F[_]](start: java.nio.file.Path, options: Seq[FileVisitOption])(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream of Paths contained in a given file tree, respecting the supplied options.

    Creates a stream of Paths contained in a given file tree, respecting the supplied options. Depth is unlimited.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].walk

  24. def walk[F[_]](start: java.nio.file.Path)(implicit arg0: Async[F]): Stream[F, java.nio.file.Path]

    Creates a stream of Paths contained in a given file tree.

    Creates a stream of Paths contained in a given file tree. Depth is unlimited.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].walk

  25. def watch[F[_]](path: java.nio.file.Path, types: Seq[EventType] = Nil, modifiers: Seq[Modifier] = Nil, pollTimeout: FiniteDuration = 1.second)(implicit F: Async[F]): Stream[F, Event]

    Watches a single path.

    Watches a single path.

    Alias for creating a watcher and watching the supplied path, releasing the watcher when the resulting stream is finalized.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].watch

  26. def watcher[F[_]](implicit F: Async[F]): Resource[F, io.Watcher[F]]

    Creates a Watcher for the default file system.

    Creates a Watcher for the default file system.

    The watcher is returned as a resource. To use the watcher, lift the resource to a stream, watch or register 1 or more paths, and then return watcher.events().

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].watcher

  27. def writeAll[F[_]](path: java.nio.file.Path, flags: Seq[StandardOpenOption] = List(StandardOpenOption.CREATE))(implicit arg0: Async[F]): Pipe[F, Byte, Nothing]

    Writes all data to the file at the specified java.nio.file.Path.

    Writes all data to the file at the specified java.nio.file.Path.

    Adds the WRITE flag to any other OpenOption flags specified. By default, also adds the CREATE flag.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].writeAll

  28. def writeRotate[F[_]](computePath: F[java.nio.file.Path], limit: Long, flags: Seq[StandardOpenOption] = List(StandardOpenOption.CREATE))(implicit F: Async[F]): Pipe[F, Byte, Nothing]

    Writes all data to a sequence of files, each limited in size to limit.

    Writes all data to a sequence of files, each limited in size to limit.

    The computePath operation is used to compute the path of the first file and every subsequent file. Typically, the next file should be determined by analyzing the current state of the filesystem -- e.g., by looking at all files in a directory and generating a unique name.

    Annotations
    @deprecated
    Deprecated

    (Since version 3.0.0) Use Files[F].writeRotate

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