shell: enable hash function selection when adding a file

Author: postables

add.go

@@ -8,7 +8,7 @@ import (
 	"os"
 	"path"
 
-	"github.com/ipfs/go-ipfs-files"
+	files "github.com/ipfs/go-ipfs-files"
 )
 
 type object struct {
@@ -45,6 +45,14 @@ func RawLeaves(enabled bool) AddOpts {
 	}
 }
 
+// Hash allows for selecting the multihash type
+func Hash(hash string) AddOpts {
+	return func(rb *RequestBuilder) error {
+		rb.Option("hash", hash)
+		return nil
+	}
+}
+
 func (s *Shell) Add(r io.Reader, options ...AddOpts) (string, error) {
 	fr := files.NewReaderFile(r)
 	slf := files.NewSliceDirectory([]files.DirEntry{files.FileEntry("", fr)})

shell_test.go

@@ -28,6 +28,9 @@ func TestAdd(t *testing.T) {
 	mhash, err := s.Add(bytes.NewBufferString("Hello IPFS Shell tests"))
 	is.Nil(err)
 	is.Equal(mhash, "QmUfZ9rAdhV5ioBzXKdUTh2ZNsz9bzbkaLVyQ8uc8pj21F")
+	mhash, err = s.Add(bytes.NewBufferString("Hello IPFS Shell tests"), Hash("sha3-256"))
+	is.Nil(err)
+	is.Equal(mhash, "zb2wwqxjxosf8GKEZCwAWSFZ879XFNca3De5yAoh5b2axAffc")
 }
 
 func TestRedirect(t *testing.T) {