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add loggers

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This commit is contained in:
Timur A. Fatkhullin
2026-07-06 18:59:09 +03:00
parent dc8e209953
commit b04bfab964
5 changed files with 280 additions and 1 deletions
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40
CMakeLists.txt
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@@ -3,12 +3,42 @@ project(snipplib VERSION 0.1.0 LANGUAGES CXX)
option(SNPLIB_BUILD_EXAMPLES "Build examples" ON)
option(SNPLIB_USE_SPDLOG "Use of spdlog library" ON)
if(SNPLIB_USE_SPDLOG)
find_package(spdlog CONFIG)
if(NOT spdlog_FOUND)
FetchContent_Declare(
spdlog
GIT_REPOSITORY "https://github.com/gabime/spdlog.git"
GIT_TAG "v1.17.0"
GIT_SHALLOW TRUE
GIT_SUBMODULES ""
GIT_PROGRESS TRUE
# CMAKE_ARGS
# -DSPDLOG_USE_STD_FORMAT=ON
# -DSPDLOG_FMT_EXTERNAL=OFF
OVERRIDE_FIND_PACKAGE
)
set(SPDLOG_USE_STD_FORMAT ON CACHE INTERNAL "Use of C++20 std::format")
set(SPDLOG_FMT_EXTERNAL
OFF
CACHE INTERNAL
"Turn off external fmt library"
)
set(SPDLOG_INSTALL ON CACHE BOOL "Enable spdlog installation" FORCE)
FetchContent_MakeAvailable(spdlog)
endif()
endif(SNPLIB_USE_SPDLOG)
set(LIB_HEADERS
include/snipplib/concepts/snplib_concepts.h
include/snipplib/concepts/snplib_traits.h
include/snipplib/utils/snplib_hash.h
include/snipplib/utils/snplib_string.h
include/snipplib/utils/snplib_keyvalue_expr.h
include/snipplib/utils/snplib_logger.h
include/snipplib/utils/snplib_utils.h
include/snipplib/containers/snplib_hmap.h
include/snipplib/containers/snplib_hvec.h
@@ -24,6 +54,16 @@ target_include_directories(
"$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
"$<INSTALL_INTERFACE:include/${PROJECT_NAME}>"
)
if(SNPLIB_USE_SPDLOG)
target_compile_definitions(
${PROJECT_NAME}
INTERFACE
SPDLOG_USE_STD_FORMAT=1
SPDLOG_FMT_EXTERNAL=0
SNPLIB_SPDLOGGER=1
)
target_link_libraries(${PROJECT_NAME} INTERFACE spdlog::spdlog_header_only)
endif()
if(SNPLIB_BUILD_EXAMPLES)
set(EXAM_STRING str_exam)

14
include/snipplib/concepts/snplib_concepts.h
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@@ -200,4 +200,18 @@ template <typename T, typename UT = void>
concept snplib_async_retval_c = snplib_awaitable_c<T, UT> && snplib_expected_c<UT>;
/* a concept for generic logger class */
template <typename T>
concept snplib_logger_c = requires(T t) {
{ t.logInfo(std::declval<std::string const&>()) };
{ t.logWarn(std::declval<std::string const&>()) };
{ t.logDebug(std::declval<std::string const&>()) };
{ t.logError(std::declval<std::string const&>()) };
{ t.logTrace(std::declval<std::string const&>()) };
};
} // namespace snplib

1
include/snipplib/concepts/snplib_traits.h
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@@ -81,4 +81,5 @@ struct snplib_func_traits_t<F&&> : snplib_func_traits_t<F> {
template <typename T>
using snplib_func_arg1_t = typename snplib_func_traits_t<T>::arg1_t;
} // namespace snplib

222
include/snipplib/utils/snplib_logger.h Normal file
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@@ -0,0 +1,222 @@
#pragma once
#include <list>
#ifdef SNPLIB_SPDLOGGER
#include <spdlog/logger.h>
#endif
#include "../concepts/snplib_concepts.h"
namespace snplib
{
/* snplib_logger_c-like class adaptor to use formating */
// template <snplib_logger_c LoggerT>
// struct snplib_logger_fmt_adaptor_t : public LoggerT {
// template<typename ...CtorArgTs>
// snplib_logger_fmt_adaptor_t(CtorArgTs&&... ctor_args): LoggerT(std::forward<CtorArgTs>(ctor_args)...) {}
// ~snplib_logger_fmt_adaptor_t() = default;
// template <std::formattable<char>... ArgTs>
// auto logInfo(std::format_string<ArgTs...> fmt, ArgTs&&... args)
// {
// return logInfo(std::format(fmt, std::forward<ArgTs>(args)...));
// }
// template <std::formattable<char>... ArgTs>
// auto logWarn(std::format_string<ArgTs...> fmt, ArgTs&&... args)
// {
// return logWarn(std::format(fmt, std::forward<ArgTs>(args)...));
// }
// template <std::formattable<char>... ArgTs>
// auto logDebug(std::format_string<ArgTs...> fmt, ArgTs&&... args)
// {
// return logDebug(std::format(fmt, std::forward<ArgTs>(args)...));
// }
// template <std::formattable<char>... ArgTs>
// auto logError(std::format_string<ArgTs...> fmt, ArgTs&&... args)
// {
// return logError(std::format(fmt, std::forward<ArgTs>(args)...));
// }
// template <std::formattable<char>... ArgTs>
// auto logTrace(std::format_string<ArgTs...> fmt, ArgTs&&... args)
// {
// return logTrace(std::format(fmt, std::forward<ArgTs>(args)...));
// }
// };
/* a NULL-logger */
struct snplib_null_logger_t {
void logInfo(std::string const&) {}
void logWarn(std::string const&) {}
void logDebug(std::string const&) {}
void logError(std::string const&) {}
void logTrace(std::string const&) {}
};
#ifdef SNPLIB_SPDLOGGER
/* SPDLOG-library based advanced single/multithreaded logger */
class snplib_spdlog_logger_t
{
protected:
std::shared_ptr<spdlog::logger> _loggerSPtr;
std::list<std::string> _currentLogPatternRange{};
std::string _currentLogPattern{};
public:
// [year-month-day time.millisecs][log-level]: log-message
constexpr static std::array LOGGER_DEFAULT_FORMAT = {std::string_view{"[%Y-%m-%d %T.%e]"}, std::string_view{"[%l]"},
std::string_view{": "}, std::string_view{"%v"}};
template <std::ranges::input_range R = decltype(LOGGER_DEFAULT_FORMAT)>
requires snplib_input_char_range_c<std::ranges::range_value_t<R>>
snplib_spdlog_logger_t(std::shared_ptr<spdlog::logger> logger, R&& pattern_range = LOGGER_DEFAULT_FORMAT)
: _loggerSPtr(logger)
{
if (std::distance(pattern_range.begin(), pattern_range.end())) {
std::ranges::copy(
pattern_range | std::views::transform([](const auto& el) { return std::string(el.begin(), el.end()); }),
std::back_inserter(_currentLogPatternRange));
} else {
std::ranges::copy(LOGGER_DEFAULT_FORMAT | std::views::transform([](const auto& el) {
return std::string(el.begin(), el.end());
}),
std::back_inserter(_currentLogPatternRange));
}
std::ranges::copy(std::views::join(_currentLogPatternRange), std::back_inserter(_currentLogPattern));
_loggerSPtr->set_pattern(_currentLogPattern);
}
virtual ~snplib_spdlog_logger_t() = default;
void logMessage(spdlog::level::level_enum level, const std::string& msg)
{
_loggerSPtr->log(level, msg);
}
// specialized for given level methods
void logCritical(const std::string& msg)
{
logMessage(spdlog::level::critical, msg);
}
void logError(const std::string& msg)
{
logMessage(spdlog::level::err, msg);
}
void logWarn(const std::string& msg)
{
logMessage(spdlog::level::warn, msg);
}
void logInfo(const std::string& msg)
{
logMessage(spdlog::level::info, msg);
}
void logDebug(const std::string& msg)
{
logMessage(spdlog::level::debug, msg);
}
void logTrace(const std::string& msg)
{
logMessage(spdlog::level::trace, msg);
}
template <std::formattable<char>... ArgTs>
void logMessage(spdlog::level::level_enum level, spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(level, fmt, std::forward<ArgTs>(args)...);
}
template <std::formattable<char>... ArgTs>
void logCritical(spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(spdlog::level::critical, fmt, std::forward<ArgTs>(args)...);
}
template <std::formattable<char>... ArgTs>
void logError(spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(spdlog::level::err, fmt, std::forward<ArgTs>(args)...);
}
template <std::formattable<char>... ArgTs>
void logWarn(spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(spdlog::level::warn, fmt, std::forward<ArgTs>(args)...);
}
template <std::formattable<char>... ArgTs>
void logInfo(spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(spdlog::level::info, fmt, std::forward<ArgTs>(args)...);
}
template <std::formattable<char>... ArgTs>
void logDebug(spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(spdlog::level::debug, fmt, std::forward<ArgTs>(args)...);
}
template <std::formattable<char>... ArgTs>
void logTrace(spdlog::format_string_t<ArgTs...> fmt, ArgTs&&... args)
{
_loggerSPtr->log(spdlog::level::trace, fmt, std::forward<ArgTs>(args)...);
}
// 'after_idx' is 0-based index!
void addMarkToPatternIdx(snplib_input_char_range_c auto&& mark, size_t after_idx = 1)
requires(!std::is_pointer_v<std::decay_t<decltype(mark)>>)
{
if constexpr (std::is_pointer_v<std::decay_t<decltype(mark)>>) {
addMarkToPatternIdx(std::string_view(mark), after_idx);
} else {
if (!std::distance(mark.begin(), mark.end())) {
return;
}
auto it = _currentLogPatternRange.begin();
size_t idx = 0;
while (it != _currentLogPatternRange.end()) {
++it;
if (idx == after_idx)
break;
++idx;
}
_currentLogPatternRange.emplace(it, mark.begin(), mark.end());
_currentLogPattern.clear();
std::ranges::copy(std::views::join(_currentLogPatternRange), std::back_inserter(_currentLogPattern));
_loggerSPtr->set_pattern(_currentLogPattern);
}
}
};
static_assert(snplib_logger_c<snplib_spdlog_logger_t>);
#endif
} // namespace snplib

2
include/snipplib/utils/snplib_utils.h
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@@ -1,4 +1,6 @@
#pragma once
#include "snplib_hash.h"
#include "snplib_keyvalue_expr.h"
#include "snplib_logger.h"
#include "snplib_string.h"