From e6b323eedb37e5956bb28b3b8ace1515263e4442 Mon Sep 17 00:00:00 2001
From: Prathamesh Musale <prathamesh.musale0@gmail.com>
Date: Thu, 11 Dec 2025 13:07:49 +0530
Subject: [PATCH] Use literal block scalar style for exporting multiline
 content

---
 pkg/transformer/kubernetes/k8sutils.go | 30 +++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/pkg/transformer/kubernetes/k8sutils.go b/pkg/transformer/kubernetes/k8sutils.go
index 331d23a9..dc720ea9 100644
--- a/pkg/transformer/kubernetes/k8sutils.go
+++ b/pkg/transformer/kubernetes/k8sutils.go
@@ -591,6 +591,24 @@ func removeEmptyInterfaces(obj interface{}) interface{} {
 }
 
 // Convert JSON to YAML.
+// setLiteralStyleForMultilineStrings walks through a yaml.Node tree and sets
+// multiline strings to use literal style (|) for better readability
+func setLiteralStyleForMultilineStrings(node *yaml.Node) {
+	if node == nil {
+		return
+	}
+
+	// If this is a scalar string node with newlines, use literal style
+	if node.Kind == yaml.ScalarNode && node.Tag == "!!str" && strings.Contains(node.Value, "\n") {
+		node.Style = yaml.LiteralStyle // Use | for multiline strings
+	}
+
+	// Recursively process child nodes
+	for _, child := range node.Content {
+		setLiteralStyleForMultilineStrings(child)
+	}
+}
+
 func jsonToYaml(j []byte, spaces int) ([]byte, error) {
 	// Convert the JSON to an object.
 	var jsonObj interface{}
@@ -604,10 +622,20 @@ func jsonToYaml(j []byte, spaces int) ([]byte, error) {
 		return nil, err
 	}
 	jsonObj = removeEmptyInterfaces(jsonObj)
+
+	// Create a yaml.Node to have control over string styles
+	var node yaml.Node
+	if err := node.Encode(jsonObj); err != nil {
+		return nil, err
+	}
+
+	// Set literal style for multiline strings (e.g., ConfigMap data)
+	setLiteralStyleForMultilineStrings(&node)
+
 	var b bytes.Buffer
 	encoder := yaml.NewEncoder(&b)
 	encoder.SetIndent(spaces)
-	if err := encoder.Encode(jsonObj); err != nil {
+	if err := encoder.Encode(&node); err != nil {
 		return nil, err
 	}
 	return b.Bytes(), nil