feat(index): add ability to pass options to addAll(...) API method (#68)

lib/src/bindings/index.dart

@@ -292,6 +292,7 @@ void addFromBuffer({
 void addAll({
   required Pointer<git_index> indexPointer,
   required List<String> pathspec,
+  required int flags,
 }) {
   final pathspecC = calloc<git_strarray>();
   final pathPointers = pathspec.map((e) => e.toChar()).toList();
@@ -307,7 +308,7 @@ void addAll({
   final error = libgit2.git_index_add_all(
     indexPointer,
     pathspecC,
-    0,
+    flags,
     nullptr,
     nullptr,
   );

lib/src/git_types.dart

@@ -1173,3 +1173,22 @@ enum GitBlobFilter {
   const GitBlobFilter(this.value);
   final int value;
 }
+
+/// Flags for APIs that add files matching pathspec.
+enum GitIndexAddOption {
+  defaults(0),
+
+  /// Skip the checking of ignore rules.
+  force(1),
+
+  /// Disable glob expansion and force exact matching of files in working
+  /// directory.
+  disablePathspecMatch(2),
+
+  /// Check that each entry in the pathspec is an exact match to a filename on
+  /// disk is either not ignored or already in the index.
+  checkPathspec(4);
+
+  const GitIndexAddOption(this.value);
+  final int value;
+}

lib/src/index.dart

@@ -215,9 +215,18 @@ class Index with IterableMixin<IndexEntry> {
   /// that matches will be added to the index (either updating an existing
   /// entry or adding a new entry).
   ///
+  /// [flags] is optional combination of [GitIndexAddOption] flags.
+  ///
   /// Throws a [LibGit2Error] if error occured.
-  void addAll(List<String> pathspec) {
-    bindings.addAll(indexPointer: _indexPointer, pathspec: pathspec);
+  void addAll(
+    List<String> pathspec, {
+    Set<GitIndexAddOption> flags = const {GitIndexAddOption.defaults},
+  }) {
+    bindings.addAll(
+      indexPointer: _indexPointer,
+      pathspec: pathspec,
+      flags: flags.fold(0, (acc, e) => acc | e.value),
+    );
   }
 
   /// Updates all index entries to match the working directory.

test/git_types_test.dart

@@ -551,4 +551,15 @@ void main() {
       expect(actual, expected);
     });
   });
+
+  test('GitIndexAddOption returns correct values', () {
+    const expected = {
+      GitIndexAddOption.defaults: 0,
+      GitIndexAddOption.force: 1,
+      GitIndexAddOption.disablePathspecMatch: 2,
+      GitIndexAddOption.checkPathspec: 4,
+    };
+    final actual = {for (final e in GitIndexAddOption.values) e: e.value};
+    expect(actual, expected);
+  });
 }

test/index_test.dart

@@ -175,7 +175,10 @@ void main() {
     group('addAll()', () {
       test('adds with provided pathspec', () {
         index.clear();
-        index.addAll(['file', 'feature_file']);
+        index.addAll(
+          ['file', 'feature_file'],
+          flags: {GitIndexAddOption.checkPathspec, GitIndexAddOption.force},
+        );
 
         expect(index.length, 2);
         expect(index['file'].oid.sha, fileSha);