func paths(w io.Writer, r io.Reader) error {
return decode(r, func(codec *mux.Multicodec, v interface{}) error {
p := mc.HeaderPath(codec.Last.Header())
_, err := fmt.Fprintln(w, string(p))
return err
})
}
func codecByName(name string) mc.Multicodec {
for _, c := range codecs {
if name == string(mc.HeaderPath(c.Header())) {
return c
}
}
return nil
}
func init() {
// by default, always encode things as cbor
defaultCodec = string(mc.HeaderPath(mccbor.Header))
muxCodec = mcmux.MuxMulticodec([]mc.Multicodec{
mccbor.Multicodec(),
jsonMulticodec(),
pb.Multicodec(),
}, selectCodec)
}
func h2p(w io.Writer, r io.Reader) error {
for {
hdr, err := mc.ReadHeader(r)
if err != nil {
if err == io.EOF {
return nil
}
return err
}
p := string(mc.HeaderPath(hdr))
_, err = fmt.Fprintln(w, p)
if err != nil {
return err
}
}
}
func selectCodec(v interface{}, codecs []mc.Multicodec) mc.Multicodec {
vn, ok := v.(*ipld.Node)
if !ok {
return nil
}
codecKey, err := codecKey(*vn)
if err != nil {
return nil
}
for _, c := range codecs {
if codecKey == string(mc.HeaderPath(c.Header())) {
return c
}
}
return nil // no codec
}