1、实现目录读取功能

include/util/icu_raii.hpp

@@ -0,0 +1,22 @@
+//
+// Created by Shell on 2026-04-13.
+//
+
+#ifndef FORCAST_API_ICU_RAII_H
+#define FORCAST_API_ICU_RAII_H
+#include <unicode/ucsdet.h>
+
+struct UCharsetDetectorDeleter final
+{
+    void operator ()(UCharsetDetector* ptr) const
+    {
+        if (ptr)
+        {
+            ucsdet_close(ptr);
+        }
+    }
+};
+
+using UCharsetDetectorPtr = std::unique_ptr<UCharsetDetector, UCharsetDetectorDeleter>;
+
+#endif //FORCAST_API_ICU_RAII_H

include/util/string_util.hpp

@@ -0,0 +1,27 @@
+//
+// Created by Shell on 2025-12-17.
+//
+
+#ifndef FORCAST_API_CLIENT_STRING_UTIL_HPP
+#define FORCAST_API_CLIENT_STRING_UTIL_HPP
+#include <string>
+#include <vector>
+
+namespace shell::util {
+    class StringUtil final {
+    public:
+        static std::vector<std::string> split(const std::string &s, const std::string &delim);
+        static std::string convert_encoding(const std::string& input,const std::string& from,const std::string& to);
+        static std::string detect_encoding(const std::string& data);
+        static std::string convert_encoding(const std::string& input,const std::string& to);
+#ifdef _WIN32
+        static std::wstring utf8_to_utf16le(const std::string& input);
+
+        static std::string utf16le_to_utf8(const std::wstring& input);
+
+        static std::string utf16le_to_utf8(const wchar_t* input);
+    };
+#endif
+}
+
+#endif //FORCAST_API_CLIENT_STRING_UTIL_HPP