Remove backup subpath

README.md

@@ -110,7 +110,6 @@ Recommended: Brotli/2-7
     - http://mahkoh.github.io/posix/doc/posix/sys/time/fn.utimes.html
 
 ### CLI functionality
-- Remove backup subtrees
 - list --tree
 
 ### Other

src/cli/mod.rs

@@ -193,11 +193,12 @@ pub fn run() {
             }
         },
         Arguments::Remove{repo_path, backup_name, inode} => {
-            let repo = open_repository(&repo_path);
-            if let Some(_inode) = inode {
-                let _backup = get_backup(&repo, &backup_name);
-                error!("Removing backup subtrees is not implemented yet");
-                return
+            let mut repo = open_repository(&repo_path);
+            if let Some(inode) = inode {
+                let mut backup = get_backup(&repo, &backup_name);
+                checked(repo.remove_backup_path(&mut backup, inode), "remove backup subpath");
+                checked(repo.save_backup(&backup, &backup_name), "save backup file");
+                info!("The backup subpath has been deleted, run vacuum to reclaim space");
             } else {
                 checked(repo.delete_backup(&backup_name), "delete backup");
                 info!("The backup has been deleted, run vacuum to reclaim space");
@@ -220,7 +221,6 @@ pub fn run() {
             if !force {
                 info!("Run with --force to actually execute this command");
             }
-            return
         },
         Arguments::Check{repo_path, backup_name, inode, full} => {
             let mut repo = open_repository(&repo_path);
@@ -235,6 +235,7 @@ pub fn run() {
             } else {
                 checked(repo.check(full), "check repository")
             }
+            info!("Integrity verified")
         },
         Arguments::List{repo_path, backup_name, inode} => {
             let mut repo = open_repository(&repo_path);
@@ -269,7 +270,6 @@ pub fn run() {
                 let backup = get_backup(&repo, &backup_name);
                 if let Some(_inode) = inode {
                     error!("Displaying information on single inodes is not implemented yet");
-                    return
                 } else {
                     print_backup(&backup);
                 }

src/repository/backup.rs

@@ -179,11 +179,16 @@ impl Backup {
 
 quick_error!{
     #[derive(Debug)]
+    #[allow(unknown_lints,large_enum_variant)]
     pub enum BackupError {
         FailedPaths(backup: Backup, failed: Vec<PathBuf>) {
             description("Some paths could not be backed up")
             display("Backup error: some paths could not be backed up")
         }
+        RemoveRoot {
+            description("The root of a backup can not be removed")
+            display("Backup error: the root of a backup can not be removed")
+        }
     }
 }
 
@@ -421,18 +426,45 @@ impl Repository {
         }
     }
 
-    pub fn get_backup_inode<P: AsRef<Path>>(&mut self, backup: &Backup, path: P) -> Result<Inode, RepositoryError> {
+    pub fn remove_backup_path<P: AsRef<Path>>(&mut self, backup: &mut Backup, path: P) -> Result<(), RepositoryError> {
+        let mut inodes = try!(self.get_backup_path(backup, path));
+        let to_remove = inodes.pop().unwrap();
+        let mut remove_from = match inodes.pop() {
+            Some(inode) => inode,
+            None => return Err(BackupError::RemoveRoot.into())
+        };
+        remove_from.children.as_mut().unwrap().remove(&to_remove.name);
+        let mut last_inode_chunks = try!(self.put_inode(&remove_from));
+        let mut last_inode_name = remove_from.name;
+        while let Some(mut inode) = inodes.pop() {
+            inode.children.as_mut().unwrap().insert(last_inode_name, last_inode_chunks);
+            last_inode_chunks = try!(self.put_inode(&inode));
+            last_inode_name = inode.name;
+        }
+        backup.root = last_inode_chunks;
+        Ok(())
+    }
+
+    pub fn get_backup_path<P: AsRef<Path>>(&mut self, backup: &Backup, path: P) -> Result<Vec<Inode>, RepositoryError> {
+        let mut inodes = vec![];
         let mut inode = try!(self.get_inode(&backup.root));
         for c in path.as_ref().components() {
             if let path::Component::Normal(name) = c {
                 let name = name.to_string_lossy();
                 if let Some(chunks) = inode.children.as_mut().and_then(|c| c.remove(&name as &str)) {
+                    inodes.push(inode);
                     inode = try!(self.get_inode(&chunks));
                 } else {
                     return Err(RepositoryError::NoSuchFileInBackup(backup.clone(), path.as_ref().to_owned()));
                 }
             }
         }
-        Ok(inode)
+        inodes.push(inode);
+        Ok(inodes)
+    }
+
+    #[inline]
+    pub fn get_backup_inode<P: AsRef<Path>>(&mut self, backup: &Backup, path: P) -> Result<Inode, RepositoryError> {
+        self.get_backup_path(backup, path).map(|mut inodes| inodes.pop().unwrap())
     }
 }