Add BoolFilter

libimagentryfilter/src/builtin/bool_filter.rs

@@ -0,0 +1,22 @@
+use libimagstore::store::Entry;
+
+use filter::Filter;
+
+pub struct BoolFilter(bool);
+
+impl BoolFilter {
+
+    pub fn new(b: bool) -> BoolFilter {
+        BoolFilter(b)
+    }
+
+}
+
+impl Filter for BoolFilter {
+
+    fn filter(&self, _: &Entry) -> bool {
+        self.0
+    }
+
+}
+

libimagentryfilter/src/builtin/mod.rs

@@ -1,2 +1,5 @@
 pub mod content;
 pub mod header;
+
+pub mod bool_filter;
+