Initial commit of akmon project

uni_modules/lime-file-utils/utssdk/index.uts

@@ -0,0 +1,110 @@
+// @ts-nocheck
+// fileToBase64, fileToDataURL,dataURLToFile
+
+export function fileToBase64(filePath : string) {
+	return new Promise((resolve, reject)=>{
+		if(uni.canIUse('getFileSystemManager')){
+			uni.getFileSystemManager().readFile({
+				filePath: path,
+				encoding: 'base64',
+				success: (res) => {
+					resolve(res.data)
+				},
+				fail: (error) => {
+					console.error({ error, path })
+					reject(error)
+				}
+			})
+		} else {
+			reject('fileToBase64：环境不支持')
+		}
+	})
+	
+}
+export function fileToDataURL(filePath : string) {
+	let extension = path.substring(path.lastIndexOf('.') + 1);
+	const imageExtensions = ["jpg", "jpeg", "png", "gif", "bmp", "svg"];
+	const isImageFile = imageExtensions.includes(extension.toLowerCase());
+	let prefix = ''
+	if (isImageFile) {
+		prefix = 'image/';
+		if(extension == 'svg') {
+			extension += '+xml'
+		}
+	} else if (extension === 'pdf') {
+		prefix = 'application/pdf';
+	} else if (extension === 'txt') {
+		prefix = 'text/plain';
+	} else {
+		// 添加更多文件类型的判断
+		// 如果不是图片、PDF、文本等类型，可以设定默认的前缀或采取其他处理
+		prefix = 'application/octet-stream';
+	}
+	
+	return fileToBase64(filePath).then(res => `data:${prefix}${extension};base64,${res}`)
+}
+
+function getFileExtensionFromDataURL(dataURL : string) : string {
+	const commaIndex = dataURL.indexOf(",");
+	const mimeType = dataURL.substring(0, commaIndex).replace("data:", "").replace(";base64", "");
+	const mimeTypeParts = mimeType.split("/");
+	return mimeTypeParts[1];
+}
+
+function getPlatform():Uni {
+	// #ifdef MP-WEIXIN
+	return wx
+	// #endif
+	// #ifdef MP-BAIDU
+	return swan
+	// #endif
+	// #ifdef MP-ALIPAY
+	return my
+	// #endif
+	// #ifdef MP-JD
+	return jd
+	// #endif
+	// #ifdef MP-QQ
+	return qq
+	// #endif
+	// #ifdef MP-360
+	return qh
+	// #endif
+	// #ifdef MP-KUAISHOU
+	return ks
+	// #endif
+	// #ifdef MP-LARK||MP-TOUTIAO
+	return tt
+	// #endif
+	// #ifdef MP-DINGTALK
+	return dd
+	// #endif
+	// #ifdef QUICKAPP-WEBVIEW || QUICKAPP-WEBVIEW-UNION || QUICKAPP-WEBVIEW-HUAWEI
+	return qa
+	// #endif
+	return uni
+}
+
+export function dataURLToFile(dataURL : string, filename : NullableString = null) {
+
+	return new Promise((resolve, reject) => {
+		const name = filename ?? `${Date.now()}.${getFileExtensionFromDataURL(dataURL)}`;
+		const commaIndex = dataURL.indexOf(",");
+		const base64 = dataURL.substring(commaIndex + 1);
+		const platform = getPlatform()
+		const filePath = `${platform.env.USER_DATA_PATH}/${name}`;
+
+		fs.writeFile({
+			filePath,
+			data: base64,
+			encoding: 'base64',
+			success() {
+				resolve(filePath)
+			},
+			fail(err) {
+				reject(err)
+			}
+		})
+	})
+
+}