struct to get information about a file using FileAttributeKey
import Foundation
struct FileAttributesManager {
// MARK: - Error Define
enum FileAttributesError: Error {
case typeCastingError
}
// MARK: - General
static private var fileManager: FileManager = .default
static private func loadAttributes(url: URL) throws -> [FileAttributeKey : Any] {
try fileManager.attributesOfItem(atPath: url.path)
}
}
// MARK: - Parameters
// [FileAttributeKey](https://developer.apple.com/documentation/foundation/fileattributekey)
// GitHub Copiliotで自動出力したメソッドもあるので、動かない物がある場合はご指摘ください
extension FileAttributesManager {
// ファイルが読み取り専用かどうかを示す値
// The key in a file attribute dictionary whose value indicates whether the file is read-only.
static func appendOnly(url: URL) throws -> Bool {
let attributes = try loadAttributes(url: url)
guard let appendOnly = attributes[.appendOnly] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return appendOnly.boolValue
}
// ファイルが使用中かどうかを示す値
// The key in a file attribute dictionary whose value indicates whether the file is busy.
static func busy(url: URL) throws -> Bool {
let attributes = try loadAttributes(url: url)
guard let busy = attributes[.busy] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return busy.boolValue
}
// ファイルの作成日時
// The key in a file attribute dictionary whose value indicates the file's creation date.
static func creationDate(url: URL) throws -> Date {
let attributes = try loadAttributes(url: url)
guard let creationDate = attributes[.creationDate] as? Date else {
throw FileAttributesError.typeCastingError
}
return creationDate
}
// ファイルが存在するデバイスの識別子
// The key in a file attribute dictionary whose value indicates the identifier for the device on which the file resides.
static func deviceIdentifier(url: URL) throws -> UInt {
let attributes = try loadAttributes(url: url)
guard let deviceIdentifier = attributes[.deviceIdentifier] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return deviceIdentifier.uintValue
}
// ファイルの拡張子が非表示かどうかを示す値
// The key in a file attribute dictionary whose value indicates whether the file’s extension is hidden.
static func extensionHidden(url: URL) throws -> Bool {
let attributes = try loadAttributes(url: url)
guard let extensionHidden = attributes[.extensionHidden] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return extensionHidden.boolValue
}
// ファイルのグループID
// The key in a file attribute dictionary whose value indicates the file’s group ID.
static func groupOwnerAccountID(url: URL) throws -> UInt {
let attributes = try loadAttributes(url: url)
guard let groupOwnerAccountID = attributes[.groupOwnerAccountID] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return groupOwnerAccountID.uintValue
}
// ファイルの所有者のグループ名
// The key in a file attribute dictionary whose value indicates the group name of the file’s owner.
static func groupOwnerAccountName(url: URL) throws -> String {
let attributes = try loadAttributes(url: url)
guard let groupOwnerAccountName = attributes[.groupOwnerAccountName] as? String else {
throw FileAttributesError.typeCastingError
}
return groupOwnerAccountName
}
// ファイルのHFSクリエイターコード
// The key in a file attribute dictionary whose value indicates the file’s HFS creator code.
static func hfsCreatorCode(url: URL) throws -> OSType {
let attributes = try loadAttributes(url: url)
guard let hfsCreatorCode = attributes[.hfsCreatorCode] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return hfsCreatorCode.uint32Value
}
// ファイルのHFSタイプコード
// The key in a file attribute dictionary whose value indicates the file’s HFS type code.
static func hfsTypeCode(url: URL) throws -> OSType {
let attributes = try loadAttributes(url: url)
guard let hfsTypeCode = attributes[.hfsTypeCode] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return hfsTypeCode.uint32Value
}
// ファイルが変更不可かどうかを示す値
// The key in a file attribute dictionary whose value indicates whether the file is mutable.
static func immutable(url: URL) throws -> Bool {
let attributes = try loadAttributes(url: url)
guard let immutable = attributes[.immutable] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return immutable.boolValue
}
// ファイルの最終更新日時
// The key in a file attribute dictionary whose value indicates the file’s last modified date.
static func modificationDate(url: URL) throws -> Date {
let attributes = try loadAttributes(url: url)
guard let modificationDate = attributes[.modificationDate] as? Date else {
throw FileAttributesError.typeCastingError
}
return modificationDate
}
// ファイルの所有者のアカウントID
// The key in a file attribute dictionary whose value indicates the file’s owner's account ID.
static func ownerAccountID(url: URL) throws -> UInt {
let attributes = try loadAttributes(url: url)
guard let ownerAccountID = attributes[.ownerAccountID] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return ownerAccountID.uintValue
}
// ファイルの所有者の名前
// The key in a file attribute dictionary whose value indicates the name of the file’s owner.
static func ownerAccountName(url: URL) throws -> String {
let attributes = try loadAttributes(url: url)
guard let ownerAccountName = attributes[.ownerAccountName] as? String else {
throw FileAttributesError.typeCastingError
}
return ownerAccountName
}
// ファイルのPosixパーミッション
// The key in a file attribute dictionary whose value indicates the file’s Posix permissions.
static func posixPermissions(url: URL) throws -> Int16 {
let attributes = try loadAttributes(url: url)
guard let posixPermissions = attributes[.posixPermissions] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return posixPermissions.int16Value
}
// ファイルの保護レベルを識別する値
// The key in a file attribute dictionary whose value identifies the protection level for this file.
static func protectionKey(url: URL) throws -> String {
let attributes = try loadAttributes(url: url)
guard let protectionKey = attributes[.protectionKey] as? String else {
throw FileAttributesError.typeCastingError
}
return protectionKey
}
// ファイルのリンク数
// The key in a file attribute dictionary whose value indicates the file’s reference count.
static func referenceCount(url: URL) throws -> UInt {
let attributes = try loadAttributes(url: url)
guard let referenceCount = attributes[.referenceCount] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return referenceCount.uintValue
}
// ファイルサイズのバイト数
// The key in a file attribute dictionary whose value indicates the file’s size in bytes.
static func size(url: URL) throws -> UInt64 {
let attributes = try loadAttributes(url: url)
guard let size = attributes[.size] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return size.uint64Value
}
// ファイルのファイルシステムファイル番号(inode番号)
// The key in a file attribute dictionary whose value indicates the file’s filesystem file number.
static func systemFileNumber(url: URL) throws -> UInt {
let attributes = try loadAttributes(url: url)
guard let systemFileNumber = attributes[.systemFileNumber] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return systemFileNumber.uintValue
}
// ファイルシステムの空きノード数
// The key in a file system attribute dictionary whose value indicates the number of free nodes in the file system.
static func systemFreeNodes(url: URL) throws -> UInt64 {
let attributes = try loadAttributes(url: url)
guard let systemFreeNodes = attributes[.systemFreeNodes] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return systemFreeNodes.uint64Value
}
// ファイルシステムの空き容量
// The key in a file system attribute dictionary whose value indicates the amount of free space on the file system.
static func systemFreeSize(url: URL) throws -> UInt64 {
let attributes = try loadAttributes(url: url)
guard let systemFreeSize = attributes[.systemFreeSize] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return systemFreeSize.uint64Value
}
// ファイルシステムのノード数
// The key in a file system attribute dictionary whose value indicates the number of nodes in the file system.
static func systemNodes(url: URL) throws -> UInt64 {
let attributes = try loadAttributes(url: url)
guard let systemNodes = attributes[.systemNodes] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return systemNodes.uint64Value
}
// ファイルシステムの番号(ファイルがあるデバイスのID)
// The key in a file system attribute dictionary whose value indicates the filesystem number of the file system.
static func systemNumber(url: URL) throws -> Int32 {
let attributes = try loadAttributes(url: url)
guard let systemNumber = attributes[.systemNumber] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return systemNumber.int32Value
}
// ファイルシステムのサイズ
// The key in a file system attribute dictionary whose value indicates the size of the file system.
static func systemSize(url: URL) throws -> UInt64 {
let attributes = try loadAttributes(url: url)
guard let systemSize = attributes[.systemSize] as? NSNumber else {
throw FileAttributesError.typeCastingError
}
return systemSize.uint64Value
}
// ファイルの種類
// The key in a file attribute dictionary whose value indicates the file’s type.
static func type(url: URL) throws -> String {
let attributes = try loadAttributes(url: url)
guard let type = attributes[.type] as? String else {
throw FileAttributesError.typeCastingError
}
return type
}
}
Post: FileAttributeKeyを使ってファイルの情報を取得する