diff --git a/src/config_util.rs b/src/config_util.rs
index cf20afa..c1ec7e0 100644
--- a/src/config_util.rs
+++ b/src/config_util.rs
@@ -1,10 +1,7 @@
 use std::{
     fs,
     path::Path,
-    cmp::{
-        min,
-        max,
-    },
+    cmp::{ min, max, },
 };
 use rust_util::{
     iff,
@@ -136,11 +133,10 @@ pub fn parse_config(config_json: &json::JsonValue) -> OSSBackupdConfig {
 pub fn get_config_json(custom_oss_backupd_config: Option<&str>, verbose: bool) -> Option<json::JsonValue> {
     let config_content = get_config_content(custom_oss_backupd_config, verbose)?;
     match json::parse(&config_content) {
-        Err(e) => {
+        Ok(o) => Some(o), Err(e) => {
             print_message(MessageType::ERROR, &format!("Parse config json failed: {}", e));
             None
         },
-        Ok(o) => Some(o),
     }
 }
 
@@ -255,11 +251,10 @@ fn get_config_content(custom_oss_backupd_config: Option<&str>, verbose: bool) ->
         let custom_oss_backupd_config_path = Path::new(custom_oss_backupd_config_val);
         if custom_oss_backupd_config_path.exists() {
             return match fs::read_to_string(custom_oss_backupd_config_path) {
-                Err(e) => {
+                Ok(o) => Some(o), Err(e) => {
                     print_message(MessageType::ERROR, &format!("Read config file {} error: {}", custom_oss_backupd_config_val, e));
                     None
                 },
-                Ok(o) => Some(o),
             };
         } else {
             print_message(MessageType::ERROR, &format!("Custom config file not found: {}", custom_oss_backupd_config_val));
@@ -273,19 +268,17 @@ fn get_config_content(custom_oss_backupd_config: Option<&str>, verbose: bool) ->
             print_message(MessageType::DEBUG, &format!("Read config from: {}", OSS_BACKUPD_CONFIG));
         }
         return match fs::read_to_string(oss_backupd_config_path) {
-            Err(e) => {
+            Ok(o) => Some(o), Err(e) => {
                 print_message(MessageType::ERROR, &format!("Read config file {} error: {}", OSS_BACKUPD_CONFIG, e));
                 None
             },
-            Ok(o) => Some(o),
         };
     }
     let home_dot_oss_backupd_config = & match get_user_home_dir(DOT_OSS_BACKUPD_CONFIG) {
-        Err(e) => {
+        Ok(o) => o, Err(e) => {
             print_message(MessageType::WARN, &format!("Get user home error: {}", e));
             String::new()
         },
-        Ok(o) => o,
     };
     if !home_dot_oss_backupd_config.is_empty() {
         let home_dot_oss_backupd_config_path = Path::new(home_dot_oss_backupd_config);
@@ -294,11 +287,10 @@ fn get_config_content(custom_oss_backupd_config: Option<&str>, verbose: bool) ->
                 print_message(MessageType::DEBUG, &format!("Read config from: {}", home_dot_oss_backupd_config));
             }
             return match fs::read_to_string(home_dot_oss_backupd_config_path) {
-                Err(e) => {
+                Ok(o) => Some(o), Err(e) => {
                     print_message(MessageType::ERROR, &format!("Read config file {} error: {}", home_dot_oss_backupd_config, e));
                     None
                 },
-                Ok(o) => Some(o),
             };
         }
     }
@@ -308,11 +300,10 @@ fn get_config_content(custom_oss_backupd_config: Option<&str>, verbose: bool) ->
             print_message(MessageType::DEBUG, &format!("Read config from: {}", ETC_OSS_BACKUPD_CONFIG));
         }
         return match fs::read_to_string(etc_oss_backupd_config_path) {
-            Err(e) => {
+            Ok(o) => Some(o), Err(e) => {
                 print_message(MessageType::ERROR, &format!("Read config file {} error: {}", ETC_OSS_BACKUPD_CONFIG, e));
                 None
             },
-            Ok(o) => Some(o),
         };
     }
 
diff --git a/src/main.rs b/src/main.rs
index d0a8db1..5eb1255 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,10 +10,7 @@ mod opt;
 use std::{
     time::SystemTime,
     path::Path,
-    fs::{
-        self,
-        File,
-    },
+    fs::{ self, File, },
 };
 use rust_util::{
     iff,
@@ -39,8 +36,7 @@ fn main() -> XResult<()> {
     }
 
     let config_json = match get_config_json(iff!(options.config.is_empty(), None, Some(&options.config)), options.verbose) {
-        None => return Ok(()),
-        Some(c) => c,
+        Some(c) => c, None => return Ok(()),
     };
 
     let oss_backupd_config = parse_config(&config_json);
@@ -93,8 +89,7 @@ fn process_config_item(options: &Options, config_item: &OSSBackupdConfigItem,
     }
 
     let path = &match &oss_config.path {
-        None => format!("default_path_at_{}", item_index),
-        Some(path) => path.to_owned(),
+        Some(path) => path.to_owned(), None => format!("default_path_at_{}", item_index),
     };
     if options.verbose {
         print_message(MessageType::DEBUG, &format!("Path: {}", path));
@@ -112,11 +107,10 @@ fn process_config_item(options: &Options, config_item: &OSSBackupdConfigItem,
     }
 
     let open_pgp_tool = match OpenPGPTool::from_file(encrypt_pubkey_file) {
-        Err(e) => {
+        Ok(t) => t, Err(e) => {
             print_message(MessageType::ERROR, &format!("Error in load pgp file: {}, at item index: {}", e, item_index));
             return Ok(());
         },
-        Ok(open_pgp_tool) => open_pgp_tool,
     };
 
     let secs = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs();
@@ -152,12 +146,11 @@ fn process_config_item(options: &Options, config_item: &OSSBackupdConfigItem,
     };
 
     let file_temp_pgp_file = match File::open(temp_pgp_file) {
-        Err(e) => {
+        Ok(f) => f, Err(e) => {
             print_message(MessageType::ERROR, &format!("Error in open file: {}, at item index: {}", e, item_index));
             remove_temp_files();
             return Ok(());
         },
-        Ok(file_temp_pgp_file) => file_temp_pgp_file,
     };
 
     if options.verbose {
@@ -187,8 +180,7 @@ fn process_oss_files(options: &Options, oss_client: &OSSClient, bucket_name: &st
         print_message(MessageType::DEBUG, &format!("Read meta file: {}", meta_file_key));
     }
     let meta_file_content = match oss_client.get_file_content(bucket_name, meta_file_key)? {
-        None => "[]".to_owned(),
-        Some(c) => c,
+        Some(c) => c, None => "[]".to_owned(),
     };
     if options.verbose {
         print_message(MessageType::DEBUG, &format!("Read meta file content: {}", &meta_file_content));
diff --git a/src/oss_util.rs b/src/oss_util.rs
index 2622d8b..d42ea5e 100644
--- a/src/oss_util.rs
+++ b/src/oss_util.rs
@@ -1,15 +1,13 @@
-use std::{
-    fs::File,
-    time::SystemTime,
-};
+use std::fs::File;
 use sha1::Sha1;
-use hmac::{
-    Hmac,
-    Mac,
-};
+use hmac::{ Hmac, Mac, };
 use reqwest::Response;
-use rust_util::*;
-
+use rust_util::{
+    iff,
+    XResult,
+    new_box_ioerror,
+    util_time::get_current_secs,
+};
 
 pub const DEFAULT_URL_VALID_IN_SECS: u64 = 1000;
 
@@ -136,8 +134,3 @@ fn calc_hmac_sha1(key: &[u8], message: &[u8]) -> String {
         Err(e) => format!("[ERROR]Hmac error: {}", e),
     }
 }
-
-fn get_current_secs() -> u64 {
-    SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs()
-}
-
diff --git a/src/pgp_util.rs b/src/pgp_util.rs
index 68f236f..33fc3f7 100644
--- a/src/pgp_util.rs
+++ b/src/pgp_util.rs
@@ -10,10 +10,7 @@ use std::{
         BufWriter,
     },
 };
-use rust_util::{
-    XResult,
-    new_box_error,
-};
+use rust_util::{ XResult, new_box_error, };
 use openpgp::{
     types::KeyFlags,
     TPK,
@@ -25,10 +22,7 @@ use openpgp::{
         LiteralWriter,
     },
 };
-use indicatif::{
-    ProgressBar, 
-    ProgressStyle
-};
+use indicatif::{ ProgressBar, ProgressStyle, };
 
 const BUFF_SIZE: usize = 512 * 1024;
 const PB_PROGRESS: &str = "#-";
diff --git a/src/zip_util.rs b/src/zip_util.rs
index 2184693..df702b7 100644
--- a/src/zip_util.rs
+++ b/src/zip_util.rs
@@ -7,10 +7,7 @@ use std::{
 };
 use zip::{
     CompressionMethod,
-    write::{
-        ZipWriter,
-        FileOptions,
-    },
+    write::{ ZipWriter, FileOptions, },
 };
 use rust_util::{
     XResult,