Fixed tidy warnings

include/spdlog/details/file_helper.h

@@ -25,10 +25,10 @@ public:
 
     void open(const filename_t &fname, bool truncate = false);
     void reopen(bool truncate);
-    void flush();
-    void sync();
+    void flush() const;
+    void sync() const;
     void close();
-    void write(const memory_buf_t &buf);
+    void write(const memory_buf_t &buf) const;
     size_t size() const;
     const filename_t &filename() const;
 

include/spdlog/details/registry.h

@@ -45,7 +45,7 @@ public:
     // This make the default API faster, but cannot be used concurrently with set_default_logger().
     // e.g do not call set_default_logger() from one thread while calling spdlog::info() from
     // another.
-    logger *get_default_raw();
+    logger *get_default_raw() const;
 
     // set default logger.
     // default logger is stored in default_logger_ (for faster retrieval) and in the loggers_ map.

include/spdlog/sinks/ansicolor_sink.h

@@ -32,7 +32,7 @@ public:
 
     void set_color(level color_level, string_view_t color);
     void set_color_mode(color_mode mode);
-    bool should_color();
+    bool should_color() const;
 
     // Formatting codes
     static constexpr std::string_view reset = "\033[m";

include/spdlog/sinks/rotating_file_sink.h

@@ -43,7 +43,7 @@ private:
 
     // delete the target if exists, and rename the src file  to target
     // return true on success, false otherwise.
-    bool rename_file_(const filename_t &src_filename, const filename_t &target_filename);
+    static bool rename_file_(const filename_t &src_filename, const filename_t &target_filename);
 
     filename_t base_filename_;
     std::size_t max_size_;