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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::fmt::{Display, Result as FmtResult, Formatter};
use std::str::FromStr;
use failure::Fallible as Result;
use failure::Error;
/// Message flags
///
/// As defined by https://cr.yp.to/proto/maildir.html with strong typing
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum MailFlag {
/// Flag "P" (passed): the user has resent/forwarded/bounced this message to someone else.
Passed,
/// Flag "R" (replied): the user has replied to this message.
Replied,
/// Flag "S" (seen): the user has viewed this message, though perhaps he didn't read all the way through it.
Seen,
/// Flag "T" (trashed): the user has moved this message to the trash; the trash will be emptied by a later user action.
Trashed,
/// Flag "D" (draft): the user considers this message a draft; toggled at user discretion.
Draft,
/// Flag "F" (flagged): user-defined flag; toggled at user discretion.
Flagged,
}
impl MailFlag {
pub fn as_char(self) -> char {
match self {
MailFlag::Passed => 'P',
MailFlag::Replied => 'R',
MailFlag::Seen => 'S',
MailFlag::Trashed => 'T',
MailFlag::Draft => 'D',
MailFlag::Flagged => 'F',
}
}
}
impl FromStr for MailFlag {
type Err = Error;
fn from_str(s: &str) -> Result<MailFlag> {
match s {
"P" => Ok(MailFlag::Passed),
"R" => Ok(MailFlag::Replied),
"S" => Ok(MailFlag::Seen),
"T" => Ok(MailFlag::Trashed),
"D" => Ok(MailFlag::Draft),
"F" => Ok(MailFlag::Flagged),
_ => Err(format_err!("Unknown message flag: '{}'", s)),
}
}
}
impl Display for MailFlag {
fn fmt(&self, f: &mut Formatter) -> FmtResult {
let s = match self {
MailFlag::Passed => "Passed",
MailFlag::Replied => "Replied",
MailFlag::Seen => "Seen",
MailFlag::Trashed => "Trashed",
MailFlag::Draft => "Draft",
MailFlag::Flagged => "Flagged",
};
write!(f, "{}", s)
}
}
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