1 files changed, 57 insertions, 0 deletions
diff --git a/lib/entry/libimagentryref/src/util.rs b/lib/entry/libimagentryref/src/util.rs
new file mode 100644
index 00000000..c69e4d48
--- /dev/null
+++ b/lib/entry/libimagentryref/src/util.rs
@@ -0,0 +1,57 @@
+//
+// 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 std::path::PathBuf;
+
+use error::RefErrorKind as REK;
+use error::RefError as RE;
+use error::Result;
+use error::ResultExt;
+
+use libimagstore::store::Entry;
+
+use toml::Value;
+use toml_query::read::TomlValueReadExt;
+
+/// Creates a Hash from a PathBuf by making the PathBuf absolute and then running a hash
+/// algorithm on it
+pub fn hash_path(pb: &PathBuf) -> Result<String> {
+    use crypto::sha1::Sha1;
+    use crypto::digest::Digest;
+
+    match pb.to_str() {
+        Some(s) => {
+            let mut hasher = Sha1::new();
+            hasher.input_str(s);
+            Ok(hasher.result_str())
+        },
+        None => return Err(RE::from_kind(REK::PathUTF8Error)),
+    }
+}
+
+/// Read the reference from a file
+pub fn read_reference(refentry: &Entry) -> Result<PathBuf> {
+    match refentry.get_header().read("ref.path") {
+        Ok(Some(&Value::String(ref s))) => Ok(PathBuf::from(s)),
+        Ok(Some(_)) => Err(RE::from_kind(REK::HeaderTypeError)),
+        Ok(None)    => Err(RE::from_kind(REK::HeaderFieldMissingError)),
+        Err(e)      => Err(e).chain_err(|| REK::StoreReadError),
+    }
+}
+