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use core::fmt;
pub type Result<T> = core::result::Result<T, Error>;
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
#[non_exhaustive]
pub enum Error {
Decode,
Encode,
#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
Io,
#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
FileNotFound,
#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
PermissionDenied,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::Decode => f.write_str("PKCS#8 decoding error"),
Error::Encode => f.write_str("PKCS#8 encoding error"),
#[cfg(feature = "std")]
Error::Io => f.write_str("I/O error"),
#[cfg(feature = "std")]
Error::FileNotFound => f.write_str("file not found"),
#[cfg(feature = "std")]
Error::PermissionDenied => f.write_str("permission denied"),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for Error {}
impl From<const_oid::Error> for Error {
fn from(_: const_oid::Error) -> Error {
Error::Decode
}
}
#[cfg(feature = "std")]
impl From<std::io::Error> for Error {
fn from(err: std::io::Error) -> Error {
match err.kind() {
std::io::ErrorKind::NotFound => Error::FileNotFound,
std::io::ErrorKind::PermissionDenied => Error::PermissionDenied,
_ => Error::Io,
}
}
}