1 files changed, 48 insertions, 0 deletions
diff --git a/src/tools/ak/extractaar/buildozer.go b/src/tools/ak/extractaar/buildozer.go
new file mode 100644
index 0000000..f7f52a5
--- /dev/null
+++ b/src/tools/ak/extractaar/buildozer.go
@@ -0,0 +1,48 @@
+// Copyright 2022 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package extractaar
+
+import (
+	"fmt"
+	"strings"
+)
+
+// BuildozerError represent a rule configuration error fixable with a buildozer command.
+type BuildozerError struct {
+	Msg      string
+	RuleAttr string
+	NewValue string
+}
+
+func mergeBuildozerErrors(label string, errs []*BuildozerError) string {
+	var msg strings.Builder
+	msg.WriteString(fmt.Sprintf("error(s) found while processing aar '%s':\n", label))
+	var buildozerCommand strings.Builder
+	buildozerCommand.WriteString("Use the following command to fix the target:\nbuildozer ")
+	useBuildozer := false
+	for _, err := range errs {
+		msg.WriteString(fmt.Sprintf("\t- %s\n", err.Msg))
+		if err.NewValue != "" {
+			useBuildozer = true
+			buildozerCommand.WriteString(fmt.Sprintf("'set %s %s' ", err.RuleAttr, err.NewValue))
+		}
+	}
+	buildozerCommand.WriteString(label)
+
+	if useBuildozer {
+		msg.WriteString(buildozerCommand.String())
+	}
+	return msg.String()
+}