Added option for setting rotation time in daily file ctor

include/spdlog/details/format.cc

@@ -642,11 +642,9 @@ FMT_FUNC void spdlog::details::fmt::BasicWriter<Char>::write_str(
 template <typename Char>
 inline Arg spdlog::details::fmt::BasicFormatter<Char>::parse_arg_index(const Char *&s) {
     const char *error = 0;
-    Arg arg = *s < '0' || *s > '9' ?
-              next_arg(error) : get_arg(parse_nonnegative_int(s), error);
+    Arg arg = *s < '0' || *s > '9' ? next_arg(error) : get_arg(parse_nonnegative_int(s), error);
     if (error) {
-        FMT_THROW(FormatError(
-                      *s != '}' && *s != ':' ? "invalid format string" : error));
+        FMT_THROW(FormatError(*s != '}' && *s != ':' ? "invalid format string" : error));
     }
     return arg;
 }

include/spdlog/details/spdlog_impl.h

@@ -54,13 +54,13 @@ inline std::shared_ptr<spdlog::logger> spdlog::rotating_logger_st(const std::str
 }
 
 // Create file logger which creates new file at midnight):
-inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_mt(const std::string& logger_name, const std::string& filename, bool force_flush)
+inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_mt(const std::string& logger_name, const std::string& filename, int hour, int minute, bool force_flush)
 {
-    return create<spdlog::sinks::daily_file_sink_mt>(logger_name, filename, "txt", force_flush);
+    return create<spdlog::sinks::daily_file_sink_mt>(logger_name, filename, "txt", hour, minute, force_flush);
 }
-inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_st(const std::string& logger_name, const std::string& filename, bool force_flush)
+inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_st(const std::string& logger_name, const std::string& filename, int hour, int minute, bool force_flush)
 {
-    return create<spdlog::sinks::daily_file_sink_st>(logger_name, filename, "txt", force_flush);
+    return create<spdlog::sinks::daily_file_sink_st>(logger_name, filename, "txt", hour, minute, force_flush);
 }
 
 

include/spdlog/sinks/file_sinks.h

@@ -155,14 +155,21 @@ template<class Mutex>
 class daily_file_sink:public base_sink<Mutex>
 {
 public:
-    explicit daily_file_sink(const std::string& base_filename,
+    //create daily file sink which rotates on given time
+    daily_file_sink(
+        const std::string& base_filename,
         const std::string& extension,
-                             bool force_flush=false):
-        _base_filename(base_filename),
+        int rotation_hour,
+        int rotation_minute,
+        bool force_flush=false): _base_filename(base_filename),
         _extension(extension),
-        _midnight_tp (_calc_midnight_tp() ),
+        _rotation_h(rotation_hour),
+        _rotation_m(rotation_minute),
         _file_helper(force_flush)
     {
+        if (rotation_hour < 0 || rotation_hour > 23 || rotation_minute < 0 || rotation_minute > 59)
+            throw spdlog_ex("daily_file_sink: Invalid rotation time in ctor");
+        _rotation_tp = _next_rotation_tp(),
         _file_helper.open(calc_filename(_base_filename, _extension));
     }
 
@@ -170,26 +177,30 @@ public:
 protected:
     void _sink_it(const details::log_msg& msg) override
     {
-        if (std::chrono::system_clock::now() >= _midnight_tp)
+        if (std::chrono::system_clock::now() >= _rotation_tp)
         {
             _file_helper.close();
             _file_helper.open(calc_filename(_base_filename, _extension));
-            _midnight_tp = _calc_midnight_tp();
+            _rotation_tp = _next_rotation_tp();
         }
         _file_helper.write(msg);
     }
 
 private:
-    // Return next midnight's time_point
-    static std::chrono::system_clock::time_point _calc_midnight_tp()
+    std::chrono::system_clock::time_point _next_rotation_tp()
     {
         using namespace std::chrono;
         auto now = system_clock::now();
         time_t tnow = std::chrono::system_clock::to_time_t(now);
         tm date = spdlog::details::os::localtime(tnow);
-        date.tm_hour = date.tm_min = date.tm_sec = 0;
-        auto midnight = std::chrono::system_clock::from_time_t(std::mktime(&date));
-        return system_clock::time_point(midnight + hours(24));
+        date.tm_hour = _rotation_h;
+        date.tm_min = _rotation_m;
+        date.tm_sec = 0;
+        auto rotation_time = std::chrono::system_clock::from_time_t(std::mktime(&date));
+        if (rotation_time > now)
+            return rotation_time;
+        else
+            return system_clock::time_point(rotation_time + hours(24));
     }
 
     //Create filename for the form basename.YYYY-MM-DD.extension
@@ -197,15 +208,18 @@ private:
     {
         std::tm tm = spdlog::details::os::localtime();
         details::fmt::MemoryWriter w;
-        w.write("{}.{:04d}-{:02d}-{:02d}.{}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, extension);
+        w.write("{}_{:04d}-{:02d}-{:02d}_{:02d}-{:02d}.{}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, extension);
         return w.str();
     }
 
     std::string _base_filename;
     std::string _extension;
-    std::chrono::system_clock::time_point _midnight_tp;
+    int _rotation_h;
+    int _rotation_m;
+    std::chrono::system_clock::time_point _rotation_tp;
     details::file_helper _file_helper;
 
+
 };
 
 typedef daily_file_sink<std::mutex> daily_file_sink_mt;

include/spdlog/spdlog.h

@@ -84,10 +84,10 @@ std::shared_ptr<logger> rotating_logger_mt(const std::string& logger_name, const
 std::shared_ptr<logger> rotating_logger_st(const std::string& logger_name, const std::string& filename, size_t max_file_size, size_t max_files, bool force_flush = false);
 
 //
-// Create file logger which creates new file at midnight):
+// Create file logger which creates new file on the given time (default in  midnight):
 //
-std::shared_ptr<logger> daily_logger_mt(const std::string& logger_name, const std::string& filename, bool force_flush = false);
-std::shared_ptr<logger> daily_logger_st(const std::string& logger_name, const std::string& filename, bool force_flush = false);
+std::shared_ptr<logger> daily_logger_mt(const std::string& logger_name, const std::string& filename, int hour=0, int minute=0, bool force_flush = false);
+std::shared_ptr<logger> daily_logger_st(const std::string& logger_name, const std::string& filename, int hour=0, int minute=0, bool force_flush = false);
 
 
 //