diff --git a/SubtitleShifter.cpp b/SubtitleShifter.cpp
index aa02656..6414099 100644
--- a/SubtitleShifter.cpp
+++ b/SubtitleShifter.cpp
@@ -1,6 +1,7 @@
 #include <boost/algorithm/string/classification.hpp>
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/trim.hpp>
+#include <boost/program_options.hpp>
 #include <filesystem>
 #include <fstream>
 #include <iostream>
@@ -177,63 +178,113 @@ bool processASSFile(const std::filesystem::path &inputPath, std::filesystem::pat
     return true;
 }
 
-void processDirectory(const std::filesystem::path &source, const std::filesystem::path &target, int offsetMs) {
-    if (!std::filesystem::exists(source)) {
-        std::cerr << "错误: 源目录不存在: " << source << std::endl;
-        return;
+class SubtitleShifter {
+public:
+    void setNameFilter(const std::string &prefix, const std::string &suffix) {
+        if (m_prefix != prefix) {
+            m_prefix = prefix;
+        }
+        if (m_suffix != suffix) {
+            m_suffix = suffix;
+        }
     }
-
-    if (!std::filesystem::exists(target)) {
-        std::cout << "创建目标目录: " << target << std::endl;
-        if (!std::filesystem::create_directories(target)) {
-            std::cerr << "错误: 无法创建目标目录: " << target << std::endl;
+    void process(const std::filesystem::path &source, const std::filesystem::path &target, int offsetMs) {
+        if (!std::filesystem::exists(source)) {
+            std::cerr << "错误: 源目录不存在: " << source << std::endl;
             return;
         }
-    }
 
-    std::vector<std::filesystem::path> assFiles;
-    try {
-        for (const auto &entry : std::filesystem::directory_iterator(source)) {
-            if (entry.is_regular_file() && entry.path().extension() == ".ass") {
-                assFiles.push_back(entry.path());
+        if (!std::filesystem::exists(target)) {
+            std::cout << "创建目标目录: " << target << std::endl;
+            if (!std::filesystem::create_directories(target)) {
+                std::cerr << "错误: 无法创建目标目录: " << target << std::endl;
+                return;
             }
         }
-    } catch (const std::filesystem::filesystem_error &ex) {
-        std::cerr << "文件系统错误: " << ex.what() << std::endl;
-        return;
-    }
 
-    if (assFiles.empty()) {
-        std::cout << "在目录 " << source << " 中未找到.ass文件" << std::endl;
-        return;
-    }
-
-    std::cout << "找到 " << assFiles.size() << " 个.ass文件" << std::endl;
-
-    for (const auto &sourceFile : assFiles) {
-
-        // 生成目标文件名
-        std::string targetFilename = generateTargetFilename(
-            sourceFile.filename().string(), "MONSTER.TV.2004.DVDRip-Hi.x264.AC3.1280.EP", "-nezumi.zh_CN");
-
-        // 确保文件扩展名为.ass
-        if (std::filesystem::path(targetFilename).extension() != ".ass") {
-            targetFilename += ".ass";
+        std::vector<std::filesystem::path> assFiles;
+        try {
+            for (const auto &entry : std::filesystem::directory_iterator(source)) {
+                if (entry.is_regular_file() && entry.path().extension() == ".ass") {
+                    assFiles.push_back(entry.path());
+                }
+            }
+        } catch (const std::filesystem::filesystem_error &ex) {
+            std::cerr << "文件系统错误: " << ex.what() << std::endl;
+            return;
         }
 
-        std::filesystem::path targetFile = target / targetFilename;
-        // std::cout << sourceFile << " --> " << targetFile << std::endl;
+        if (assFiles.empty()) {
+            std::cout << "在目录 " << source << " 中未找到.ass文件" << std::endl;
+            return;
+        }
 
-        // 处理文件
-        processASSFile(sourceFile, targetFile, offsetMs);
+        std::cout << "找到 " << assFiles.size() << " 个.ass文件" << std::endl;
+
+        for (const auto &sourceFile : assFiles) {
+            // 生成目标文件名
+            std::string targetFilename = sourceFile.filename().string();
+            if (!m_prefix.empty() && !m_suffix.empty()) {
+                targetFilename = generateTargetFilename(sourceFile.filename().string(), m_prefix, m_suffix);
+            }
+
+            // 确保文件扩展名为.ass
+            if (std::filesystem::path(targetFilename).extension() != ".ass") {
+                targetFilename += ".ass";
+            }
+
+            std::filesystem::path targetFile = target / targetFilename;
+            // std::cout << sourceFile << " --> " << targetFile << std::endl;
+
+            // 处理文件
+            processASSFile(sourceFile, targetFile, offsetMs);
+        }
     }
-}
+
+private:
+    std::string m_prefix;
+    std::string m_suffix;
+};
 
 // 1. 找出指定目录下后缀为 `.ass` 下的文件
 // 2. 如果目标文件夹不存在，则创建目标文件夹
 // 3. 对每个源文件，提取文件名，然后按照模板提出字串，和目标文件夹拼凑成新的目标文件
+// ./build/shifter --offset 700 --prefix "[MONSTER][" --suffix "][JP_CN]" -I /mnt/d/Monster
 int main(int argc, char const *argv[]) {
-    processDirectory("/mnt/e/Downloads/[X2] MONSTER 2004 [Chs Subtitle]",
-                     "/mnt/e/Downloads/[X2] MONSTER 2004 [Chs Subtitle]/output",700);
-}
+    std::string input, output;
+    std::string prefix, suffix;
+    int offset;
+    boost::program_options::options_description desc("Allowed options");
+    // clang-format off
+    desc.add_options()
+    ("help", "produce help message")
+    ("input,I", boost::program_options::value<std::string>(&input),"set ass source path")
+    ("output,O", boost::program_options::value<std::string>(&output)->default_value(    "output"),"set ass source path")
+    ("offset", boost::program_options::value<int>(&offset),"ass offset in millseconds")
+    ("prefix", boost::program_options::value<std::string>(&prefix),"name prefix")
+    ("suffix", boost::program_options::value<std::string>(&suffix),"name suffix");
+    // clang-format on
 
+    boost::program_options::variables_map vm;
+    boost::program_options::store(boost::program_options::parse_command_line(argc, argv, desc), vm);
+    boost::program_options::notify(vm);
+    if (!vm.contains("offset")) {
+        std::cout << desc << std::endl;
+        return 1;
+    }
+    if (std::filesystem::path(output).is_relative()) {
+        std::ostringstream oss;
+        oss << input;
+        if (!input.ends_with('/')) {
+            oss << "/";
+        }
+        oss << output;
+        output = oss.str();
+    }
+    std::cout << "input: " << input << std::endl;
+    std::cout << "output: " << output << std::endl;
+    std::cout << "offset: " << offset << std::endl;
+    SubtitleShifter shifter;
+    shifter.setNameFilter(prefix, suffix);
+    shifter.process(input, output, offset);
+}