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/*
* 公共方法
*
*/
//时间
export function formatDate(date, fmt) {
if (/(y+)/.test(fmt)) {
fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length));
}
let o = {
'M+': date.getMonth() + 1,
'd+': date.getDate(),
'h+': date.getHours(),
'm+': date.getMinutes(),
's+': date.getSeconds()
};
for (let k in o) {
if (new RegExp(`(${k})`).test(fmt)) {
let str = o[k] + '';
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? str : padLeftZero(str));
}
}
return fmt;
};
function padLeftZero(str) {
return ('00' + str).substr(str.length);
};
export function getAgeByIdcard(identityCard) {
let len = (identityCard + "").length;
if (len == 0) {
return 0;
} else {
if ((len != 15) && (len != 18)) //身份证号码只能为15位或18位其它不合法
{
return 0;
}
}
let strBirthday = "";
if (len == 18) //处理18位的身份证号码从号码中得到生日和性别代码
{
strBirthday = identityCard.substr(6, 4) + "/" + identityCard.substr(10, 2) + "/" + identityCard.substr(12, 2);
}
if (len == 15) {
strBirthday = "19" + identityCard.substr(6, 2) + "/" + identityCard.substr(8, 2) + "/" + identityCard.substr(10,
2);
}
//时间字符串里,必须是“/”
let birthDate = new Date(strBirthday);
let nowDateTime = new Date();
let age = nowDateTime.getFullYear() - birthDate.getFullYear();
//再考虑月、天的因素;.getMonth()获取的是从0开始的这里进行比较不需要加1
if (nowDateTime.getMonth() < birthDate.getMonth() || (nowDateTime.getMonth() == birthDate.getMonth() && nowDateTime
.getDate() < birthDate.getDate())) {
age--;
}
return age;
}
export function getSexByIdcard (idCard) {
let sexStr;
if (parseInt(idCard.slice(-2, -1)) % 2 == 1) {
sexStr = '男';
}
else {
sexStr = '女';
}
return sexStr;
}
export const base64ToFile = (dataurl, filename = 'file') => {
let arr = dataurl.split(',')
let mime = arr[0].match(/:(.*?);/)[1]
let suffix = mime.split('/')[1]
let bstr = atob(arr[1])
let n = bstr.length
let u8arr = new Uint8Array(n)
while (n--) {
u8arr[n] = bstr.charCodeAt(n)
}
return new File([u8arr], `${filename}.${suffix}`, {
type: mime
})
}
export const writeFile = (base64Str) => new Promise((resolve, reject) => {
// 后台返回的base64格式数据的回车换行换为空字符''
const base64Image = base64Str.split(',')[1].replace(/[\r\n]/g, '')
// 文件管理器
const fsm = uni.getFileSystemManager()
// 文件名
const FILE_BASE_NAME = 'tmp_base64src'
// 文件后缀
const format = 'png'
// 获取当前时间戳用于区分小程序码防止多次写进的小程序码图片都一样建议通过不同的列表ID来区分不同的小程序码
const timestamp = (new Date()).getTime()
// base转二进制
const buffer = uni.base64ToArrayBuffer(base64Image)
// 文件名
const filePath = `${wx.env.USER_DATA_PATH}/${timestamp}share.${format}`
// 写文件
fsm.writeFile({
filePath,
data: buffer,
encoding: 'binary',
success () {
// 读取图片
uni.getImageInfo({
src: filePath,
success (res) {
const img = res.path
// 把需要画出来的图片的临时url暴露出去
resolve(img)
reject()
},
fail (e) {
console.log('读取图片报错')
console.log(e)
},
error (res) {
console.log(res)
}
})
},
fail (e) {
console.log(e)
}
})
}).catch((e) => {
console.log(e)
})
// 删除存储的垃圾数据
export const removeSave = () => new Promise((resolve) => {
// 文件管理器
const fsm = uni.getFileSystemManager()
// 获取文件列表
fsm.readdir({
dirPath: wx.env.USER_DATA_PATH, // 当时写入的文件夹
success (res) {
res.files.forEach((el) => { // 遍历文件列表里的数据
// 删除存储的垃圾数据
if (el !== 'miniprogramLog') { // 过滤掉miniprogramLog
fsm.unlink({
filePath: `${wx.env.USER_DATA_PATH}/${el}`, // 文件夹也要加上,如果直接文件名会无法找到这个文件
fail (e) {
console.log('readdir文件删除失败', e)
}
})
}
})
resolve()
}
})
})