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76 lines
1.9 KiB
76 lines
1.9 KiB
2 months ago
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// @ts-nocheck
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import {platform} from '../platform'
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/**
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* base64转路径
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* @param {Object} base64
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*/
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export function base64ToPath(base64: string, filename?: string):Promise<string> {
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const [, format] = /^data:image\/(\w+);base64,/.exec(base64) || [];
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console.log('format', format)
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return new Promise((resolve, reject) => {
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// #ifdef MP
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const fs = uni.getFileSystemManager()
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//自定义文件名
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if (!filename && !format) {
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reject(new Error('ERROR_BASE64SRC_PARSE'))
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}
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// const time = new Date().getTime();
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const name = filename || `${new Date().getTime()}.${format}`;
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let pre = platform()
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const filePath = `${pre.env.USER_DATA_PATH}/${name}`
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fs.writeFile({
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filePath,
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data: base64.split(',')[1],
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encoding: 'base64',
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success() {
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resolve(filePath)
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},
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fail(err) {
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console.error(err)
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reject(err)
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}
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})
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// #endif
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// #ifdef H5
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// mime类型
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let mimeString = base64.split(',')[0].split(':')[1].split(';')[0];
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//base64 解码
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let byteString = atob(base64.split(',')[1]);
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//创建缓冲数组
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let arrayBuffer = new ArrayBuffer(byteString.length);
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//创建视图
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let intArray = new Uint8Array(arrayBuffer);
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for (let i = 0; i < byteString.length; i++) {
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intArray[i] = byteString.charCodeAt(i);
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}
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resolve(URL.createObjectURL(new Blob([intArray], {
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type: mimeString
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})))
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// #endif
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// #ifdef APP-PLUS
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const bitmap = new plus.nativeObj.Bitmap('bitmap' + Date.now())
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bitmap.loadBase64Data(base64, () => {
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if (!filename && !format) {
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reject(new Error('ERROR_BASE64SRC_PARSE'))
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}
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// const time = new Date().getTime();
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const name = filename || `${new Date().getTime()}.${format}`;
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const filePath = `_doc/uniapp_temp/${name}`
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bitmap.save(filePath, {},
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() => {
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bitmap.clear()
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resolve(filePath)
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},
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(error) => {
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bitmap.clear()
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reject(error)
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})
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}, (error) => {
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bitmap.clear()
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reject(error)
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})
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// #endif
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})
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}
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