backup-deduplicator 0.3.0

A tool to deduplicate backups. It builds a hash tree of all files and folders in the target directory. Optionally also traversing into archives like zip or tar files. The hash tree is then used to find duplicate files and folders.
Documentation 
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use sha2::Digest;
use crate::hash::{GeneralHash, GeneralHasher};

pub struct Sha512Hasher {
    hasher: sha2::Sha512
}
pub struct Sha256Hasher {
    hasher: sha2::Sha256
}

impl GeneralHasher for Sha512Hasher {
    fn new() -> Self {
        Sha512Hasher {
            hasher: sha2::Sha512::new()
        }
    }

    fn update(&mut self, data: &[u8]) {
        Digest::update(&mut self.hasher, data);
    }

    fn finalize(self: Box<Self>) -> GeneralHash {
        GeneralHash::SHA512(self.hasher.finalize().into())
    }
}
impl GeneralHasher for Sha256Hasher {
    fn new() -> Self {
        Sha256Hasher {
            hasher: sha2::Sha256::new()
        }
    }

    fn update(&mut self, data: &[u8]) {
        Digest::update(&mut self.hasher, data);
    }

    fn finalize(self: Box<Self>) -> GeneralHash {
        GeneralHash::SHA256(self.hasher.finalize().into())
    }
}