74 lines
1.8 KiB
JavaScript
74 lines
1.8 KiB
JavaScript
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// 消息类型
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const messageType = {
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config: 0, // 检查是否支持worker写文件
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writeFile: 1, // 写文件
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}
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const fs = worker.getFileSystemManager ? worker.getFileSystemManager() : null;
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const createSharedArrayBuffer = worker.createSharedArrayBuffer;
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function compareVersion(_v1, _v2) {
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return (
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_v1
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.split('.')
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.map((v) => v.padStart(2, '0'))
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.join('') >=
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_v2
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.split('.')
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.map((v) => v.padStart(2, '0'))
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.join('')
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);
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}
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worker.onMessage((res) => {
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const {type, payload} = res;
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if (type === messageType.writeFile) {
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const {filePath, data, isSharedBuffer} = payload
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let content = data
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if (isSharedBuffer) {
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content = data.buffer
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}
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fs.writeFile({
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filePath,
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data: content,
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success: () => {
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worker.postMessage({
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type: messageType.writeFile,
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payload: {
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isok: true,
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filePath,
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}
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})
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},
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fail: err => {
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worker.postMessage({
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type: messageType.writeFile,
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payload: {
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isok: false,
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filePath,
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err
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}
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})
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}
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})
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}
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if (type === messageType.config) {
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const {systemInfo} = payload
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const {platform, version} = systemInfo
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// 安卓才需要使用worker写文件
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const isAndroid = platform.toLocaleLowerCase() === 'android'
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// 8.0.18以下版本出现写文件报错
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const isClientValid = compareVersion(version, '8.0.18')
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worker.postMessage({
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type: messageType.config,
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payload: {
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supportWorkerFs: isAndroid && !!fs && isClientValid,
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supportSharedBuffer: isAndroid && !!createSharedArrayBuffer,
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}
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})
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}
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})
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