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238
example/example.cpp
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@ -1,235 +1,11 @@
//
// Copyright(c) 2015 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
//
// spdlog usage example
//
//
#include <cstdio>
void stdout_logger_example();
void basic_example();
void rotating_example();
void daily_example();
void async_example();
void binary_example();
void trace_example();
void multi_sink_example();
void user_defined_example();
void err_handler_example();
void syslog_example();
void clone_example();
#include "spdlog/spdlog.h"
int main(int, char *[])
int main()
{
spdlog::info("Welcome to spdlog version {}.{}.{} !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
spdlog::warn("Easy padding in numbers like {:08d}", 12);
spdlog::critical("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
spdlog::info("Support for floats {:03.2f}", 1.23456);
spdlog::info("Positional args are {1} {0}..", "too", "supported");
spdlog::info("{:>8} aligned, {:<8} aligned", "right", "left");
// Runtime log levels
spdlog::set_level(spdlog::level::info); // Set global log level to info
spdlog::debug("This message should not be displayed!");
spdlog::set_level(spdlog::level::trace); // Set specific logger's log level
spdlog::debug("This message should be displayed..");
// Customize msg format for all loggers
spdlog::set_pattern("[%H:%M:%S %z] [%^%L%$] [thread %t] %v");
spdlog::info("This an info message with custom format");
spdlog::set_pattern("%+"); // back to default format
try
{
stdout_logger_example();
basic_example();
rotating_example();
daily_example();
clone_example();
async_example();
binary_example();
multi_sink_example();
user_defined_example();
err_handler_example();
trace_example();
// Flush all *registered* loggers using a worker thread every 3 seconds.
// note: registered loggers *must* be thread safe for this to work correctly!
spdlog::flush_every(std::chrono::seconds(3));
// Apply some function on all registered loggers
spdlog::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
// Release all spdlog resources, and drop all loggers in the registry.
// This is optional (only mandatory if using windows + async log).
spdlog::shutdown();
auto l = spdlog::default_logger();
l->trace("HELLO {}!!!", "lite");
l->debug("HELLO {}!!!", "lite");
l->info("HELLO {}!!!", "lite");
l->warn("HELLO {}!!!", "lite");
l->critical("HELLO s{}!!!", "lite");
}
// Exceptions will only be thrown upon failed logger or sink construction (not during logging).
catch (const spdlog::spdlog_ex &ex)
{
std::printf("Log initialization failed: %s\n", ex.what());
return 1;
}
}
#include "spdlog/sinks/stdout_color_sinks.h"
// or #include "spdlog/sinks/stdout_sinks.h" if no colors needed.
void stdout_logger_example()
{
// Create color multi threaded logger.
auto console = spdlog::stdout_color_mt("console");
// or for stderr:
// auto console = spdlog::stderr_color_mt("error-logger");
}
#include "spdlog/sinks/basic_file_sink.h"
void basic_example()
{
// Create basic file logger (not rotated).
auto my_logger = spdlog::basic_logger_mt("file_logger", "logs/basic-log.txt");
}
#include "spdlog/sinks/rotating_file_sink.h"
void rotating_example()
{
// Create a file rotating logger with 5mb size max and 3 rotated files.
auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
}
#include "spdlog/sinks/daily_file_sink.h"
void daily_example()
{
// Create a daily logger - a new file is created every day on 2:30am.
auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
}
// Clone a logger and give it new name.
// Useful for creating component/subsystem loggers from some "root" logger.
void clone_example()
{
auto network_logger = spdlog::default_logger()->clone("network");
network_logger->info("Logging network stuff..");
}
#include "spdlog/async.h"
void async_example()
{
// Default thread pool settings can be modified *before* creating the async logger:
// spdlog::init_thread_pool(32768, 1); // queue with max 32k items 1 backing thread.
auto async_file = spdlog::basic_logger_mt<spdlog::async_factory>("async_file_logger", "logs/async_log.txt");
// alternatively:
// auto async_file = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("async_file_logger", "logs/async_log.txt");
for (int i = 1; i < 101; ++i)
{
async_file->info("Async message #{}", i);
}
}
// Log binary data as hex.
// Many types of std::container<char> types can be used.
// Iterator ranges are supported too.
// Format flags:
// {:X} - print in uppercase.
// {:s} - don't separate each byte with space.
// {:p} - don't print the position on each line start.
// {:n} - don't split the output to lines.
#include "spdlog/fmt/bin_to_hex.h"
void binary_example()
{
std::vector<char> buf;
for (int i = 0; i < 80; i++)
{
buf.push_back(static_cast<char>(i & 0xff));
}
spdlog::info("Binary example: {}", spdlog::to_hex(buf));
spdlog::info("Another binary example:{:n}", spdlog::to_hex(std::begin(buf), std::begin(buf) + 10));
// more examples:
// logger->info("uppercase: {:X}", spdlog::to_hex(buf));
// logger->info("uppercase, no delimiters: {:Xs}", spdlog::to_hex(buf));
// logger->info("uppercase, no delimiters, no position info: {:Xsp}", spdlog::to_hex(buf));
}
// Compile time log levels.
// define SPDLOG_ACTIVE_LEVEL to required level (e.g. SPDLOG_LEVEL_TRACE)
void trace_example()
{
// trace from default logger
SPDLOG_TRACE("Some trace message.. {} ,{}", 1, 3.23);
// debug from default logger
SPDLOG_DEBUG("Some debug message.. {} ,{}", 1, 3.23);
// trace from logger object
auto logger = spdlog::get("file_logger");
SPDLOG_LOGGER_TRACE(logger, "another trace message");
}
// A logger with multiple sinks (stdout and file) - each with a different format and log level.
void multi_sink_example()
{
auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
console_sink->set_level(spdlog::level::warn);
console_sink->set_pattern("[multi_sink_example] [%^%l%$] %v");
auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/multisink.txt", true);
file_sink->set_level(spdlog::level::trace);
spdlog::logger logger("multi_sink", {console_sink, file_sink});
logger.set_level(spdlog::level::debug);
logger.warn("this should appear in both console and file");
logger.info("this message should not appear in the console, only in the file");
}
// User defined types logging by implementing operator<<
#include "spdlog/fmt/ostr.h" // must be included
struct my_type
{
int i;
template<typename OStream>
friend OStream &operator<<(OStream &os, const my_type &c)
{
return os << "[my_type i=" << c.i << "]";
}
};
void user_defined_example()
{
spdlog::info("user defined type: {}", my_type{14});
}
// Custom error handler. Will be triggered on log failure.
void err_handler_example()
{
// can be set globally or per logger(logger->set_error_handler(..))
spdlog::set_error_handler([](const std::string &msg) { printf("*** Custom log error handler: %s ***\n", msg.c_str()); });
}
// syslog example (linux/osx/freebsd)
#ifndef _WIN32
#include "spdlog/sinks/syslog_sink.h"
void syslog_example()
{
std::string ident = "spdlog-example";
auto syslog_logger = spdlog::syslog_logger_mt("syslog", ident, LOG_PID);
syslog_logger->warn("This is warning that will end up in syslog.");
}
#endif
// Android example.
#if defined(__ANDROID__)
#include "spdlog/sinks/android_sink.h"
void android_example()
{
std::string tag = "spdlog-android";
auto android_logger = spdlog::android_logger_mt("android", tag);
android_logger->critical("Use \"adb shell logcat\" to view this message.");
}
#endif

4
lite-example/example.cpp
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@ -2,6 +2,6 @@
int main()
{
auto l = spdlog::create_lite();
l.trace("HELLO {}!!!", "lite");
//auto l = spdlog::create_lite();
spdlog::lite::info("HELLO info {}", 123);
}

74
lite/logger.cpp
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@ -2,20 +2,82 @@
#include "spdlog/spdlog.h"
#include "spdlog/logger.h"
static spdlog::level::level_enum to_spdlog_level(spdlog::lite::level level)
{
return static_cast<spdlog::level::level_enum >(level);
}
static spdlog::lite::level to_lite_level(spdlog::level::level_enum level)
{
return static_cast<spdlog::lite::level>(level);
}
spdlog::lite::logger::logger(std::shared_ptr<spdlog::logger> impl)
{
impl_ = std::move(impl);
}
bool spdlog::lite::logger::should_log(spdlog::lite::level lvl) const SPDLOG_NOEXCEPT
bool spdlog::lite::logger::should_log(spdlog::lite::level level) const SPDLOG_NOEXCEPT
{
auto spd_level = static_cast<spdlog::level::level_enum >(lvl);
auto spd_level = to_spdlog_level(level);
return impl_->should_log(spd_level);//TODO level
}
void spdlog::lite::logger::log_formatted_(spdlog::lite::level lvl, const fmt::memory_buffer &formatted)
void spdlog::lite::logger::log_formatted_(spdlog::lite::level level, const fmt::memory_buffer &formatted)
{
auto spd_level = static_cast<spdlog::level::level_enum >(lvl);
impl_->log(spd_level, spdlog::details::fmt_helper::to_string_view(formatted)); //TODO and source_loc
auto spd_level = to_spdlog_level(level);
impl_->log(spd_level, spdlog::details::fmt_helper::to_string_view(formatted));
}
void spdlog::lite::logger::log_formatted_src(const spdlog::lite::src_loc &src, spdlog::lite::level lvl, const fmt::memory_buffer &formatted)
{
auto spd_level = to_spdlog_level(lvl);
spdlog::source_loc source_loc{src.filename, src.line, src.funcname};
impl_->log(source_loc, spd_level, spdlog::details::fmt_helper::to_string_view(formatted));
}
void spdlog::lite::logger::set_level(spdlog::lite::level level)
{
auto spd_level = to_spdlog_level(level);
impl_->set_level(spd_level);
}
spdlog::lite::level spdlog::lite::logger::get_level() const
{
return to_lite_level(impl_->level());
}
std::string spdlog::lite::logger::name() const
{
return impl_->name();
}
void spdlog::lite::logger::flush()
{
impl_->flush();
}
void spdlog::lite::logger::flush_on(spdlog::lite::level level)
{
auto spd_level = to_spdlog_level(level);
impl_->flush_on(spd_level);
}
spdlog::lite::level spdlog::lite::logger::flush_level() const
{
return to_lite_level(impl_->flush_level());
}
// pattern
void spdlog::lite::logger::set_pattern(std::string pattern)
{
impl_->set_pattern(std::move(pattern));
}
spdlog::lite::logger &spdlog::lite::default_logger()
{
static spdlog::lite::logger s_default(spdlog::default_logger());
return s_default;
}

137
lite/logger.h
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@ -1,19 +1,36 @@
//
// Created by gabi on 3/16/19.
//
#ifndef SPDLOG_LIB_LOGGER_H
#define SPDLOG_LIB_LOGGER_H
#pragma once
#include <memory>
#include "spd_types.h"
#include <string>
#include "spdlog/fmt/fmt.h"
//#define SPDLITE_LOGGER_INFO(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::info, __VA_ARGS__)
//#define SPDLITE_INFO(...) SPDLOG_LOGGER_INFO(spdlog::default_logger_raw(), __VA_ARGS__)
namespace spdlog {
class logger;
namespace lite {
enum class level{
trace,
debug,
info,
warn,
err,
critical,
off
};
struct src_loc {
const char *filename;
int line;
const char* funcname;
};
class logger {
public:
logger() = default;
@ -37,28 +54,124 @@ namespace spdlog {
log_formatted_(lvl, formatted_buf);
}
// template<typename... Args>
// void log(spdlog::lite::level lvl, const char *fmt, const Args &... args)
// {
// log(lvl, fmt, args...);
// }
template<typename... Args>
void trace(const char *fmt, const Args &... args) {
void log(const spdlog::lite::src_loc& src, spdlog::lite::level lvl, const char *fmt, const Args &... args) {
if (!should_log(lvl)) {
return;
}
fmt::memory_buffer formatted_buf;
fmt::format_to(formatted_buf, fmt, args...);
log_formatted_src(src, lvl, formatted_buf);
}
template<typename... Args>
void trace(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::trace, fmt, args...);
}
template<typename... Args>
void trace(const char* source_file, int source_line, const char* source_func, const char *fmt, const Args &... args)
{
spdlog::lite::src_loc src{source_file, source_line, source_func};
log(src, spdlog::lite::level::trace, fmt, args...);
}
template<typename... Args>
void debug(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::debug, fmt, args...);
}
template<typename... Args>
void info(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::info, fmt, args...);
}
template<typename... Args>
void warn(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::warn, fmt, args...);
}
template<typename... Args>
void error(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::err, fmt, args...);
}
template<typename... Args>
void critical(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::critical, fmt, args...);
}
std::string name() const;
// level
void set_level(lite::level level);
lite::level get_level() const;
// flush
void flush();
void flush_on(spdlog::lite::level log_level);
spdlog::lite::level flush_level() const;
// pattern
void set_pattern(std::string pattern);
protected:
std::shared_ptr<spdlog::logger> impl_;
void log_formatted_(spdlog::lite::level lvl, const fmt::memory_buffer &formatted);
void log_formatted_src(const spdlog::lite::src_loc& src, spdlog::lite::level lvl, const fmt::memory_buffer &formatted);
};
spdlog::lite::logger& default_logger();
template<typename... Args>
void trace(const char *fmt, const Args &... args)
{
default_logger().trace(fmt, args...);
}
template<typename... Args>
void debug(const char *fmt, const Args &... args)
{
default_logger().debug(fmt, args...);
}
template<typename... Args>
void info(const char *fmt, const Args &... args)
{
default_logger().info(fmt, args...);
}
template<typename... Args>
void warn(const char *fmt, const Args &... args)
{
default_logger().warn(fmt, args...);
}
template<typename... Args>
void error(const char *fmt, const Args &... args)
{
default_logger().error(fmt, args...);
}
template<typename... Args>
void critical(const char *fmt, const Args &... args)
{
default_logger().critical(fmt, args...);
}
} // namespace lite
// factory to create lite logger
// implement it in a dedicated compilation unit for fast compiles
spdlog::lite::logger create_lite(void* ctx = nullptr);
} // namespace spdlog
#endif //SPDLOG_LIB_LOGGER_H

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lite/spd_types.h
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@ -1,24 +0,0 @@
//
// Copyright(c) 2019 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
// core types, forward declarations and defines used by spdlog
#pragma once
namespace spdlog
{
namespace lite
{
enum class level{
trace,
debug,
info,
warning,
error,
critical,
off
};
}}