Use native git variants by default with go-git variants as build tag (#13673)

* Move last commit cache back into modules/git

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Remove go-git from the interface for last commit cache

Signed-off-by: Andrew Thornton <art27@cantab.net>

* move cacheref to last_commit_cache

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Remove go-git from routers/private/hook

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Move FindLFSFiles to pipeline

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Make no-go-git variants

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Submodule RefID

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix issue with GetCommitsInfo

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix GetLastCommitForPaths

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Improve efficiency

Signed-off-by: Andrew Thornton <art27@cantab.net>

* More efficiency

Signed-off-by: Andrew Thornton <art27@cantab.net>

* even faster

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Reduce duplication

* As per @lunny

Signed-off-by: Andrew Thornton <art27@cantab.net>

* attempt to fix drone

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix test-tags

Signed-off-by: Andrew Thornton <art27@cantab.net>

* default to use no-go-git variants and add gogit build tag

Signed-off-by: Andrew Thornton <art27@cantab.net>

* placate lint

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per @6543

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

1 files changed, 94 insertions, 0 deletions

diff --git a/modules/git/tree_gogit.go b/modules/git/tree_gogit.go
new file mode 100644
index 0000000000..79132c5548
--- /dev/null
+++ b/modules/git/tree_gogit.go
@@ -0,0 +1,94 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+// +build gogit
+
+package git
+
+import (
+	"io"
+
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/object"
+)
+
+// Tree represents a flat directory listing.
+type Tree struct {
+	ID         SHA1
+	ResolvedID SHA1
+	repo       *Repository
+
+	gogitTree *object.Tree
+
+	// parent tree
+	ptree *Tree
+}
+
+func (t *Tree) loadTreeObject() error {
+	gogitTree, err := t.repo.gogitRepo.TreeObject(t.ID)
+	if err != nil {
+		return err
+	}
+
+	t.gogitTree = gogitTree
+	return nil
+}
+
+// ListEntries returns all entries of current tree.
+func (t *Tree) ListEntries() (Entries, error) {
+	if t.gogitTree == nil {
+		err := t.loadTreeObject()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	entries := make([]*TreeEntry, len(t.gogitTree.Entries))
+	for i, entry := range t.gogitTree.Entries {
+		entries[i] = &TreeEntry{
+			ID:             entry.Hash,
+			gogitTreeEntry: &t.gogitTree.Entries[i],
+			ptree:          t,
+		}
+	}
+
+	return entries, nil
+}
+
+// ListEntriesRecursive returns all entries of current tree recursively including all subtrees
+func (t *Tree) ListEntriesRecursive() (Entries, error) {
+	if t.gogitTree == nil {
+		err := t.loadTreeObject()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	var entries []*TreeEntry
+	seen := map[plumbing.Hash]bool{}
+	walker := object.NewTreeWalker(t.gogitTree, true, seen)
+	for {
+		fullName, entry, err := walker.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		if seen[entry.Hash] {
+			continue
+		}
+
+		convertedEntry := &TreeEntry{
+			ID:             entry.Hash,
+			gogitTreeEntry: &entry,
+			ptree:          t,
+			fullName:       fullName,
+		}
+		entries = append(entries, convertedEntry)
+	}
+
+	return entries, nil
+}