sb-scandir
Version:
File scanning module for Node.js
174 lines (173 loc) • 8.62 kB
JavaScript
;
/* @flow */
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
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;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultFilesystem = void 0;
var fs_1 = __importDefault(require("fs"));
var path_1 = __importDefault(require("path"));
var assert_1 = __importDefault(require("assert"));
var sb_promise_queue_1 = require("sb-promise-queue");
exports.defaultFilesystem = {
join: function (pathA, pathB) {
return path_1.default.join(pathA, pathB);
},
basename: function (path) {
return path_1.default.basename(path);
},
stat: function (path) {
return new Promise(function (resolve, reject) {
fs_1.default.stat(path, function (err, res) {
if (err) {
reject(err);
}
else {
resolve(res);
}
});
});
},
readdir: function (path) {
return new Promise(function (resolve, reject) {
fs_1.default.readdir(path, function (err, res) {
if (err) {
reject(err);
}
else {
resolve(res);
}
});
});
},
};
function scanDirectoryInternal(_a) {
var path = _a.path, recursive = _a.recursive, validate = _a.validate, result = _a.result, fileSystem = _a.fileSystem, queue = _a.queue, reject = _a.reject;
return __awaiter(this, void 0, void 0, function () {
var itemStat, contents;
return __generator(this, function (_b) {
switch (_b.label) {
case 0: return [4 /*yield*/, fileSystem.stat(path)];
case 1:
itemStat = _b.sent();
if (itemStat.isFile()) {
result.files.push(path);
}
else if (itemStat.isDirectory()) {
result.directories.push(path);
}
if (!itemStat.isDirectory() || recursive === 'none') {
return [2 /*return*/];
}
return [4 /*yield*/, fileSystem.readdir(path)];
case 2:
contents = _b.sent();
contents.forEach(function (item) {
var itemPath = fileSystem.join(path, item);
if (!validate(itemPath)) {
return;
}
queue
.add(function () {
return scanDirectoryInternal({
path: itemPath,
recursive: recursive === 'shallow' ? 'none' : 'deep',
validate: validate,
result: result,
fileSystem: fileSystem,
queue: queue,
reject: reject,
});
})
.catch(reject);
});
return [2 /*return*/];
}
});
});
}
function scanDirectory(path, _a) {
var _b = _a === void 0 ? {} : _a, _c = _b.recursive, recursive = _c === void 0 ? true : _c, _d = _b.validate, validate = _d === void 0 ? null : _d, _e = _b.concurrency, concurrency = _e === void 0 ? Infinity : _e, _f = _b.fileSystem, fileSystem = _f === void 0 ? exports.defaultFilesystem : _f;
return __awaiter(this, void 0, void 0, function () {
var queue, result, mergedFileSystem;
return __generator(this, function (_g) {
switch (_g.label) {
case 0:
assert_1.default(path && typeof path === 'string', 'path must be a valid string');
assert_1.default(typeof recursive === 'boolean', 'options.recursive must be a valid boolean');
assert_1.default(validate === null || typeof validate === 'function', 'options.validate must be a valid function');
assert_1.default(typeof concurrency === 'number', 'options.concurrency must be a valid number');
assert_1.default(fileSystem !== null && typeof fileSystem === 'object', 'options.fileSystem must be a valid object');
queue = new sb_promise_queue_1.PromiseQueue({
concurrency: concurrency,
});
result = { files: [], directories: [] };
mergedFileSystem = __assign(__assign({}, exports.defaultFilesystem), fileSystem);
return [4 /*yield*/, new Promise(function (resolve, reject) {
scanDirectoryInternal({
path: path,
recursive: recursive ? 'deep' : 'shallow',
validate: validate != null ? validate : function (item) { return mergedFileSystem.basename(item).slice(0, 1) !== '.'; },
result: result,
fileSystem: mergedFileSystem,
queue: queue,
reject: reject,
})
.then(function () { return queue.waitTillIdle(); })
.then(resolve, reject);
})];
case 1:
_g.sent();
return [2 /*return*/, result];
}
});
});
}
exports.default = scanDirectory;