diff --git a/src/cppcommon/config.cpp b/src/cppcommon/config.cpp
index f011720..4d2334f 100644
--- a/src/cppcommon/config.cpp
+++ b/src/cppcommon/config.cpp
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #include "config.h"
 #include "str_functs.h"
 
diff --git a/src/cppcommon/config.h b/src/cppcommon/config.h
index b864cb1..2a7af99 100644
--- a/src/cppcommon/config.h
+++ b/src/cppcommon/config.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_CONFIG_H
 #define CPPCOMMON_CONFIG_H
 
diff --git a/src/cppcommon/file_functs.cpp b/src/cppcommon/file_functs.cpp
index e487ba2..d08e62f 100644
--- a/src/cppcommon/file_functs.cpp
+++ b/src/cppcommon/file_functs.cpp
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #include "file_functs.h"
 
 namespace CPPCOMMON
diff --git a/src/cppcommon/file_functs.h b/src/cppcommon/file_functs.h
index 980e6b1..f167b8c 100644
--- a/src/cppcommon/file_functs.h
+++ b/src/cppcommon/file_functs.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_FILE_FUNCTS_H
 #define CPPCOMMON_FILE_FUNCTS_H
 
diff --git a/src/cppcommon/io_functs.cpp b/src/cppcommon/io_functs.cpp
index 0a4c790..f04a3bb 100644
--- a/src/cppcommon/io_functs.cpp
+++ b/src/cppcommon/io_functs.cpp
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #include "io_functs.h"
 
 namespace CPPCOMMON
diff --git a/src/cppcommon/io_functs.h b/src/cppcommon/io_functs.h
index 29f0eb1..16ecb86 100644
--- a/src/cppcommon/io_functs.h
+++ b/src/cppcommon/io_functs.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_IO_FUNCTS_H
 #define CPPCOMMON_IO_FUNCTS_H
 #include <fstream>
diff --git a/src/cppcommon/logger.cpp b/src/cppcommon/logger.cpp
index 7823749..abf9fd3 100644
--- a/src/cppcommon/logger.cpp
+++ b/src/cppcommon/logger.cpp
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #include "logger.h"
 namespace CPPCOMMON
 {
diff --git a/src/cppcommon/logger.h b/src/cppcommon/logger.h
index e9e26e8..5d4a712 100644
--- a/src/cppcommon/logger.h
+++ b/src/cppcommon/logger.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_LOGGER_H
 #define CPPCOMMON_LOGGER_H
 
diff --git a/src/cppcommon/str_functs.cpp b/src/cppcommon/str_functs.cpp
index b0dd97b..1c5514f 100644
--- a/src/cppcommon/str_functs.cpp
+++ b/src/cppcommon/str_functs.cpp
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #include "str_functs.h"
 
 namespace CPPCOMMON
diff --git a/src/cppcommon/str_functs.h b/src/cppcommon/str_functs.h
index 2d69311..d9c9581 100644
--- a/src/cppcommon/str_functs.h
+++ b/src/cppcommon/str_functs.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_STR_FUNCTS_H
 #define CPPCOMMON_STR_FUNCTS_H
 #include <fstream>
diff --git a/src/cppcommon/typedefs.h b/src/cppcommon/typedefs.h
index 6a8faa1..09f0a3a 100644
--- a/src/cppcommon/typedefs.h
+++ b/src/cppcommon/typedefs.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_TYPEDEFS_H
 #define CPPCOMMON_TYPEDEFS_H
 
diff --git a/src/cppcommon/vec_functs.cpp b/src/cppcommon/vec_functs.cpp
index 9c8150f..843c0f9 100644
--- a/src/cppcommon/vec_functs.cpp
+++ b/src/cppcommon/vec_functs.cpp
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #include "vec_functs.h"
 
 #ifdef TEST_VEC_FUNCTS
diff --git a/src/cppcommon/vec_functs.h b/src/cppcommon/vec_functs.h
index 3986a26..2fd9d5a 100644
--- a/src/cppcommon/vec_functs.h
+++ b/src/cppcommon/vec_functs.h
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 #ifndef CPPCOMMON_VEC_FUNCTS_H
 #define CPPCOMMON_VEC_FUNCTS_H
 #include <iostream>
diff --git a/src/cppcommon/vec_functs.tcc b/src/cppcommon/vec_functs.tcc
index 651b831..f262971 100644
--- a/src/cppcommon/vec_functs.tcc
+++ b/src/cppcommon/vec_functs.tcc
@@ -1,3 +1,7 @@
+/************************************
+ * file enc : utf8
+ * author   : wuyanyi09@gmail.com
+************************************/
 
 #ifndef CPPCOMMON_VEC_FUNCTS_TCC
 #define CPPCOMMON_VEC_FUNCTS_TCC