diff --git a/.gitignore b/.gitignore index 59fa716a4..0d730935c 100644 --- a/.gitignore +++ b/.gitignore @@ -11,6 +11,7 @@ dist/ *.js !gruntfile.js !js-libs/**/*.* +!fetch/**/*.* !apps/TelerikNEXT/lib/**/*.* CrossPlatformModules.sln.ide/ *.suo diff --git a/fetch/fetch.js b/fetch/fetch.js new file mode 100644 index 000000000..3b0ec8ce1 --- /dev/null +++ b/fetch/fetch.js @@ -0,0 +1,333 @@ +(function () { + 'use strict'; + + var self = exports; + + if (self.fetch) { + return + } + + function normalizeName(name) { + if (typeof name !== 'string') { + name = name.toString(); + } + if (/[^a-z0-9\-#$%&'*+.\^_`|~]/i.test(name)) { + throw new TypeError('Invalid character in header field name') + } + return name.toLowerCase() + } + + function normalizeValue(value) { + if (typeof value !== 'string') { + value = value.toString(); + } + return value + } + + function Headers(headers) { + this.map = {} + + if (headers instanceof Headers) { + headers.forEach(function (value, name) { + this.append(name, value) + }, this) + + } else if (headers) { + Object.getOwnPropertyNames(headers).forEach(function (name) { + this.append(name, headers[name]) + }, this) + } + } + + Headers.prototype.append = function (name, value) { + name = normalizeName(name) + value = normalizeValue(value) + var list = this.map[name] + if (!list) { + list = [] + this.map[name] = list + } + list.push(value) + } + + Headers.prototype['delete'] = function (name) { + delete this.map[normalizeName(name)] + } + + Headers.prototype.get = function (name) { + var values = this.map[normalizeName(name)] + return values ? values[0] : null + } + + Headers.prototype.getAll = function (name) { + return this.map[normalizeName(name)] || [] + } + + Headers.prototype.has = function (name) { + return this.map.hasOwnProperty(normalizeName(name)) + } + + Headers.prototype.set = function (name, value) { + this.map[normalizeName(name)] = [normalizeValue(value)] + } + + Headers.prototype.forEach = function (callback, thisArg) { + Object.getOwnPropertyNames(this.map).forEach(function (name) { + this.map[name].forEach(function (value) { + callback.call(thisArg, value, name, this) + }, this) + }, this) + } + + function consumed(body) { + if (body.bodyUsed) { + return Promise.reject(new TypeError('Already read')) + } + body.bodyUsed = true + } + + function fileReaderReady(reader) { + return new Promise(function (resolve, reject) { + reader.onload = function () { + resolve(reader.result) + } + reader.onerror = function () { + reject(reader.error) + } + }) + } + + function readBlobAsArrayBuffer(blob) { + var reader = new FileReader() + reader.readAsArrayBuffer(blob) + return fileReaderReady(reader) + } + + function readBlobAsText(blob) { + var reader = new FileReader() + reader.readAsText(blob) + return fileReaderReady(reader) + } + + var support = { + blob: 'FileReader' in self && 'Blob' in self && (function () { + try { + new Blob(); + return true + } catch (e) { + return false + } + })(), + formData: 'FormData' in self + } + + function Body() { + this.bodyUsed = false + + + this._initBody = function (body) { + this._bodyInit = body + if (typeof body === 'string') { + this._bodyText = body + } else if (support.blob && Blob.prototype.isPrototypeOf(body)) { + this._bodyBlob = body + } else if (support.formData && FormData.prototype.isPrototypeOf(body)) { + this._bodyFormData = body + } else if (!body) { + this._bodyText = '' + } else { + throw new Error('unsupported BodyInit type') + } + } + + if (support.blob) { + this.blob = function () { + var rejected = consumed(this) + if (rejected) { + return rejected + } + + if (this._bodyBlob) { + return Promise.resolve(this._bodyBlob) + } else if (this._bodyFormData) { + throw new Error('could not read FormData body as blob') + } else { + return Promise.resolve(new Blob([this._bodyText])) + } + } + + this.arrayBuffer = function () { + return this.blob().then(readBlobAsArrayBuffer) + } + + this.text = function () { + var rejected = consumed(this) + if (rejected) { + return rejected + } + + if (this._bodyBlob) { + return readBlobAsText(this._bodyBlob) + } else if (this._bodyFormData) { + throw new Error('could not read FormData body as text') + } else { + return Promise.resolve(this._bodyText) + } + } + } else { + this.text = function () { + var rejected = consumed(this) + return rejected ? rejected : Promise.resolve(this._bodyText) + } + } + + if (support.formData) { + this.formData = function () { + return this.text().then(decode) + } + } + + this.json = function () { + return this.text().then(JSON.parse) + } + + return this + } + + // HTTP methods whose capitalization should be normalized + var methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT'] + + function normalizeMethod(method) { + var upcased = method.toUpperCase() + return (methods.indexOf(upcased) > -1) ? upcased : method + } + + function Request(url, options) { + options = options || {} + this.url = url + + this.credentials = options.credentials || 'omit' + this.headers = new Headers(options.headers) + this.method = normalizeMethod(options.method || 'GET') + this.mode = options.mode || null + this.referrer = null + + if ((this.method === 'GET' || this.method === 'HEAD') && options.body) { + throw new TypeError('Body not allowed for GET or HEAD requests') + } + this._initBody(options.body) + } + + function decode(body) { + var form = new FormData() + body.trim().split('&').forEach(function (bytes) { + if (bytes) { + var split = bytes.split('=') + var name = split.shift().replace(/\+/g, ' ') + var value = split.join('=').replace(/\+/g, ' ') + form.append(decodeURIComponent(name), decodeURIComponent(value)) + } + }) + return form + } + + function headers(xhr) { + var head = new Headers() + var pairs = xhr.getAllResponseHeaders().trim().split('\n') + pairs.forEach(function (header) { + var split = header.trim().split(':') + var key = split.shift().trim() + var value = split.join(':').trim() + head.append(key, value) + }) + return head + } + + Body.call(Request.prototype) + + function Response(bodyInit, options) { + if (!options) { + options = {} + } + + this._initBody(bodyInit) + this.type = 'default' + this.url = null + this.status = options.status + this.ok = this.status >= 200 && this.status < 300 + this.statusText = options.statusText + this.headers = options.headers instanceof Headers ? options.headers : new Headers(options.headers) + this.url = options.url || '' + } + + Body.call(Response.prototype) + + self.Headers = Headers; + self.Request = Request; + self.Response = Response; + + self.fetch = function (input, init) { + // TODO: Request constructor should accept input, init + var request + if (Request.prototype.isPrototypeOf(input) && !init) { + request = input + } else { + request = new Request(input, init) + } + + return new Promise(function (resolve, reject) { + var xhr = new XMLHttpRequest() + + function responseURL() { + if ('responseURL' in xhr) { + return xhr.responseURL + } + + // Avoid security warnings on getResponseHeader when not allowed by CORS + if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) { + return xhr.getResponseHeader('X-Request-URL') + } + + return; + } + + xhr.onload = function () { + var status = (xhr.status === 1223) ? 204 : xhr.status + if (status < 100 || status > 599) { + reject(new TypeError('Network request failed')) + return + } + var options = { + status: status, + statusText: xhr.statusText, + headers: headers(xhr), + url: responseURL() + } + //var body = 'response' in xhr ? xhr.response : xhr.responseText; + resolve(new Response(xhr.responseText, options)) + } + + xhr.onerror = function () { + reject(new TypeError('Network request failed')) + } + + xhr.open(request.method, request.url, true) + + if (request.credentials === 'include') { + xhr.withCredentials = true + } + + if ('responseType' in xhr && support.blob) { + xhr.responseType = 'blob' + } + + request.headers.forEach(function (value, name) { + xhr.setRequestHeader(name, value) + }) + + xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit) + }) + } + self.fetch.polyfill = true + +})(); \ No newline at end of file