Lazy load object format with command line and don't do it in OpenRepository (#29712)

Most time, when invoking `git.OpenRepository`, `objectFormat` will not
be used, so it's a waste to invoke commandline to get the object format.
This PR make it a lazy operation, only invoke that when necessary.

(cherry picked from commit e84e5db6de0306d514b1f1a9657931fb7197a188)

modules/git/blame_sha256_test.go

@@ -120,11 +120,12 @@ func TestReadingBlameOutputSha256(t *testing.T) {
 			},
 		}
 
+		objectFormat, err := repo.GetObjectFormat()
+		assert.NoError(t, err)
 		for _, c := range cases {
 			commit, err := repo.GetCommit(c.CommitID)
 			assert.NoError(t, err)
-
+			blameReader, err := CreateBlameReader(ctx, objectFormat, "./tests/repos/repo6_blame_sha256", commit, "blame.txt", c.Bypass)
-			blameReader, err := CreateBlameReader(ctx, repo.objectFormat, "./tests/repos/repo6_blame_sha256", commit, "blame.txt", c.Bypass)
 			assert.NoError(t, err)
 			assert.NotNil(t, blameReader)
 			defer blameReader.Close()

modules/git/blame_test.go

@@ -118,11 +118,13 @@ func TestReadingBlameOutput(t *testing.T) {
 			},
 		}
 
+		objectFormat, err := repo.GetObjectFormat()
+		assert.NoError(t, err)
 		for _, c := range cases {
 			commit, err := repo.GetCommit(c.CommitID)
 			assert.NoError(t, err)
 
-			blameReader, err := CreateBlameReader(ctx, repo.objectFormat, "./tests/repos/repo6_blame", commit, "blame.txt", c.Bypass)
+			blameReader, err := CreateBlameReader(ctx, objectFormat, "./tests/repos/repo6_blame", commit, "blame.txt", c.Bypass)
 			assert.NoError(t, err)
 			assert.NotNil(t, blameReader)
 			defer blameReader.Close()

modules/git/commit_sha256_test.go

@@ -152,10 +152,13 @@ func TestHasPreviousCommitSha256(t *testing.T) {
 	commit, err := repo.GetCommit("f004f41359117d319dedd0eaab8c5259ee2263da839dcba33637997458627fdc")
 	assert.NoError(t, err)
 
+	objectFormat, err := repo.GetObjectFormat()
+	assert.NoError(t, err)
+
 	parentSHA := MustIDFromString("b0ec7af4547047f12d5093e37ef8f1b3b5415ed8ee17894d43a34d7d34212e9c")
 	notParentSHA := MustIDFromString("42e334efd04cd36eea6da0599913333c26116e1a537ca76e5b6e4af4dda00236")
-	assert.Equal(t, repo.objectFormat, parentSHA.Type())
+	assert.Equal(t, objectFormat, parentSHA.Type())
-	assert.Equal(t, repo.objectFormat.Name(), "sha256")
+	assert.Equal(t, objectFormat.Name(), "sha256")
 
 	haz, err := commit.HasPreviousCommit(parentSHA)
 	assert.NoError(t, err)

modules/git/repo_base_nogogit.go

@@ -71,11 +71,6 @@ func OpenRepository(ctx context.Context, repoPath string) (*Repository, error) {
 	repo.batchWriter, repo.batchReader, repo.batchCancel = CatFileBatch(ctx, repoPath)
 	repo.checkWriter, repo.checkReader, repo.checkCancel = CatFileBatchCheck(ctx, repoPath)
 
-	repo.objectFormat, err = repo.GetObjectFormat()
-	if err != nil {
-		return nil, err
-	}
-
 	return repo, nil
 }
 

modules/git/repo_commit.go

@@ -246,7 +246,12 @@ func (repo *Repository) CommitsByFileAndRange(opts CommitsByFileAndRangeOptions)
 		}
 	}()
 
-	len := repo.objectFormat.FullLength()
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return nil, err
+	}
+
+	len := objectFormat.FullLength()
 	commits := []*Commit{}
 	shaline := make([]byte, len+1)
 	for {

modules/git/repo_commit_gogit.go

@@ -41,7 +41,10 @@ func (repo *Repository) RemoveReference(name string) error {
 
 // ConvertToHash returns a Hash object from a potential ID string
 func (repo *Repository) ConvertToGitID(commitID string) (ObjectID, error) {
-	objectFormat := repo.objectFormat
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return nil, err
+	}
 	if len(commitID) == hash.HexSize && objectFormat.IsValid(commitID) {
 		ID, err := NewIDFromString(commitID)
 		if err == nil {

modules/git/repo_commit_nogogit.go

@@ -132,8 +132,11 @@ func (repo *Repository) getCommitFromBatchReader(rd *bufio.Reader, id ObjectID)
 
 // ConvertToGitID returns a GitHash object from a potential ID string
 func (repo *Repository) ConvertToGitID(commitID string) (ObjectID, error) {
-	IDType := repo.objectFormat
+	objectFormat, err := repo.GetObjectFormat()
-	if len(commitID) == IDType.FullLength() && IDType.IsValid(commitID) {
+	if err != nil {
+		return nil, err
+	}
+	if len(commitID) == objectFormat.FullLength() && objectFormat.IsValid(commitID) {
 		ID, err := NewIDFromString(commitID)
 		if err == nil {
 			return ID, nil
@@ -142,7 +145,7 @@ func (repo *Repository) ConvertToGitID(commitID string) (ObjectID, error) {
 
 	wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
 	defer cancel()
-	_, err := wr.Write([]byte(commitID + "\n"))
+	_, err = wr.Write([]byte(commitID + "\n"))
 	if err != nil {
 		return nil, err
 	}

modules/git/repo_compare.go

@@ -283,8 +283,12 @@ func (repo *Repository) GetPatch(base, head string, w io.Writer) error {
 // If base is undefined empty SHA (zeros), it only returns the files changed in the head commit
 // If base is the SHA of an empty tree (EmptyTreeSHA), it returns the files changes from the initial commit to the head commit
 func (repo *Repository) GetFilesChangedBetween(base, head string) ([]string, error) {
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return nil, err
+	}
 	cmd := NewCommand(repo.Ctx, "diff-tree", "--name-only", "--root", "--no-commit-id", "-r", "-z")
-	if base == repo.objectFormat.EmptyObjectID().String() {
+	if base == objectFormat.EmptyObjectID().String() {
 		cmd.AddDynamicArguments(head)
 	} else {
 		cmd.AddDynamicArguments(base, head)

modules/git/repo_compare_test.go

@@ -126,17 +126,20 @@ func TestGetCommitFilesChanged(t *testing.T) {
 	assert.NoError(t, err)
 	defer repo.Close()
 
+	objectFormat, err := repo.GetObjectFormat()
+	assert.NoError(t, err)
+
 	testCases := []struct {
 		base, head string
 		files      []string
 	}{
 		{
-			repo.objectFormat.EmptyObjectID().String(),
+			objectFormat.EmptyObjectID().String(),
 			"95bb4d39648ee7e325106df01a621c530863a653",
 			[]string{"file1.txt"},
 		},
 		{
-			repo.objectFormat.EmptyObjectID().String(),
+			objectFormat.EmptyObjectID().String(),
 			"8d92fc957a4d7cfd98bc375f0b7bb189a0d6c9f2",
 			[]string{"file2.txt"},
 		},
@@ -146,7 +149,7 @@ func TestGetCommitFilesChanged(t *testing.T) {
 			[]string{"file2.txt"},
 		},
 		{
-			repo.objectFormat.EmptyTree().String(),
+			objectFormat.EmptyTree().String(),
 			"8d92fc957a4d7cfd98bc375f0b7bb189a0d6c9f2",
 			[]string{"file1.txt", "file2.txt"},
 		},

modules/git/repo_index.go

@@ -94,6 +94,10 @@ func (repo *Repository) LsFiles(filenames ...string) ([]string, error) {
 
 // RemoveFilesFromIndex removes given filenames from the index - it does not check whether they are present.
 func (repo *Repository) RemoveFilesFromIndex(filenames ...string) error {
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return err
+	}
 	cmd := NewCommand(repo.Ctx, "update-index", "--remove", "-z", "--index-info")
 	stdout := new(bytes.Buffer)
 	stderr := new(bytes.Buffer)
@@ -101,7 +105,7 @@ func (repo *Repository) RemoveFilesFromIndex(filenames ...string) error {
 	for _, file := range filenames {
 		if file != "" {
 			buffer.WriteString("0 ")
-			buffer.WriteString(repo.objectFormat.EmptyObjectID().String())
+			buffer.WriteString(objectFormat.EmptyObjectID().String())
 			buffer.WriteByte('\t')
 			buffer.WriteString(file)
 			buffer.WriteByte('\000')

modules/git/repo_tag.go

@@ -141,7 +141,7 @@ func (repo *Repository) GetTagInfos(page, pageSize int) ([]*Tag, int, error) {
 			break
 		}
 
-		tag, err := parseTagRef(repo.objectFormat, ref)
+		tag, err := parseTagRef(ref)
 		if err != nil {
 			return nil, 0, fmt.Errorf("GetTagInfos: parse tag: %w", err)
 		}
@@ -161,7 +161,7 @@ func (repo *Repository) GetTagInfos(page, pageSize int) ([]*Tag, int, error) {
 }
 
 // parseTagRef parses a tag from a 'git for-each-ref'-produced reference.
-func parseTagRef(objectFormat ObjectFormat, ref map[string]string) (tag *Tag, err error) {
+func parseTagRef(ref map[string]string) (tag *Tag, err error) {
 	tag = &Tag{
 		Type: ref["objecttype"],
 		Name: ref["refname:lstrip=2"],

modules/git/repo_tag_test.go

@@ -194,7 +194,6 @@ func TestRepository_GetAnnotatedTag(t *testing.T) {
 }
 
 func TestRepository_parseTagRef(t *testing.T) {
-	sha1 := Sha1ObjectFormat
 	tests := []struct {
 		name string
 
@@ -351,7 +350,7 @@ Add changelog of v1.9.1 (#7859)
 	for _, test := range tests {
 		tc := test // don't close over loop variable
 		t.Run(tc.name, func(t *testing.T) {
-			got, err := parseTagRef(sha1, tc.givenRef)
+			got, err := parseTagRef(tc.givenRef)
 
 			if tc.wantErr {
 				require.Error(t, err)

modules/git/repo_tree_gogit.go

@@ -21,7 +21,12 @@ func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
 
 // GetTree find the tree object in the repository.
 func (repo *Repository) GetTree(idStr string) (*Tree, error) {
-	if len(idStr) != repo.objectFormat.FullLength() {
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return nil, err
+	}
+
+	if len(idStr) != objectFormat.FullLength() {
 		res, _, err := NewCommand(repo.Ctx, "rev-parse", "--verify").AddDynamicArguments(idStr).RunStdString(&RunOpts{Dir: repo.Path})
 		if err != nil {
 			return nil, err

modules/git/repo_tree_nogogit.go

@@ -51,7 +51,11 @@ func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
 	case "tree":
 		tree := NewTree(repo, id)
 		tree.ResolvedID = id
-		tree.entries, err = catBatchParseTreeEntries(repo.objectFormat, tree, rd, size)
+		objectFormat, err := repo.GetObjectFormat()
+		if err != nil {
+			return nil, err
+		}
+		tree.entries, err = catBatchParseTreeEntries(objectFormat, tree, rd, size)
 		if err != nil {
 			return nil, err
 		}
@@ -69,7 +73,11 @@ func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
 
 // GetTree find the tree object in the repository.
 func (repo *Repository) GetTree(idStr string) (*Tree, error) {
-	if len(idStr) != repo.objectFormat.FullLength() {
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return nil, err
+	}
+	if len(idStr) != objectFormat.FullLength() {
 		res, err := repo.GetRefCommitID(idStr)
 		if err != nil {
 			return nil, err

modules/git/tree_nogogit.go

@@ -77,8 +77,11 @@ func (t *Tree) ListEntries() (Entries, error) {
 		return nil, runErr
 	}
 
-	var err error
+	objectFormat, err := t.repo.GetObjectFormat()
-	t.entries, err = parseTreeEntries(t.repo.objectFormat, stdout, t)
+	if err != nil {
+		return nil, err
+	}
+	t.entries, err = parseTreeEntries(objectFormat, stdout, t)
 	if err == nil {
 		t.entriesParsed = true
 	}
@@ -101,8 +104,11 @@ func (t *Tree) listEntriesRecursive(extraArgs TrustedCmdArgs) (Entries, error) {
 		return nil, runErr
 	}
 
-	var err error
+	objectFormat, err := t.repo.GetObjectFormat()
-	t.entriesRecursive, err = parseTreeEntries(t.repo.objectFormat, stdout, t)
+	if err != nil {
+		return nil, err
+	}
+	t.entriesRecursive, err = parseTreeEntries(objectFormat, stdout, t)
 	if err == nil {
 		t.entriesRecursiveParsed = true
 	}