validators 0.26.0

This library is designed for validating and modeling user input. The crate includes models, functions, traits, errors, and other dependencies.
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use core::fmt::{self, Display, Formatter};

/// Error from the `base64` validator.
#[derive(Debug, Clone)]
pub enum Base64Error {
    /// Incorrect Base64-encoded data.
    Invalid,
    /// May not be valid, but the absence of padding is guaranteed.
    PaddingMust,
    /// May not be valid, but it appears that the padding part exists.
    PaddingDisallow,
}

impl Display for Base64Error {
    #[inline]
    fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
        match self {
            Self::Invalid => f.write_str("invalid Base64"),
            Self::PaddingMust => f.write_str("padding not found"),
            Self::PaddingDisallow => f.write_str("padding not allowed"),
        }
    }
}

impl core::error::Error for Base64Error {}