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Diffstat (limited to 'lib/domain/libimagcontact/src/iter.rs')
-rw-r--r-- | lib/domain/libimagcontact/src/iter.rs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/domain/libimagcontact/src/iter.rs b/lib/domain/libimagcontact/src/iter.rs new file mode 100644 index 00000000..b5f8974a --- /dev/null +++ b/lib/domain/libimagcontact/src/iter.rs @@ -0,0 +1,69 @@ +// +// imag - the personal information management suite for the commandline +// Copyright (C) 2015, 2016 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 contact::Contact; +use error::ContactError as CE; +use error::ContactErrorKind as CEK; +use error::Result; + +pub struct ContactIter<'a>(StoreIdIterator, &'a Store); + +/// Iterator over contacts +/// +/// As the libimagcontact works with libimagentryref in the backend, we must hold a reference to the +/// Store here as well, so we can check whether a fetched StoreId actually points to a contact +/// reference or not. +/// +/// So, the Iterator `Store::get()`s the object pointed to by the StoreId and returns it if +/// everything worked. +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(sid) => match self.1.get(sid.clone()).map_err(From::from) { + Err(e) => return Some(Err(e)), + Ok(None) => return Some(Err(CE::from_kind(CEK::EntryNotFound(sid)))), + Ok(Some(entry)) => match entry.is_contact().map_err(From::from) { + Ok(true) => return Some(Ok(entry)), + Ok(false) => continue, + Err(e) => return Some(Err(e)), + }, + + }, + } + } + } + +} + |