| // Copyright 2022 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| |
| import { exec, ExecException } from 'child_process'; |
| import fs from 'fs'; |
| import path from 'path'; |
| import generateTemplate from './codegen/template_replacement'; |
| import * as argModule from 'arg'; |
| const arg = argModule.default; |
| |
| const googProtobufPath = require.resolve('google-protobuf'); |
| const googProtobufModule = fs.readFileSync(googProtobufPath, 'utf-8'); |
| |
| const args = arg({ |
| // Types |
| '--proto': [String], |
| '--out': String, |
| |
| // Aliases |
| '-p': '--proto', |
| }); |
| |
| const protos = args['--proto']; |
| const outDir = args['--out'] || 'protos'; |
| |
| fs.mkdirSync(outDir, { recursive: true }); |
| |
| const run = function (executable: string, args: string[]) { |
| return new Promise<void>((resolve) => { |
| exec( |
| `${executable} ${args.join(' ')}`, |
| { cwd: process.cwd() }, |
| (error: ExecException | null, stdout: string | Buffer) => { |
| if (error) { |
| throw error; |
| } |
| |
| console.log(stdout); |
| resolve(); |
| }, |
| ); |
| }); |
| }; |
| |
| const protoc = async function (protos: string[], outDir: string) { |
| const PROTOC_GEN_TS_PATH = path.resolve( |
| path.dirname(require.resolve('ts-protoc-gen/generate.js')), |
| '..', |
| '.bin', |
| 'protoc-gen-ts', |
| ); |
| |
| await run('protoc', [ |
| `--plugin="protoc-gen-ts=${PROTOC_GEN_TS_PATH}"`, |
| `--descriptor_set_out=${outDir}/descriptor.bin`, |
| `--js_out=import_style=commonjs,binary:${outDir}`, |
| `--ts_out=${outDir}`, |
| `--proto_path=${process.cwd()}`, |
| ...protos, |
| ]); |
| |
| // ES6 workaround: Replace google-protobuf imports with entire library. |
| protos.forEach((protoPath) => { |
| const outPath = path.join(outDir, protoPath.replace('.proto', '_pb.js')); |
| |
| if (fs.existsSync(outPath)) { |
| let data = fs.readFileSync(outPath, 'utf8'); |
| data = data.replace( |
| "var jspb = require('google-protobuf');", |
| googProtobufModule, |
| ); |
| data = data.replace('var goog = jspb;', ''); |
| fs.writeFileSync(outPath, data); |
| } |
| }); |
| }; |
| |
| const makeProtoCollection = function ( |
| descriptorBinPath: string, |
| protoPath: string, |
| importPath: string, |
| ) { |
| const outputCollectionName = |
| path.extname(require.resolve('./ts_proto_collection.template')) === '.ts' |
| ? 'collection.ts' |
| : 'collection.js'; |
| generateTemplate( |
| `${protoPath}/${outputCollectionName}`, |
| descriptorBinPath, |
| require.resolve('./ts_proto_collection.template'), |
| importPath, |
| ); |
| }; |
| |
| protoc(protos, outDir).then(() => { |
| makeProtoCollection( |
| path.join(outDir, 'descriptor.bin'), |
| outDir, |
| 'pigweedjs/protos', |
| ); |
| }); |