formidable/internal/data/decoder.go

39 lines
698 B
Go

package data
import (
"io"
"net/url"
"github.com/pkg/errors"
)
type DecoderHandler interface {
URLMatcher
Decode(url *url.URL, reader io.Reader) (interface{}, error)
}
type Decoder struct {
handlers []DecoderHandler
}
func (d *Decoder) Decode(url *url.URL, reader io.ReadCloser) (interface{}, error) {
for _, h := range d.handlers {
if !h.Match(url) {
continue
}
data, err := h.Decode(url, reader)
if err != nil {
return nil, errors.WithStack(err)
}
return data, nil
}
return nil, errors.Wrapf(ErrHandlerNotFound, "could not find matching handler for url '%s'", url.String())
}
func NewDecoder(handlers ...DecoderHandler) *Decoder {
return &Decoder{handlers}
}