spdlog/include/spdlog/common.h
2019-03-29 14:46:31 +03:00

250 lines
6.3 KiB
C++

//
// Copyright(c) 2015 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
#pragma once
#include "spdlog/tweakme.h"
#include <atomic>
#include <chrono>
#include <functional>
#include <initializer_list>
#include <memory>
#include <stdexcept>
#include <string>
#include <cstring>
#include <type_traits>
#include <unordered_map>
#if defined(SPDLOG_WCHAR_FILENAMES) || defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT)
#include <codecvt>
#include <locale>
#endif
#include "spdlog/details/null_mutex.h"
#include "spdlog/fmt/fmt.h"
// visual studio upto 2013 does not support noexcept nor constexpr
#if defined(_MSC_VER) && (_MSC_VER < 1900)
#define SPDLOG_NOEXCEPT throw()
#define SPDLOG_CONSTEXPR
#else
#define SPDLOG_NOEXCEPT noexcept
#define SPDLOG_CONSTEXPR constexpr
#endif
#if defined(__GNUC__) || defined(__clang__)
#define SPDLOG_DEPRECATED __attribute__((deprecated))
#elif defined(_MSC_VER)
#define SPDLOG_DEPRECATED __declspec(deprecated)
#else
#define SPDLOG_DEPRECATED
#endif
// disable thread local on msvc 2013
#ifndef SPDLOG_NO_TLS
#if (defined(_MSC_VER) && (_MSC_VER < 1900)) || defined(__cplusplus_winrt)
#define SPDLOG_NO_TLS 1
#endif
#endif
// Get the basename of __FILE__ (at compile time if possible)
#if FMT_HAS_FEATURE(__builtin_strrchr)
#define SPDLOG_STRRCHR(str, sep) __builtin_strrchr(str, sep)
#else
#define SPDLOG_STRRCHR(str, sep) strrchr(str, sep)
#endif //__builtin_strrchr not defined
#ifdef _WIN32
#define SPDLOG_FILE_BASENAME(file) SPDLOG_STRRCHR("\\" file, '\\') + 1
#else
#define SPDLOG_FILE_BASENAME(file) SPDLOG_STRRCHR("/" file, '/') + 1
#endif
#ifndef SPDLOG_FUNCTION
#define SPDLOG_FUNCTION __FUNCTION__
#endif
namespace spdlog {
class formatter;
namespace sinks {
class sink;
}
using log_clock = std::chrono::system_clock;
using sink_ptr = std::shared_ptr<sinks::sink>;
using sinks_init_list = std::initializer_list<sink_ptr>;
using log_err_handler = std::function<void(const std::string &err_msg)>;
// string_view type - either std::string_view or fmt::string_view (pre c++17)
#if defined(FMT_USE_STD_STRING_VIEW)
using string_view_t = std::string_view;
#else
using string_view_t = fmt::string_view;
#endif
#if defined(SPDLOG_NO_ATOMIC_LEVELS)
using level_t = details::null_atomic_int;
#else
using level_t = std::atomic<int>;
#endif
#define SPDLOG_LEVEL_TRACE 0
#define SPDLOG_LEVEL_DEBUG 1
#define SPDLOG_LEVEL_INFO 2
#define SPDLOG_LEVEL_WARN 3
#define SPDLOG_LEVEL_ERROR 4
#define SPDLOG_LEVEL_CRITICAL 5
#define SPDLOG_LEVEL_OFF 6
#if !defined(SPDLOG_ACTIVE_LEVEL)
#define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_INFO
#endif
// Log level enum
namespace level {
enum level_enum
{
trace = SPDLOG_LEVEL_TRACE,
debug = SPDLOG_LEVEL_DEBUG,
info = SPDLOG_LEVEL_INFO,
warn = SPDLOG_LEVEL_WARN,
err = SPDLOG_LEVEL_ERROR,
critical = SPDLOG_LEVEL_CRITICAL,
off = SPDLOG_LEVEL_OFF,
};
#if !defined(SPDLOG_LEVEL_NAMES)
#define SPDLOG_LEVEL_NAMES \
{ \
"trace", "debug", "info", "warning", "error", "critical", "off" \
}
#endif
static string_view_t level_string_views[] SPDLOG_LEVEL_NAMES;
#if !defined(SPDLOG_SHORT_LEVEL_NAMES)
#define SPDLOG_SHORT_LEVEL_NAMES \
{ \
"T", "D", "I", "W", "E", "C", "O" \
}
#endif
static const char *short_level_names[] SPDLOG_SHORT_LEVEL_NAMES;
inline string_view_t &to_string_view(spdlog::level::level_enum l) SPDLOG_NOEXCEPT
{
return level_string_views[l];
}
inline const char *to_short_c_str(spdlog::level::level_enum l) SPDLOG_NOEXCEPT
{
return short_level_names[l];
}
inline spdlog::level::level_enum from_str(const std::string &name) SPDLOG_NOEXCEPT
{
int level = 0;
for (const auto &level_str : level_string_views)
{
if (level_str == name)
{
return static_cast<level::level_enum>(level);
}
level++;
}
return level::off;
}
using level_hasher = std::hash<int>;
} // namespace level
//
// Pattern time - specific time getting to use for pattern_formatter.
// local time by default
//
enum class pattern_time_type
{
local, // log localtime
utc // log utc
};
//
// Log exception
//
class spdlog_ex : public std::exception
{
public:
explicit spdlog_ex(std::string msg)
: msg_(std::move(msg))
{
}
spdlog_ex(const std::string &msg, int last_errno)
{
fmt::memory_buffer outbuf;
fmt::format_system_error(outbuf, last_errno, msg);
msg_ = fmt::to_string(outbuf);
}
const char *what() const SPDLOG_NOEXCEPT override
{
return msg_.c_str();
}
private:
std::string msg_;
};
//
// wchar support for windows file names (SPDLOG_WCHAR_FILENAMES must be defined)
//
#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
using filename_t = std::wstring;
#else
using filename_t = std::string;
#endif
struct source_loc
{
SPDLOG_CONSTEXPR source_loc()
: filename{""}
, line{0}
, funcname{""}
{
}
SPDLOG_CONSTEXPR source_loc(const char *filename_in, int line_in, const char *funcname_in)
: filename{filename_in}
, line{static_cast<uint32_t>(line_in)}
, funcname{funcname_in}
{
}
SPDLOG_CONSTEXPR bool empty() const SPDLOG_NOEXCEPT
{
return line == 0;
}
const char *filename;
uint32_t line;
const char *funcname;
};
namespace details {
// make_unique support for pre c++14
#if __cplusplus >= 201402L // C++14 and beyond
using std::make_unique;
#else
template<typename T, typename... Args>
std::unique_ptr<T> make_unique(Args &&... args)
{
static_assert(!std::is_array<T>::value, "arrays not supported");
return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}
#endif
} // namespace details
} // namespace spdlog