feat: add null:// update handler

README.md

@@ -87,6 +87,10 @@ echo '{}' | FORMIDABLE_BROWSER="firefox" frmd \
 
 > TODO: Write doc + example
 
+#### `null://`
+
+> TODO: Write doc + example
+
 #### `file://`
 
 > TODO: Write doc + example

internal/command/common.go

@@ -16,6 +16,7 @@ import (
 	"forge.cadoles.com/wpetit/formidable/internal/data/scheme/stdin"
 	"forge.cadoles.com/wpetit/formidable/internal/data/updater/exec"
 	fileUpdater "forge.cadoles.com/wpetit/formidable/internal/data/updater/file"
+	"forge.cadoles.com/wpetit/formidable/internal/data/updater/null"
 	"forge.cadoles.com/wpetit/formidable/internal/data/updater/stdout"
 	"forge.cadoles.com/wpetit/formidable/internal/def"
 	"github.com/pkg/errors"
@@ -205,6 +206,7 @@ func newUpdater() *data.Updater {
 		stdout.NewUpdaterHandler(),
 		fileUpdater.NewUpdaterHandler(),
 		exec.NewUpdaterHandler(),
+		null.NewUpdaterHandler(),
 	)
 }
 

internal/data/updater/null/updater_handler.go

@@ -0,0 +1,34 @@
+package null
+
+import (
+	"io"
+	"net/url"
+)
+
+const SchemeNull = "null"
+
+type UpdaterHandler struct{}
+
+func (h *UpdaterHandler) Match(url *url.URL) bool {
+	return url.Scheme == SchemeNull
+}
+
+func (u *UpdaterHandler) Update(url *url.URL) (io.WriteCloser, error) {
+	return &nullCloser{}, nil
+}
+
+func NewUpdaterHandler() *UpdaterHandler {
+	return &UpdaterHandler{}
+}
+
+type nullCloser struct {
+	io.WriteCloser
+}
+
+func (c *nullCloser) Write(p []byte) (n int, err error) {
+	return io.Discard.Write(p)
+}
+
+func (c *nullCloser) Close() error {
+	return nil
+}