1 files changed, 48 insertions, 0 deletions
diff --git a/lib/entry/libimagentryfilter/src/builtin/header/field_exists.rs b/lib/entry/libimagentryfilter/src/builtin/header/field_exists.rs
new file mode 100644
index 00000000..5fe672da
--- /dev/null
+++ b/lib/entry/libimagentryfilter/src/builtin/header/field_exists.rs
@@ -0,0 +1,48 @@
+//
+// 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::store::Entry;
+use libimagstore::toml_ext::TomlValueExt;
+
+use builtin::header::field_path::FieldPath;
+use filters::filter::Filter;
+
+pub struct FieldExists {
+    header_field_path: FieldPath,
+}
+
+impl FieldExists {
+
+    pub fn new(path: FieldPath) -> FieldExists {
+        FieldExists {
+            header_field_path: path,
+        }
+    }
+
+}
+
+impl Filter<Entry> for FieldExists {
+
+    fn filter(&self, e: &Entry) -> bool {
+        e.get_header().read(&self.header_field_path[..]).is_ok()
+    }
+
+}
+
+