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package xmpp
import (
"encoding/xml"
"errors"
"log"
)
type tokenRouter struct {
start xml.StartElement
end xml.EndElement
buffer []xml.Token
level uint16 // XML nesting level
enc *encoder
}
func newTokenRouter(e *encoder) tokenRouter {
return tokenRouter{
buffer: make([]xml.Token, 0),
level: 0,
enc: e,
}
}
func (r *tokenRouter) route(t xml.Token) error {
r.buffer = append(r.buffer, t)
switch unwrapped := t.(type) {
case xml.StartElement:
r.level += 1
if r.level == 1 {
r.start = unwrapped
r.buffer = r.buffer[:0]
// call start handler
}
case xml.EndElement:
if r.level == 0 {
log.Println("Ignoring XML end element on nesting level zero")
return nil
}
r.level -= 1
switch r.level {
case 0:
return errors.New("Stream was closed by server")
case 1:
// call elementRouter
r.buffer = r.buffer[:1]
}
}
return nil
}
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