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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
#if FOUNDATION_FRAMEWORK
internal import _ForSwiftFoundation
#endif
#if canImport(Darwin)
import Darwin
#elseif canImport(Bionic)
@preconcurrency import Bionic
#elseif canImport(Glibc)
@preconcurrency import Glibc
#elseif canImport(Musl)
@preconcurrency import Musl
#elseif os(Windows)
import CRT
import WinSDK
#elseif os(WASI)
@preconcurrency import WASILibc
#endif
// MARK: - Error Creation with CocoaError.Code
extension CocoaError {
static func errorWithFilePath(_ code: CocoaError.Code, _ path: String, variant: String? = nil, source: String? = nil, destination: String? = nil) -> CocoaError {
CocoaError(code, path: path, variant: variant, source: source, destination: destination)
}
static func errorWithFilePath(_ code: CocoaError.Code, _ url: URL, variant: String? = nil, source: String? = nil, destination: String? = nil) -> CocoaError {
CocoaError(code, url: url, variant: variant, source: source, destination: destination)
}
}
// MARK: - POSIX Errors
extension CocoaError.Code {
fileprivate init(fileErrno: Int32, reading: Bool) {
self = if reading {
switch fileErrno {
case EFBIG: .fileReadTooLarge
case ENOENT: .fileReadNoSuchFile
case EPERM, EACCES: .fileReadNoPermission
case ENAMETOOLONG: .fileReadInvalidFileName
default: .fileReadUnknown
}
} else {
switch fileErrno {
case ENOENT: .fileNoSuchFile
case EPERM, EACCES: .fileWriteNoPermission
case ENAMETOOLONG: .fileWriteInvalidFileName
#if !os(Windows)
case EDQUOT: .fileWriteOutOfSpace
#endif
case ENOSPC: .fileWriteOutOfSpace
case EROFS: .fileWriteVolumeReadOnly
case EEXIST: .fileWriteFileExists
default: .fileWriteUnknown
}
}
}
}
extension POSIXError {
fileprivate init?(errno: Int32) {
// (130280235) POSIXError.Code does not have a case for EOPNOTSUPP
guard errno != EOPNOTSUPP else { return nil }
guard let code = POSIXError.Code(rawValue: errno) else {
fatalError("Invalid posix errno \(errno)")
}
self.init(code)
}
}
extension CocoaError {
static func errorWithFilePath(_ pathOrURL: PathOrURL, errno: Int32, reading: Bool, variant: String? = nil, source: String? = nil, destination: String? = nil) -> CocoaError {
switch pathOrURL {
case .path(let path):
return Self.errorWithFilePath(path, errno: errno, reading: reading, variant: variant, source: source, destination: destination)
case .url(let url):
return Self.errorWithFilePath(url, errno: errno, reading: reading, variant: variant, source: source, destination: destination)
}
}
static func errorWithFilePath(_ path: String, errno: Int32, reading: Bool, variant: String? = nil, source: String? = nil, destination: String? = nil) -> CocoaError {
CocoaError(Code(fileErrno: errno, reading: reading), path: path, underlying: POSIXError(errno: errno), variant: variant, source: source, destination: destination)
}
static func errorWithFilePath(_ url: URL, errno: Int32, reading: Bool, variant: String? = nil, source: String? = nil, destination: String? = nil) -> CocoaError {
CocoaError(Code(fileErrno: errno, reading: reading), url: url, underlying: POSIXError(errno: errno), variant: variant, source: source, destination: destination)
}
}
// MARK: - Windows Errors
#if os(Windows)
extension CocoaError.Code {
fileprivate init(win32: DWORD, reading: Bool, emptyPath: Bool? = nil) {
self = switch (reading, win32) {
case (true, ERROR_FILE_NOT_FOUND), (true, ERROR_PATH_NOT_FOUND):
// Windows will return ERROR_FILE_NOT_FOUND or ERROR_PATH_NOT_FOUND
// for empty paths.
(emptyPath ?? false) ? .fileReadInvalidFileName : .fileReadNoSuchFile
case (true, ERROR_ACCESS_DENIED): .fileReadNoPermission
case (true, ERROR_INVALID_ACCESS): .fileReadNoPermission
case (true, ERROR_INVALID_DRIVE): .fileReadNoSuchFile
case (true, ERROR_SHARING_VIOLATION): .fileReadNoPermission
case (true, ERROR_INVALID_NAME): .fileReadInvalidFileName
case (true, ERROR_LABEL_TOO_LONG): .fileReadInvalidFileName
case (true, ERROR_BAD_PATHNAME): .fileReadInvalidFileName
case (true, ERROR_FILENAME_EXCED_RANGE): .fileReadInvalidFileName
case (true, ERROR_DIRECTORY): .fileReadInvalidFileName
case (true, _): .fileReadUnknown
case (false, ERROR_FILE_NOT_FOUND), (false, ERROR_PATH_NOT_FOUND):
// Windows will return ERROR_FILE_NOT_FOUND or ERROR_PATH_NOT_FOUND
// for empty paths.
(emptyPath ?? false) ? .fileWriteInvalidFileName : .fileNoSuchFile
case (false, ERROR_ACCESS_DENIED): .fileWriteNoPermission
case (false, ERROR_INVALID_ACCESS): .fileWriteNoPermission
case (false, ERROR_INVALID_DRIVE): .fileNoSuchFile
case (false, ERROR_WRITE_FAULT): .fileWriteVolumeReadOnly
case (false, ERROR_SHARING_VIOLATION): .fileWriteNoPermission
case (false, ERROR_FILE_EXISTS): .fileWriteFileExists
case (false, ERROR_DISK_FULL): .fileWriteOutOfSpace
case (false, ERROR_INVALID_NAME): .fileWriteInvalidFileName
case (false, ERROR_LABEL_TOO_LONG): .fileWriteInvalidFileName
case (false, ERROR_BAD_PATHNAME): .fileWriteInvalidFileName
case (false, ERROR_ALREADY_EXISTS): .fileWriteFileExists
case (false, ERROR_FILENAME_EXCED_RANGE): .fileWriteInvalidFileName
case (false, ERROR_DIRECTORY): .fileWriteInvalidFileName
case (false, ERROR_DISK_RESOURCES_EXHAUSTED): .fileWriteOutOfSpace
case (false, _): .fileWriteUnknown
}
}
}
extension CocoaError {
static func errorWithFilePath(_ path: PathOrURL, win32 dwError: DWORD, reading: Bool) -> CocoaError {
switch path {
case let .path(path):
return CocoaError(.init(win32: dwError, reading: reading, emptyPath: path.isEmpty), path: path, underlying: Win32Error(dwError))
case let .url(url):
let pathStr = url.withUnsafeFileSystemRepresentation { String(cString: $0!) }
return CocoaError(.init(win32: dwError, reading: reading, emptyPath: pathStr.isEmpty), path: pathStr, url: url, underlying: Win32Error(dwError))
}
}
static func errorWithFilePath(_ path: String? = nil, win32 dwError: DWORD, reading: Bool, variant: String? = nil, source: String? = nil, destination: String? = nil) -> CocoaError {
return CocoaError(.init(win32: dwError, reading: reading, emptyPath: path?.isEmpty), path: path, underlying: Win32Error(dwError), source: source, destination: destination)
}
}
#endif
// MARK: - OSStatus Errors
extension CocoaError {
static func errorWithFilePath(_ path: String? = nil, osStatus: Int, reading: Bool, variant: String? = nil) -> CocoaError {
// Do more or less what _NSErrorWithFilePathAndErrno() does, except for OSStatus values
let errorCode: CocoaError.Code = switch (reading, osStatus) {
case (true, -43 /*fnfErr*/), (true, -120 /*dirNFErr*/): .fileReadNoSuchFile
case (true, -5000 /*afpAccessDenied*/): .fileReadNoPermission
case (true, _): .fileReadUnknown
case (false, -34 /*dskFulErr*/), (false, -1425 /*errFSQuotaExceeded*/): .fileWriteOutOfSpace
case (false, -45 /*fLckdErr*/), (false, -5000 /*afpAccessDenied*/): .fileWriteNoPermission
case (false, _): .fileWriteUnknown
}
#if FOUNDATION_FRAMEWORK
return CocoaError(errorCode, path: path, underlying: NSError(domain: NSOSStatusErrorDomain, code: osStatus), variant: variant)
#else
return CocoaError(errorCode, path: path, variant: variant)
#endif
}
}
// MARK: - Error creation funnel points
extension CocoaError {
fileprivate init(
_ code: CocoaError.Code,
path: String? = nil,
underlying: (some Error)? = Optional<CocoaError>.none,
variant: String? = nil,
source: String? = nil,
destination: String? = nil
) {
self.init(
code,
path: path,
url: path.flatMap(URL.init(_fileManagerFailableFileURLWithPath:)),
underlying: underlying,
variant: variant,
source: source,
destination: destination
)
}
fileprivate init(
_ code: CocoaError.Code,
url: URL,
underlying: (some Error)? = Optional<CocoaError>.none,
variant: String? = nil,
source: String? = nil,
destination: String? = nil
) {
self.init(
code,
path: url.path,
url: url,
underlying: underlying,
variant: variant,
source: source,
destination: destination
)
}
fileprivate init(
_ code: CocoaError.Code,
path: String?,
url: URL?,
underlying: (some Error)? = Optional<CocoaError>.none,
variant: String? = nil,
source: String? = nil,
destination: String? = nil
) {
#if FOUNDATION_FRAMEWORK
self.init(_uncheckedNSError: NSError._cocoaError(withCode: code.rawValue, path: path, url: url, underlying: underlying, variant: variant, source: source, destination: destination) as NSError)
#else
var userInfo: [String : Any] = [:]
if let path {
userInfo[NSFilePathErrorKey] = path
}
if let url {
userInfo[NSURLErrorKey] = url
}
if let underlying {
userInfo[NSUnderlyingErrorKey] = underlying
}
if let source {
userInfo[NSSourceFilePathErrorKey] = source
}
if let destination {
userInfo[NSDestinationFilePathErrorKey] = destination
}
if let variant {
userInfo[NSUserStringVariantErrorKey] = [variant]
}
self.init(code, userInfo: userInfo)
#endif
}
}
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