1 files changed, 68 insertions, 0 deletions
diff --git a/lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs b/lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs
new file mode 100644
index 00000000..799fee68
--- /dev/null
+++ b/lib/entry/libimagentryfilter/src/builtin/header/field_grep.rs
@@ -0,0 +1,68 @@
+//
+// 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 regex::Regex;
+use toml::Value;
+
+use libimagstore::store::Entry;
+
+use builtin::header::field_path::FieldPath;
+use builtin::header::field_predicate::FieldPredicate;
+use builtin::header::field_predicate::Predicate;
+use filters::filter::Filter;
+
+struct EqGrep{
+    regex: Regex
+}
+
+impl Predicate for EqGrep {
+
+    fn evaluate(&self, v: Value) -> bool {
+        match v {
+            Value::String(s) => self.regex.captures(&s[..]).is_some(),
+            _                 => false,
+        }
+    }
+
+}
+
+/// Check whether certain header field in a entry is equal to a value
+pub struct FieldGrep {
+    filter: FieldPredicate<EqGrep>,
+}
+
+impl FieldGrep {
+
+    pub fn new(path: FieldPath, grep: Regex) -> FieldGrep {
+        FieldGrep {
+            filter: FieldPredicate::new(path, Box::new(EqGrep { regex: grep})),
+        }
+    }
+
+}
+
+impl Filter<Entry> for FieldGrep {
+
+    fn filter(&self, e: &Entry) -> bool {
+        self.filter.filter(e)
+    }
+
+}
+
+