@anzp/azure-function-multipart
Version:
Module to parse multipart/form-data on Azure Functions.
133 lines • 7.22 kB
JavaScript
;
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 });
var busboy_1 = __importDefault(require("busboy"));
function parseMultipartFormData(request, options) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, reject) {
try {
var fields_1 = [];
var files_1 = [];
var busboy = void 0;
if (options) {
busboy = (0, busboy_1.default)(__assign({ headers: request.headers }, options));
}
else {
busboy = (0, busboy_1.default)({
headers: request.headers,
});
}
busboy.on("file", function (name, stream, _a) {
var filename = _a.filename, encoding = _a.encoding, mimeType = _a.mimeType;
var arrayBuffer = [];
stream.on("data", function (data) {
arrayBuffer.push(data);
});
stream.on("end", function () {
var bufferFile = Buffer.concat(arrayBuffer);
files_1.push(new Promise(function (resolve) {
resolve({
name: name,
bufferFile: bufferFile,
filename: filename,
encoding: encoding,
mimeType: mimeType,
});
}));
});
});
busboy.on("field", function (name, value, _a) {
var nameTruncated = _a.nameTruncated, valueTruncated = _a.valueTruncated, encoding = _a.encoding, mimeType = _a.mimeType;
fields_1.push(new Promise(function (resolve) {
resolve({
name: name,
value: value,
nameTruncated: nameTruncated,
valueTruncated: valueTruncated,
encoding: encoding,
mimeType: mimeType,
});
}));
});
busboy.on("finish", function () {
return __awaiter(this, void 0, void 0, function () {
var _a;
var _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
_a = resolve;
_b = {};
return [4 /*yield*/, Promise.all(fields_1)];
case 1:
_b.fields = _c.sent();
return [4 /*yield*/, Promise.all(files_1)];
case 2:
_a.apply(void 0, [(_b.files = _c.sent(),
_b)]);
return [2 /*return*/];
}
});
});
});
busboy.end(request.body);
}
catch (error) {
reject(error);
}
})];
});
});
}
exports.default = parseMultipartFormData;
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