Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x | import SparkMD5 from 'spark-md5'
import { Progress, LocalInfo } from './upload'
import { urlSafeBase64Decode } from './base64'
export const MB = 1024 ** 2
// 文件分块
export function getChunks(file: File, blockSize: number): Blob[] {
let chunkByteSize = blockSize * MB // 转换为字节
// 如果 chunkByteSize 比文件大，则直接取文件的大小
if (chunkByteSize > file.size) {
chunkByteSize = file.size
} else {
// 因为最多 10000 chunk，所以如果 chunkSize 不符合则把每片 chunk 大小扩大两倍
while (file.size > chunkByteSize * 10000) {
chunkByteSize *= 2
}
}
const chunks: Blob[] = []
const count = Math.ceil(file.size / chunkByteSize)
for (let i = 0; i < count; i++) {
const chunk = file.slice(
chunkByteSize * i,
i === count - 1 ? file.size : chunkByteSize * (i + 1)
)
chunks.push(chunk)
}
return chunks
}
export function isMetaDataValid(params: { [key: string]: string }) {
return Object.keys(params).every(key => key.indexOf('x-qn-meta-') === 0)
}
export function isCustomVarsValid(params: { [key: string]: string }) {
return Object.keys(params).every(key => key.indexOf('x:') === 0)
}
export function sum(list: number[]) {
return list.reduce((data, loaded) => data + loaded, 0)
}
export function setLocalFileInfo(localKey: string, info: LocalInfo) {
try {
localStorage.setItem(localKey, JSON.stringify(info))
} catch (err) {
throw new Error(`setLocalFileInfo failed: ${localKey}`)
}
}
export function createLocalKey(name: string, key: string | null | undefined, size: number): string {
const localKey = key == null ? '_' : `_key_${key}_`
return `qiniu_js_sdk_upload_file_name_${name}${localKey}size_${size}`
}
export function removeLocalFileInfo(localKey: string) {
try {
localStorage.removeItem(localKey)
} catch (err) {
throw new Error(`removeLocalFileInfo failed. key: ${localKey}`)
}
}
export function getLocalFileInfo(localKey: string): LocalInfo | null {
let localInfoString: string | null = null
try { localInfoString = localStorage.getItem(localKey) }
catch { throw new Error(`getLocalFileInfo failed. key: ${localKey}`) }
if (localInfoString == null) {
return null
}
let localInfo: LocalInfo | null = null
try { localInfo = JSON.parse(localInfoString) }
catch {
// 本地信息已被破坏，直接删除
removeLocalFileInfo(localKey)
throw new Error(`getLocalFileInfo failed to parse. key: ${localKey}`)
}
return localInfo
}
export function getAuthHeaders(token: string) {
const auth = 'UpToken ' + token
return { Authorization: auth }
}
export function getHeadersForChunkUpload(token: string) {
const header = getAuthHeaders(token)
return {
'content-type': 'application/octet-stream',
...header
}
}
export function getHeadersForMkFile(token: string) {
const header = getAuthHeaders(token)
return {
'content-type': 'application/json',
...header
}
}
export function createXHR(): XMLHttpRequest {
if (window.XMLHttpRequest) {
return new XMLHttpRequest()
}
return window.ActiveXObject('Microsoft.XMLHTTP')
}
export async function computeMd5(data: Blob): Promise<string> {
const buffer = await readAsArrayBuffer(data)
const spark = new SparkMD5.ArrayBuffer()
spark.append(buffer)
return spark.end()
}
export function readAsArrayBuffer(data: Blob): Promise<ArrayBuffer> {
return new Promise((resolve, reject) => {
const reader = new FileReader()
// evt 类型目前存在问题 https://github.com/Microsoft/TypeScript/issues/4163
reader.onload = (evt: ProgressEvent<FileReader>) => {
if (evt.target) {
const body = evt.target.result
resolve(body as ArrayBuffer)
} else {
reject(new Error('progress event target is undefined'))
}
}
reader.onerror = () => {
reject(new Error('fileReader read failed'))
}
reader.readAsArrayBuffer(data)
})
}
export interface ResponseSuccess<T> {
data: T
reqId: string
}
export interface ResponseError {
code: number /** 请求错误状态码，只有在 err.isRequestError 为 true 的时候才有效。可查阅码值对应说明。*/
message: string /** 错误信息，包含错误码，当后端返回提示信息时也会有相应的错误信息。 */
isRequestError: true | undefined /** 用于区分是否 xhr 请求错误当 xhr 请求出现错误并且后端通过 HTTP 状态码返回了错误信息时，该参数为 true否则为 undefined 。 */
reqId: string /** xhr请求错误的 X-Reqid。 */
}
export type CustomError = ResponseError | Error | any
export type XHRHandler = (xhr: XMLHttpRequest) => void
export interface RequestOptions {
method: string
onProgress?: (data: Progress) => void
onCreate?: XHRHandler
body?: BodyInit | null
headers?: { [key: string]: string }
}
export type Response<T> = Promise<ResponseSuccess<T>>
export function request<T>(url: string, options: RequestOptions): Response<T> {
return new Promise((resolve, reject) => {
const xhr = createXHR()
xhr.open(options.method, url)
if (options.onCreate) {
options.onCreate(xhr)
}
if (options.headers) {
const headers = options.headers
Object.keys(headers).forEach(k => {
xhr.setRequestHeader(k, headers[k])
})
}
xhr.upload.addEventListener('progress', (evt: ProgressEvent) => {
if (evt.lengthComputable && options.onProgress) {
options.onProgress({
loaded: evt.loaded,
total: evt.total
})
}
})
xhr.onreadystatechange = () => {
const responseText = xhr.responseText
if (xhr.readyState !== 4) {
return
}
const reqId = xhr.getResponseHeader('x-reqId') || ''
if (xhr.status !== 200) {
let message = `xhr request failed, code: ${xhr.status}`
if (responseText) {
message += ` response: ${responseText}`
}
reject({
code: xhr.status,
message,
reqId,
isRequestError: true
})
return
}
try {
resolve({
data: JSON.parse(responseText),
reqId
})
} catch (err) {
reject(err)
}
}
xhr.send(options.body)
})
}
export function getPortFromUrl(url: string) {
if (url && url.match) {
let groups = url.match(/(^https?)/)
if (!groups) {
return ''
}
const type = groups[1]
groups = url.match(/^https?:\/\/([^:^/]*):(\d*)/)
if (groups) {
return groups[2]
}
if (type === 'http') {
return '80'
}
return '443'
}
return ''
}
export function getDomainFromUrl(url: string): string {
if (url && url.match) {
const groups = url.match(/^https?:\/\/([^:^/]*)/)
return groups ? groups[1] : ''
}
return ''
}
interface PutPolicy {
ak: string
scope: string
}
export function getPutPolicy(token: string) {
const segments = token.split(':')
// token 构造的差异参考：https://github.com/qbox/product/blob/master/kodo/auths/UpToken.md#admin-uptoken-authorization
const ak = segments.length > 3 ? segments[1] : segments[0]
const putPolicy: PutPolicy = JSON.parse(urlSafeBase64Decode(segments[segments.length - 1]))
return {
ak,
bucket: putPolicy.scope.split(':')[0]
}
}
export function createObjectURL(file: File) {
const URL = window.URL || window.webkitURL || window.mozURL
return URL.createObjectURL(file)
}
export interface TransformValue {
width: number
height: number
matrix: [number, number, number, number, number, number]
}
export function getTransform(image: HTMLImageElement, orientation: number): TransformValue {
const { width, height } = image
switch (orientation) {
case 1:
// default
return {
width,
height,
matrix: [1, 0, 0, 1, 0, 0]
}
case 2:
// horizontal flip
return {
width,
height,
matrix: [-1, 0, 0, 1, width, 0]
}
case 3:
// 180° rotated
return {
width,
height,
matrix: [-1, 0, 0, -1, width, height]
}
case 4:
// vertical flip
return {
width,
height,
matrix: [1, 0, 0, -1, 0, height]
}
case 5:
// vertical flip + -90° rotated
return {
width: height,
height: width,
matrix: [0, 1, 1, 0, 0, 0]
}
case 6:
// -90° rotated
return {
width: height,
height: width,
matrix: [0, 1, -1, 0, height, 0]
}
case 7:
// horizontal flip + -90° rotate
return {
width: height,
height: width,
matrix: [0, -1, -1, 0, height, width]
}
case 8:
// 90° rotated
return {
width: height,
height: width,
matrix: [0, -1, 1, 0, 0, width]
}
default:
throw new Error(`orientation ${orientation} is unavailable`)
}
}
|