mirror of
https://github.com/mikefarah/yq.git
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35 lines
886 B
Go
35 lines
886 B
Go
package yqlib
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import (
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"container/list"
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"fmt"
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"math/rand"
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)
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func shuffleOperator(_ *dataTreeNavigator, context Context, _ *ExpressionNode) (Context, error) {
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// ignore CWE-338 gosec issue of not using crypto/rand
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// this is just to shuffle an array rather generating a
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// secret or something that needs proper rand.
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myRand := rand.New(rand.NewSource(Now().UnixNano())) // #nosec
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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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if candidate.Kind != SequenceNode {
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return context, fmt.Errorf("node at path [%v] is not an array (it's a %v)", candidate.GetNicePath(), candidate.Tag)
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}
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result := candidate.Copy()
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a := result.Content
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myRand.Shuffle(len(a), func(i, j int) { a[i], a[j] = a[j], a[i] })
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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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