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Tweak parameters of NewPrefix functions. #51

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Tweak parameters of NewPrefix functions. #51

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13 changes: 8 additions & 5 deletions cid.go
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Original file line number Diff line number Diff line change
Expand Up @@ -145,21 +145,24 @@ func NewCidV1(codecType uint64, mhash mh.Multihash) *Cid {
}

// NewPrefixV0 returns a CIDv0 prefix with the specified multihash type.
func NewPrefixV0(mhType uint64) Prefix {
func NewPrefixV0() Prefix {
return Prefix{
MhType: mhType,
MhLength: mh.DefaultLengths[mhType],
MhType: mh.SHA2_256,
MhLength: mh.DefaultLengths[mh.SHA2_256],
Version: 0,
Codec: DagProtobuf,
}
}

// NewPrefixV1 returns a CIDv1 prefix with the specified codec and multihash
// type.
func NewPrefixV1(codecType uint64, mhType uint64) Prefix {
func NewPrefixV1(codecType uint64, mhType uint64, mhLen int) Prefix {
if mhLen == -1 {
mhLen = mh.DefaultLengths[mhType]
}
return Prefix{
MhType: mhType,
MhLength: mh.DefaultLengths[mhType],
MhLength: mhLen,
Version: 1,
Codec: codecType,
}
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4 changes: 2 additions & 2 deletions cid_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -193,7 +193,7 @@ func TestNewPrefixV1(t *testing.T) {
data := []byte("this is some test content")

// Construct c1
prefix := NewPrefixV1(DagCBOR, mh.SHA2_256)
prefix := NewPrefixV1(DagCBOR, mh.SHA2_256, -1)
c1, err := prefix.Sum(data)
if err != nil {
t.Fatal(err)
Expand Down Expand Up @@ -222,7 +222,7 @@ func TestNewPrefixV0(t *testing.T) {
data := []byte("this is some test content")

// Construct c1
prefix := NewPrefixV0(mh.SHA2_256)
prefix := NewPrefixV0()
c1, err := prefix.Sum(data)
if err != nil {
t.Fatal(err)
Expand Down