1 files changed, 61 insertions, 0 deletions
diff --git a/apps/servers/octopus/supergit/src/files/tree_utils.rs b/apps/servers/octopus/supergit/src/files/tree_utils.rs
new file mode 100644
index 000000000000..55a6c2e0ffab
--- /dev/null
+++ b/apps/servers/octopus/supergit/src/files/tree_utils.rs
@@ -0,0 +1,61 @@
+//! A set of tree utilities used internally in the tree.rs module
+
+use crate::HashId;
+use git2::{Repository, Tree};
+use std::{path::PathBuf, sync::Arc};
+
+/// Take a vector of path segments, and turn it into a valid offset path
+///
+/// There are tests to make sure this function works properly.
+/// Following are some example transformations.
+///
+/// * vec![] -> ""
+/// * vec!["foo"] -> "foo"
+/// * vec!["foo", "bar", "baz"] -> "foo/bar/baz"
+pub(super) fn path_segs_join(segments: Vec<&str>) -> String {
+    segments
+        .into_iter()
+        .fold(PathBuf::new(), |buf, seg| buf.join(seg))
+        .as_path()
+        .to_str()
+        .unwrap()
+        .to_owned()
+}
+
+/// Take an offset path inside the repository and split it into a vec
+pub(super) fn path_split(path: &str) -> Vec<&str> {
+    path.split("/").filter(|s| s != &"").collect()
+}
+
+/// Compare a path and entry to a target buffer
+pub(super) fn path_cmp(target: &Vec<&str>, path: &str, entry: &str) -> bool {
+    let mut buf = path_split(path);
+    buf.push(entry);
+
+    eprintln!("{:?}", buf);
+
+    target == &buf
+}
+
+/// Open a tree for a particular commit
+pub(super) fn open_tree<'r>(repo: &'r Arc<Repository>, c: &HashId) -> Option<Tree<'r>> {
+    repo.find_commit(c.to_oid()).unwrap().tree().ok()
+}
+
+#[test]
+fn empty_path() {
+    assert_eq!(path_segs_join(vec![]), String::from(""));
+}
+
+#[test]
+fn one_path() {
+    assert_eq!(path_segs_join(vec!["foo".into()]), String::from("foo"));
+}
+
+#[test]
+fn nested_path() {
+    assert_eq!(
+        path_segs_join(vec!["foo".into(), "bar".into(), "baz".into()]),
+        String::from("foo/bar/baz")
+    );
+}