src/main.rs: Print TODO lines between master...workdir

Look for TODO lines since the "master" branch. For each TODO line, print
the file it's in, its line number, and the line, à la grep.

1 files changed, 46 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index e7a11a9..7839c2d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,48 @@
+#![warn(rust_2018_idioms)]
+
+extern crate git2;
+
+use git2::Repository;
+
+
 fn main() {
-    println!("Hello, world!");
+    let repo = Repository::open(".").unwrap();
+
+    // let head = repo.head().unwrap().target().unwrap();
+    let master = repo.find_branch("master", git2::BranchType::Local).unwrap();
+    // let merge_base = repo.merge_base(head, master.get().target().unwrap()).unwrap();
+
+    let tree = master.get().peel_to_tree().unwrap();
+    let diff = repo.diff_tree_to_workdir(Some(&tree), None).unwrap();
+
+    diff.foreach(
+        &mut |_file, _progress| {
+            true
+        },
+        None,
+        None,
+        Some(
+            &mut |delta, hunk, line| {
+                // println!(
+                //     "d: {:?}, h: {:?}, l: {:?}",
+                //     delta,
+                //     hunk,
+                //     std::str::from_utf8(line.content()).unwrap(),
+                // );
+
+                let l = std::str::from_utf8(line.content()).unwrap();
+
+                if l.contains("TODO") {
+                    println!(
+                        "{}:{}:{}",
+                        delta.new_file().path().unwrap().display(),
+                        line.new_lineno().unwrap(),
+                        l,
+                    );
+                }
+
+                true
+            }
+        ),
+    ).unwrap();
 }