#pragma once
-#include <ostream>
+#include <algorithm>
+#include <iomanip>
+#include <iostream>
#include <string>
#include <sstream>
#include <vector>
+#include <fstream>
+#include <stdexcept>
namespace logger {
- enum class level {
- debug, note, warn, error, fatal
- };
-
/**
* conv::to_string will be used to convert whatever argument is send
* to the logger to a string. If another type shall be supported,
inline std::string to_string( const std::string& arg ) {
return arg;
}
- inline std::string to_string( const char* arg ) {
+ inline std::string to_string( const char *arg ) {
return arg;
}
+
+ } // namespace conv
+
+ enum class level {
+ debug, note, warn, error, fatal
+ };
+
+ const auto default_level = level::note;
+
+ struct log_target {
+ log_target( std::ostream& stream, level min_level = default_level ):
+ stream {&stream}, min_level {min_level} {}
+ log_target( std::ofstream& stream, level min_level = default_level ):
+ stream {&stream}, min_level {min_level} {
+ if( !stream.is_open() ) {
+ throw std::runtime_error {"logfile not open"};
+ }
+ }
+ std::ostream *stream;
+ level min_level;
+ };
+
+ class logger_set;
+ namespace impl {
+ void reassign_stack_pointer( logger_set *&ptr );
}
+ /**
+ * Provides controll over wether a logger should automatically register itself
+ */
+ enum class auto_register {
+ on, off
+ };
+
+ class logger_set {
+ public:
+ logger_set( std::initializer_list<log_target> lst, auto_register = auto_register::on );
+
+ logger_set( logger_set&& ) noexcept;
+ logger_set& operator=( logger_set&& ) noexcept;
+ ~logger_set();
+
+ template<typename... Args>
+ void log( level l, Args&& ... args );
+ template<typename... Args>
+ void logf( level l, const std::string& format, Args&& ... args );
+
+ template<typename... Args>
+ void debug( Args&& ... args );
+ template<typename... Args>
+ void debugf( const std::string& format, Args&& ... args );
+
+ template<typename... Args>
+ void note( Args&& ... args );
+ template<typename... Args>
+ void notef( const std::string& format, Args&& ... args );
+
+ template<typename... Args>
+ void warn( Args&& ... args );
+ template<typename... Args>
+ void warnf( const std::string& format, Args&& ... args );
+
+ template<typename... Args>
+ void error( Args&& ... args );
+ template<typename... Args>
+ void errorf( const std::string& format, Args&& ... args );
+
+ template<typename... Args>
+ void fatal( Args&& ... args );
+ template<typename... Args>
+ void fatalf( const std::string& format, Args&& ... args );
+
+ friend void impl::reassign_stack_pointer( logger_set *&ptr );
+ friend logger_set current_logger_extended( std::initializer_list<log_target> further_targets );
+ private:
+ void log_impl( level l, const std::string& msg );
+
+ std::vector<log_target> m_loggers;
+ logger_set **m_stackpointer = nullptr;
+ level m_min_level;
+ };
+
+ logger_set current_logger_extended( std::initializer_list<log_target> further_targets );
+
namespace impl {
- void log( level, const std::vector<std::string>& args );
- void logf( level, const std::string&, std::vector<std::string> args );
+ std::string concat_msg( level l, const std::vector<std::string>& args );
+ std::string format_msg( level l, const std::string&, std::vector<std::string> args );
+ logger_set& active_logger();
}
- void set_stream( std::ostream& );
+ template <typename... Args>
+ void logger_set::log( level l, Args&& ... data ) {
+ if( l < m_min_level ) {
+ return;
+ }
+
+ log_impl( l, impl::concat_msg( l, {conv::to_string( std::forward<Args>( data ) )...} ) );
+ }
template <typename... Args>
- void log( level l, Args&& ... data ) {
- impl::log( l, {conv::to_string( std::forward<Args>( data ) )...} );
+ void logger_set::logf( level l, const std::string& format, Args&& ... data ) {
+ if( l < m_min_level ) {
+ return;
+ }
+
+ log_impl( l, impl::format_msg( l, format, {conv::to_string( std::forward<Args>( data ) )...} ) );
}
template <typename... Args>
- void logf( level l, const std::string& format, Args&& ... data ) {
- impl::logf( l, format, {conv::to_string( std::forward<Args>( data ) )...} );
+ void log( level l, Args&& ... args ) {
+ impl::active_logger().log( l, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logf( level l, const std::string& format, Args&& ... args ) {
+ impl::active_logger().logf( l, format, std::forward<Args>( args )... );
+ }
+
+ // concat-based methods
+ template <typename... Args>
+ void logger_set::debug( Args&& ... args ) {
+ log( level::debug, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::note( Args&& ... args ) {
+ log( level::note, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::warn( Args&& ... args ) {
+ log( level::warn, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::error( Args&& ... args ) {
+ log( level::error, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::fatal( Args&& ... args ) {
+ log( level::fatal, std::forward<Args>( args )... );
+ }
+
+ // format-based methods
+ template <typename... Args>
+ void logger_set::debugf( const std::string& fmt, Args&& ... args ) {
+ logf( level::debug, fmt, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::notef( const std::string& fmt, Args&& ... args ) {
+ logf( level::note, fmt, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::warnf( const std::string& fmt, Args&& ... args ) {
+ logf( level::warn, fmt, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::errorf( const std::string& fmt, Args&& ... args ) {
+ logf( level::error, fmt, std::forward<Args>( args )... );
+ }
+ template <typename... Args>
+ void logger_set::fatalf( const std::string& fmt, Args&& ... args ) {
+ logf( level::fatal, fmt, std::forward<Args>( args )... );
}
+ // global concat-based
template <typename... Args>
void debug( Args&& ... args ) {
log( level::debug, std::forward<Args>( args )... );
log( level::fatal, std::forward<Args>( args )... );
}
+ // global format-based
template <typename... Args>
void debugf( const std::string& fmt, Args&& ... args ) {
logf( level::debug, fmt, std::forward<Args>( args )... );
projects / cassiopeia.git / blobdiff