1 files changed, 39 insertions, 1 deletions
diff --git a/apps/servers/octopus/supergit/src/commit.rs b/apps/servers/octopus/supergit/src/commit.rs
index bc7383d1ed6d..99c4dbba6fce 100644
--- a/apps/servers/octopus/supergit/src/commit.rs
+++ b/apps/servers/octopus/supergit/src/commit.rs
@@ -1,4 +1,4 @@
-use crate::{FileTree, HashId};
+use crate::{Diff, FileTree, HashId};
 use git2::Repository;
 use std::sync::Arc;
 
@@ -71,6 +71,44 @@ impl Commit {
         FileTree::new(&self.repo, self.id.clone())
     }
 
+    /// Get the list of paths in the repository touched by this commit
+    ///
+    /// Using this function directly is often not what you want.
+    /// Instead, use the `get_history(...)` function on `FileTree`,
+    /// which uses this function.
+    pub fn get_paths(&self) -> Vec<String> {
+        self.get_diff()
+            .map(|d| Diff::from(d))
+            .map_or(vec![], |d| d.get_paths())
+    }
+
+    /// Utility function to get a merged diff from all parents
+    fn get_diff(&self) -> Option<git2::Diff> {
+        // Get all diffs with parents
+        let stree = self.find().tree().unwrap();
+        let mut vec = self
+            .parents()
+            .into_iter()
+            .filter_map(|p| {
+                self.repo
+                    .diff_tree_to_tree(Some(&stree), Some(p.find().tree().as_ref().unwrap()), None)
+                    .ok()
+            })
+            .collect::<Vec<_>>();
+
+        // If there are no parents
+        if vec.len() == 0 {
+            vec = vec![self.repo.diff_tree_to_tree(Some(&stree), None, None).ok()?];
+        }
+
+        // Take the first and merge onto
+        let first = vec.remove(0);
+        Some(vec.iter().fold(first, |mut acc, diff| {
+            acc.merge(diff).unwrap();
+            acc
+        }))
+    }
+
     fn find(&self) -> git2::Commit {
         self.repo.find_commit(self.id.to_oid()).unwrap()
     }