package main import ( "encoding/base64" "encoding/hex" "fmt" "github.com/urfave/cli/v2" "github.com/filecoin-project/lotus/chain/types" ) var bigIntParseCmd = &cli.Command{ Name: "bigint", Description: "parse encoded big ints", Flags: []cli.Flag{ &cli.StringFlag{ Name: "enc", Value: "base64", Usage: "specify input encoding to parse", }, }, Action: func(cctx *cli.Context) error { val := cctx.Args().Get(0) var dec []byte switch cctx.String("enc") { case "base64": d, err := base64.StdEncoding.DecodeString(val) if err != nil { return fmt.Errorf("decoding base64 value: %w", err) } dec = d case "hex": d, err := hex.DecodeString(val) if err != nil { return fmt.Errorf("decoding hex value: %w", err) } dec = d default: return fmt.Errorf("unrecognized encoding: %s", cctx.String("enc")) } iv := types.BigFromBytes(dec) fmt.Println(iv.String()) return nil }, }