71 lines
1.4 KiB
Rust
71 lines
1.4 KiB
Rust
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use std::fmt;
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use std::cmp::PartialEq;
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use std::ops::Deref;
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use std::str::FromStr;
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use hex::{ToHex, FromHex};
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use hash::H520;
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use keys::Error;
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/// http://bitcoin.stackexchange.com/q/12554/40688
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pub enum Signature {
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DER(Vec<u8>),
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Compact(H520),
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}
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impl Deref for Signature {
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type Target = [u8];
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fn deref(&self) -> &Self::Target {
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match *self {
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Signature::DER(ref hash) => hash,
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Signature::Compact(ref hash) => hash,
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}
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}
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}
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impl PartialEq for Signature {
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fn eq(&self, other: &Signature) -> bool {
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let s_slice: &[u8] = self;
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let o_slice: &[u8] = other;
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s_slice == o_slice
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}
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}
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impl fmt::Debug for Signature {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match *self {
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Signature::DER(ref hash) => writeln!(f, "normal: {}", hash.to_hex()),
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Signature::Compact(ref hash) => writeln!(f, "compact: {}", hash.to_hex()),
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}
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}
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}
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impl fmt::Display for Signature {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.to_hex().fmt(f)
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}
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}
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impl FromStr for Signature {
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type Err = Error;
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fn from_str(s: &str) -> Result<Self, Error> {
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let vec = try!(s.from_hex().map_err(|_| Error::InvalidSignature));
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let signature = match vec.len() {
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65 => {
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let mut compact = [0u8; 65];
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compact.copy_from_slice(&vec);
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Signature::Compact(compact)
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},
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_ => Signature::DER(vec),
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};
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Ok(signature)
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}
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}
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impl From<&'static str> for Signature {
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fn from(s: &'static str) -> Self {
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s.parse().unwrap()
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}
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}
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