52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
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package stanza
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import "encoding/xml"
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// ============================================================================
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// Generic / unknown content
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// Node is a generic structure to represent XML data. It is used to parse
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// unreferenced or custom stanza payload.
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type Node struct {
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XMLName xml.Name
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Attrs []xml.Attr `xml:"-"`
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Content string `xml:",innerxml"`
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Nodes []Node `xml:",any"`
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}
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func (n *Node) Namespace() string {
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return n.XMLName.Space
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}
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// Attr represents generic XML attributes, as used on the generic XML Node
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// representation.
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type Attr struct {
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K string
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V string
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}
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// UnmarshalXML is a custom unmarshal function used by xml.Unmarshal to
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// transform generic XML content into hierarchical Node structure.
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func (n *Node) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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// Assign "n.Attrs = start.Attr", without repeating xmlns in attributes:
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for _, attr := range start.Attr {
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// Do not repeat xmlns, it is already in XMLName
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if attr.Name.Local != "xmlns" {
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n.Attrs = append(n.Attrs, attr)
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}
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}
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type node Node
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return d.DecodeElement((*node)(n), &start)
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}
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// MarshalXML is a custom XML serializer used by xml.Marshal to serialize a
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// Node structure to XML.
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func (n Node) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error) {
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start.Attr = n.Attrs
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start.Name = n.XMLName
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err = e.EncodeToken(start)
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e.EncodeElement(n.Nodes, xml.StartElement{Name: n.XMLName})
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return e.EncodeToken(xml.EndElement{Name: start.Name})
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}
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