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uni_modules/uni-file-picker/components/uni-file-picker/utils.js

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+/**
+ * 获取文件名和后缀
+ * @param {String} name
+ */
+export const get_file_ext = (name) => {
+	const last_len = name.lastIndexOf('.')
+	const len = name.length
+	return {
+		name: name.substring(0, last_len),
+		ext: name.substring(last_len + 1, len)
+	}
+}
+
+/**
+ * 获取扩展名
+ * @param {Array} fileExtname
+ */
+export const get_extname = (fileExtname) => {
+	if (!Array.isArray(fileExtname)) {
+		let extname = fileExtname.replace(/(\[|\])/g, '')
+		return extname.split(',')
+	} else {
+		return fileExtname
+	}
+	return []
+}
+
+/**
+ * 获取文件和检测是否可选
+ */
+export const get_files_and_is_max = (res, _extname) => {
+	let filePaths = []
+	let files = []
+	if(!_extname || _extname.length === 0){
+		return {
+			filePaths,
+			files
+		}
+	}
+	res.tempFiles.forEach(v => {
+		let fileFullName = get_file_ext(v.name)
+		const extname = fileFullName.ext.toLowerCase()
+		if (_extname.indexOf(extname) !== -1) {
+			files.push(v)
+			filePaths.push(v.path)
+		}
+	})
+	if (files.length !== res.tempFiles.length) {
+		uni.showToast({
+			title: `当前选择了${res.tempFiles.length}个文件 ，${res.tempFiles.length - files.length} 个文件格式不正确`,
+			icon: 'none',
+			duration: 5000
+		})
+	}
+
+	return {
+		filePaths,
+		files
+	}
+}
+
+
+/**
+ * 获取图片信息
+ * @param {Object} filepath
+ */
+export const get_file_info = (filepath) => {
+	return new Promise((resolve, reject) => {
+		uni.getImageInfo({
+			src: filepath,
+			success(res) {
+				resolve(res)
+			},
+			fail(err) {
+				reject(err)
+			}
+		})
+	})
+}
+/**
+ * 获取封装数据
+ */
+export const get_file_data = async (files, type = 'image') => {
+	// 最终需要上传数据库的数据
+	let fileFullName = get_file_ext(files.name)
+	const extname = fileFullName.ext.toLowerCase()
+	let filedata = {
+		name: files.name,
+		uuid: files.uuid,
+		extname: extname || '',
+		cloudPath: files.cloudPath,
+		fileType: files.fileType,
+		thumbTempFilePath: files.thumbTempFilePath,
+		url: files.path || files.path,
+		size: files.size, //单位是字节
+		image: {},
+		path: files.path,
+		video: {}
+	}
+	if (type === 'image') {
+		const imageinfo = await get_file_info(files.path)
+		delete filedata.video
+		filedata.image.width = imageinfo.width
+		filedata.image.height = imageinfo.height
+		filedata.image.location = imageinfo.path
+	} else {
+		delete filedata.image
+	}
+	return filedata
+}