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Support C++20 std::format as an alternative to fmtlib

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This commit is contained in:
Charless Milette
2021-11-13 11:29:05 -05:00
parent ff9313e6dd
commit 44a4517e2b
34 changed files with 445 additions and 143 deletions
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48
include/spdlog/common.h
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@@ -16,6 +16,10 @@
#include <functional>
#include <cstdio>
#ifdef SPDLOG_USE_STD_FORMAT
#include <string_view>
#endif
#ifdef SPDLOG_COMPILED_LIB
# undef SPDLOG_HEADER_ONLY
# if defined(_WIN32) && defined(SPDLOG_SHARED_LIB)
@@ -36,14 +40,15 @@
#include <spdlog/fmt/fmt.h>
// backward compatibility with fmt versions older than 8
#if FMT_VERSION >= 80000
# define SPDLOG_FMT_RUNTIME(format_string) fmt::runtime(format_string)
# if defined(SPDLOG_WCHAR_FILENAMES) || defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT)
# include <spdlog/fmt/xchar.h>
#ifndef SPDLOG_USE_STD_FORMAT
# if FMT_VERSION >= 80000 // backward compatibility with fmt versions older than 8
# define SPDLOG_FMT_RUNTIME(format_string) fmt::runtime(format_string)
# if defined(SPDLOG_WCHAR_FILENAMES) || defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT)
# include <spdlog/fmt/xchar.h>
# endif
# else
# define SPDLOG_FMT_RUNTIME(format_string) format_string
# endif
#else
# define SPDLOG_FMT_RUNTIME(format_string) format_string
#endif
// visual studio upto 2013 does not support noexcept nor constexpr
@@ -112,11 +117,39 @@ 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 err_handler = std::function<void(const std::string &err_msg)>;
#ifdef SPDLOG_USE_STD_FORMAT
namespace fmt_lib = std;
using string_view_t = std::string_view;
using wstring_view_t = std::wstring_view;
using memory_buf_t = std::string;
using wmemory_buf_t = std::wstring;
template<typename... Args>
using format_string_t = std::string_view;
template<typename... Args>
using wformat_string_t = std::wstring_view;
template<class T, class Char = char>
struct is_convertible_to_basic_format_string
: std::integral_constant<bool,
std::is_convertible<T, std::basic_string_view<Char>>::value>
{};
#else
namespace fmt_lib = fmt;
using string_view_t = fmt::basic_string_view<char>;
using wstring_view_t = fmt::basic_string_view<wchar_t>;
using memory_buf_t = fmt::basic_memory_buffer<char, 250>;
using wmemory_buf_t = fmt::basic_memory_buffer<wchar_t, 250>;
template<typename... Args>
using format_string_t = fmt::format_string<Args...>;
template<typename... Args>
using wformat_string_t = fmt::wformat_string<Args...>;
template<class T>
using remove_cvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
@@ -127,6 +160,7 @@ struct is_convertible_to_basic_format_string
: std::integral_constant<bool,
std::is_convertible<T, fmt::basic_string_view<Char>>::value || std::is_same<remove_cvref_t<T>, fmt::basic_runtime<Char>>::value>
{};
#endif
#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
# ifndef _WIN32