138 lines
6.6 KiB
JavaScript
138 lines
6.6 KiB
JavaScript
"use strict";
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (_) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.lookpath = void 0;
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var fs = __importStar(require("fs"));
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var path = __importStar(require("path"));
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var isWindows = /^win/i.test(process.platform);
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/**
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* Sometimes, people want to look for local executable files
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* which are specified with either relative or absolute file path.
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* @private
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* @param cmd
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* @return {string} An absolute path of given command, or undefined.
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*/
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var isFilepath = function (cmd) {
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return cmd.includes(path.sep) ? path.resolve(cmd) : undefined;
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};
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/**
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* Just promisifies "fs.access"
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* @private
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* @param {string} fpath An absolute file path with an applicable extension appended.
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* @return {Promise<string>} Resolves absolute path or empty string.
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*/
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var access = function (fpath) {
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return new Promise(function (resolve) { return fs.access(fpath, fs.constants.X_OK, function (err) { return resolve(err ? undefined : fpath); }); });
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};
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/**
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* Resolves if the given file is executable or not, regarding "PATHEXT" to be applied.
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* @private
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* @param {string} abspath A file path to be checked.
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* @return {Promise<string>} Resolves the absolute file path just checked, or undefined.
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*/
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var isExecutable = function (abspath) { return __awaiter(void 0, void 0, void 0, function () {
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var exts, bins;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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exts = (process.env.PATHEXT || '').split(path.delimiter).concat('');
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return [4 /*yield*/, Promise.all(exts.map(function (ext) { return access(abspath + ext); }))];
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case 1:
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bins = _a.sent();
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return [2 /*return*/, bins.find(function (bin) { return !!bin; })];
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}
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});
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}); };
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/**
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* Returns a list of directories on which the target command should be looked for.
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* @private
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* @param {string[]} opt.include Will be added to "PATH" env.
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* @param {string[]} opt.exclude Will be filtered from "PATH" env.
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* @return {string[]} Directories to dig into.
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*/
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var getDirsToWalkThrough = function (opt) {
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var envname = isWindows ? 'Path' : 'PATH';
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return (process.env[envname] || '').split(path.delimiter).concat(opt.include || []).filter(function (p) { return !(opt.exclude || []).includes(p); });
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};
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/**
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* Returns async promise with absolute file path of given command,
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* and resolves with undefined if the command not found.
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* @param {string} command Command name to look for.
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* @param {LookPathOption} opt Options for lookpath.
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* @return {Promise<string|undefined>} Resolves absolute file path, or undefined if not found.
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*/
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function lookpath(command, opt) {
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if (opt === void 0) { opt = {}; }
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return __awaiter(this, void 0, void 0, function () {
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var directpath, dirs, bins;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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directpath = isFilepath(command);
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if (directpath)
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return [2 /*return*/, isExecutable(directpath)];
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dirs = getDirsToWalkThrough(opt);
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return [4 /*yield*/, Promise.all(dirs.map(function (dir) { return isExecutable(path.join(dir, command)); }))];
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case 1:
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bins = _a.sent();
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return [2 /*return*/, bins.find(function (bin) { return !!bin; })];
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}
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});
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});
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}
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exports.lookpath = lookpath;
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