Traverse commits

Cargo.toml

@@ -5,3 +5,4 @@ edition = "2021"
 
 [dependencies]
 clap = { version = "4.1.1", features = ["derive", "deprecated"] }
+git-repository = "0.33.0"

src/main.rs

@@ -1,6 +1,7 @@
 use std::path::PathBuf;
 
 use clap::Parser;
+use git_repository::{traverse::tree::Recorder, Commit};
 
 #[derive(Debug, Parser)]
 struct Args {
@@ -9,7 +10,66 @@ struct Args {
     repo: PathBuf,
 }
 
+struct TreeVisitor;
+
+impl git_repository::traverse::tree::Visit for TreeVisitor {
+    fn pop_front_tracked_path_and_set_current(&mut self) {
+        println!("pop_front_tracked_path_and_set_current");
+    }
+
+    fn push_back_tracked_path_component(&mut self, component: &git_repository::bstr::BStr) {
+        println!("push_back_tracked_path_component {component:?}");
+    }
+
+    fn push_path_component(&mut self, component: &git_repository::bstr::BStr) {
+        println!("push_path_component {component:?}");
+    }
+
+    fn pop_path_component(&mut self) {
+        println!("pop_path_component");
+    }
+
+    fn visit_tree(
+        &mut self,
+        entry: &git_repository::objs::tree::EntryRef<'_>,
+    ) -> git_repository::traverse::tree::visit::Action {
+        println!("visit_tree {entry:?}");
+        git_repository::traverse::tree::visit::Action::Continue
+    }
+
+    fn visit_nontree(
+        &mut self,
+        entry: &git_repository::objs::tree::EntryRef<'_>,
+    ) -> git_repository::traverse::tree::visit::Action {
+        println!("visit_nontree {entry:?}");
+        git_repository::traverse::tree::visit::Action::Continue
+    }
+}
+
+fn print_commit(commit: &Commit) {
+    println!("{commit:?}");
+    println!("{:?}", commit.message().unwrap());
+    let mut recorder = Recorder::default();
+    commit
+        .tree()
+        .unwrap()
+        .traverse()
+        .breadthfirst(&mut recorder)
+        .unwrap();
+    println!("{recorder:#?}");
+    println!();
+}
+
 fn main() {
     let args = Args::parse();
-    println!("Args: {args:#?}");
+    let repo = git_repository::discover(args.repo).unwrap();
+    let commit = repo.head_commit().unwrap();
+    for ancestor in commit.ancestors().all().unwrap() {
+        let ancestor = repo
+            .find_object(ancestor.unwrap())
+            .unwrap()
+            .try_into_commit()
+            .unwrap();
+        print_commit(&ancestor);
+    }
 }