From 617cb97ddfab49229e67238c3c7da3cf79b3dc9a Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Thu, 30 Jun 2016 11:10:38 +0200
Subject: [PATCH] Add Ref::get_path_hash()

---
 libimagref/src/reference.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/libimagref/src/reference.rs b/libimagref/src/reference.rs
index e1ed79b9..8bdbbb6f 100644
--- a/libimagref/src/reference.rs
+++ b/libimagref/src/reference.rs
@@ -211,6 +211,17 @@ impl<'a> Ref<'a> {
         }
     }
 
+    /// Get the hash from the path of the ref
+    pub fn get_path_hash(&self) -> Option<String> {
+        self.0
+            .get_location()
+            .as_path()
+            .file_name()
+            .and_then(|osstr| osstr.to_str())
+            .and_then(|s| s.split("~").next())
+            .map(String::from)
+    }
+
     /// Get the hash of the link target which is stored in the ref object
     pub fn get_stored_hash(&self) -> Result<String> {
         match self.0.get_header().read("ref.content_hash") {