mirror of https://github.com/mikefarah/yq.git
40 lines
943 B
Go
40 lines
943 B
Go
package yqlib
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import (
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"container/list"
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"fmt"
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yaml "gopkg.in/yaml.v3"
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)
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func lengthOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
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log.Debugf("-- lengthOperation")
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var results = list.New()
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for el := context.MatchingNodes.Front(); el != nil; el = el.Next() {
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candidate := el.Value.(*CandidateNode)
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targetNode := unwrapDoc(candidate.Node)
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var length int
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switch targetNode.Kind {
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case yaml.ScalarNode:
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if targetNode.Tag == "!!null" {
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length = 0
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} else {
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length = len(targetNode.Value)
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}
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case yaml.MappingNode:
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length = len(targetNode.Content) / 2
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case yaml.SequenceNode:
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length = len(targetNode.Content)
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default:
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length = 0
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}
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node := &yaml.Node{Kind: yaml.ScalarNode, Value: fmt.Sprintf("%v", length), Tag: "!!int"}
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result := candidate.CreateReplacement(node)
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results.PushBack(result)
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}
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return context.ChildContext(results), nil
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}
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