1 files changed, 107 insertions, 0 deletions
diff --git a/vendor/pem-rfc7468/src/error.rs b/vendor/pem-rfc7468/src/error.rs
new file mode 100644
index 0000000..6a93465
--- /dev/null
+++ b/vendor/pem-rfc7468/src/error.rs
@@ -0,0 +1,107 @@
+//! Error types
+
+use core::fmt;
+
+/// Result type with the `pem-rfc7468` crate's [`Error`] type.
+pub type Result<T> = core::result::Result<T, Error>;
+
+/// PEM errors.
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[non_exhaustive]
+pub enum Error {
+    /// Base64-related errors.
+    Base64(base64ct::Error),
+
+    /// Character encoding-related errors.
+    CharacterEncoding,
+
+    /// Errors in the encapsulated text (which aren't specifically Base64-related).
+    EncapsulatedText,
+
+    /// Header detected in the encapsulated text.
+    HeaderDisallowed,
+
+    /// Invalid label.
+    Label,
+
+    /// Invalid length.
+    Length,
+
+    /// "Preamble" (text before pre-encapsulation boundary) contains invalid data.
+    Preamble,
+
+    /// Errors in the pre-encapsulation boundary.
+    PreEncapsulationBoundary,
+
+    /// Errors in the post-encapsulation boundary.
+    PostEncapsulationBoundary,
+
+    /// Unexpected PEM type label.
+    UnexpectedTypeLabel {
+        /// Type label that was expected.
+        expected: &'static str,
+    },
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Error::Base64(err) => write!(f, "PEM Base64 error: {}", err),
+            Error::CharacterEncoding => f.write_str("PEM character encoding error"),
+            Error::EncapsulatedText => f.write_str("PEM error in encapsulated text"),
+            Error::HeaderDisallowed => f.write_str("PEM headers disallowed by RFC7468"),
+            Error::Label => f.write_str("PEM type label invalid"),
+            Error::Length => f.write_str("PEM length invalid"),
+            Error::Preamble => f.write_str("PEM preamble contains invalid data (NUL byte)"),
+            Error::PreEncapsulationBoundary => {
+                f.write_str("PEM error in pre-encapsulation boundary")
+            }
+            Error::PostEncapsulationBoundary => {
+                f.write_str("PEM error in post-encapsulation boundary")
+            }
+            Error::UnexpectedTypeLabel { expected } => {
+                write!(f, "unexpected PEM type label: expecting \"{}\"", expected)
+            }
+        }
+    }
+}
+
+#[cfg(feature = "std")]
+impl std::error::Error for Error {}
+
+impl From<base64ct::Error> for Error {
+    fn from(err: base64ct::Error) -> Error {
+        Error::Base64(err)
+    }
+}
+
+impl From<base64ct::InvalidLengthError> for Error {
+    fn from(_: base64ct::InvalidLengthError) -> Error {
+        Error::Length
+    }
+}
+
+impl From<core::str::Utf8Error> for Error {
+    fn from(_: core::str::Utf8Error) -> Error {
+        Error::CharacterEncoding
+    }
+}
+
+#[cfg(feature = "std")]
+impl From<Error> for std::io::Error {
+    fn from(err: Error) -> std::io::Error {
+        let kind = match err {
+            Error::Base64(err) => return err.into(), // Use existing conversion
+            Error::CharacterEncoding
+            | Error::EncapsulatedText
+            | Error::Label
+            | Error::Preamble
+            | Error::PreEncapsulationBoundary
+            | Error::PostEncapsulationBoundary => std::io::ErrorKind::InvalidData,
+            Error::Length => std::io::ErrorKind::UnexpectedEof,
+            _ => std::io::ErrorKind::Other,
+        };
+
+        std::io::Error::new(kind, err)
+    }
+}