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miniprogram/utils/util.ts

@@ -136,6 +136,29 @@ export const isImageFile = (path: string) => {
   return /\.(jpe?g|png|gif|svg|webp|bmp)$/i.test(path);
 };
 
+export const isPDFFile = (path: string) => {
+  return /\.(pdf)$/i.test(path);
+};
+
+/** 判断是不是Excel */
+export const isExcelFile = (path: string) => {
+  return /\.(xlsx|xls)$/i.test(path);
+};
+
+/** 获取文件类型 */
+export const getFileType = (path: string): 'file' | 'image' | 'excel' | 'pdf' => {
+  if (typeof path == 'string') {
+    if (isExcelFile(path)) {
+      return 'excel';
+    } else if (isImageFile(path)) {
+      return 'image';
+    } else if (isPDFFile(path)) {
+      return 'pdf';
+    }
+  }
+  return 'file';
+};
+
 /** 滚动到顶部 */
 export const scrollToTop = () => {
   wx.pageScrollTo({ scrollTop: 0 });
@@ -347,3 +370,16 @@ export const sleep = (callback?: () => void, ms = 300): Promise<boolean> => {
 };
 
 export const cloneLite = (data: any) => JSON.parse(JSON.stringify(data));
+
+/** 转换文件大小 */
+export const formatFileSize = (fileSize: any): string => {
+  const file_size = toNumber(fileSize);
+  if (file_size == 0) {
+    return '0B';
+  }
+  const unitArr = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
+  let index = 0;
+  index = Math.floor(Math.log(file_size) / Math.log(1024));
+  const size = file_size / 1024 ** index;
+  return size.toFixed(0) + unitArr[index];
+};