Add builtin content filter: length filtering

libimagentryfilter/src/builtin/content/length/is_over.rs

@@ -0,0 +1,28 @@
+use libimagstore::store::Entry;
+
+use builtin::header::field_path::FieldPath;
+use filter::Filter;
+
+pub struct ContentLengthIsOver {
+    val: usize
+}
+
+impl ContentLengthIsOver {
+
+    pub fn new(value: usize) -> ContentLengthIsOver {
+        ContentLengthIsOver {
+            val: value,
+        }
+    }
+
+}
+
+impl Filter for ContentLengthIsOver {
+
+    fn filter(&self, e: &Entry) -> bool {
+        e.get_content().len() > self.val
+    }
+
+}
+
+

libimagentryfilter/src/builtin/content/length/is_under.rs

@@ -0,0 +1,28 @@
+use libimagstore::store::Entry;
+
+use builtin::header::field_path::FieldPath;
+use filter::Filter;
+
+pub struct ContentLengthIsUnder {
+    val: usize
+}
+
+impl ContentLengthIsUnder {
+
+    pub fn new(value: usize) -> ContentLengthIsUnder {
+        ContentLengthIsUnder {
+            val: value,
+        }
+    }
+
+}
+
+impl Filter for ContentLengthIsUnder {
+
+    fn filter(&self, e: &Entry) -> bool {
+        e.get_content().len() < self.val
+    }
+
+}
+
+

libimagentryfilter/src/builtin/content/length/mod.rs

@@ -0,0 +1,2 @@
+pub mod is_over;
+pub mod is_under;

libimagentryfilter/src/builtin/content/mod.rs

@@ -1 +1,2 @@
 pub mod grep;
+pub mod length;