1 files changed, 80 insertions, 0 deletions
diff --git a/modules/git/repo_archive.go b/modules/git/repo_archive.go
new file mode 100644
index 00000000..1bf1aa41
--- /dev/null
+++ b/modules/git/repo_archive.go
@@ -0,0 +1,80 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package git
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// ArchiveType archive types
+type ArchiveType int
+
+const (
+	// ZIP zip archive type
+	ZIP ArchiveType = iota + 1
+	// TARGZ tar gz archive type
+	TARGZ
+	// BUNDLE bundle archive type
+	BUNDLE
+)
+
+// String converts an ArchiveType to string
+func (a ArchiveType) String() string {
+	switch a {
+	case ZIP:
+		return "zip"
+	case TARGZ:
+		return "tar.gz"
+	case BUNDLE:
+		return "bundle"
+	}
+	return "unknown"
+}
+
+func ToArchiveType(s string) ArchiveType {
+	switch s {
+	case "zip":
+		return ZIP
+	case "tar.gz":
+		return TARGZ
+	case "bundle":
+		return BUNDLE
+	}
+	return 0
+}
+
+// CreateArchive create archive content to the target path
+func (repo *Repository) CreateArchive(ctx context.Context, format ArchiveType, target io.Writer, usePrefix bool, commitID string) error {
+	if format.String() == "unknown" {
+		return fmt.Errorf("unknown format: %v", format)
+	}
+
+	cmd := NewCommand(ctx, "archive")
+	if usePrefix {
+		cmd.AddOptionFormat("--prefix=%s", filepath.Base(strings.TrimSuffix(repo.Path, ".git"))+"/")
+	}
+	cmd.AddOptionFormat("--format=%s", format.String())
+	cmd.AddDynamicArguments(commitID)
+
+	// Avoid LFS hooks getting installed because of /etc/gitconfig, which can break pull requests.
+	env := append(os.Environ(), "GIT_CONFIG_NOSYSTEM=1")
+
+	var stderr strings.Builder
+	err := cmd.Run(&RunOpts{
+		Dir:    repo.Path,
+		Stdout: target,
+		Stderr: &stderr,
+		Env:    env,
+	})
+	if err != nil {
+		return ConcatenateError(err, stderr.String())
+	}
+	return nil
+}