mirror of https://github.com/mikefarah/yq.git
89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
package yqlib
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import (
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"container/list"
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"gopkg.in/yaml.v3"
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)
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func DeleteChildOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
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lhs, err := d.GetMatchingNodes(matchingNodes, pathNode.Lhs)
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if err != nil {
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return nil, err
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}
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// for each lhs, splat the node,
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// the intersect it against the rhs expression
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// recreate the contents using only the intersection result.
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for el := lhs.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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elMap := list.New()
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elMap.PushBack(candidate)
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nodesToDelete, err := d.GetMatchingNodes(elMap, pathNode.Rhs)
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log.Debug("nodesToDelete:\n%v", NodesToString(nodesToDelete))
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if err != nil {
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return nil, err
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}
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if candidate.Node.Kind == yaml.SequenceNode {
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deleteFromArray(candidate, nodesToDelete)
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} else if candidate.Node.Kind == yaml.MappingNode {
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deleteFromMap(candidate, nodesToDelete)
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} else {
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log.Debug("Cannot delete from node that's not a map or array %v", NodeToString(candidate))
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}
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}
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return lhs, nil
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}
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func deleteFromMap(candidate *CandidateNode, nodesToDelete *list.List) {
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log.Debug("deleteFromMap")
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node := candidate.Node
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contents := node.Content
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newContents := make([]*yaml.Node, 0)
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for index := 0; index < len(contents); index = index + 2 {
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key := contents[index]
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value := contents[index+1]
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childCandidate := &CandidateNode{
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Node: value,
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Document: candidate.Document,
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Path: append(candidate.Path, key.Value),
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}
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// _, shouldDelete := nodesToDelete.Get(childCandidate.GetKey())
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shouldDelete := true
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log.Debugf("shouldDelete %v ? %v", childCandidate.GetKey(), shouldDelete)
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if !shouldDelete {
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newContents = append(newContents, key, value)
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}
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}
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node.Content = newContents
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}
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func deleteFromArray(candidate *CandidateNode, nodesToDelete *list.List) {
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log.Debug("deleteFromArray")
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node := candidate.Node
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contents := node.Content
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newContents := make([]*yaml.Node, 0)
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for index := 0; index < len(contents); index = index + 1 {
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value := contents[index]
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// childCandidate := &CandidateNode{
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// Node: value,
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// Document: candidate.Document,
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// Path: append(candidate.Path, index),
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// }
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// _, shouldDelete := nodesToDelete.Get(childCandidate.GetKey())
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shouldDelete := true
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if !shouldDelete {
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newContents = append(newContents, value)
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}
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}
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node.Content = newContents
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}
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