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Improve UTF-8 handling on Windows

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This commit is contained in:
Victor Zverovich 2019-12-22 08:58:00 -08:00
parent 3ca9533f38
commit dac9a7f99d
2 changed files with 25 additions and 9 deletions
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7
include/fmt/core.h
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@ -208,6 +208,13 @@
# define FMT_USE_EXPERIMENTAL_STRING_VIEW
#endif
#ifndef FMT_UNICODE
# define FMT_UNICODE 0
#endif
#if FMT_UNICODE
# pragma execution_character_set("utf-8")
#endif
FMT_BEGIN_NAMESPACE
// Implementations of enable_if_t and other metafunctions for pre-C++14 systems.

27
include/fmt/format-inl.h
View File

@ -21,6 +21,11 @@
# include <locale>
#endif
#if FMT_UNICODE
#include <windows.h>
#include <io.h>
#endif
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable : 4702) // unreachable code
@ -1336,20 +1341,24 @@ FMT_FUNC void report_system_error(int error_code,
report_error(format_system_error, error_code, message);
}
#ifndef FMT_UNICODE
# define FMT_UNICODE 0
#endif
FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) {
memory_buffer buffer;
internal::vformat_to(buffer, format_str,
basic_format_args<buffer_context<char>>(args));
#if FMT_UNICODE
internal::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size()));
std::fputws(u16.c_str(), f);
#else
internal::fwrite_fully(buffer.data(), 1, buffer.size(), f);
#if defined(_WIN32) && FMT_UNICODE
auto fd = _fileno(f);
if (_isatty(fd)) {
internal::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size()));
auto written = DWORD();
if (!WriteConsoleW(
reinterpret_cast<HANDLE>(_get_osfhandle(fd)),
u16.c_str(), u16.size(), &written, nullptr)) {
throw format_error("failed to write to console");
}
return;
}
#endif
internal::fwrite_fully(buffer.data(), 1, buffer.size(), f);
}
FMT_FUNC void vprint(string_view format_str, format_args args) {