1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/base64ct/src/errors.rs b/vendor/base64ct/src/errors.rs
new file mode 100644
index 000000000..0ea417173
--- /dev/null
+++ b/vendor/base64ct/src/errors.rs
@@ -0,0 +1,86 @@
+//! Error types
+
+use core::fmt;
+
+const INVALID_ENCODING_MSG: &str = "invalid Base64 encoding";
+const INVALID_LENGTH_MSG: &str = "invalid Base64 length";
+
+/// Insufficient output buffer length.
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub struct InvalidLengthError;
+
+impl fmt::Display for InvalidLengthError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        f.write_str(INVALID_LENGTH_MSG)
+    }
+}
+
+#[cfg(feature = "std")]
+impl std::error::Error for InvalidLengthError {}
+
+/// Invalid encoding of provided Base64 string.
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub struct InvalidEncodingError;
+
+impl fmt::Display for InvalidEncodingError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        f.write_str(INVALID_ENCODING_MSG)
+    }
+}
+
+#[cfg(feature = "std")]
+impl std::error::Error for InvalidEncodingError {}
+
+/// Generic error, union of [`InvalidLengthError`] and [`InvalidEncodingError`].
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub enum Error {
+    /// Invalid encoding of provided Base64 string.
+    InvalidEncoding,
+
+    /// Insufficient output buffer length.
+    InvalidLength,
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        let s = match self {
+            Self::InvalidEncoding => INVALID_ENCODING_MSG,
+            Self::InvalidLength => INVALID_LENGTH_MSG,
+        };
+        f.write_str(s)
+    }
+}
+
+impl From<InvalidEncodingError> for Error {
+    #[inline]
+    fn from(_: InvalidEncodingError) -> Error {
+        Error::InvalidEncoding
+    }
+}
+
+impl From<InvalidLengthError> for Error {
+    #[inline]
+    fn from(_: InvalidLengthError) -> Error {
+        Error::InvalidLength
+    }
+}
+
+impl From<core::str::Utf8Error> for Error {
+    #[inline]
+    fn from(_: core::str::Utf8Error) -> Error {
+        Error::InvalidEncoding
+    }
+}
+
+#[cfg(feature = "std")]
+#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
+impl From<Error> for std::io::Error {
+    fn from(err: Error) -> std::io::Error {
+        // TODO(tarcieri): better customize `ErrorKind`?
+        std::io::Error::new(std::io::ErrorKind::InvalidData, err)
+    }
+}
+
+#[cfg(feature = "std")]
+#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
+impl std::error::Error for Error {}