coreapi unixfs: use fileAdder directly

License: MIT
Signed-off-by: Łukasz Magiera <magik6k@gmail.com>

options/unixfs.go

+package options
+
+import (
+	mh "gx/ipfs/QmPnFwZ2JXKnXgMw8CdBPxn7FWh6LLdjUjxV1fKHuJnkr8/go-multihash"
+)
+
+type UnixfsAddSettings struct {
+	CidVersion int
+	MhType     uint64
+
+	InlineLimit int
+}
+
+type UnixfsAddOption func(*UnixfsAddSettings) error
+
+func UnixfsAddOptions(opts ...UnixfsAddOption) (*UnixfsAddSettings, error) {
+	options := &UnixfsAddSettings{
+		CidVersion: -1,
+		MhType:     mh.SHA2_256,
+
+		InlineLimit: 0,
+	}
+
+	for _, opt := range opts {
+		err := opt(options)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return options, nil
+}
+
+type unixfsOpts struct{}
+
+var Unixfs unixfsOpts
+
+func (unixfsOpts) CidVersion(version int) UnixfsAddOption {
+	return func(settings *UnixfsAddSettings) error {
+		settings.CidVersion = version
+		return nil
+	}
+}
+
+func (unixfsOpts) Hash(mhtype uint64) UnixfsAddOption {
+	return func(settings *UnixfsAddSettings) error {
+		settings.MhType = mhtype
+		return nil
+	}
+}

unixfs.go

@@ -4,13 +4,15 @@ import (
 	"context"
 	"io"
 
+	options "github.com/ipfs/go-ipfs/core/coreapi/interface/options"
+
 	ipld "gx/ipfs/QmdDXJs4axxefSPgK6Y1QhpJWKuDPnGJiqgq4uncb4rFHL/go-ipld-format"
 )
 
 // UnixfsAPI is the basic interface to immutable files in IPFS
 type UnixfsAPI interface {
 	// Add imports the data from the reader into merkledag file
-	Add(context.Context, io.Reader) (ResolvedPath, error)
+	Add(context.Context, io.ReadCloser, ...options.UnixfsAddOption) (ResolvedPath, error)
 
 	// Cat returns a reader for the file
 	Cat(context.Context, Path) (Reader, error)