package main import ( "encoding/base64" "encoding/hex" "fmt" "github.com/filecoin-project/go-state-types/abi" "github.com/ipfs/go-cid" mh "github.com/multiformats/go-multihash" "github.com/urfave/cli/v2" "golang.org/x/xerrors" ) var cidCmd = &cli.Command{ Name: "cid", Usage: "Cid command", Subcommands: cli.Commands{ cidIdCmd, }, } var cidIdCmd = &cli.Command{ Name: "id", Usage: "Create identity CID from hex or base64 data", ArgsUsage: "[data]", Flags: []cli.Flag{ &cli.StringFlag{ Name: "encoding", Value: "base64", Usage: "specify input encoding to parse", }, &cli.StringFlag{ Name: "codec", Value: "id", Usage: "multicodec-packed content types: abi or id", }, }, Action: func(cctx *cli.Context) error { if !cctx.Args().Present() { return fmt.Errorf("must specify data") } var dec []byte switch cctx.String("encoding") { case "base64": data, err := base64.StdEncoding.DecodeString(cctx.Args().First()) if err != nil { return xerrors.Errorf("decoding base64 value: %w", err) } dec = data case "hex": data, err := hex.DecodeString(cctx.Args().First()) if err != nil { return xerrors.Errorf("decoding hex value: %w", err) } dec = data default: return xerrors.Errorf("unrecognized encoding: %s", cctx.String("encoding")) } switch cctx.String("codec") { case "abi": aCid, err := abi.CidBuilder.Sum(dec) if err != nil { return xerrors.Errorf("cidBuilder abi: %w", err) } fmt.Println(aCid) case "id": builder := cid.V1Builder{Codec: cid.Raw, MhType: mh.IDENTITY} rCid, err := builder.Sum(dec) if err != nil { return xerrors.Errorf("cidBuilder raw: %w", err) } fmt.Println(rCid) default: return xerrors.Errorf("unrecognized codec: %s", cctx.String("codec")) } return nil }, }