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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 libimagstore::storeid::StoreIdIterator;
use libimagstore::store::Store;
use libimagstore::store::FileLockEntry;
use libimagerror::errors::Error as EM;
use crate::contact::Contact;
use anyhow::Result;
use anyhow::Error;
use anyhow::Context;
pub struct ContactIter<'a>(StoreIdIterator, &'a Store);
/// Iterator over contacts
impl<'a> ContactIter<'a> {
pub fn new(sii: StoreIdIterator, store: &'a Store) -> ContactIter<'a> {
ContactIter(sii, store)
}
}
impl<'a> Iterator for ContactIter<'a> {
type Item = Result<FileLockEntry<'a>>;
fn next(&mut self) -> Option<Self::Item> {
loop {
match self.0.next() {
None => return None,
Some(Err(e)) => {
let e = Err(e)
.context("Found error while iterating over contacts")
.map_err(Error::from);
return Some(e)
},
Some(Ok(sid)) => match self.1.get(sid.clone()).map_err(From::from) {
Err(e) => return Some(Err(e)),
Ok(None) => return
Some(Err(Error::from(EM::EntryNotFound(sid.local_display_string())))),
Ok(Some(entry)) => match entry.is_contact()
.context("Cannot check whether entry is a contact")
.map_err(Error::from)
{
Ok(true) => return Some(Ok(entry)),
Ok(false) => continue,
Err(e) => return Some(Err(e)),
},
},
}
}
}
}
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