ipld_nostd/multibase/
base.rs

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use {
	super::{
		error::{Error, Result},
		impls::*,
	},
	alloc::{string::String, vec::Vec},
};

macro_rules! build_base_enum {
    ( $(#[$attr:meta] $code:expr => $base:ident,)* ) => {
        /// List of types currently supported in the multibase spec.
        ///
        /// Not all base types are supported by this library.
        #[derive(PartialEq, Eq, Clone, Copy, Debug)]
        pub enum Base {
            $( #[$attr] $base, )*
        }

        impl Base {
            /// Convert a number to the matching base algorithm, or `Error` if no algorithm is matching.
            pub fn from_code(code: char) -> Result<Self> {
        	    match code {
                    $( $code => Ok(Self::$base), )*
            	    _ => Err(Error::UnknownBase(code)),
        	    }
            }

            /// Get the code corresponding to the base algorithm.
            pub fn code(&self) -> char {
                match self {
                    $( Self::$base => $code, )*
                }
            }

            /// Encode the given byte slice to base string.
            pub fn encode<I: AsRef<[u8]>>(&self, input: I) -> String {
                match self {
                    $( Self::$base => $base::encode(input), )*
                }
            }

            /// Decode the base string.
            pub fn decode<I: AsRef<str>>(&self, input: I) -> Result<Vec<u8>> {
                match self {
                    $( Self::$base => $base::decode(input), )*
                }
            }
        }
    }
}

build_base_enum! {
		/// 8-bit binary (encoder and decoder keeps data unmodified).
		'\x00' => Identity,
		/// Base2 (alphabet: 01).
		'0' => Base2,
		/// Base8 (alphabet: 01234567).
		'7' => Base8,
		/// Base10 (alphabet: 0123456789).
		'9' => Base10,
		/// Base16 lower hexadecimal (alphabet: 0123456789abcdef).
		'f' => Base16Lower,
		/// Base16 upper hexadecimal (alphabet: 0123456789ABCDEF).
		'F' => Base16Upper,
		 /// Base32, rfc4648 no padding (alphabet: abcdefghijklmnopqrstuvwxyz234567).
		'b' => Base32Lower,
		/// Base32, rfc4648 no padding (alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ234567).
		'B' => Base32Upper,
		/// Base32, rfc4648 with padding (alphabet: abcdefghijklmnopqrstuvwxyz234567).
		'c' => Base32PadLower,
		/// Base32, rfc4648 with padding (alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ234567).
		'C' => Base32PadUpper,
		/// Base32hex, rfc4648 no padding (alphabet: 0123456789abcdefghijklmnopqrstuv).
		'v' => Base32HexLower,
		/// Base32hex, rfc4648 no padding (alphabet: 0123456789ABCDEFGHIJKLMNOPQRSTUV).
		'V' => Base32HexUpper,
		/// Base32hex, rfc4648 with padding (alphabet: 0123456789abcdefghijklmnopqrstuv).
		't' => Base32HexPadLower,
		/// Base32hex, rfc4648 with padding (alphabet: 0123456789ABCDEFGHIJKLMNOPQRSTUV).
		'T' => Base32HexPadUpper,
		/// z-base-32 (used by Tahoe-LAFS) (alphabet: ybndrfg8ejkmcpqxot1uwisza345h769).
		'h' => Base32Z,
		/// Base36, [0-9a-z] no padding (alphabet: 0123456789abcdefghijklmnopqrstuvwxyz).
		'k' => Base36Lower,
		/// Base36, [0-9A-Z] no padding (alphabet: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ).
		'K' => Base36Upper,
		/// Base58 flicker (alphabet: 123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ).
		'Z' => Base58Flickr,
		/// Base58 bitcoin (alphabet: 123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz).
		'z' => Base58Btc,
		/// Base64, rfc4648 no padding (alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/).
		'm' => Base64,
		/// Base64, rfc4648 with padding (alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/).
		'M' => Base64Pad,
		/// Base64 url, rfc4648 no padding (alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_).
		'u' => Base64Url,
		/// Base64 url, rfc4648 with padding (alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_).
		'U' => Base64UrlPad,
/// Base256Emoji (alphabet: 🚀🪐☄🛰🌌🌑🌒🌓🌔🌕🌖🌗🌘🌍🌏🌎🐉☀💻🖥💾💿😂❤😍🤣😊🙏💕😭😘👍😅👏😁🔥🥰💔💖💙😢🤔😆🙄💪😉☺👌🤗💜😔😎😇🌹🤦🎉💞✌✨🤷😱😌🌸🙌😋💗💚😏💛🙂💓🤩😄😀🖤😃💯🙈👇🎶😒🤭❣😜💋👀😪😑💥🙋😞😩😡🤪👊🥳😥🤤👉💃😳✋😚😝😴🌟😬🙃🍀🌷😻😓⭐✅🥺🌈😈🤘💦✔😣🏃💐☹🎊💘😠☝😕🌺🎂🌻😐🖕💝🙊😹🗣💫💀👑🎵🤞😛🔴😤🌼😫⚽🤙☕🏆🤫👈😮🙆🍻🍃🐶💁😲🌿🧡🎁⚡🌞🎈❌✊👋😰🤨😶🤝🚶💰🍓💢🤟🙁🚨💨🤬✈🎀🍺🤓😙💟🌱😖👶🥴▶➡❓💎💸⬇😨🌚🦋😷🕺⚠🙅😟😵👎🤲🤠🤧📌🔵💅🧐🐾🍒😗🤑🌊🤯🐷☎💧😯💆👆🎤🙇🍑❄🌴💣🐸💌📍🥀🤢👅💡💩👐📸👻🤐🤮🎼🥵🚩🍎🍊👼💍📣🥂)
		'🚀' => Base256Emoji,
}