1 files changed, 55 insertions, 0 deletions
diff --git a/lib/entry/libimagentryref/src/hasher.rs b/lib/entry/libimagentryref/src/hasher.rs
new file mode 100644
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+++ b/lib/entry/libimagentryref/src/hasher.rs
@@ -0,0 +1,55 @@
+//
+// imag - the personal information management suite for the commandline
+// Copyright (C) 2015-2019 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 std::path::Path;
+
+use failure::Fallible as Result;
+
+pub trait Hasher {
+    const NAME: &'static str;
+
+    /// hash the file at path `path`
+    fn hash<P: AsRef<Path>>(path: P) -> Result<String>;
+}
+
+pub mod default {
+    pub use super::sha1::Sha1Hasher as DefaultHasher;
+}
+
+pub mod sha1 {
+    use std::path::Path;
+
+    use failure::Fallible as Result;
+    use sha1::{Sha1, Digest};
+
+    use hasher::Hasher;
+
+    pub struct Sha1Hasher;
+
+    impl Hasher for Sha1Hasher {
+        const NAME : &'static str = "sha1";
+
+        fn hash<P: AsRef<Path>>(path: P) -> Result<String> {
+            let digest = Sha1::digest(::std::fs::read_to_string(path)?.as_bytes());
+            Ok(format!("{:x}", digest)) // TODO: Ugh...
+        }
+    }
+
+}
+