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Translate between Windows Errors and Cocoa Errors #2325

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Jun 12, 2019
Merged

Translate between Windows Errors and Cocoa Errors #2325

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56 changes: 52 additions & 4 deletions Foundation/FoundationErrors.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -212,10 +212,58 @@ internal func _NSErrorWithErrno(_ posixErrno : Int32, reading : Bool, path : Str
internal let _NSWindowsErrorDomain = "org.swift.Foundation.WindowsError"

internal func _NSErrorWithWindowsError(_ windowsError: DWORD, reading: Bool) -> NSError {
// <#TODO#> os(Windows): Map Win32 errors to Cocoa errors as _NSErrorWithErrno() does.
let code: CocoaError.Code = reading ? .fileReadUnknown : .fileWriteUnknown
return NSError(domain: NSCocoaErrorDomain, code: code.rawValue, userInfo: [
NSUnderlyingErrorKey: NSError(domain: _NSWindowsErrorDomain, code: Int(windowsError))
var cocoaError : CocoaError.Code
switch Int32(bitPattern: windowsError) {
case ERROR_LOCK_VIOLATION: cocoaError = .fileLocking
case ERROR_NOT_LOCKED: cocoaError = .fileLocking
case ERROR_LOCK_FAILED: cocoaError = .fileLocking
case ERROR_INVALID_EXE_SIGNATURE: cocoaError = .executableNotLoadable
case ERROR_EXE_MARKED_INVALID: cocoaError = .executableNotLoadable
case ERROR_BAD_EXE_FORMAT: cocoaError = .executableNotLoadable
case ERROR_BAD_EXE_FORMAT: cocoaError = .executableNotLoadable
case ERROR_LOCKED: cocoaError = .fileLocking
default:
if reading {
switch Int32(bitPattern: windowsError) {
case ERROR_FILE_NOT_FOUND: cocoaError = .fileReadNoSuchFile
case ERROR_PATH_NOT_FOUND: cocoaError = .fileReadNoSuchFile
case ERROR_ACCESS_DENIED: cocoaError = .fileReadNoPermission
case ERROR_INVALID_ACCESS: cocoaError = .fileReadNoPermission
case ERROR_INVALID_DRIVE: cocoaError = .fileReadNoSuchFile
case ERROR_SHARING_VIOLATION: cocoaError = .fileReadNoPermission
case ERROR_INVALID_NAME: cocoaError = .fileReadInvalidFileName
case ERROR_LABEL_TOO_LONG: cocoaError = .fileReadInvalidFileName
case ERROR_BAD_PATHNAME: cocoaError = .fileReadInvalidFileName
case ERROR_FILENAME_EXCED_RANGE: cocoaError = .fileReadInvalidFileName
case ERROR_DIRECTORY: cocoaError = .fileReadInvalidFileName
default: cocoaError = .fileReadUnknown
}
} else {
switch Int32(bitPattern: windowsError) {
case ERROR_FILE_NOT_FOUND: cocoaError = .fileNoSuchFile
case ERROR_PATH_NOT_FOUND: cocoaError = .fileNoSuchFile
case ERROR_ACCESS_DENIED: cocoaError = .fileWriteNoPermission
case ERROR_INVALID_ACCESS: cocoaError = .fileWriteNoPermission
case ERROR_INVALID_DRIVE: cocoaError = .fileNoSuchFile
case ERROR_WRITE_PROTECT: cocoaError = .fileWriteVolumeReadOnly
case ERROR_WRITE_FAULT: cocoaError = .fileWriteNoPermission
case ERROR_SHARING_VIOLATION: cocoaError = .fileWriteNoPermission
case ERROR_FILE_EXISTS: cocoaError = .fileWriteFileExists
case ERROR_DISK_FULL: cocoaError = .fileWriteOutOfSpace
case ERROR_INVALID_NAME: cocoaError = .fileWriteInvalidFileName
case ERROR_LABEL_TOO_LONG: cocoaError = .fileWriteInvalidFileName
case ERROR_BAD_PATHNAME: cocoaError = .fileWriteInvalidFileName
case ERROR_ALREADY_EXISTS: cocoaError = .fileWriteFileExists
case ERROR_FILENAME_EXCED_RANGE: cocoaError = .fileWriteInvalidFileName
case ERROR_DIRECTORY: cocoaError = .fileWriteInvalidFileName
case ERROR_DISK_RESOURCES_EXHAUSTED: cocoaError = .fileWriteOutOfSpace
default: cocoaError = .fileWriteUnknown
}
}
}

return NSError(domain: NSCocoaErrorDomain, code: cocoaError.rawValue, userInfo: [
NSUnderlyingErrorKey: NSError(domain: _NSWindowsErrorDomain, code: Int(windowsError))
])
}
#endif