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merge3.go
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merge3.go
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// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
// Package merge contains libraries for merging fields from one RNode to another
// RNode
package merge3
import (
"sigs.k8s.io/kustomize/kyaml/yaml"
"sigs.k8s.io/kustomize/kyaml/yaml/walk"
)
func Merge(dest, original, update *yaml.RNode) (*yaml.RNode, error) {
// if update == nil && original != nil => declarative deletion
return walk.Walker{
Visitor: Visitor{},
VisitKeysAsScalars: true,
Sources: []*yaml.RNode{dest, original, update}}.Walk()
}
func MergeStrings(dest, original, update string, infer bool) (string, error) {
srcOriginal, err := yaml.Parse(original)
if err != nil {
return "", err
}
srcUpdated, err := yaml.Parse(update)
if err != nil {
return "", err
}
d, err := yaml.Parse(dest)
if err != nil {
return "", err
}
result, err := walk.Walker{
InferAssociativeLists: infer,
Visitor: Visitor{},
VisitKeysAsScalars: true,
Sources: []*yaml.RNode{d, srcOriginal, srcUpdated}}.Walk()
if err != nil {
return "", err
}
return result.String()
}