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bigint.go
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/
bigint.go
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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
},
}