diff --git a/src/CopyrighFixer/CopyrighFixer/ifilemanager.cpp b/src/CopyrighFixer/CopyrighFixer/ifilemanager.cpp
index 5a5c260..507bb92 100644
--- a/src/CopyrighFixer/CopyrighFixer/ifilemanager.cpp
+++ b/src/CopyrighFixer/CopyrighFixer/ifilemanager.cpp
@@ -16,35 +16,35 @@ bool IFileManager::isSupport(const Extension &curExt) const {
 
 Extension IFileManager::toExtension(const QString &curExt) const {
 
-    if (".cpp" == curExt) {
+    if ("cpp" == curExt) {
         return Extension::CPP;
     }
 
-    if (".hpp" == curExt) {
+    if ("hpp" == curExt) {
         return  Extension::HPP;
     }
 
-    if (".h" == curExt) {
+    if ("h" == curExt) {
         return  Extension::H;
     }
 
-    if (".cc" == curExt) {
+    if ("cc" == curExt) {
         return  Extension::CC;
     }
 
-    if (".qml" == curExt) {
+    if ("qml" == curExt) {
         return  Extension::QML;
     }
 
-    if (".pro" == curExt) {
+    if ("pro" == curExt) {
         return  Extension::PRO;
     }
 
-    if (".txt" == curExt) {
+    if ("txt" == curExt) {
         return  Extension::TXT;
     }
 
-    if (".py" == curExt) {
+    if ("py" == curExt) {
         return  Extension::PY;
     }
 
diff --git a/src/CopyrighFixer/CopyrighFixer/signer.cpp b/src/CopyrighFixer/CopyrighFixer/signer.cpp
index 0628739..02d5383 100644
--- a/src/CopyrighFixer/CopyrighFixer/signer.cpp
+++ b/src/CopyrighFixer/CopyrighFixer/signer.cpp
@@ -7,13 +7,55 @@
 
 #include "signer.h"
 #include "CopyrighFixer/ifilemanager.h"
+#include <QDir>
 
 namespace CopyrighFixer {
 Signer::Signer() {
 
 }
 
-bool Signer::checkSign(const Config &objConf) {
+bool Signer::checkSign(const Config &objConf) {    
+
+    Config currConfig = objConf;
+
+    QDir currentFolder(currConfig.getSrcDir());
+    currentFolder.setFilter(QDir::Dirs | QDir::Files);
+
+    QFileInfoList folderItems(currentFolder.entryInfoList());
+
+    for (auto i_file: folderItems) {
+
+        if (i_file.fileName() == "." || i_file.fileName() == "..") {
+            continue;
+        }
+
+        if (!i_file.isDir()) {
+
+            IFileManager *currFM = searchFileByExt(i_file.suffix());
+            Signature objSing = currConfig.getSignVal();
+
+            if (currFM == nullptr) {
+                return false;
+            }
+
+            bool valRead = currFM->read(i_file.filePath(), objSing);
+            if (!valRead) {
+                return false;
+            }
+
+            currConfig.setSingValue(objSing);
+
+            bool valWrite = currFM->write(i_file.filePath(), objSing);
+            if (!valWrite) {
+                return false;
+            }
+
+        } else {
+            currConfig.setSourceDir(i_file.filePath());
+            checkSign(currConfig);
+        }
+    }
+
     return true;
 }
 
@@ -25,7 +67,6 @@ IFileManager *Signer::searchFileByExt(const QString &extension) {
             return itemFM;
         }
 
-
     }
     return nullptr;
 }