visualsign 0.1.0

Visualsign package defines the structures helper methods to create VisualSign payloads for Anchorage's Open Source VisualSign
Documentation 
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use std::fmt;

// Not every chain will support all the encodings, in which case they
// should return an error TransactionParseError::UnsupportedEncoding
// when the encoding is not supported.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum SupportedEncodings {
    Base64,
    Hex,
}

impl SupportedEncodings {
    /// Detect encoding format from string content
    pub fn detect(data: &str) -> Self {
        if data.chars().all(|c| c.is_ascii_hexdigit()) {
            Self::Hex
        } else {
            Self::Base64
        }
    }

    /// Convert encoding to string representation
    pub fn as_str(&self) -> &'static str {
        match self {
            Self::Base64 => "base64",
            Self::Hex => "hex",
        }
    }
}

impl fmt::Display for SupportedEncodings {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{}", self.as_str())
    }
}

impl std::str::FromStr for SupportedEncodings {
    type Err = String;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s.to_lowercase().as_str() {
            "base64" => Ok(Self::Base64),
            "hex" => Ok(Self::Hex),
            _ => Err(format!(
                "Unsupported encoding format: {s}. Supported formats are: base64, hex"
            )),
        }
    }
}