Add MutRefWithHasher::rename_file(), which requires Ref impl in its own impl

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

1 files changed, 26 insertions, 1 deletions

diff --git a/lib/entry/libimagentryref/src/reference.rs b/lib/entry/libimagentryref/src/reference.rs
index 595962c4..e9bf5272 100644
--- a/lib/entry/libimagentryref/src/reference.rs
+++ b/lib/entry/libimagentryref/src/reference.rs
@@ -262,7 +262,7 @@ impl<'a, H: Hasher> Ref for RefWithHasher<'a, H> {
 
 }
 
-pub trait MutRef {
+pub trait MutRef : Ref {
     fn remove_ref(&mut self) -> Result<()>;
 
     /// Make a ref out of a normal (non-ref) entry.
@@ -273,6 +273,9 @@ pub trait MutRef {
         where P: AsRef<Path>,
               Coll: AsRef<str>;
 
+    fn rename_file<P>(&mut self, config: &Config, new_path: P) -> Result<()>
+        where P: AsRef<Path>;
+
 }
 
 impl<'a, H: Hasher> Ref for MutRefWithHasher<'a, H> {
@@ -469,6 +472,28 @@ impl<'a, H> MutRef for MutRefWithHasher<'a, H>
             .map(|_| ())
     }
 
+    /// Rename the file referenced by this ref
+    ///
+    /// Uses `MutRef::make_ref()` to ensure all ref settings are correct.
+    fn rename_file<P>(&mut self, config: &Config, new_path: P) -> Result<()>
+        where P: AsRef<Path>
+    {
+        let basepath_name = self.0
+            .get_header()
+            .read_string("ref.basepath")?
+            .ok_or_else(|| Error::from(EM::EntryHeaderFieldMissing("ref.basepath")))?;
+
+        let path = self.get_path_with_basepath_setting(config, basepath_name.clone())?;
+
+        trace!("Renaming {} to {}", path.display(), new_path.as_ref().display());
+        ::std::fs::rename(path, new_path.as_ref())?;
+
+        // worked...
+        // ensuring ref settings are correct
+        trace!("Ensuring ref settings are correct with Self::make_ref()");
+        self.make_ref(new_path, basepath_name, config, true)
+    }
+
 }
 
 /// Create a new header section for a "ref".