forked from mystiq/dex
44 lines
985 B
Go
44 lines
985 B
Go
package etreeutils
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import (
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"encoding/xml"
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"github.com/beevik/etree"
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)
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// NSUnmarshalElement unmarshals the passed etree Element into the value pointed to by
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// v using encoding/xml in the context of the passed NSContext. If v implements
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// ElementKeeper, SetUnderlyingElement will be called on v with a reference to el.
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func NSUnmarshalElement(ctx NSContext, el *etree.Element, v interface{}) error {
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detatched, err := NSDetatch(ctx, el)
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if err != nil {
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return err
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}
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doc := etree.NewDocument()
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doc.AddChild(detatched)
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data, err := doc.WriteToBytes()
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if err != nil {
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return err
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}
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err = xml.Unmarshal(data, v)
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if err != nil {
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return err
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}
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switch v := v.(type) {
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case ElementKeeper:
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v.SetUnderlyingElement(el)
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}
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return nil
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}
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// ElementKeeper should be implemented by types which will be passed to
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// UnmarshalElement, but wish to keep a reference
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type ElementKeeper interface {
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SetUnderlyingElement(*etree.Element)
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UnderlyingElement() *etree.Element
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}
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