Move `main()` to `lib::write_since()`

Move this to a library function for better organisation. This will
facilitate splitting up and refining `write_since()`, and free up
`main()` for command line argument parsing.

2 files changed, 50 insertions, 44 deletions

diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..46e0fc8
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,48 @@
+#![warn(rust_2018_idioms)]
+
+use git2::Repository;
+
+
+pub fn write_since() {
+    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(),
+                // );
+
+                if let Some(line_number) = line.new_lineno() {
+                    let l = std::str::from_utf8(line.content()).unwrap();
+
+                    if l.contains("TODO") {
+                        print!(
+                            "{}:{}:{}",
+                            delta.new_file().path().unwrap().display(),
+                            line_number,
+                            l,
+                        );
+                    }
+                }
+
+                true
+            }
+        ),
+    ).unwrap();
+}
diff --git a/src/main.rs b/src/main.rs
index 8e818a4..2648353 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,50 +1,8 @@
 #![warn(rust_2018_idioms)]
 
-extern crate git2;
-
-use git2::Repository;
+use git_todo::write_since;
 
 
 fn main() {
-    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(),
-                // );
-
-                if let Some(line_number) = line.new_lineno() {
-                    let l = std::str::from_utf8(line.content()).unwrap();
-
-                    if l.contains("TODO") {
-                        print!(
-                            "{}:{}:{}",
-                            delta.new_file().path().unwrap().display(),
-                            line_number,
-                            l,
-                        );
-                    }
-                }
-
-                true
-            }
-        ),
-    ).unwrap();
+    write_since();
 }