pkg: hide it by moving to _pkg.dev

The idea here is to preserve the history of `dev` branch development and its
code when merging with the `master`. Later this code could be moved into the
masters code where appropriate.

_pkg.dev/wire/payload/transaction/util.go

@@ -0,0 +1,62 @@
+package transaction
+
+import (
+	"bufio"
+	"encoding/hex"
+	"errors"
+
+	"github.com/CityOfZion/neo-go/pkg/wire/payload/transaction/types"
+)
+
+// FromReader returns a transaction from a bufio.Reader
+func FromReader(reader *bufio.Reader) (Transactioner, error) {
+
+	t, err := reader.Peek(1)
+
+	typ := types.TX(t[0])
+	var trans Transactioner
+
+	switch typ {
+	case types.Miner:
+		miner := NewMiner(0)
+		err = miner.Decode(reader)
+		trans = miner
+	case types.Contract:
+		contract := NewContract(0)
+		err = contract.Decode(reader)
+		trans = contract
+	case types.Invocation:
+		invoc := NewInvocation(0)
+		err = invoc.Decode(reader)
+		trans = invoc
+	case types.Claim:
+		claim := NewClaim(0)
+		err = claim.Decode(reader)
+		trans = claim
+	case types.Register:
+		reg := NewRegister(0)
+		err = reg.Decode(reader)
+		trans = reg
+	case types.Issue:
+		iss := NewIssue(0)
+		err = iss.Decode(reader)
+		trans = iss
+	case types.Publish:
+		pub := NewPublish(0)
+		err = pub.Decode(reader)
+		trans = pub
+	case types.State:
+		state := NewStateTX(0)
+		err = state.Decode(reader)
+		trans = state
+	case types.Enrollment:
+		enr := NewEnrollment(0)
+		err = enr.Decode(reader)
+		trans = enr
+	case types.Agency:
+		err = errors.New("unsupported transaction type: Agency")
+	default:
+		err = errors.New("unsupported transaction with byte type " + hex.EncodeToString([]byte{t[0]}))
+	}
+	return trans, err
+}