github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/cmd/evm/disasm.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package main
    19  
    20  import (
    21  	"errors"
    22  	"fmt"
    23  	"io/ioutil"
    24  	"strings"
    25  
    26  	"github.com/AigarNetwork/aigar/core/asm"
    27  	cli "gopkg.in/urfave/cli.v1"
    28  )
    29  
    30  var disasmCommand = cli.Command{
    31  	Action:    disasmCmd,
    32  	Name:      "disasm",
    33  	Usage:     "disassembles evm binary",
    34  	ArgsUsage: "<file>",
    35  }
    36  
    37  func disasmCmd(ctx *cli.Context) error {
    38  	if len(ctx.Args().First()) == 0 {
    39  		return errors.New("filename required")
    40  	}
    41  
    42  	fn := ctx.Args().First()
    43  	in, err := ioutil.ReadFile(fn)
    44  	if err != nil {
    45  		return err
    46  	}
    47  
    48  	code := strings.TrimSpace(string(in))
    49  	fmt.Printf("%v\n", code)
    50  	return asm.PrintDisassembled(code)
    51  }