| 1 | use std::error::Error; |
| 2 | use std::fmt; |
|---|
| 3 | |
|---|
| 4 | /// The error type returned on unsupported platforms. |
|---|
| 5 | /// |
|---|
| 6 | /// On unsupported platforms, all operations will fail with an `io::Error` with |
|---|
| 7 | /// a kind `io::ErrorKind::Unsupported` and an `UnsupportedPlatformError` error as the inner error. |
|---|
| 8 | /// While you *could* check the inner error, it's probably simpler just to check |
|---|
| 9 | /// `xattr::SUPPORTED_PLATFORM`. |
|---|
| 10 | /// |
|---|
| 11 | /// This error mostly exists for pretty error messages. |
|---|
| 12 | #[derive (Copy, Clone, Debug)] |
|---|
| 13 | pub struct UnsupportedPlatformError; |
|---|
| 14 | |
|---|
| 15 | impl Error for UnsupportedPlatformError { |
|---|
| 16 | fn description(&self) -> &str { |
|---|
| 17 | "unsupported platform" |
|---|
| 18 | } |
|---|
| 19 | } |
|---|
| 20 | |
|---|
| 21 | impl fmt::Display for UnsupportedPlatformError { |
|---|
| 22 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
|---|
| 23 | write!( |
|---|
| 24 | f, |
|---|
| 25 | "unsupported platform, please file a bug at `https://github.com/Stebalien/xattr'" |
|---|
| 26 | ) |
|---|
| 27 | } |
|---|
| 28 | } |
|---|
| 29 | |
|---|
