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fix support for utf8 logging under win32

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This commit is contained in:
gabime 2019-04-05 23:34:55 +03:00
parent e9f34fbd26
commit 2aceb13f3e
5 changed files with 184 additions and 162 deletions
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2
example/example.cpp
View File

@ -14,5 +14,5 @@ spdlog::logger *get_logger();
int main(int, char *[])
{
auto *l = get_logger();
l->info("HE LO ", "GA");
l->info(L"HEllo {}", L"HGFS");
}

5
include/spdlog/details/os.h
View File

@ -79,6 +79,11 @@ bool is_color_terminal() SPDLOG_NOEXCEPT;
// Detrmine if the terminal attached
// Source: https://github.com/agauniyal/rang/
bool in_terminal(FILE *file) SPDLOG_NOEXCEPT;
#if defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) && defined(_WIN32)
void wbuf_to_utf8buf(const fmt::wmemory_buffer &wbuf, fmt::memory_buffer &target);
#endif
} // namespace os
} // namespace details
} // namespace spdlog

173
include/spdlog/logger.h
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@ -20,6 +20,10 @@
#include "spdlog/common.h"
#include "spdlog/details/log_msg.h"
#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
#include "spdlog/details/os.h"
#endif
#include <memory>
#include <string>
#include <vector>
@ -79,6 +83,7 @@ public:
{
log(source_loc{}, lvl, fmt, args...);
}
void log(source_loc loc, level::level_enum lvl, const char *msg);
void log(level::level_enum lvl, const char *msg);
@ -118,96 +123,6 @@ public:
log(level::critical, fmt, args...);
}
#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
#ifndef _WIN32
#error SPDLOG_WCHAR_TO_UTF8_SUPPORT only supported on windows
#else
inline void wbuf_to_utf8buf(const fmt::wmemory_buffer &wbuf, fmt::memory_buffer &target)
{
int wbuf_size = static_cast<int>(wbuf.size());
if (wbuf_size == 0)
{
return;
}
auto result_size = ::WideCharToMultiByte(CP_UTF8, 0, wbuf.data(), wbuf_size, NULL, 0, NULL, NULL);
if (result_size > 0)
{
target.resize(result_size);
::WideCharToMultiByte(CP_UTF8, 0, wbuf.data(), wbuf_size, &target.data()[0], result_size, NULL, NULL);
}
else
{
throw spdlog::spdlog_ex(fmt::format("WideCharToMultiByte failed. Last error: {}", ::GetLastError()));
}
}
template<typename... Args>
void log(source_loc source, level::level_enum lvl, const wchar_t *fmt, const Args &... args)
{
if (!should_log(lvl))
{
return;
}
try
{
// format to wmemory_buffer and convert to utf8
using details::fmt_helper::to_string_view;
fmt::wmemory_buffer wbuf;
fmt::format_to(wbuf, fmt, args...);
fmt::memory_buffer buf;
wbuf_to_utf8buf(wbuf, buf);
details::log_msg log_msg(source, &name_, lvl, to_string_view(buf));
sink_it_(log_msg);
}
SPDLOG_CATCH_AND_HANDLE
}
template<typename... Args>
void log(level::level_enum lvl, const wchar_t *fmt, const Args &... args)
{
log(source_loc{}, lvl, fmt, args...);
}
template<typename... Args>
void trace(const wchar_t *fmt, const Args &... args)
{
log(level::trace, fmt, args...);
}
template<typename... Args>
void debug(const wchar_t *fmt, const Args &... args)
{
log(level::debug, fmt, args...);
}
template<typename... Args>
void info(const wchar_t *fmt, const Args &... args)
{
log(level::info, fmt, args...);
}
template<typename... Args>
void warn(const wchar_t *fmt, const Args &... args)
{
log(level::warn, fmt, args...);
}
template<typename... Args>
void error(const wchar_t *fmt, const Args &... args)
{
log(level::err, fmt, args...);
}
template<typename... Args>
void critical(const wchar_t *fmt, const Args &... args)
{
log(level::critical, fmt, args...);
}
#endif // _WIN32
#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
template<typename T>
void log(level::level_enum lvl, const T &msg)
@ -300,6 +215,82 @@ public:
log(level::critical, msg);
}
#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
#ifndef _WIN32
#error SPDLOG_WCHAR_TO_UTF8_SUPPORT only supported on windows
#else
template<typename... Args>
void log(source_loc source, level::level_enum lvl, const wchar_t *fmt, const Args &... args)
{
if (!should_log(lvl))
{
return;
}
try
{
// format to wmemory_buffer and convert to utf8
fmt::wmemory_buffer wbuf;
fmt::format_to(wbuf, fmt, args...);
fmt::memory_buffer buf;
details::os::wbuf_to_utf8buf(wbuf, buf);
details::log_msg log_msg(source, &name_, lvl, string_view_t(buf.data(), buf.size()));
sink_it_(log_msg);
}
catch (const std::exception &ex)
{
err_handler_(ex.what());
}
catch (...)
{
err_handler_("Unknown exception in logger");
}
}
template<typename... Args>
void log(level::level_enum lvl, const wchar_t *fmt, const Args &... args)
{
log(source_loc{}, lvl, fmt, args...);
}
template<typename... Args>
void trace(const wchar_t *fmt, const Args &... args)
{
log(level::trace, fmt, args...);
}
template<typename... Args>
void debug(const wchar_t *fmt, const Args &... args)
{
log(level::debug, fmt, args...);
}
template<typename... Args>
void info(const wchar_t *fmt, const Args &... args)
{
log(level::info, fmt, args...);
}
template<typename... Args>
void warn(const wchar_t *fmt, const Args &... args)
{
log(level::warn, fmt, args...);
}
template<typename... Args>
void error(const wchar_t *fmt, const Args &... args)
{
log(level::err, fmt, args...);
}
template<typename... Args>
void critical(const wchar_t *fmt, const Args &... args)
{
log(level::critical, fmt, args...);
}
#endif // _WIN32
#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
bool should_log(level::level_enum msg_level) const;
void set_level(level::level_enum log_level);
@ -350,6 +341,8 @@ public:
spdlog::level_t level_{spdlog::logger::default_level()};
spdlog::level_t flush_level_{level::off};
void (*custom_err_handler_)(const std::string &msg) {nullptr};
};
} // namespace spdlog

24
src/os.cpp
View File

@ -397,6 +397,30 @@ SPDLOG_INLINE bool in_terminal(FILE *file) SPDLOG_NOEXCEPT
return isatty(fileno(file)) != 0;
#endif
}
#if defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) && defined(_WIN32)
SPDLOG_INLINE void wbuf_to_utf8buf(const fmt::wmemory_buffer &wbuf, fmt::memory_buffer &target)
{
int wbuf_size = static_cast<int>(wbuf.size());
if (wbuf_size == 0)
{
return;
}
auto result_size = ::WideCharToMultiByte(CP_UTF8, 0, wbuf.data(), wbuf_size, NULL, 0, NULL, NULL);
if (result_size > 0)
{
target.resize(result_size);
::WideCharToMultiByte(CP_UTF8, 0, wbuf.data(), wbuf_size, &target.data()[0], result_size, NULL, NULL);
}
else
{
throw spdlog::spdlog_ex(fmt::format("WideCharToMultiByte failed. Last error: {}", ::GetLastError()));
}
}
#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT) && _WIN32
} // namespace os
} // namespace details
} // namespace spdlog