diff --git a/tests/tab.cpp b/tests/tab.cpp
new file mode 100644
index 00000000..4d46bd8c
--- /dev/null
+++ b/tests/tab.cpp
@@ -0,0 +1,125 @@
+#include <stdlib.h>
+#include <memory.h>
+
+#if !defined(_WIN32)
+
+#include <dirent.h>
+
+#endif //!defined(_WIN32)
+
+#include <set>
+#include "Util/CMD.h"
+#include "Util/util.h"
+#include "Util/logger.h"
+#include "Util/File.h"
+#include "Util/uv_errno.h"
+
+using namespace std;
+using namespace toolkit;
+
+class CMD_main : public CMD {
+public:
+    CMD_main() {
+        _parser.reset(new OptionParser(nullptr));
+        (*_parser) << Option('f',/*该选项简称，如果是\x00则说明无简称*/
+                             "filter",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             "c,cpp,cxx,c,h,hpp",/*该选项默认值*/
+                             true,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "文件后缀过滤器",/*该选项说明文字*/
+                             nullptr);
+
+        (*_parser) << Option('i',/*该选项简称，如果是\x00则说明无简称*/
+                             "in",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             nullptr,/*该选项默认值*/
+                             true,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "文件夹或文件",/*该选项说明文字*/
+                             nullptr);
+    }
+
+    virtual ~CMD_main() {}
+};
+
+void process_file(const char *file) {
+    auto str = File::loadFile(file);
+    if (str.empty()) {
+        return;
+    }
+    auto lines = split(str, "\n");
+    deque<string> lines_copy;
+    for (auto &line : lines) {
+        string line_copy;
+        bool flag = false;
+        for (auto &ch : line) {
+            switch (ch) {
+                case '\t' :
+                    line_copy.append("    ");
+                    break;
+                case ' ':
+                    line_copy.push_back(ch);
+                    break;
+                default:
+                    line_copy.push_back(ch);
+                    flag = true;
+                    break;
+            }
+            if (flag) {
+                break;
+            }
+        }
+        lines_copy.push_back(line_copy);
+    }
+    str.clear();
+    for (auto &line : lines_copy) {
+        str.append(line);
+        str.push_back('\n');
+    }
+    File::saveFile(str, file);
+}
+
+int main(int argc, char *argv[]) {
+    CMD_main cmd_main;
+    try {
+        cmd_main.operator()(argc, argv);
+    } catch (std::exception &ex) {
+        cout << ex.what() << endl;
+        return -1;
+    }
+
+    bool rm_bom = cmd_main.hasKey("rm");
+    string path = cmd_main["in"];
+    string filter = cmd_main["filter"];
+    auto vec = split(filter, ",");
+
+    set<string> filter_set;
+    for (auto ext : vec) {
+        filter_set.emplace(ext);
+    }
+
+    bool no_filter = filter_set.find("*") != filter_set.end();
+    //设置日志
+    Logger::Instance().add(std::make_shared<ConsoleChannel>());
+    File::scanDir(path, [&](const string &path, bool isDir) {
+        if (isDir) {
+            return true;
+        }
+        if (!no_filter) {
+            //开启了过滤器
+            auto pos = strstr(path.data(), ".");
+            if (pos == nullptr) {
+                //没有后缀
+                return true;
+            }
+            auto ext = pos + 1;
+            if (filter_set.find(ext) == filter_set.end()) {
+                //后缀不匹配
+                return true;
+            }
+        }
+        //该文件匹配
+        process_file(path.data());
+        return true;
+    }, true);
+    return 0;
+}