126 lines
4.0 KiB
Go
126 lines
4.0 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/common/compiler"
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)
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var (
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abiFlag = flag.String("abi", "", "Path to the Ethereum contract ABI json to bind")
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binFlag = flag.String("bin", "", "Path to the Ethereum contract bytecode (generate deploy method)")
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typFlag = flag.String("type", "", "Go struct name for the binding (default = package name)")
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solFlag = flag.String("sol", "", "Path to the Ethereum contract Solidity source to build and bind")
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solcFlag = flag.String("solc", "solc", "Solidity compiler to use if source builds are requested")
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excFlag = flag.String("exc", "", "Comma separated types to exclude from binding")
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pkgFlag = flag.String("pkg", "", "Go package name to generate the binding into")
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outFlag = flag.String("out", "", "Output file for the generated binding (default = stdout)")
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)
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func main() {
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// Parse and ensure all needed inputs are specified
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flag.Parse()
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if *abiFlag == "" && *solFlag == "" {
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fmt.Printf("No contract ABI (--abi) or Solidity source (--sol) specified\n")
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os.Exit(-1)
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} else if (*abiFlag != "" || *binFlag != "" || *typFlag != "") && *solFlag != "" {
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fmt.Printf("Contract ABI (--abi), bytecode (--bin) and type (--type) flags are mutually exclusive with the Solidity source (--sol) flag\n")
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os.Exit(-1)
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}
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if *pkgFlag == "" {
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fmt.Printf("No destination Go package specified (--pkg)\n")
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os.Exit(-1)
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}
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// If the entire solidity code was specified, build and bind based on that
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var (
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abis []string
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bins []string
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types []string
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)
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if *solFlag != "" {
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// Generate the list of types to exclude from binding
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exclude := make(map[string]bool)
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for _, kind := range strings.Split(*excFlag, ",") {
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exclude[strings.ToLower(kind)] = true
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}
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contracts, err := compiler.CompileSolidity(*solcFlag, *solFlag)
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if err != nil {
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fmt.Printf("Failed to build Solidity contract: %v\n", err)
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os.Exit(-1)
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}
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// Gather all non-excluded contract for binding
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for name, contract := range contracts {
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if exclude[strings.ToLower(name)] {
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continue
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}
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abi, _ := json.Marshal(contract.Info.AbiDefinition) // Flatten the compiler parse
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abis = append(abis, string(abi))
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bins = append(bins, contract.Code)
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types = append(types, name)
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}
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} else {
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// Otherwise load up the ABI, optional bytecode and type name from the parameters
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abi, err := ioutil.ReadFile(*abiFlag)
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if err != nil {
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fmt.Printf("Failed to read input ABI: %v\n", err)
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os.Exit(-1)
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}
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abis = append(abis, string(abi))
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bin := []byte{}
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if *binFlag != "" {
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if bin, err = ioutil.ReadFile(*binFlag); err != nil {
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fmt.Printf("Failed to read input bytecode: %v\n", err)
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os.Exit(-1)
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}
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}
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bins = append(bins, string(bin))
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kind := *typFlag
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if kind == "" {
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kind = *pkgFlag
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}
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types = append(types, kind)
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}
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// Generate the contract binding
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code, err := bind.Bind(types, abis, bins, *pkgFlag)
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if err != nil {
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fmt.Printf("Failed to generate ABI binding: %v\n", err)
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os.Exit(-1)
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}
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// Either flush it out to a file or display on the standard output
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if *outFlag == "" {
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fmt.Printf("%s\n", code)
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return
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}
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if err := ioutil.WriteFile(*outFlag, []byte(code), 0600); err != nil {
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fmt.Printf("Failed to write ABI binding: %v\n", err)
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os.Exit(-1)
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}
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}
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