Refactor ls command

crates/rustic_core/examples/ls.rs

@@ -0,0 +1,33 @@
+//! `ls` example
+use rustic_core::{Repository, RepositoryOptions, TreeStreamerOptions};
+use simplelog::{Config, LevelFilter, SimpleLogger};
+
+fn main() {
+    // Display info logs
+    let _ = SimpleLogger::init(LevelFilter::Info, Config::default());
+
+    // Open repository
+    let repo_opts = RepositoryOptions {
+        repository: Some("/tmp/repo".to_string()),
+        password: Some("test".to_string()),
+        ..Default::default()
+    };
+
+    let repo = Repository::new(&repo_opts)
+        .unwrap()
+        .open()
+        .unwrap()
+        .to_indexed()
+        .unwrap();
+
+    // use latest snapshot without filtering snapshots
+    let node = repo.node_from_snapshot_path("latest", |_| true).unwrap();
+
+    // recursively list the snapshot contents using no additional filtering
+    let recursive = true;
+    let streamer_opts = TreeStreamerOptions::default();
+    for item in repo.ls(&node, &streamer_opts, recursive).unwrap() {
+        let (path, _) = item.unwrap();
+        println!("{path:?} ");
+    }
+}

crates/rustic_core/src/blob/tree.rs

@@ -158,17 +158,23 @@ where
     path: PathBuf,
     be: BE,
     overrides: Option<Override>,
+    recursive: bool,
 }
 
 impl<BE> NodeStreamer<BE>
 where
     BE: IndexedBackend,
 {
     pub fn new(be: BE, node: &Node) -> RusticResult<Self> {
-        Self::new_streamer(be, node, None)
+        Self::new_streamer(be, node, None, true)
     }
 
-    fn new_streamer(be: BE, node: &Node, overrides: Option<Override>) -> RusticResult<Self> {
+    fn new_streamer(
+        be: BE,
+        node: &Node,
+        overrides: Option<Override>,
+        recursive: bool,
+    ) -> RusticResult<Self> {
         let inner = if node.is_dir() {
             Tree::from_backend(&be, node.subtree.unwrap())?
                 .nodes
@@ -182,10 +188,16 @@ where
             path: PathBuf::new(),
             be,
             overrides,
+            recursive,
         })
     }
 
-    pub fn new_with_glob(be: BE, node: &Node, opts: &TreeStreamerOptions) -> RusticResult<Self> {
+    pub fn new_with_glob(
+        be: BE,
+        node: &Node,
+        opts: &TreeStreamerOptions,
+        recursive: bool,
+    ) -> RusticResult<Self> {
         let mut override_builder = OverrideBuilder::new("/");
 
         for g in &opts.glob {
@@ -228,7 +240,7 @@ where
             .build()
             .map_err(TreeErrorKind::BuildingNodeStreamerFailed)?;
 
-        Self::new_streamer(be, node, Some(overrides))
+        Self::new_streamer(be, node, Some(overrides), recursive)
     }
 }
 
@@ -246,15 +258,17 @@ where
             match self.inner.next() {
                 Some(node) => {
                     let path = self.path.join(node.name());
-                    if let Some(id) = node.subtree {
-                        self.path.push(node.name());
-                        let be = self.be.clone();
-                        let tree = match Tree::from_backend(&be, id) {
-                            Ok(tree) => tree,
-                            Err(err) => return Some(Err(err)),
-                        };
-                        let old_inner = mem::replace(&mut self.inner, tree.nodes.into_iter());
-                        self.open_iterators.push(old_inner);
+                    if self.recursive {
+                        if let Some(id) = node.subtree {
+                            self.path.push(node.name());
+                            let be = self.be.clone();
+                            let tree = match Tree::from_backend(&be, id) {
+                                Ok(tree) => tree,
+                                Err(err) => return Some(Err(err)),
+                            };
+                            let old_inner = mem::replace(&mut self.inner, tree.nodes.into_iter());
+                            self.open_iterators.push(old_inner);
+                        }
                     }
 
                     if let Some(overrides) = &self.overrides {

crates/rustic_core/src/repository.rs

@@ -39,8 +39,8 @@ use crate::{
     error::{KeyFileErrorKind, RepositoryErrorKind, RusticErrorKind},
     repofile::{configfile::ConfigFile, keyfile::find_key_in_backend},
     BlobType, DecryptFullBackend, Id, IndexBackend, IndexedBackend, NoProgressBars, Node,
-    ProgressBars, PruneOpts, PrunePlan, RusticResult, SnapshotFile, SnapshotGroup,
-    SnapshotGroupCriterion, Tree,
+    NodeStreamer, ProgressBars, PruneOpts, PrunePlan, RusticResult, SnapshotFile, SnapshotGroup,
+    SnapshotGroupCriterion, Tree, TreeStreamerOptions,
 };
 
 mod warm_up;
@@ -607,4 +607,13 @@ impl<P: ProgressBars, S: Indexed> Repository<P, S> {
     pub fn dump(&self, node: &Node, w: &mut impl Write) -> RusticResult<()> {
         commands::dump::dump(self, node, w)
     }
+
+    pub fn ls(
+        &self,
+        node: &Node,
+        streamer_opts: &TreeStreamerOptions,
+        recursive: bool,
+    ) -> RusticResult<impl Iterator<Item = RusticResult<(PathBuf, Node)>>> {
+        NodeStreamer::new_with_glob(self.index().clone(), node, streamer_opts, recursive)
+    }
 }

src/commands/ls.rs

@@ -7,11 +7,7 @@ use crate::{commands::open_repository, status_err, Application, RUSTIC_APP};
 use abscissa_core::{Command, Runnable, Shutdown};
 use anyhow::Result;
 
-use std::path::Path;
-
-use rustic_core::{
-    IndexBackend, NodeStreamer, Open, ProgressBars, SnapshotFile, Tree, TreeStreamerOptions,
-};
+use rustic_core::TreeStreamerOptions;
 
 /// `ls` subcommand
 #[derive(clap::Parser, Command, Debug)]
@@ -40,44 +36,17 @@ impl Runnable for LsCmd {
 impl LsCmd {
     fn inner_run(&self) -> Result<()> {
         let config = RUSTIC_APP.config();
-        let progress_options = &config.global.progress_options;
 
-        let repo = open_repository(&config)?;
+        let repo = open_repository(&config)?.to_indexed()?;
 
-        let be = repo.dbe();
-        let mut recursive = self.recursive;
+        let node =
+            repo.node_from_snapshot_path(&self.snap, |sn| config.snapshot_filter.matches(sn))?;
 
-        let (id, path) = self.snap.split_once(':').unwrap_or_else(|| {
-            recursive = true;
-            (&self.snap, "")
-        });
-        let snap = SnapshotFile::from_str(
-            be,
-            id,
-            |sn| config.snapshot_filter.matches(sn),
-            &progress_options.progress_counter(""),
-        )?;
-        let index = IndexBackend::new(be, &progress_options.progress_counter(""))?;
-        let node = Tree::node_from_path(&index, snap.tree, Path::new(path))?;
+        let recursive = !self.snap.contains(':') || self.recursive;
 
-        if recursive {
-            NodeStreamer::new_with_glob(index, &node, &self.streamer_opts)?.for_each(|item| {
-                let (path, _) = match item {
-                    Ok(it) => it,
-                    Err(err) => {
-                        status_err!("{}", err);
-                        RUSTIC_APP.shutdown(Shutdown::Crash);
-                    }
-                };
-                println!("{path:?} ");
-            });
-        } else if node.is_dir() {
-            let tree = Tree::from_backend(&index, node.subtree.unwrap())?.nodes;
-            for node in tree {
-                println!("{:?} ", node.name());
-            }
-        } else {
-            println!("{:?} ", node.name());
+        for item in repo.ls(&node, &self.streamer_opts, recursive)? {
+            let (path, _) = item?;
+            println!("{path:?} ");
         }
 
         Ok(())

src/commands/restore.rs

@@ -278,7 +278,7 @@ impl RestoreCmd {
         let mut next_dst = dst_iter.next();
 
         let mut node_streamer =
-            NodeStreamer::new_with_glob(index.clone(), node, &self.streamer_opts.clone())?;
+            NodeStreamer::new_with_glob(index.clone(), node, &self.streamer_opts.clone(), true)?;
         let mut next_node = node_streamer.next().transpose()?;
 
         loop {
@@ -344,7 +344,7 @@ impl RestoreCmd {
     ) -> Result<()> {
         // walk over tree in repository and compare with tree in dest
         let mut node_streamer =
-            NodeStreamer::new_with_glob(index, node, &self.streamer_opts.clone())?;
+            NodeStreamer::new_with_glob(index, node, &self.streamer_opts.clone(), true)?;
         let mut dir_stack = Vec::new();
         while let Some((path, node)) = node_streamer.next().transpose()? {
             match node.node_type {