1 files changed, 56 insertions, 0 deletions
diff --git a/lib/domain/libimagmail/src/iter.rs b/lib/domain/libimagmail/src/iter.rs
new file mode 100644
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+++ b/lib/domain/libimagmail/src/iter.rs
@@ -0,0 +1,56 @@
+//
+// 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
+//
+
+//! Module for the MailIter
+//!
+//! MailIter is a iterator which takes an Iterator that yields `Ref` and yields itself
+//! `Result<Mail>`, where `Err(_)` is returned if the Ref is not a Mail or parsing of the
+//! referenced mail file failed.
+//!
+
+use mail::Mail;
+use result::Result;
+
+use libimagref::reference::Ref;
+
+use std::marker::PhantomData;
+
+pub struct MailIter<'a, I: 'a + Iterator<Item = Ref<'a>>> {
+    _marker: PhantomData<&'a I>,
+    i: I,
+}
+
+impl<'a, I: Iterator<Item = Ref<'a>>> MailIter<'a, I> {
+
+    pub fn new(i: I) -> MailIter<'a, I> {
+        MailIter { _marker: PhantomData, i: i }
+    }
+
+}
+
+impl<'a, I: Iterator<Item = Ref<'a>>> Iterator for MailIter<'a, I> {
+
+    type Item = Result<Mail<'a>>;
+
+    fn next(&mut self) -> Option<Result<Mail<'a>>> {
+        self.i.next().map(Mail::from_ref)
+    }
+
+}
+