Get XML namespace prefix in Go using Unmarshal -

i know if possible xml namespace prefix using unmarshal method in encoding/xml.

for example, have:

<application xmlns="http://wadl.dev.java.net/2009/02" xmlns:xs="http://www.w3.org/2001/xmlschema"> </application> 

i know how retrieve xs defining prefix xmlschema, without having use token method.

just every other attribute:

type app struct {     xs string `xml:"xs,attr"` } 

playground: http://play.golang.org/p/2iomkx1jov.

it gets trickier if have actual xs attribute, sans xmlns. if add namespace uri xs's tag, get error.

edit: if want all declared namespaces, can define custom unmarshalxml on element , scan it's attributes:

type app struct {     namespaces map[string]string     foo        int `xml:"foo"` }  func (a *app) unmarshalxml(d *xml.decoder, start xml.startelement) error {     a.namespaces = map[string]string{}     _, attr := range start.attr {         if attr.name.space == "xmlns" {             a.namespaces[attr.name.local] = attr.value         }     }      // go on unmarshalling.     type app app     aa := (*app)(a)     return d.decodeelement(aa, &start) } 

playground: http://play.golang.org/p/u4rjbg3_jw.