56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
package main
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import (
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"encoding/base64"
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"encoding/hex"
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"fmt"
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commcid "github.com/filecoin-project/go-fil-commcid"
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"github.com/urfave/cli/v2"
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"golang.org/x/xerrors"
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)
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var commpToCidCmd = &cli.Command{
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Name: "commp-to-cid",
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Usage: "Convert commP to Cid",
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Description: "Convert a raw commP to a piece-Cid",
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ArgsUsage: "[data]",
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Flags: []cli.Flag{
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&cli.StringFlag{
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Name: "encoding",
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Value: "base64",
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Usage: "specify input encoding to parse",
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},
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},
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Action: func(cctx *cli.Context) error {
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if !cctx.Args().Present() {
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return fmt.Errorf("must specify commP to convert")
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}
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var dec []byte
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switch cctx.String("encoding") {
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case "base64":
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data, err := base64.StdEncoding.DecodeString(cctx.Args().First())
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if err != nil {
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return xerrors.Errorf("decoding base64 value: %w", err)
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}
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dec = data
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case "hex":
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data, err := hex.DecodeString(cctx.Args().First())
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if err != nil {
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return xerrors.Errorf("decoding hex value: %w", err)
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}
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dec = data
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default:
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return xerrors.Errorf("unrecognized encoding: %s", cctx.String("encoding"))
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}
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cid, err := commcid.PieceCommitmentV1ToCID(dec)
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if err != nil {
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return err
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}
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fmt.Println(cid)
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return nil
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},
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}
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