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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015-2020 Matthias Beyer <mail@beyermatthias.de> and contributors
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; version
// 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
use std::path::Path;
use failure::Fallible as Result;
pub trait Hasher {
const NAME: &'static str;
/// hash the file at path `path`
fn hash<P: AsRef<Path>>(path: P) -> Result<String>;
}
pub mod default {
pub use super::sha1::Sha1Hasher as DefaultHasher;
}
pub mod sha1 {
use std::path::Path;
use failure::Fallible as Result;
use sha1::{Sha1, Digest};
use crate::hasher::Hasher;
pub struct Sha1Hasher;
impl Sha1Hasher {
pub fn sha1_hash(s: &str) -> String {
format!("{:x}", Sha1::digest(s.as_bytes())) // TODO: Ugh...
}
}
impl Hasher for Sha1Hasher {
const NAME : &'static str = "sha1";
fn hash<P: AsRef<Path>>(path: P) -> Result<String> {
Ok(Sha1Hasher::sha1_hash(&::std::fs::read_to_string(path)?))
}
}
}
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