Changed some functions to accept strings instead of ref to strings for better semantics

include/spdlog/details/logger_impl.h

@@ -23,14 +23,14 @@ inline spdlog::logger::logger(std::string logger_name, const It &begin, const It
 }
 
 // ctor with sinks as init list
-inline spdlog::logger::logger(const std::string &logger_name, sinks_init_list sinks_list)
-    : logger(logger_name, sinks_list.begin(), sinks_list.end())
+inline spdlog::logger::logger(std::string logger_name, sinks_init_list sinks_list)
+    : logger(std::move(logger_name), sinks_list.begin(), sinks_list.end())
 {
 }
 
 // ctor with single sink
-inline spdlog::logger::logger(const std::string &logger_name, spdlog::sink_ptr single_sink)
-    : logger(logger_name, {std::move(single_sink)})
+inline spdlog::logger::logger(std::string logger_name, spdlog::sink_ptr single_sink)
+    : logger(std::move(logger_name), {std::move(single_sink)})
 {
 }
 
@@ -46,9 +46,9 @@ inline void spdlog::logger::set_formatter(const Args &... args)
     }
 }
 
-inline void spdlog::logger::set_pattern(const std::string &pattern, pattern_time_type time_type)
+inline void spdlog::logger::set_pattern(std::string pattern, pattern_time_type time_type)
 {
-    set_formatter<spdlog::pattern_formatter>(pattern, time_type);
+    set_formatter<spdlog::pattern_formatter>(std::move(pattern), time_type);
 }
 
 template<typename... Args>

include/spdlog/details/pattern_formatter.h

@@ -539,14 +539,14 @@ private:
 class pattern_formatter SPDLOG_FINAL : public formatter
 {
 public:
-    explicit pattern_formatter(const std::string &pattern, pattern_time_type time_type = pattern_time_type::local,
+    explicit pattern_formatter(std::string pattern, pattern_time_type time_type = pattern_time_type::local,
         std::string eol = spdlog::details::os::default_eol)
         : eol_(std::move(eol))
         , pattern_time_type_(time_type)
         , last_log_secs_(0)
     {
         std::memset(&cached_tm_, 0, sizeof(cached_tm_));
-        compile_pattern_(pattern);
+        compile_pattern_(std::move(pattern));
     }
 
     pattern_formatter(const pattern_formatter &) = delete;

include/spdlog/logger.h

@@ -28,8 +28,8 @@ namespace spdlog {
 class logger
 {
 public:
-    logger(const std::string &name, sink_ptr single_sink);
-    logger(const std::string &name, sinks_init_list sinks);
+    logger(std::string name, sink_ptr single_sink);
+    logger(std::string name, sinks_init_list sinks);
 
     template<typename It>
     logger(std::string name, const It &begin, const It &end);
@@ -114,7 +114,7 @@ public:
 
     // create a pattern formatter all the sinks in this logger.
     // each sink gets itw own private copy of a formatter object.
-    void set_pattern(const std::string &pattern, pattern_time_type time_type = pattern_time_type::local);
+    void set_pattern(std::string pattern, pattern_time_type time_type = pattern_time_type::local);
 
     // create a FormatterT formatter for each sink in this logger.
     // each sink gets its own private copy of a formatter object.

include/spdlog/spdlog.h

@@ -23,10 +23,10 @@ struct synchronous_factory
 {
     template<typename Sink, typename... SinkArgs>
 
-    static std::shared_ptr<spdlog::logger> create(const std::string &logger_name, SinkArgs &&... args)
+    static std::shared_ptr<spdlog::logger> create(std::string logger_name, SinkArgs &&... args)
     {
         auto sink = std::make_shared<Sink>(std::forward<SinkArgs>(args)...);
-        auto new_logger = std::make_shared<logger>(logger_name, std::move(sink));
+        auto new_logger = std::make_shared<logger>(std::move(logger_name), std::move(sink));
         details::registry::instance().register_and_init(new_logger);
         return new_logger;
     }
@@ -39,9 +39,9 @@ using default_factory = synchronous_factory;
 // Example:
 // spdlog::create<daily_file_sink_st>("logger_name", "dailylog_filename", 11, 59);
 template<typename Sink, typename... SinkArgs>
-inline std::shared_ptr<spdlog::logger> create(const std::string &logger_name, SinkArgs &&... sink_args)
+inline std::shared_ptr<spdlog::logger> create(std::string logger_name, SinkArgs &&... sink_args)
 {
-    return default_factory::create<Sink>(logger_name, std::forward<SinkArgs>(sink_args)...);
+    return default_factory::create<Sink>(std::move(logger_name), std::forward<SinkArgs>(sink_args)...);
 }
 
 //
@@ -57,9 +57,9 @@ inline std::shared_ptr<logger> get(const std::string &name)
 // Set global formatting
 // example: spdlog::set_pattern("%Y-%m-%d %H:%M:%S.%e %l : %v");
 //
-inline void set_pattern(const std::string &format_string, pattern_time_type time_type = pattern_time_type::local)
+inline void set_pattern(std::string format_string, pattern_time_type time_type = pattern_time_type::local)
 {
-    details::registry::instance().set_pattern(format_string, time_type);
+    details::registry::instance().set_pattern(std::move(format_string), time_type);
 }
 
 //