cmd/lncli: expose bumping fee of inputs/transactions over lncli

cmd/lncli/types.go

@@ -1,7 +1,11 @@
 package main
 
 import (
+	"encoding/hex"
+	"errors"
 	"fmt"
+	"strconv"
+	"strings"
 
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/lightningnetwork/lnd/lnrpc"
@@ -17,6 +21,27 @@ func NewOutPointFromProto(op *lnrpc.OutPoint) OutPoint {
 	return OutPoint(fmt.Sprintf("%v:%d", hash, op.OutputIndex))
 }
 
+// NewProtoOutPoint parses an OutPoint into its corresponding lnrpc.OutPoint
+// type.
+func NewProtoOutPoint(op string) (*lnrpc.OutPoint, error) {
+	parts := strings.Split(op, ":")
+	if len(parts) != 2 {
+		return nil, errors.New("outpoint should be of the form txid:index")
+	}
+	txid := parts[0]
+	if hex.DecodedLen(len(txid)) != chainhash.HashSize {
+		return nil, fmt.Errorf("invalid hex-encoded txid %v", txid)
+	}
+	outputIndex, err := strconv.Atoi(parts[1])
+	if err != nil {
+		return nil, fmt.Errorf("invalid output index: %v", err)
+	}
+	return &lnrpc.OutPoint{
+		TxidStr:     txid,
+		OutputIndex: uint32(outputIndex),
+	}, nil
+}
+
 // Utxo displays information about an unspent output, including its address,
 // amount, pkscript, and confirmations.
 type Utxo struct {