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array.go
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array.go
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package overlay
import (
"github.com/k14s/ytt/pkg/yamlmeta"
)
func (o OverlayOp) mergeArrayItem(
leftArray *yamlmeta.Array, newItem *yamlmeta.ArrayItem) error {
ann, err := NewArrayItemMatchAnnotation(newItem, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftArray)
if err != nil {
return err
}
if len(leftIdxs) == 0 {
return o.appendArrayItem(leftArray, newItem)
}
for _, leftIdx := range leftIdxs {
replace, err := o.apply(leftArray.Items[leftIdx].Value, newItem.Value)
if err != nil {
return err
}
if replace {
leftArray.Items[leftIdx].Value = newItem.Value
}
}
return nil
}
func (o OverlayOp) removeArrayItem(
leftArray *yamlmeta.Array, newItem *yamlmeta.ArrayItem) error {
ann, err := NewArrayItemMatchAnnotation(newItem, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftArray)
if err != nil {
return err
}
for _, leftIdx := range leftIdxs {
leftArray.Items[leftIdx] = nil
}
// Prune out all nil items
updatedItems := []*yamlmeta.ArrayItem{}
for _, item := range leftArray.Items {
if item != nil {
updatedItems = append(updatedItems, item)
}
}
leftArray.Items = updatedItems
return nil
}
func (o OverlayOp) replaceArrayItem(
leftArray *yamlmeta.Array, newItem *yamlmeta.ArrayItem) error {
ann, err := NewArrayItemMatchAnnotation(newItem, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftArray)
if err != nil {
return err
}
for _, leftIdx := range leftIdxs {
leftArray.Items[leftIdx] = newItem.DeepCopy()
}
return nil
}
func (o OverlayOp) insertArrayItem(
leftArray *yamlmeta.Array, newItem *yamlmeta.ArrayItem) error {
ann, err := NewArrayItemMatchAnnotation(newItem, o.Thread)
if err != nil {
return err
}
leftIdxs, err := ann.Indexes(leftArray)
if err != nil {
return err
}
insertAnn, err := NewInsertAnnotation(newItem)
if err != nil {
return err
}
updatedItems := []*yamlmeta.ArrayItem{}
for i, leftItem := range leftArray.Items {
matched := false
for _, leftIdx := range leftIdxs {
if i == leftIdx {
matched = true
if insertAnn.IsBefore() {
updatedItems = append(updatedItems, newItem.DeepCopy())
}
updatedItems = append(updatedItems, leftItem)
if insertAnn.IsAfter() {
updatedItems = append(updatedItems, newItem.DeepCopy())
}
break
}
}
if !matched {
updatedItems = append(updatedItems, leftItem)
}
}
leftArray.Items = updatedItems
return nil
}
func (o OverlayOp) appendArrayItem(
leftArray *yamlmeta.Array, newItem *yamlmeta.ArrayItem) error {
// No need to traverse further
leftArray.Items = append(leftArray.Items, newItem.DeepCopy())
return nil
}