export const networkReg = /^(http|\/\/)/;
|
export const isBase64 = (path) => /^data:image\/(\w+);base64/.test(path);
|
export function sleep(delay) {
|
return new Promise(resolve => setTimeout(resolve, delay))
|
}
|
const isDev = ['devtools'].includes(uni.getSystemInfoSync().platform)
|
// 缓存图片
|
let cache = {}
|
export function isNumber(value) {
|
return /^-?\d+(\.\d+)?$/.test(value);
|
}
|
export function toPx(value, baseSize, isDecimal = false) {
|
// 如果是数字
|
if (typeof value === 'number') {
|
return value
|
}
|
// 如果是字符串数字
|
if (isNumber(value)) {
|
return value * 1
|
}
|
// 如果有单位
|
if (typeof value === 'string') {
|
const reg = /^-?([0-9]+)?([.]{1}[0-9]+){0,1}(em|rpx|px|%)$/g
|
const results = reg.exec(value);
|
if (!value || !results) {
|
return 0;
|
}
|
const unit = results[3];
|
value = parseFloat(value);
|
let res = 0;
|
if (unit === 'rpx') {
|
res = uni.upx2px(value);
|
} else if (unit === 'px') {
|
res = value * 1;
|
} else if (unit === '%') {
|
res = value * toPx(baseSize) / 100;
|
} else if (unit === 'em') {
|
res = value * toPx(baseSize || 14);
|
}
|
return isDecimal ? res.toFixed(2) * 1 : Math.round(res);
|
}
|
return 0
|
}
|
|
// 计算版本
|
export function compareVersion(v1, v2) {
|
v1 = v1.split('.')
|
v2 = v2.split('.')
|
const len = Math.max(v1.length, v2.length)
|
while (v1.length < len) {
|
v1.push('0')
|
}
|
while (v2.length < len) {
|
v2.push('0')
|
}
|
for (let i = 0; i < len; i++) {
|
const num1 = parseInt(v1[i], 10)
|
const num2 = parseInt(v2[i], 10)
|
|
if (num1 > num2) {
|
return 1
|
} else if (num1 < num2) {
|
return -1
|
}
|
}
|
return 0
|
}
|
// #ifdef MP
|
export const prefix = () => {
|
// #ifdef MP-TOUTIAO
|
return tt
|
// #endif
|
// #ifdef MP-WEIXIN
|
return wx
|
// #endif
|
// #ifdef MP-BAIDU
|
return swan
|
// #endif
|
// #ifdef MP-ALIPAY
|
return my
|
// #endif
|
// #ifdef MP-QQ
|
return qq
|
// #endif
|
// #ifdef MP-360
|
return qh
|
// #endif
|
}
|
// #endif
|
|
|
const base64ToArrayBuffer = (data) => {
|
// #ifndef MP-WEIXIN || APP-PLUS
|
/**
|
* Base64Binary.decode(base64_string);
|
* Base64Binary.decodeArrayBuffer(base64_string);
|
*/
|
const Base64Binary = {
|
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
|
/* will return a Uint8Array type */
|
decodeArrayBuffer(input) {
|
const bytes = (input.length / 4) * 3;
|
const ab = new ArrayBuffer(bytes);
|
this.decode(input, ab);
|
return ab;
|
},
|
removePaddingChars(input) {
|
const lkey = this._keyStr.indexOf(input.charAt(input.length - 1));
|
if (lkey == 64) {
|
return input.substring(0, input.length - 1);
|
}
|
return input;
|
},
|
decode(input, arrayBuffer) {
|
//get last chars to see if are valid
|
input = this.removePaddingChars(input);
|
input = this.removePaddingChars(input);
|
|
const bytes = parseInt((input.length / 4) * 3, 10);
|
|
let uarray;
|
let chr1, chr2, chr3;
|
let enc1, enc2, enc3, enc4;
|
let i = 0;
|
let j = 0;
|
|
if (arrayBuffer)
|
uarray = new Uint8Array(arrayBuffer);
|
else
|
uarray = new Uint8Array(bytes);
|
|
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
|
|
for (i = 0; i < bytes; i += 3) {
|
//get the 3 octects in 4 ascii chars
|
enc1 = this._keyStr.indexOf(input.charAt(j++));
|
enc2 = this._keyStr.indexOf(input.charAt(j++));
|
enc3 = this._keyStr.indexOf(input.charAt(j++));
|
enc4 = this._keyStr.indexOf(input.charAt(j++));
|
|
chr1 = (enc1 << 2) | (enc2 >> 4);
|
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
|
chr3 = ((enc3 & 3) << 6) | enc4;
|
|
uarray[i] = chr1;
|
if (enc3 != 64) uarray[i + 1] = chr2;
|
if (enc4 != 64) uarray[i + 2] = chr3;
|
}
|
return uarray;
|
}
|
}
|
return Base64Binary.decodeArrayBuffer(data)
|
// #endif
|
// #ifdef MP-WEIXIN || APP-PLUS
|
return uni.base64ToArrayBuffer(data)
|
// #endif
|
}
|
|
|
/**
|
* base64转路径
|
* @param {Object} base64
|
*/
|
export function base64ToPath(base64) {
|
const [, format] = /^data:image\/(\w+);base64,/.exec(base64) || [];
|
|
return new Promise((resolve, reject) => {
|
// #ifdef MP
|
const fs = uni.getFileSystemManager()
|
//自定义文件名
|
if (!format) {
|
reject(new Error('ERROR_BASE64SRC_PARSE'))
|
}
|
const time = new Date().getTime();
|
let pre = prefix()
|
const filePath = `${pre.env.USER_DATA_PATH}/${time}.${format}`
|
//let buffer = base64ToArrayBuffer(bodyData)
|
fs.writeFile({
|
filePath,
|
data: base64.split(',')[1], //base64.replace(/^data:\S+\/\S+;base64,/, ''),
|
encoding: 'base64',
|
// data: buffer,
|
// encoding: 'binary',
|
success() {
|
resolve(filePath)
|
},
|
fail(err) {
|
reject(err)
|
}
|
})
|
// #endif
|
|
// #ifdef H5
|
// mime类型
|
let mimeString = base64.split(',')[0].split(':')[1].split(';')[0];
|
//base64 解码
|
let byteString = atob(base64.split(',')[1]);
|
//创建缓冲数组
|
let arrayBuffer = new ArrayBuffer(byteString.length);
|
//创建视图
|
let intArray = new Uint8Array(arrayBuffer);
|
for (let i = 0; i < byteString.length; i++) {
|
intArray[i] = byteString.charCodeAt(i);
|
}
|
resolve(URL.createObjectURL(new Blob([intArray], {
|
type: mimeString
|
})))
|
// #endif
|
|
// #ifdef APP-PLUS
|
const bitmap = new plus.nativeObj.Bitmap('bitmap' + Date.now())
|
bitmap.loadBase64Data(base64, () => {
|
if (!format) {
|
reject(new Error('ERROR_BASE64SRC_PARSE'))
|
}
|
const time = new Date().getTime();
|
const filePath = `_doc/uniapp_temp/${time}.${format}`
|
bitmap.save(filePath, {},
|
() => {
|
bitmap.clear()
|
resolve(filePath)
|
},
|
(error) => {
|
bitmap.clear()
|
reject(error)
|
})
|
}, (error) => {
|
bitmap.clear()
|
reject(error)
|
})
|
// #endif
|
})
|
}
|
|
/**
|
* 路径转base64
|
* @param {Object} string
|
*/
|
export function pathToBase64(path) {
|
if (/^data:/.test(path)) return path
|
return new Promise((resolve, reject) => {
|
// #ifdef H5
|
let image = new Image();
|
image.setAttribute("crossOrigin", 'Anonymous');
|
image.onload = function() {
|
let canvas = document.createElement('canvas');
|
canvas.width = this.naturalWidth;
|
canvas.height = this.naturalHeight;
|
canvas.getContext('2d').drawImage(image, 0, 0);
|
let result = canvas.toDataURL('image/png')
|
resolve(result);
|
canvas.height = canvas.width = 0
|
}
|
image.src = path + '?v=' + Math.random()
|
image.onerror = (error) => {
|
reject(error);
|
};
|
// #endif
|
|
// #ifdef MP
|
if (uni.canIUse('getFileSystemManager')) {
|
uni.getFileSystemManager().readFile({
|
filePath: path,
|
encoding: 'base64',
|
success: (res) => {
|
resolve('data:image/png;base64,' + res.data)
|
},
|
fail: (error) => {
|
reject(error)
|
}
|
})
|
}
|
// #endif
|
|
// #ifdef APP-PLUS
|
plus.io.resolveLocalFileSystemURL(getLocalFilePath(path), (entry) => {
|
entry.file((file) => {
|
const fileReader = new plus.io.FileReader()
|
fileReader.onload = (data) => {
|
resolve(data.target.result)
|
}
|
fileReader.onerror = (error) => {
|
reject(error)
|
}
|
fileReader.readAsDataURL(file)
|
}, reject)
|
}, reject)
|
// #endif
|
})
|
}
|
|
|
|
export function getImageInfo(path, useCORS) {
|
return new Promise(async (resolve, reject) => {
|
let src = path
|
if (cache[path] && cache[path].errMsg) {
|
resolve(cache[path])
|
} else {
|
try {
|
// if (!isBase64 && PLATFORM == UNI_PLATFORM.PLUS && !/^\/?(static|_doc)\//.test(src)) {
|
// src = await downloadFile(path) as string
|
// } else
|
// #ifdef MP || APP-PLUS
|
if (isBase64(path)) {
|
src = await base64ToPath(path)
|
}
|
// #endif
|
// #ifdef H5
|
if(useCORS) {
|
src = await pathToBase64(path)
|
}
|
// #endif
|
|
} catch (error) {
|
reject({
|
...error,
|
src
|
})
|
}
|
uni.getImageInfo({
|
src,
|
success: (image) => {
|
const localReg = /^\.|^\/(?=[^\/])/;
|
// #ifdef MP-WEIXIN || MP-BAIDU || MP-QQ || MP-TOUTIAO
|
image.path = localReg.test(src) ? `/${image.path}` : image.path;
|
// #endif
|
// #ifdef H5
|
image.path = image.path.replace(/^\./, window.location.origin)
|
// #endif
|
|
if(this.canvas.createImage) {
|
const img = this.canvas.createImage()
|
img.src = image.path
|
img.onload = function() {
|
image.path = img
|
cache[path] = image
|
resolve(cache[path])
|
}
|
img.onerror = function(err) {
|
reject({err,path})
|
}
|
} else if (isDev) {
|
resolve(image)
|
} else {
|
cache[path] = image
|
resolve(cache[path])
|
}
|
},
|
fail(err) {
|
console.error({err, path})
|
reject({err,path})
|
}
|
})
|
}
|
})
|
}
|
|
export function downloadFile(url) {
|
if (!url) return Promise.reject({
|
err: 'no url'
|
})
|
return new Promise((resolve, reject) => {
|
if (cache[url]) {
|
return reject()
|
}
|
cache[url] = 1
|
uni.downloadFile({
|
url,
|
success(res) {
|
resolve(res)
|
},
|
fail(err) {
|
reject(err)
|
}
|
})
|
})
|
}
|
|
// #ifdef APP-PLUS
|
const getLocalFilePath = (path) => {
|
if (path.indexOf('_www') === 0 || path.indexOf('_doc') === 0 || path.indexOf('_documents') === 0 || path
|
.indexOf('_downloads') === 0) {
|
return path
|
}
|
if (path.indexOf('file://') === 0) {
|
return path
|
}
|
if (path.indexOf('/storage/emulated/0/') === 0) {
|
return path
|
}
|
if (path.indexOf('/') === 0) {
|
const localFilePath = plus.io.convertAbsoluteFileSystem(path)
|
if (localFilePath !== path) {
|
return localFilePath
|
} else {
|
path = path.substr(1)
|
}
|
}
|
return '_www/' + path
|
}
|
const getFile = (url) => {
|
return new Promise((resolve, rejcet) => {
|
plus.io.resolveLocalFileSystemURL(url, resolve, (err) => {
|
resolve(false)
|
})
|
})
|
}
|
const createFile = ({
|
fs,
|
url,
|
target,
|
name
|
}) => {
|
return new Promise((resolve, reject) => {
|
plus.io.resolveLocalFileSystemURL(url, res1 => {
|
fs.root.getDirectory(target, {
|
create: true
|
}, fileEntry => {
|
const success = () => {
|
res1.remove()
|
resolve()
|
}
|
getFile(target + name).then(res => {
|
if (res) {
|
res.remove((res2) => {
|
res1.moveTo(fileEntry, name, success, reject)
|
})
|
}
|
res1.moveTo(fileEntry, name, success, reject)
|
})
|
})
|
}, reject)
|
})
|
}
|
export function useNvue(target, version, timeout) {
|
return new Promise((resolve, reject) => {
|
plus.io.requestFileSystem(plus.io.PRIVATE_DOC, async (fs) => {
|
try {
|
cache['lime-painter'] = 0
|
let names = ['uni.webview.1.5.3.js', 'painter.js', 'index.html']
|
let urls = ['https://gitee.com/dcloud/uni-app/raw/dev/dist/',
|
'https://static-6d65bd90-8508-4d6c-abbc-a4ef5c8e49e7.bspapp.com/lime-painter/'
|
]
|
const oldVersion = plus.storage.getItem('lime-painter')
|
const isFile = await getFile(`${target}${names[1]}`)
|
if (isFile && oldVersion && compareVersion(oldVersion, version) >= 0) {
|
resolve()
|
} else {
|
for (var i = 0; i < names.length; i++) {
|
const name = names[i]
|
const file = await downloadFile(urls[i >= 1 ? 1 : 0] + name)
|
await createFile({
|
fs,
|
url: file.tempFilePath,
|
target,
|
name: name.includes('uni.webview') ? 'uni.webview.js' : name
|
})
|
}
|
plus.storage.setItem('lime-painter', version)
|
cache['lime-painter'] = version
|
resolve()
|
}
|
} catch (e) {
|
let index = parseInt(timeout / 20)
|
while (!cache['lime-painter'] && index) {
|
await sleep(20)
|
index--
|
}
|
if (cache['lime-painter']) {
|
resolve()
|
} else {
|
reject(e)
|
}
|
}
|
}, reject)
|
})
|
}
|
// #endif
|
