No longer clobbering broken files (re #14)

CHANGELOG.md

@@ -15,6 +15,7 @@ This project follows [semantic versioning](http://semver.org).
 * [fixed] Only repairing backups with --repair
 * [fixed] Fixed vacuum
 * [fixed] First removing bundles, then adding new ones
+* [fixed] No longer clobbering broken files
 
 
 ### v0.2.0 (2017-04-14)

src/bundledb/db.rs

@@ -348,9 +348,15 @@ impl BundleDb {
     }
 
     fn evacuate_broken_bundle(&mut self, mut bundle: StoredBundle) -> Result<(), BundleDbError> {
-        let new_path = self.layout.base_path().join(bundle.path.with_extension("bundle.broken"));
-        warn!("Moving bundle to {:?}", new_path);
-        try!(bundle.move_to(self.layout.base_path(), new_path));
+        let src = self.layout.base_path().join(&bundle.path);
+        let mut dst = src.with_extension("bundle.broken");
+        let mut num = 1;
+        while dst.exists() {
+            dst = src.with_extension(&format!("bundle.{}.broken", num));
+            num += 1;
+        }
+        warn!("Moving bundle to {:?}", dst);
+        try!(bundle.move_to(self.layout.base_path(), dst));
         self.remote_bundles.remove(&bundle.info.id);
         Ok(())
     }

src/repository/integrity.rs

@@ -159,7 +159,12 @@ impl Repository {
     fn evacuate_broken_backup(&self, name: &str) -> Result<(), RepositoryError> {
         warn!("The backup {} was corrupted and needed to be modified.", name);
         let src = self.layout.backup_path(name);
-        let dst = src.with_extension("backup.broken");
+        let mut dst = src.with_extension("backup.broken");
+        let mut num = 1;
+        while dst.exists() {
+            dst = src.with_extension(&format!("backup.{}.broken", num));
+            num += 1;
+        }
         if fs::rename(&src, &dst).is_err() {
             try!(fs::copy(&src, &dst));
             try!(fs::remove_file(&src));