feat: Allow copying local directories instead of using symlinks

get_file_test.go

@@ -35,6 +35,33 @@ func TestFileGetter(t *testing.T) {
 	}
 }
 
+func TestFileGetter_Copy(t *testing.T) {
+	g := new(FileGetter)
+	dst := tempDir(t)
+
+	g.Copy = true
+
+	// With a dir that doesn't exist
+	if err := g.Get(dst, testModuleURL("basic")); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	// Verify the destination folder is not a symlink
+	fi, err := os.Lstat(dst)
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	if fi.Mode()&os.ModeSymlink == 1 {
+		t.Fatal("destination is a symlink")
+	}
+
+	// Verify the main file exists
+	mainPath := filepath.Join(dst, "main.tf")
+	if _, err := os.Stat(mainPath); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+}
+
 func TestFileGetter_sourceFile(t *testing.T) {
 	g := new(FileGetter)
 	dst := tempDir(t)
@@ -73,6 +100,22 @@ func TestFileGetter_dir(t *testing.T) {
 	}
 }
 
+func TestFileGetter_dir_Copy(t *testing.T) {
+	g := new(FileGetter)
+	dst := tempDir(t)
+
+	g.Copy = true
+
+	if err := os.MkdirAll(dst, 0755); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	// With a dir that exists that isn't a symlink
+	if err := g.Get(dst, testModuleURL("basic")); err != nil {
+		t.Fatal("should not error")
+	}
+}
+
 func TestFileGetter_dirSymlink(t *testing.T) {
 	g := new(FileGetter)
 	dst := tempDir(t)

get_file_unix.go

@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows
 
 package getter
@@ -30,12 +31,12 @@ func (g *FileGetter) Get(dst string, u *url.URL) error {
 	// If the destination already exists, it must be a symlink
 	if err == nil {
 		mode := fi.Mode()
-		if mode&os.ModeSymlink == 0 {
+		if mode&os.ModeSymlink == 0 && !g.Copy {
 			return fmt.Errorf("destination exists and is not a symlink")
 		}
 
 		// Remove the destination
-		if err := os.Remove(dst); err != nil {
+		if err := os.RemoveAll(dst); err != nil {
 			return err
 		}
 	}
@@ -45,7 +46,21 @@ func (g *FileGetter) Get(dst string, u *url.URL) error {
 		return err
 	}
 
-	return os.Symlink(path, dst)
+	if !g.Copy {
+		return os.Symlink(path, dst)
+	}
+
+	if err := os.Mkdir(dst, g.client.mode(0755)); err != nil {
+		return err
+	}
+
+	var disableSymlinks bool
+
+	if g.client != nil && g.client.DisableSymlinks {
+		disableSymlinks = true
+	}
+
+	return copyDir(g.Context(), dst, path, false, disableSymlinks, g.client.umask())
 }
 
 func (g *FileGetter) GetFile(dst string, u *url.URL) error {

get_file_windows.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package getter
@@ -34,12 +35,12 @@ func (g *FileGetter) Get(dst string, u *url.URL) error {
 	// If the destination already exists, it must be a symlink
 	if err == nil {
 		mode := fi.Mode()
-		if mode&os.ModeSymlink == 0 {
+		if mode&os.ModeSymlink == 0 && !g.Copy {
 			return fmt.Errorf("destination exists and is not a symlink")
 		}
 
 		// Remove the destination
-		if err := os.Remove(dst); err != nil {
+		if err := os.RemoveAll(dst); err != nil {
 			return err
 		}
 	}
@@ -49,15 +50,27 @@ func (g *FileGetter) Get(dst string, u *url.URL) error {
 		return err
 	}
 
-	sourcePath := toBackslash(path)
+	if !g.Copy {
+		sourcePath := toBackslash(path)
+
+		// Use mklink to create a junction point
+		output, err := exec.CommandContext(ctx, "cmd", "/c", "mklink", "/J", dst, sourcePath).CombinedOutput()
+		if err != nil {
+			return fmt.Errorf("failed to run mklink %v %v: %v %q", dst, sourcePath, err, output)
+		}
+	}
+
+	if err := os.Mkdir(dst, g.client.mode(0755)); err != nil {
+		return err
+	}
+
+	var disableSymlinks bool
 
-	// Use mklink to create a junction point
-	output, err := exec.CommandContext(ctx, "cmd", "/c", "mklink", "/J", dst, sourcePath).CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("failed to run mklink %v %v: %v %q", dst, sourcePath, err, output)
+	if g.client != nil && g.client.DisableSymlinks {
+		disableSymlinks = true
 	}
 
-	return nil
+	return copyDir(g.Context(), dst, path, false, disableSymlinks, g.client.umask())
 }
 
 func (g *FileGetter) GetFile(dst string, u *url.URL) error {