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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; use libimagentryref::hasher::Hasher; use libimagerror::errors::ErrorMsg; use libimagentryref::hasher::sha1::Sha1Hasher; pub struct MailHasher; impl Hasher for MailHasher { const NAME: &'static str = "MailHasher"; /// hash the file at path `path` /// /// We create a sha1 over the path of the file (which is NOT safe, because mails can move) and /// the Message-ID of the mail itself. /// /// # TODO: Fix /// /// The file name is not constant with mail files, because flags are encoded in the filename. /// The path is not constant with mail files, because they can be moved between boxes. fn hash<P: AsRef<Path>>(path: P) -> Result<String> { let mut path_str = path .as_ref() .to_str() .map(String::from) .ok_or_else(|| ErrorMsg::UTF8Error)?; let message_id = crate::util::get_message_id_for_mailfile(path)?; path_str.push_str(&message_id); Ok(Sha1Hasher::sha1_hash(&path_str)) } }