first commit

utils/base64src.js

@@ -0,0 +1,23 @@
+const fsm = wx.getFileSystemManager ? wx.getFileSystemManager() : null;
+const FILE_BASE_NAME = 'tmp_base64src'; //自定义文件名
+
+export function base64src(base64data, cb) {
+  const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64data) || [];
+  if (!format) {
+    return (new Error('ERROR_BASE64SRC_PARSE'));
+  }
+  const filePath = `${wx.env.USER_DATA_PATH}/${FILE_BASE_NAME}.${format}`;
+  const buffer = wx.base64ToArrayBuffer(bodyData);
+  fsm.writeFile({
+    filePath,
+    data: buffer,
+    encoding: 'binary',
+    success() {
+      cb(filePath);
+    },
+    fail() {
+      return (new Error('ERROR_BASE64SRC_WRITE'));
+    },
+  });
+};
+//module.exports = base64src;