forked from wealdtech/ethereal
/
token.go
66 lines (56 loc) · 1.93 KB
/
token.go
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// Copyright © 2017 Weald Technology Trading
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"strings"
"github.com/ethereum/go-ethereum/common"
"github.com/spf13/cobra"
"github.com/wealdtech/ethereal/ens"
"github.com/wealdtech/ethereal/util/contracts"
)
var tokenStr string
// tokenCmd represents the token command
var tokenCmd = &cobra.Command{
Use: "token",
Short: "Manage tokens",
Long: `Obtain information, balances and transfer tokens between addresses.`,
}
var unknownAddress = common.HexToAddress("00")
func tokenContractAddress(input string) (address common.Address, err error) {
// Guess 1 - might be an ENS name or a hex string
address, err = ens.Resolve(client, input)
if (address == unknownAddress || err != nil) && !strings.HasSuffix(input, ".eth") {
// Guess 2 - try {input}.thetoken.eth
address, err = ens.Resolve(client, input+".thetoken.eth")
if err != nil {
// Give up
err = fmt.Errorf("Unknown token %s", input)
}
}
return
}
// Obtain the token contract given a string
func tokenContract(input string) (contract *contracts.ERC20, err error) {
address, err := tokenContractAddress(input)
if err == nil {
contract, err = contracts.NewERC20(address, client)
}
return
}
func init() {
RootCmd.AddCommand(tokenCmd)
}
func tokenFlags(cmd *cobra.Command) {
cmd.Flags().StringVar(&tokenStr, "token", "", "Name (resolved as <name>.thetoken.eth) or address of the token contract")
}