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Upgraded to fmt 5.1.0

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gabime 2018-07-08 11:03:43 +03:00
parent 887326e715
commit f4771be70e
9 changed files with 5382 additions and 6436 deletions
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1235
include/spdlog/fmt/bundled/core.h
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410
include/spdlog/fmt/bundled/format-inl.h
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@ -21,47 +21,45 @@
#include <locale> #include <locale>
#if defined(_WIN32) && defined(__MINGW32__) #if defined(_WIN32) && defined(__MINGW32__)
#include <cstring> # include <cstring>
#endif #endif
#if FMT_USE_WINDOWS_H #if FMT_USE_WINDOWS_H
#if !defined(FMT_HEADER_ONLY) && !defined(WIN32_LEAN_AND_MEAN) # if !defined(FMT_HEADER_ONLY) && !defined(WIN32_LEAN_AND_MEAN)
#define WIN32_LEAN_AND_MEAN # define WIN32_LEAN_AND_MEAN
#endif # endif
#if defined(NOMINMAX) || defined(FMT_WIN_MINMAX) # if defined(NOMINMAX) || defined(FMT_WIN_MINMAX)
#include <windows.h> # include <windows.h>
#else # else
#define NOMINMAX # define NOMINMAX
#include <windows.h> # include <windows.h>
#undef NOMINMAX # undef NOMINMAX
#endif # endif
#endif #endif
#if FMT_EXCEPTIONS #if FMT_EXCEPTIONS
#define FMT_TRY try # define FMT_TRY try
#define FMT_CATCH(x) catch (x) # define FMT_CATCH(x) catch (x)
#else #else
#define FMT_TRY if (true) # define FMT_TRY if (true)
#define FMT_CATCH(x) if (false) # define FMT_CATCH(x) if (false)
#endif #endif
#ifdef _MSC_VER #ifdef _MSC_VER
#pragma warning(push) # pragma warning(push)
#pragma warning(disable : 4127) // conditional expression is constant # pragma warning(disable: 4127) // conditional expression is constant
#pragma warning(disable : 4702) // unreachable code # pragma warning(disable: 4702) // unreachable code
// Disable deprecation warning for strerror. The latter is not called but // Disable deprecation warning for strerror. The latter is not called but
// MSVC fails to detect it. // MSVC fails to detect it.
#pragma warning(disable : 4996) # pragma warning(disable: 4996)
#endif #endif
// Dummy implementations of strerror_r and strerror_s called if corresponding // Dummy implementations of strerror_r and strerror_s called if corresponding
// system functions are not available. // system functions are not available.
inline fmt::internal::null<> strerror_r(int, char *, ...) inline fmt::internal::null<> strerror_r(int, char *, ...) {
{
return fmt::internal::null<>(); return fmt::internal::null<>();
} }
inline fmt::internal::null<> strerror_s(char *, std::size_t, ...) inline fmt::internal::null<> strerror_s(char *, std::size_t, ...) {
{
return fmt::internal::null<>(); return fmt::internal::null<>();
} }
@ -70,28 +68,24 @@ FMT_BEGIN_NAMESPACE
namespace { namespace {
#ifndef _MSC_VER #ifndef _MSC_VER
#define FMT_SNPRINTF snprintf # define FMT_SNPRINTF snprintf
#else // _MSC_VER #else // _MSC_VER
inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) {
{
va_list args; va_list args;
va_start(args, format); va_start(args, format);
int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
va_end(args); va_end(args);
return result; return result;
} }
#define FMT_SNPRINTF fmt_snprintf # define FMT_SNPRINTF fmt_snprintf
#endif // _MSC_VER #endif // _MSC_VER
#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) #if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
#define FMT_SWPRINTF snwprintf # define FMT_SWPRINTF snwprintf
#else #else
#define FMT_SWPRINTF swprintf # define FMT_SWPRINTF swprintf
#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) #endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
const char RESET_COLOR[] = "\x1b[0m";
const wchar_t WRESET_COLOR[] = L"\x1b[0m";
typedef void (*FormatFunc)(internal::buffer &, int, string_view); typedef void (*FormatFunc)(internal::buffer &, int, string_view);
// Portable thread-safe version of strerror. // Portable thread-safe version of strerror.
@ -103,12 +97,11 @@ typedef void (*FormatFunc)(internal::buffer &, int, string_view);
// ERANGE - buffer is not large enough to store the error message // ERANGE - buffer is not large enough to store the error message
// other - failure // other - failure
// Buffer should be at least of size 1. // Buffer should be at least of size 1.
int safe_strerror(int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT int safe_strerror(
{ int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT {
FMT_ASSERT(buffer != FMT_NULL && buffer_size != 0, "invalid buffer"); FMT_ASSERT(buffer != FMT_NULL && buffer_size != 0, "invalid buffer");
class dispatcher class dispatcher {
{
private: private:
int error_code_; int error_code_;
char *&buffer_; char *&buffer_;
@ -118,15 +111,13 @@ int safe_strerror(int error_code, char *&buffer, std::size_t buffer_size) FMT_NO
void operator=(const dispatcher &) {} void operator=(const dispatcher &) {}
// Handle the result of XSI-compliant version of strerror_r. // Handle the result of XSI-compliant version of strerror_r.
int handle(int result) int handle(int result) {
{
// glibc versions before 2.13 return result in errno. // glibc versions before 2.13 return result in errno.
return result == -1 ? errno : result; return result == -1 ? errno : result;
} }
// Handle the result of GNU-specific version of strerror_r. // Handle the result of GNU-specific version of strerror_r.
int handle(char *message) int handle(char *message) {
{
// If the buffer is full then the message is probably truncated. // If the buffer is full then the message is probably truncated.
if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
return ERANGE; return ERANGE;
@ -135,21 +126,19 @@ int safe_strerror(int error_code, char *&buffer, std::size_t buffer_size) FMT_NO
} }
// Handle the case when strerror_r is not available. // Handle the case when strerror_r is not available.
int handle(internal::null<>) int handle(internal::null<>) {
{
return fallback(strerror_s(buffer_, buffer_size_, error_code_)); return fallback(strerror_s(buffer_, buffer_size_, error_code_));
} }
// Fallback to strerror_s when strerror_r is not available. // Fallback to strerror_s when strerror_r is not available.
int fallback(int result) int fallback(int result) {
{
// If the buffer is full then the message is probably truncated. // If the buffer is full then the message is probably truncated.
return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? ERANGE : result; return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
ERANGE : result;
} }
// Fallback to strerror if strerror_r and strerror_s are not available. // Fallback to strerror if strerror_r and strerror_s are not available.
int fallback(internal::null<>) int fallback(internal::null<>) {
{
errno = 0; errno = 0;
buffer_ = strerror(error_code_); buffer_ = strerror(error_code_);
return errno; return errno;
@ -157,22 +146,17 @@ int safe_strerror(int error_code, char *&buffer, std::size_t buffer_size) FMT_NO
public: public:
dispatcher(int err_code, char *&buf, std::size_t buf_size) dispatcher(int err_code, char *&buf, std::size_t buf_size)
: error_code_(err_code) : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
, buffer_(buf)
, buffer_size_(buf_size)
{
}
int run() int run() {
{
return handle(strerror_r(error_code_, buffer_, buffer_size_)); return handle(strerror_r(error_code_, buffer_, buffer_size_));
} }
}; };
return dispatcher(error_code, buffer, buffer_size).run(); return dispatcher(error_code, buffer, buffer_size).run();
} }
void format_error_code(internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT void format_error_code(internal::buffer &out, int error_code,
{ string_view message) FMT_NOEXCEPT {
// Report error code making sure that the output fits into // Report error code making sure that the output fits into
// inline_buffer_size to avoid dynamic memory allocation and potential // inline_buffer_size to avoid dynamic memory allocation and potential
// bad_alloc. // bad_alloc.
@ -183,15 +167,13 @@ void format_error_code(internal::buffer &out, int error_code, string_view messag
std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
typedef internal::int_traits<int>::main_type main_type; typedef internal::int_traits<int>::main_type main_type;
main_type abs_value = static_cast<main_type>(error_code); main_type abs_value = static_cast<main_type>(error_code);
if (internal::is_negative(error_code)) if (internal::is_negative(error_code)) {
{
abs_value = 0 - abs_value; abs_value = 0 - abs_value;
++error_code_size; ++error_code_size;
} }
error_code_size += internal::count_digits(abs_value); error_code_size += internal::count_digits(abs_value);
writer w(out); writer w(out);
if (message.size() <= inline_buffer_size - error_code_size) if (message.size() <= inline_buffer_size - error_code_size) {
{
w.write(message); w.write(message);
w.write(SEP); w.write(SEP);
} }
@ -200,8 +182,8 @@ void format_error_code(internal::buffer &out, int error_code, string_view messag
assert(out.size() <= inline_buffer_size); assert(out.size() <= inline_buffer_size);
} }
void report_error(FormatFunc func, int error_code, string_view message) FMT_NOEXCEPT void report_error(FormatFunc func, int error_code,
{ string_view message) FMT_NOEXCEPT {
memory_buffer full_message; memory_buffer full_message;
func(full_message, error_code, message); func(full_message, error_code, message);
// Use Writer::data instead of Writer::c_str to avoid potential memory // Use Writer::data instead of Writer::c_str to avoid potential memory
@ -211,31 +193,23 @@ void report_error(FormatFunc func, int error_code, string_view message) FMT_NOEX
} }
} // namespace } // namespace
class locale class locale {
{ private:
private:
std::locale locale_; std::locale locale_;
public: public:
explicit locale(std::locale loc = std::locale()) explicit locale(std::locale loc = std::locale()) : locale_(loc) {}
: locale_(loc) std::locale get() { return locale_; }
{
}
std::locale get()
{
return locale_;
}
}; };
template<typename Char> template <typename Char>
FMT_FUNC Char internal::thousands_sep(locale_provider *lp) FMT_FUNC Char internal::thousands_sep(locale_provider *lp) {
{
std::locale loc = lp ? lp->locale().get() : std::locale(); std::locale loc = lp ? lp->locale().get() : std::locale();
return std::use_facet<std::numpunct<Char>>(loc).thousands_sep(); return std::use_facet<std::numpunct<Char>>(loc).thousands_sep();
} }
FMT_FUNC void system_error::init(int err_code, string_view format_str, format_args args) FMT_FUNC void system_error::init(
{ int err_code, string_view format_str, format_args args) {
error_code_ = err_code; error_code_ = err_code;
memory_buffer buffer; memory_buffer buffer;
format_system_error(buffer, err_code, vformat(format_str, args)); format_system_error(buffer, err_code, vformat(format_str, args));
@ -244,64 +218,101 @@ FMT_FUNC void system_error::init(int err_code, string_view format_str, format_ar
} }
namespace internal { namespace internal {
template<typename T> template <typename T>
int char_traits<char>::format_float(char *buffer, std::size_t size, const char *format, int precision, T value) int char_traits<char>::format_float(
{ char *buffer, std::size_t size, const char *format, int precision, T value) {
return precision < 0 ? FMT_SNPRINTF(buffer, size, format, value) : FMT_SNPRINTF(buffer, size, format, precision, value); return precision < 0 ?
FMT_SNPRINTF(buffer, size, format, value) :
FMT_SNPRINTF(buffer, size, format, precision, value);
} }
template<typename T> template <typename T>
int char_traits<wchar_t>::format_float(wchar_t *buffer, std::size_t size, const wchar_t *format, int precision, T value) int char_traits<wchar_t>::format_float(
{ wchar_t *buffer, std::size_t size, const wchar_t *format, int precision,
return precision < 0 ? FMT_SWPRINTF(buffer, size, format, value) : FMT_SWPRINTF(buffer, size, format, precision, value); T value) {
return precision < 0 ?
FMT_SWPRINTF(buffer, size, format, value) :
FMT_SWPRINTF(buffer, size, format, precision, value);
} }
template<typename T> template <typename T>
const char basic_data<T>::DIGITS[] = "0001020304050607080910111213141516171819" const char basic_data<T>::DIGITS[] =
"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839" "2021222324252627282930313233343536373839"
"4041424344454647484950515253545556575859" "4041424344454647484950515253545556575859"
"6061626364656667686970717273747576777879" "6061626364656667686970717273747576777879"
"8081828384858687888990919293949596979899"; "8081828384858687888990919293949596979899";
#define FMT_POWERS_OF_10(factor) \ #define FMT_POWERS_OF_10(factor) \
factor * 10, factor * 100, factor * 1000, factor * 10000, factor * 100000, factor * 1000000, factor * 10000000, factor * 100000000, \ factor * 10, \
factor * 100, \
factor * 1000, \
factor * 10000, \
factor * 100000, \
factor * 1000000, \
factor * 10000000, \
factor * 100000000, \
factor * 1000000000 factor * 1000000000
template<typename T> template <typename T>
const uint32_t basic_data<T>::POWERS_OF_10_32[] = {0, FMT_POWERS_OF_10(1)}; const uint32_t basic_data<T>::POWERS_OF_10_32[] = {
0, FMT_POWERS_OF_10(1)
};
template<typename T> template <typename T>
const uint64_t basic_data<T>::POWERS_OF_10_64[] = {0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ull), 10000000000000000000ull}; const uint64_t basic_data<T>::POWERS_OF_10_64[] = {
0,
FMT_POWERS_OF_10(1),
FMT_POWERS_OF_10(1000000000ull),
10000000000000000000ull
};
// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. // Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340.
// These are generated by support/compute-powers.py. // These are generated by support/compute-powers.py.
template<typename T> template <typename T>
const uint64_t basic_data<T>::POW10_SIGNIFICANDS[] = {0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, 0xcf42894a5dce35ea, const uint64_t basic_data<T>::POW10_SIGNIFICANDS[] = {
0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, 0x8dd01fad907ffc3c, 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, 0xcf42894a5dce35ea,
0xd3515c2831559a83, 0x9d71ac8fada6c9b5, 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, 0xc21094364dfb5637, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f,
0x9096ea6f3848984f, 0xd77485cb25823ac7, 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, 0x84c8d4dfd2c63f3b, 0xbe5691ef416bd60c, 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5,
0xc5dd44271ad3cdba, 0x936b9fcebb25c996, 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, 0xb5b5ada8aaff80b8, 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, 0xc21094364dfb5637,
0x87625f056c7c4a8b, 0xc9bcff6034c13053, 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, 0xf8a95fcf88747d94, 0x9096ea6f3848984f, 0xd77485cb25823ac7, 0xa086cfcd97bf97f4, 0xef340a98172aace5,
0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, 0xaa242499697392d3, 0xb23867fb2a35b28e, 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996,
0xfd87b5f28300ca0e, 0xbce5086492111aeb, 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, 0xe8d4a51000000000, 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, 0xb5b5ada8aaff80b8,
0xad78ebc5ac620000, 0x813f3978f8940984, 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, 0x9f4f2726179a2245, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, 0x964e858c91ba2655, 0xdff9772470297ebd,
0xed63a231d4c4fb27, 0xb0de65388cc8ada8, 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, 0xda01ee641a708dea, 0xa6dfbd9fb8e5b88f, 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b,
0xa26da3999aef774a, 0xf209787bb47d6b85, 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, 0x952ab45cfa97a0b3, 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, 0xaa242499697392d3,
0xde469fbd99a05fe3, 0xa59bc234db398c25, 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, 0xcc20ce9bd35c78a5, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, 0x8cbccc096f5088cc, 0xd1b71758e219652c,
0x98165af37b2153df, 0xe2a0b5dc971f303a, 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, 0x8bab8eefb6409c1a, 0x9c40000000000000, 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984,
0xd01fef10a657842c, 0x9b10a4e5e9913129, 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, 0xbf21e44003acdd2d, 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, 0x9f4f2726179a2245,
0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b}; 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, 0x83c7088e1aab65db, 0xc45d1df942711d9a,
0x924d692ca61be758, 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85,
0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, 0x952ab45cfa97a0b3,
0xde469fbd99a05fe3, 0xa59bc234db398c25, 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece,
0x88fcf317f22241e2, 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a,
0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, 0x8bab8eefb6409c1a,
0xd01fef10a657842c, 0x9b10a4e5e9913129, 0xe7109bfba19c0c9d, 0xac2820d9623bf429,
0x80444b5e7aa7cf85, 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841,
0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b
};
// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding // Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding
// to significands above. // to significands above.
template<typename T> template <typename T>
const int16_t basic_data<T>::POW10_EXPONENTS[] = {-1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, -927, -901, const int16_t basic_data<T>::POW10_EXPONENTS[] = {
-874, -847, -821, -794, -768, -741, -715, -688, -661, -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, -343, -316, -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954,
-289, -263, -236, -210, -183, -157, -130, -103, -77, -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, 242, 269, 295, 322, 348, 375, -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661,
402, 428, 455, 481, 508, 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369,
-343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77,
-50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216,
242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508,
534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800,
827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066
};
FMT_FUNC fp operator*(fp x, fp y) template <typename T> const char basic_data<T>::RESET_COLOR[] = "\x1b[0m";
{ template <typename T> const wchar_t basic_data<T>::WRESET_COLOR[] = L"\x1b[0m";
FMT_FUNC fp operator*(fp x, fp y) {
// Multiply 32-bit parts of significands. // Multiply 32-bit parts of significands.
uint64_t mask = (1ULL << 32) - 1; uint64_t mask = (1ULL << 32) - 1;
uint64_t a = x.f >> 32, b = x.f & mask; uint64_t a = x.f >> 32, b = x.f & mask;
@ -312,10 +323,10 @@ FMT_FUNC fp operator*(fp x, fp y)
return fp(ac + (ad >> 32) + (bc >> 32) + (mid >> 32), x.e + y.e + 64); return fp(ac + (ad >> 32) + (bc >> 32) + (mid >> 32), x.e + y.e + 64);
} }
FMT_FUNC fp get_cached_power(int min_exponent, int &pow10_exponent) FMT_FUNC fp get_cached_power(int min_exponent, int &pow10_exponent) {
{
const double one_over_log2_10 = 0.30102999566398114; // 1 / log2(10) const double one_over_log2_10 = 0.30102999566398114; // 1 / log2(10)
int index = static_cast<int>(std::ceil((min_exponent + fp::significand_size - 1) * one_over_log2_10)); int index = static_cast<int>(std::ceil(
(min_exponent + fp::significand_size - 1) * one_over_log2_10));
// Decimal exponent of the first (smallest) cached power of 10. // Decimal exponent of the first (smallest) cached power of 10.
const int first_dec_exp = -348; const int first_dec_exp = -348;
// Difference between two consecutive decimal exponents in cached powers of 10. // Difference between two consecutive decimal exponents in cached powers of 10.
@ -328,64 +339,63 @@ FMT_FUNC fp get_cached_power(int min_exponent, int &pow10_exponent)
#if FMT_USE_WINDOWS_H #if FMT_USE_WINDOWS_H
FMT_FUNC internal::utf8_to_utf16::utf8_to_utf16(string_view s) FMT_FUNC internal::utf8_to_utf16::utf8_to_utf16(string_view s) {
{
static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16"; static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
if (s.size() > INT_MAX) if (s.size() > INT_MAX)
FMT_THROW(windows_error(ERROR_INVALID_PARAMETER, ERROR_MSG)); FMT_THROW(windows_error(ERROR_INVALID_PARAMETER, ERROR_MSG));
int s_size = static_cast<int>(s.size()); int s_size = static_cast<int>(s.size());
if (s_size == 0) if (s_size == 0) {
{
// MultiByteToWideChar does not support zero length, handle separately. // MultiByteToWideChar does not support zero length, handle separately.
buffer_.resize(1); buffer_.resize(1);
buffer_[0] = 0; buffer_[0] = 0;
return; return;
} }
int length = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, FMT_NULL, 0); int length = MultiByteToWideChar(
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, FMT_NULL, 0);
if (length == 0) if (length == 0)
FMT_THROW(windows_error(GetLastError(), ERROR_MSG)); FMT_THROW(windows_error(GetLastError(), ERROR_MSG));
buffer_.resize(length + 1); buffer_.resize(length + 1);
length = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length); length = MultiByteToWideChar(
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length);
if (length == 0) if (length == 0)
FMT_THROW(windows_error(GetLastError(), ERROR_MSG)); FMT_THROW(windows_error(GetLastError(), ERROR_MSG));
buffer_[length] = 0; buffer_[length] = 0;
} }
FMT_FUNC internal::utf16_to_utf8::utf16_to_utf8(wstring_view s) FMT_FUNC internal::utf16_to_utf8::utf16_to_utf8(wstring_view s) {
{ if (int error_code = convert(s)) {
if (int error_code = convert(s)) FMT_THROW(windows_error(error_code,
{ "cannot convert string from UTF-16 to UTF-8"));
FMT_THROW(windows_error(error_code, "cannot convert string from UTF-16 to UTF-8"));
} }
} }
FMT_FUNC int internal::utf16_to_utf8::convert(wstring_view s) FMT_FUNC int internal::utf16_to_utf8::convert(wstring_view s) {
{
if (s.size() > INT_MAX) if (s.size() > INT_MAX)
return ERROR_INVALID_PARAMETER; return ERROR_INVALID_PARAMETER;
int s_size = static_cast<int>(s.size()); int s_size = static_cast<int>(s.size());
if (s_size == 0) if (s_size == 0) {
{
// WideCharToMultiByte does not support zero length, handle separately. // WideCharToMultiByte does not support zero length, handle separately.
buffer_.resize(1); buffer_.resize(1);
buffer_[0] = 0; buffer_[0] = 0;
return 0; return 0;
} }
int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, FMT_NULL, 0, FMT_NULL, FMT_NULL); int length = WideCharToMultiByte(
CP_UTF8, 0, s.data(), s_size, FMT_NULL, 0, FMT_NULL, FMT_NULL);
if (length == 0) if (length == 0)
return GetLastError(); return GetLastError();
buffer_.resize(length + 1); buffer_.resize(length + 1);
length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, FMT_NULL, FMT_NULL); length = WideCharToMultiByte(
CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, FMT_NULL, FMT_NULL);
if (length == 0) if (length == 0)
return GetLastError(); return GetLastError();
buffer_[length] = 0; buffer_[length] = 0;
return 0; return 0;
} }
FMT_FUNC void windows_error::init(int err_code, string_view format_str, format_args args) FMT_FUNC void windows_error::init(
{ int err_code, string_view format_str, format_args args) {
error_code_ = err_code; error_code_ = err_code;
memory_buffer buffer; memory_buffer buffer;
internal::format_windows_error(buffer, err_code, vformat(format_str, args)); internal::format_windows_error(buffer, err_code, vformat(format_str, args));
@ -393,22 +403,20 @@ FMT_FUNC void windows_error::init(int err_code, string_view format_str, format_a
base = std::runtime_error(to_string(buffer)); base = std::runtime_error(to_string(buffer));
} }
FMT_FUNC void internal::format_windows_error(internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT FMT_FUNC void internal::format_windows_error(
{ internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT {
FMT_TRY FMT_TRY {
{
wmemory_buffer buf; wmemory_buffer buf;
buf.resize(inline_buffer_size); buf.resize(inline_buffer_size);
for (;;) for (;;) {
{
wchar_t *system_message = &buf[0]; wchar_t *system_message = &buf[0];
int result = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, FMT_NULL, error_code, int result = FormatMessageW(
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), system_message, static_cast<uint32_t>(buf.size()), FMT_NULL); FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
if (result != 0) FMT_NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
{ system_message, static_cast<uint32_t>(buf.size()), FMT_NULL);
if (result != 0) {
utf16_to_utf8 utf8_message; utf16_to_utf8 utf8_message;
if (utf8_message.convert(system_message) == ERROR_SUCCESS) if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
{
writer w(out); writer w(out);
w.write(message); w.write(message);
w.write(": "); w.write(": ");
@ -421,25 +429,21 @@ FMT_FUNC void internal::format_windows_error(internal::buffer &out, int error_co
break; // Can't get error message, report error code instead. break; // Can't get error message, report error code instead.
buf.resize(buf.size() * 2); buf.resize(buf.size() * 2);
} }
} } FMT_CATCH(...) {}
FMT_CATCH(...) {}
format_error_code(out, error_code, message); format_error_code(out, error_code, message);
} }
#endif // FMT_USE_WINDOWS_H #endif // FMT_USE_WINDOWS_H
FMT_FUNC void format_system_error(internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT FMT_FUNC void format_system_error(
{ internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT {
FMT_TRY FMT_TRY {
{
memory_buffer buf; memory_buffer buf;
buf.resize(inline_buffer_size); buf.resize(inline_buffer_size);
for (;;) for (;;) {
{
char *system_message = &buf[0]; char *system_message = &buf[0];
int result = safe_strerror(error_code, system_message, buf.size()); int result = safe_strerror(error_code, system_message, buf.size());
if (result == 0) if (result == 0) {
{
writer w(out); writer w(out);
w.write(message); w.write(message);
w.write(": "); w.write(": ");
@ -450,85 +454,111 @@ FMT_FUNC void format_system_error(internal::buffer &out, int error_code, string_
break; // Can't get error message, report error code instead. break; // Can't get error message, report error code instead.
buf.resize(buf.size() * 2); buf.resize(buf.size() * 2);
} }
} } FMT_CATCH(...) {}
FMT_CATCH(...) {}
format_error_code(out, error_code, message); format_error_code(out, error_code, message);
} }
template<typename Char> template <typename Char>
void basic_fixed_buffer<Char>::grow(std::size_t) void basic_fixed_buffer<Char>::grow(std::size_t) {
{
FMT_THROW(std::runtime_error("buffer overflow")); FMT_THROW(std::runtime_error("buffer overflow"));
} }
FMT_FUNC void internal::error_handler::on_error(const char *message) FMT_FUNC void internal::error_handler::on_error(const char *message) {
{
FMT_THROW(format_error(message)); FMT_THROW(format_error(message));
} }
FMT_FUNC void report_system_error(int error_code, fmt::string_view message) FMT_NOEXCEPT FMT_FUNC void report_system_error(
{ int error_code, fmt::string_view message) FMT_NOEXCEPT {
report_error(format_system_error, error_code, message); report_error(format_system_error, error_code, message);
} }
#if FMT_USE_WINDOWS_H #if FMT_USE_WINDOWS_H
FMT_FUNC void report_windows_error(int error_code, fmt::string_view message) FMT_NOEXCEPT FMT_FUNC void report_windows_error(
{ int error_code, fmt::string_view message) FMT_NOEXCEPT {
report_error(internal::format_windows_error, error_code, message); report_error(internal::format_windows_error, error_code, message);
} }
#endif #endif
FMT_FUNC void vprint(std::FILE *f, string_view format_str, format_args args) FMT_FUNC void vprint(std::FILE *f, string_view format_str, format_args args) {
{
memory_buffer buffer; memory_buffer buffer;
vformat_to(buffer, format_str, args); vformat_to(buffer, format_str, args);
std::fwrite(buffer.data(), 1, buffer.size(), f); std::fwrite(buffer.data(), 1, buffer.size(), f);
} }
FMT_FUNC void vprint(std::FILE *f, wstring_view format_str, wformat_args args) FMT_FUNC void vprint(std::FILE *f, wstring_view format_str, wformat_args args) {
{
wmemory_buffer buffer; wmemory_buffer buffer;
vformat_to(buffer, format_str, args); vformat_to(buffer, format_str, args);
std::fwrite(buffer.data(), sizeof(wchar_t), buffer.size(), f); std::fwrite(buffer.data(), sizeof(wchar_t), buffer.size(), f);
} }
FMT_FUNC void vprint(string_view format_str, format_args args) FMT_FUNC void vprint(string_view format_str, format_args args) {
{
vprint(stdout, format_str, args); vprint(stdout, format_str, args);
} }
FMT_FUNC void vprint(wstring_view format_str, wformat_args args) FMT_FUNC void vprint(wstring_view format_str, wformat_args args) {
{
vprint(stdout, format_str, args); vprint(stdout, format_str, args);
} }
FMT_FUNC void vprint_colored(color c, string_view format, format_args args) #ifndef FMT_EXTENDED_COLORS
{ FMT_FUNC void vprint_colored(color c, string_view format, format_args args) {
char escape[] = "\x1b[30m"; char escape[] = "\x1b[30m";
escape[3] = static_cast<char>('0' + c); escape[3] = static_cast<char>('0' + c);
std::fputs(escape, stdout); std::fputs(escape, stdout);
vprint(format, args); vprint(format, args);
std::fputs(RESET_COLOR, stdout); std::fputs(internal::data::RESET_COLOR, stdout);
} }
FMT_FUNC void vprint_colored(color c, wstring_view format, wformat_args args) FMT_FUNC void vprint_colored(color c, wstring_view format, wformat_args args) {
{
wchar_t escape[] = L"\x1b[30m"; wchar_t escape[] = L"\x1b[30m";
escape[3] = static_cast<wchar_t>('0' + c); escape[3] = static_cast<wchar_t>('0' + c);
std::fputws(escape, stdout); std::fputws(escape, stdout);
vprint(format, args); vprint(format, args);
std::fputws(WRESET_COLOR, stdout); std::fputws(internal::data::WRESET_COLOR, stdout);
}
#else
namespace internal {
FMT_CONSTEXPR void to_esc(uint8_t c, char out[], int offset) {
out[offset + 0] = static_cast<char>('0' + c / 100);
out[offset + 1] = static_cast<char>('0' + c / 10 % 10);
out[offset + 2] = static_cast<char>('0' + c % 10);
}
} // namespace internal
FMT_FUNC void vprint_rgb(rgb fd, string_view format, format_args args) {
char escape_fd[] = "\x1b[38;2;000;000;000m";
internal::to_esc(fd.r, escape_fd, 7);
internal::to_esc(fd.g, escape_fd, 11);
internal::to_esc(fd.b, escape_fd, 15);
std::fputs(escape_fd, stdout);
vprint(format, args);
std::fputs(internal::data::RESET_COLOR, stdout);
} }
FMT_FUNC locale locale_provider::locale() FMT_FUNC void vprint_rgb(rgb fd, rgb bg, string_view format, format_args args) {
{ char escape_fd[] = "\x1b[38;2;000;000;000m"; // foreground color
return fmt::locale(); char escape_bg[] = "\x1b[48;2;000;000;000m"; // background color
internal::to_esc(fd.r, escape_fd, 7);
internal::to_esc(fd.g, escape_fd, 11);
internal::to_esc(fd.b, escape_fd, 15);
internal::to_esc(bg.r, escape_bg, 7);
internal::to_esc(bg.g, escape_bg, 11);
internal::to_esc(bg.b, escape_bg, 15);
std::fputs(escape_fd, stdout);
std::fputs(escape_bg, stdout);
vprint(format, args);
std::fputs(internal::data::RESET_COLOR, stdout);
} }
#endif
FMT_FUNC locale locale_provider::locale() { return fmt::locale(); }
FMT_END_NAMESPACE FMT_END_NAMESPACE
#ifdef _MSC_VER #ifdef _MSC_VER
#pragma warning(pop) # pragma warning(pop)
#endif #endif
#endif // FMT_FORMAT_INL_H_ #endif // FMT_FORMAT_INL_H_

46
include/spdlog/fmt/bundled/format.cc
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@ -1,46 +0,0 @@
// Formatting library for C++
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include "fmt/format-inl.h"
namespace fmt {
template struct internal::basic_data<void>;
// Explicit instantiations for char.
template FMT_API char internal::thousands_sep(locale_provider *lp);
template void basic_fixed_buffer<char>::grow(std::size_t);
template void internal::arg_map<format_context>::init(
const basic_format_args<format_context> &args);
template FMT_API int internal::char_traits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, double value);
template FMT_API int internal::char_traits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, long double value);
// Explicit instantiations for wchar_t.
template FMT_API wchar_t internal::thousands_sep(locale_provider *lp);
template void basic_fixed_buffer<wchar_t>::grow(std::size_t);
template void internal::arg_map<wformat_context>::init(const wformat_args &args);
template FMT_API int internal::char_traits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, double value);
template FMT_API int internal::char_traits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, long double value);
} // namespace fmt

3415
include/spdlog/fmt/bundled/format.h
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111
include/spdlog/fmt/bundled/ostream.h
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@ -14,22 +14,18 @@
FMT_BEGIN_NAMESPACE FMT_BEGIN_NAMESPACE
namespace internal { namespace internal {
template<class Char> template <class Char>
class formatbuf : public std::basic_streambuf<Char> class formatbuf : public std::basic_streambuf<Char> {
{ private:
private:
typedef typename std::basic_streambuf<Char>::int_type int_type; typedef typename std::basic_streambuf<Char>::int_type int_type;
typedef typename std::basic_streambuf<Char>::traits_type traits_type; typedef typename std::basic_streambuf<Char>::traits_type traits_type;
basic_buffer<Char> &buffer_; basic_buffer<Char> &buffer_;
public: public:
formatbuf(basic_buffer<Char> &buffer) formatbuf(basic_buffer<Char> &buffer) : buffer_(buffer) {}
: buffer_(buffer)
{
}
protected: protected:
// The put-area is actually always empty. This makes the implementation // The put-area is actually always empty. This makes the implementation
// simpler and has the advantage that the streambuf and the buffer are always // simpler and has the advantage that the streambuf and the buffer are always
// in sync and sputc never writes into uninitialized memory. The obvious // in sync and sputc never writes into uninitialized memory. The obvious
@ -37,43 +33,41 @@ protected:
// to overflow. There is no disadvantage here for sputn since this always // to overflow. There is no disadvantage here for sputn since this always
// results in a call to xsputn. // results in a call to xsputn.
int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE {
{
if (!traits_type::eq_int_type(ch, traits_type::eof())) if (!traits_type::eq_int_type(ch, traits_type::eof()))
buffer_.push_back(static_cast<Char>(ch)); buffer_.push_back(static_cast<Char>(ch));
return ch; return ch;
} }
std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE {
{
buffer_.append(s, s + count); buffer_.append(s, s + count);
return count; return count;
} }
}; };
template<typename Char> template <typename Char>
struct test_stream : std::basic_ostream<Char> struct test_stream : std::basic_ostream<Char> {
{ private:
private:
struct null; struct null;
// Hide all operator<< from std::basic_ostream<Char>. // Hide all operator<< from std::basic_ostream<Char>.
void operator<<(null); void operator<<(null);
}; };
// Checks if T has a user-defined operator<< (e.g. not a member of std::ostream). // Checks if T has a user-defined operator<< (e.g. not a member of std::ostream).
template<typename T, typename Char> template <typename T, typename Char>
class is_streamable class is_streamable {
{ private:
private: template <typename U>
template<typename U> static decltype(
static decltype(internal::declval<test_stream<Char> &>() << internal::declval<U>(), std::true_type()) test(int); internal::declval<test_stream<Char>&>()
<< internal::declval<U>(), std::true_type()) test(int);
template<typename> template <typename>
static std::false_type test(...); static std::false_type test(...);
typedef decltype(test<T>(0)) result; typedef decltype(test<T>(0)) result;
public: public:
// std::string operator<< is not considered user-defined because we handle strings // std::string operator<< is not considered user-defined because we handle strings
// specially. // specially.
static const bool value = result::value && !std::is_same<T, std::string>::value; static const bool value = result::value && !std::is_same<T, std::string>::value;
@ -81,23 +75,22 @@ public:
// Disable conversion to int if T has an overloaded operator<< which is a free // Disable conversion to int if T has an overloaded operator<< which is a free
// function (not a member of std::ostream). // function (not a member of std::ostream).
template<typename T, typename Char> template <typename T, typename Char>
class convert_to_int<T, Char, true> class convert_to_int<T, Char, true> {
{ public:
public: static const bool value =
static const bool value = convert_to_int<T, Char, false>::value && !is_streamable<T, Char>::value; convert_to_int<T, Char, false>::value && !is_streamable<T, Char>::value;
}; };
// Write the content of buf to os. // Write the content of buf to os.
template<typename Char> template <typename Char>
void write(std::basic_ostream<Char> &os, basic_buffer<Char> &buf) void write(std::basic_ostream<Char> &os, basic_buffer<Char> &buf) {
{
const Char *data = buf.data(); const Char *data = buf.data();
typedef std::make_unsigned<std::streamsize>::type UnsignedStreamSize; typedef std::make_unsigned<std::streamsize>::type UnsignedStreamSize;
UnsignedStreamSize size = buf.size(); UnsignedStreamSize size = buf.size();
UnsignedStreamSize max_size = internal::to_unsigned((std::numeric_limits<std::streamsize>::max)()); UnsignedStreamSize max_size =
do internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
{ do {
UnsignedStreamSize n = size <= max_size ? size : max_size; UnsignedStreamSize n = size <= max_size ? size : max_size;
os.write(data, static_cast<std::streamsize>(n)); os.write(data, static_cast<std::streamsize>(n));
data += n; data += n;
@ -105,9 +98,8 @@ void write(std::basic_ostream<Char> &os, basic_buffer<Char> &buf)
} while (size != 0); } while (size != 0);
} }
template<typename Char, typename T> template <typename Char, typename T>
void format_value(basic_buffer<Char> &buffer, const T &value) void format_value(basic_buffer<Char> &buffer, const T &value) {
{
internal::formatbuf<Char> format_buf(buffer); internal::formatbuf<Char> format_buf(buffer);
std::basic_ostream<Char> output(&format_buf); std::basic_ostream<Char> output(&format_buf);
output.exceptions(std::ios_base::failbit | std::ios_base::badbit); output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
@ -116,20 +108,19 @@ void format_value(basic_buffer<Char> &buffer, const T &value)
} }
// Disable builtin formatting of enums and use operator<< instead. // Disable builtin formatting of enums and use operator<< instead.
template<typename T> template <typename T>
struct format_enum<T, typename std::enable_if<std::is_enum<T>::value>::type> : std::false_type struct format_enum<T,
{ typename std::enable_if<std::is_enum<T>::value>::type> : std::false_type {};
};
} // namespace internal } // namespace internal
// Formats an object of type T that has an overloaded ostream operator<<. // Formats an object of type T that has an overloaded ostream operator<<.
template<typename T, typename Char> template <typename T, typename Char>
struct formatter<T, Char, typename std::enable_if<internal::is_streamable<T, Char>::value>::type> : formatter<basic_string_view<Char>, Char> struct formatter<T, Char,
{ typename std::enable_if<internal::is_streamable<T, Char>::value>::type>
: formatter<basic_string_view<Char>, Char> {
template<typename Context> template <typename Context>
auto format(const T &value, Context &ctx) -> decltype(ctx.out()) auto format(const T &value, Context &ctx) -> decltype(ctx.out()) {
{
basic_memory_buffer<Char> buffer; basic_memory_buffer<Char> buffer;
internal::format_value(buffer, value); internal::format_value(buffer, value);
basic_string_view<Char> str(buffer.data(), buffer.size()); basic_string_view<Char> str(buffer.data(), buffer.size());
@ -138,10 +129,10 @@ struct formatter<T, Char, typename std::enable_if<internal::is_streamable<T, Cha
} }
}; };
template<typename Char> template <typename Char>
inline void vprint( inline void vprint(std::basic_ostream<Char> &os,
std::basic_ostream<Char> &os, basic_string_view<Char> format_str, basic_format_args<typename buffer_context<Char>::type> args) basic_string_view<Char> format_str,
{ basic_format_args<typename buffer_context<Char>::type> args) {
basic_memory_buffer<Char> buffer; basic_memory_buffer<Char> buffer;
vformat_to(buffer, format_str, args); vformat_to(buffer, format_str, args);
internal::write(os, buffer); internal::write(os, buffer);
@ -155,15 +146,15 @@ inline void vprint(
fmt::print(cerr, "Don't {}!", "panic"); fmt::print(cerr, "Don't {}!", "panic");
\endrst \endrst
*/ */
template<typename... Args> template <typename... Args>
inline void print(std::ostream &os, string_view format_str, const Args &... args) inline void print(std::ostream &os, string_view format_str,
{ const Args & ... args) {
vprint<char>(os, format_str, make_format_args<format_context>(args...)); vprint<char>(os, format_str, make_format_args<format_context>(args...));
} }
template<typename... Args> template <typename... Args>
inline void print(std::wostream &os, wstring_view format_str, const Args &... args) inline void print(std::wostream &os, wstring_view format_str,
{ const Args & ... args) {
vprint<wchar_t>(os, format_str, make_format_args<wformat_context>(args...)); vprint<wchar_t>(os, format_str, make_format_args<wformat_context>(args...));
} }
FMT_END_NAMESPACE FMT_END_NAMESPACE

231
include/spdlog/fmt/bundled/posix.h
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@ -10,7 +10,7 @@
#if defined(__MINGW32__) || defined(__CYGWIN__) #if defined(__MINGW32__) || defined(__CYGWIN__)
// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/. // Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
#undef __STRICT_ANSI__ # undef __STRICT_ANSI__
#endif #endif
#include <errno.h> #include <errno.h>
@ -22,43 +22,42 @@
#include <cstddef> #include <cstddef>
#if defined __APPLE__ || defined(__FreeBSD__) #if defined __APPLE__ || defined(__FreeBSD__)
#include <xlocale.h> // for LC_NUMERIC_MASK on OS X # include <xlocale.h> // for LC_NUMERIC_MASK on OS X
#endif #endif
#include "format.h" #include "format.h"
#ifndef FMT_POSIX #ifndef FMT_POSIX
#if defined(_WIN32) && !defined(__MINGW32__) # if defined(_WIN32) && !defined(__MINGW32__)
// Fix warnings about deprecated symbols. // Fix warnings about deprecated symbols.
#define FMT_POSIX(call) _##call # define FMT_POSIX(call) _##call
#else # else
#define FMT_POSIX(call) call # define FMT_POSIX(call) call
#endif # endif
#endif #endif
// Calls to system functions are wrapped in FMT_SYSTEM for testability. // Calls to system functions are wrapped in FMT_SYSTEM for testability.
#ifdef FMT_SYSTEM #ifdef FMT_SYSTEM
#define FMT_POSIX_CALL(call) FMT_SYSTEM(call) # define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
#else #else
#define FMT_SYSTEM(call) call # define FMT_SYSTEM(call) call
#ifdef _WIN32 # ifdef _WIN32
// Fix warnings about deprecated symbols. // Fix warnings about deprecated symbols.
#define FMT_POSIX_CALL(call) ::_##call # define FMT_POSIX_CALL(call) ::_##call
#else # else
#define FMT_POSIX_CALL(call) ::call # define FMT_POSIX_CALL(call) ::call
#endif # endif
#endif #endif
// Retries the expression while it evaluates to error_result and errno // Retries the expression while it evaluates to error_result and errno
// equals to EINTR. // equals to EINTR.
#ifndef _WIN32 #ifndef _WIN32
#define FMT_RETRY_VAL(result, expression, error_result) \ # define FMT_RETRY_VAL(result, expression, error_result) \
do \ do { \
{ \
result = (expression); \ result = (expression); \
} while (result == error_result && errno == EINTR) } while (result == error_result && errno == EINTR)
#else #else
#define FMT_RETRY_VAL(result, expression, error_result) result = (expression) # define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
#endif #endif
#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1) #define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
@ -90,68 +89,50 @@ FMT_BEGIN_NAMESPACE
format(std::string("{}"), 42); format(std::string("{}"), 42);
\endrst \endrst
*/ */
template<typename Char> template <typename Char>
class basic_cstring_view class basic_cstring_view {
{ private:
private:
const Char *data_; const Char *data_;
public: public:
/** Constructs a string reference object from a C string. */ /** Constructs a string reference object from a C string. */
basic_cstring_view(const Char *s) basic_cstring_view(const Char *s) : data_(s) {}
: data_(s)
{
}
/** /**
\rst \rst
Constructs a string reference from an ``std::string`` object. Constructs a string reference from an ``std::string`` object.
\endrst \endrst
*/ */
basic_cstring_view(const std::basic_string<Char> &s) basic_cstring_view(const std::basic_string<Char> &s) : data_(s.c_str()) {}
: data_(s.c_str())
{
}
/** Returns the pointer to a C string. */ /** Returns the pointer to a C string. */
const Char *c_str() const const Char *c_str() const { return data_; }
{
return data_;
}
}; };
typedef basic_cstring_view<char> cstring_view; typedef basic_cstring_view<char> cstring_view;
typedef basic_cstring_view<wchar_t> wcstring_view; typedef basic_cstring_view<wchar_t> wcstring_view;
// An error code. // An error code.
class error_code class error_code {
{ private:
private:
int value_; int value_;
public: public:
explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {} explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {}
int get() const FMT_NOEXCEPT int get() const FMT_NOEXCEPT { return value_; }
{
return value_;
}
}; };
// A buffered file. // A buffered file.
class buffered_file class buffered_file {
{ private:
private:
FILE *file_; FILE *file_;
friend class file; friend class file;
explicit buffered_file(FILE *f) explicit buffered_file(FILE *f) : file_(f) {}
: file_(f)
{
}
public: public:
// Constructs a buffered_file object which doesn't represent any file. // Constructs a buffered_file object which doesn't represent any file.
buffered_file() FMT_NOEXCEPT : file_(FMT_NULL) {} buffered_file() FMT_NOEXCEPT : file_(FMT_NULL) {}
@ -162,11 +143,10 @@ public:
// Emulate a move constructor and a move assignment operator if rvalue // Emulate a move constructor and a move assignment operator if rvalue
// references are not supported. // references are not supported.
private: private:
// A proxy object to emulate a move constructor. // A proxy object to emulate a move constructor.
// It is private to make it impossible call operator Proxy directly. // It is private to make it impossible call operator Proxy directly.
struct Proxy struct Proxy {
{
FILE *file; FILE *file;
}; };
@ -175,22 +155,19 @@ public:
buffered_file(Proxy p) FMT_NOEXCEPT : file_(p.file) {} buffered_file(Proxy p) FMT_NOEXCEPT : file_(p.file) {}
// A "move constructor" for moving from an lvalue. // A "move constructor" for moving from an lvalue.
buffered_file(buffered_file &f) FMT_NOEXCEPT : file_(f.file_) buffered_file(buffered_file &f) FMT_NOEXCEPT : file_(f.file_) {
{
f.file_ = FMT_NULL; f.file_ = FMT_NULL;
} }
// A "move assignment operator" for moving from a temporary. // A "move assignment operator" for moving from a temporary.
buffered_file &operator=(Proxy p) buffered_file &operator=(Proxy p) {
{
close(); close();
file_ = p.file; file_ = p.file;
return *this; return *this;
} }
// A "move assignment operator" for moving from an lvalue. // A "move assignment operator" for moving from an lvalue.
buffered_file &operator=(buffered_file &other) buffered_file &operator=(buffered_file &other) {
{
close(); close();
file_ = other.file_; file_ = other.file_;
other.file_ = FMT_NULL; other.file_ = FMT_NULL;
@ -199,25 +176,22 @@ public:
// Returns a proxy object for moving from a temporary: // Returns a proxy object for moving from a temporary:
// buffered_file file = buffered_file(...); // buffered_file file = buffered_file(...);
operator Proxy() FMT_NOEXCEPT operator Proxy() FMT_NOEXCEPT {
{
Proxy p = {file_}; Proxy p = {file_};
file_ = FMT_NULL; file_ = FMT_NULL;
return p; return p;
} }
#else #else
private: private:
FMT_DISALLOW_COPY_AND_ASSIGN(buffered_file); FMT_DISALLOW_COPY_AND_ASSIGN(buffered_file);
public: public:
buffered_file(buffered_file &&other) FMT_NOEXCEPT : file_(other.file_) buffered_file(buffered_file &&other) FMT_NOEXCEPT : file_(other.file_) {
{
other.file_ = FMT_NULL; other.file_ = FMT_NULL;
} }
buffered_file &operator=(buffered_file &&other) buffered_file& operator=(buffered_file &&other) {
{
close(); close();
file_ = other.file_; file_ = other.file_;
other.file_ = FMT_NULL; other.file_ = FMT_NULL;
@ -232,23 +206,18 @@ public:
FMT_API void close(); FMT_API void close();
// Returns the pointer to a FILE object representing this file. // Returns the pointer to a FILE object representing this file.
FILE *get() const FMT_NOEXCEPT FILE *get() const FMT_NOEXCEPT { return file_; }
{
return file_;
}
// We place parentheses around fileno to workaround a bug in some versions // We place parentheses around fileno to workaround a bug in some versions
// of MinGW that define fileno as a macro. // of MinGW that define fileno as a macro.
FMT_API int(fileno)() const; FMT_API int (fileno)() const;
void vprint(string_view format_str, format_args args) void vprint(string_view format_str, format_args args) {
{
fmt::vprint(file_, format_str, args); fmt::vprint(file_, format_str, args);
} }
template<typename... Args> template <typename... Args>
inline void print(string_view format_str, const Args &... args) inline void print(string_view format_str, const Args & ... args) {
{
vprint(format_str, make_format_args(args...)); vprint(format_str, make_format_args(args...));
} }
}; };
@ -259,21 +228,16 @@ public:
// closing the file multiple times will cause a crash on Windows rather // closing the file multiple times will cause a crash on Windows rather
// than an exception. You can get standard behavior by overriding the // than an exception. You can get standard behavior by overriding the
// invalid parameter handler with _set_invalid_parameter_handler. // invalid parameter handler with _set_invalid_parameter_handler.
class file class file {
{ private:
private:
int fd_; // File descriptor. int fd_; // File descriptor.
// Constructs a file object with a given descriptor. // Constructs a file object with a given descriptor.
explicit file(int fd) explicit file(int fd) : fd_(fd) {}
: fd_(fd)
{
}
public: public:
// Possible values for the oflag argument to the constructor. // Possible values for the oflag argument to the constructor.
enum enum {
{
RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only. RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only.
WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only. WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only.
RDWR = FMT_POSIX(O_RDWR) // Open for reading and writing. RDWR = FMT_POSIX(O_RDWR) // Open for reading and writing.
@ -289,35 +253,31 @@ public:
// Emulate a move constructor and a move assignment operator if rvalue // Emulate a move constructor and a move assignment operator if rvalue
// references are not supported. // references are not supported.
private: private:
// A proxy object to emulate a move constructor. // A proxy object to emulate a move constructor.
// It is private to make it impossible call operator Proxy directly. // It is private to make it impossible call operator Proxy directly.
struct Proxy struct Proxy {
{
int fd; int fd;
}; };
public: public:
// A "move constructor" for moving from a temporary. // A "move constructor" for moving from a temporary.
file(Proxy p) FMT_NOEXCEPT : fd_(p.fd) {} file(Proxy p) FMT_NOEXCEPT : fd_(p.fd) {}
// A "move constructor" for moving from an lvalue. // A "move constructor" for moving from an lvalue.
file(file &other) FMT_NOEXCEPT : fd_(other.fd_) file(file &other) FMT_NOEXCEPT : fd_(other.fd_) {
{
other.fd_ = -1; other.fd_ = -1;
} }
// A "move assignment operator" for moving from a temporary. // A "move assignment operator" for moving from a temporary.
file &operator=(Proxy p) file &operator=(Proxy p) {
{
close(); close();
fd_ = p.fd; fd_ = p.fd;
return *this; return *this;
} }
// A "move assignment operator" for moving from an lvalue. // A "move assignment operator" for moving from an lvalue.
file &operator=(file &other) file &operator=(file &other) {
{
close(); close();
fd_ = other.fd_; fd_ = other.fd_;
other.fd_ = -1; other.fd_ = -1;
@ -326,25 +286,22 @@ public:
// Returns a proxy object for moving from a temporary: // Returns a proxy object for moving from a temporary:
// file f = file(...); // file f = file(...);
operator Proxy() FMT_NOEXCEPT operator Proxy() FMT_NOEXCEPT {
{
Proxy p = {fd_}; Proxy p = {fd_};
fd_ = -1; fd_ = -1;
return p; return p;
} }
#else #else
private: private:
FMT_DISALLOW_COPY_AND_ASSIGN(file); FMT_DISALLOW_COPY_AND_ASSIGN(file);
public: public:
file(file &&other) FMT_NOEXCEPT : fd_(other.fd_) file(file &&other) FMT_NOEXCEPT : fd_(other.fd_) {
{
other.fd_ = -1; other.fd_ = -1;
} }
file &operator=(file &&other) file& operator=(file &&other) {
{
close(); close();
fd_ = other.fd_; fd_ = other.fd_;
other.fd_ = -1; other.fd_ = -1;
@ -356,10 +313,7 @@ public:
FMT_API ~file() FMT_DTOR_NOEXCEPT; FMT_API ~file() FMT_DTOR_NOEXCEPT;
// Returns the file descriptor. // Returns the file descriptor.
int descriptor() const FMT_NOEXCEPT int descriptor() const FMT_NOEXCEPT { return fd_; }
{
return fd_;
}
// Closes the file. // Closes the file.
FMT_API void close(); FMT_API void close();
@ -398,66 +352,51 @@ public:
// Returns the memory page size. // Returns the memory page size.
long getpagesize(); long getpagesize();
#if (defined(LC_NUMERIC_MASK) || defined(_MSC_VER)) && !defined(__ANDROID__) && !defined(__CYGWIN__) && !defined(__OpenBSD__) #if (defined(LC_NUMERIC_MASK) || defined(_MSC_VER)) && \
#define FMT_LOCALE !defined(__ANDROID__) && !defined(__CYGWIN__) && !defined(__OpenBSD__)
# define FMT_LOCALE
#endif #endif
#ifdef FMT_LOCALE #ifdef FMT_LOCALE
// A "C" numeric locale. // A "C" numeric locale.
class Locale class Locale {
{ private:
private: # ifdef _MSC_VER
#ifdef _MSC_VER
typedef _locale_t locale_t; typedef _locale_t locale_t;
enum enum { LC_NUMERIC_MASK = LC_NUMERIC };
{
LC_NUMERIC_MASK = LC_NUMERIC
};
static locale_t newlocale(int category_mask, const char *locale, locale_t) static locale_t newlocale(int category_mask, const char *locale, locale_t) {
{
return _create_locale(category_mask, locale); return _create_locale(category_mask, locale);
} }
static void freelocale(locale_t locale) static void freelocale(locale_t locale) {
{
_free_locale(locale); _free_locale(locale);
} }
static double strtod_l(const char *nptr, char **endptr, _locale_t locale) static double strtod_l(const char *nptr, char **endptr, _locale_t locale) {
{
return _strtod_l(nptr, endptr, locale); return _strtod_l(nptr, endptr, locale);
} }
#endif # endif
locale_t locale_; locale_t locale_;
FMT_DISALLOW_COPY_AND_ASSIGN(Locale); FMT_DISALLOW_COPY_AND_ASSIGN(Locale);
public: public:
typedef locale_t Type; typedef locale_t Type;
Locale() Locale() : locale_(newlocale(LC_NUMERIC_MASK, "C", FMT_NULL)) {
: locale_(newlocale(LC_NUMERIC_MASK, "C", FMT_NULL))
{
if (!locale_) if (!locale_)
FMT_THROW(system_error(errno, "cannot create locale")); FMT_THROW(system_error(errno, "cannot create locale"));
} }
~Locale() ~Locale() { freelocale(locale_); }
{
freelocale(locale_);
}
Type get() const Type get() const { return locale_; }
{
return locale_;
}
// Converts string to floating-point number and advances str past the end // Converts string to floating-point number and advances str past the end
// of the parsed input. // of the parsed input.
double strtod(const char *&str) const double strtod(const char *&str) const {
{
char *end = FMT_NULL; char *end = FMT_NULL;
double result = strtod_l(str, &end, locale_); double result = strtod_l(str, &end, locale_);
str = end; str = end;
@ -470,15 +409,9 @@ FMT_END_NAMESPACE
#if !FMT_USE_RVALUE_REFERENCES #if !FMT_USE_RVALUE_REFERENCES
namespace std { namespace std {
// For compatibility with C++98. // For compatibility with C++98.
inline fmt::buffered_file &move(fmt::buffered_file &f) inline fmt::buffered_file &move(fmt::buffered_file &f) { return f; }
{ inline fmt::file &move(fmt::file &f) { return f; }
return f;
} }
inline fmt::file &move(fmt::file &f)
{
return f;
}
} // namespace std
#endif #endif
#endif // FMT_POSIX_H_ #endif // FMT_POSIX_H_

556
include/spdlog/fmt/bundled/printf.h
View File

@ -18,141 +18,111 @@ namespace internal {
// Checks if a value fits in int - used to avoid warnings about comparing // Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers. // signed and unsigned integers.
template<bool IsSigned> template <bool IsSigned>
struct int_checker struct int_checker {
{ template <typename T>
template<typename T> static bool fits_in_int(T value) {
static bool fits_in_int(T value)
{
unsigned max = std::numeric_limits<int>::max(); unsigned max = std::numeric_limits<int>::max();
return value <= max; return value <= max;
} }
static bool fits_in_int(bool) static bool fits_in_int(bool) { return true; }
{
return true;
}
}; };
template<> template <>
struct int_checker<true> struct int_checker<true> {
{ template <typename T>
template<typename T> static bool fits_in_int(T value) {
static bool fits_in_int(T value) return value >= std::numeric_limits<int>::min() &&
{ value <= std::numeric_limits<int>::max();
return value >= std::numeric_limits<int>::min() && value <= std::numeric_limits<int>::max();
}
static bool fits_in_int(int)
{
return true;
} }
static bool fits_in_int(int) { return true; }
}; };
class printf_precision_handler : public function<int> class printf_precision_handler: public function<int> {
{ public:
public: template <typename T>
template<typename T> typename std::enable_if<std::is_integral<T>::value, int>::type
typename std::enable_if<std::is_integral<T>::value, int>::type operator()(T value) operator()(T value) {
{
if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value)) if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
FMT_THROW(format_error("number is too big")); FMT_THROW(format_error("number is too big"));
return static_cast<int>(value); return static_cast<int>(value);
} }
template<typename T> template <typename T>
typename std::enable_if<!std::is_integral<T>::value, int>::type operator()(T) typename std::enable_if<!std::is_integral<T>::value, int>::type operator()(T) {
{
FMT_THROW(format_error("precision is not integer")); FMT_THROW(format_error("precision is not integer"));
return 0; return 0;
} }
}; };
// An argument visitor that returns true iff arg is a zero integer. // An argument visitor that returns true iff arg is a zero integer.
class is_zero_int : public function<bool> class is_zero_int: public function<bool> {
{ public:
public: template <typename T>
template<typename T> typename std::enable_if<std::is_integral<T>::value, bool>::type
typename std::enable_if<std::is_integral<T>::value, bool>::type operator()(T value) operator()(T value) { return value == 0; }
{
return value == 0;
}
template<typename T> template <typename T>
typename std::enable_if<!std::is_integral<T>::value, bool>::type operator()(T) typename std::enable_if<!std::is_integral<T>::value, bool>::type
{ operator()(T) { return false; }
return false;
}
}; };
template<typename T> template <typename T>
struct make_unsigned_or_bool : std::make_unsigned<T> struct make_unsigned_or_bool : std::make_unsigned<T> {};
{
};
template<> template <>
struct make_unsigned_or_bool<bool> struct make_unsigned_or_bool<bool> {
{
typedef bool type; typedef bool type;
}; };
template<typename T, typename Context> template <typename T, typename Context>
class arg_converter : public function<void> class arg_converter: public function<void> {
{ private:
private:
typedef typename Context::char_type Char; typedef typename Context::char_type Char;
basic_format_arg<Context> &arg_; basic_format_arg<Context> &arg_;
typename Context::char_type type_; typename Context::char_type type_;
public: public:
arg_converter(basic_format_arg<Context> &arg, Char type) arg_converter(basic_format_arg<Context> &arg, Char type)
: arg_(arg) : arg_(arg), type_(type) {}
, type_(type)
{
}
void operator()(bool value) void operator()(bool value) {
{
if (type_ != 's') if (type_ != 's')
operator()<bool>(value); operator()<bool>(value);
} }
template<typename U> template <typename U>
typename std::enable_if<std::is_integral<U>::value>::type operator()(U value) typename std::enable_if<std::is_integral<U>::value>::type
{ operator()(U value) {
bool is_signed = type_ == 'd' || type_ == 'i'; bool is_signed = type_ == 'd' || type_ == 'i';
typedef typename std::conditional<std::is_same<T, void>::value, U, T>::type TargetType; typedef typename std::conditional<
if (const_check(sizeof(TargetType) <= sizeof(int))) std::is_same<T, void>::value, U, T>::type TargetType;
{ if (const_check(sizeof(TargetType) <= sizeof(int))) {
// Extra casts are used to silence warnings. // Extra casts are used to silence warnings.
if (is_signed) if (is_signed) {
{ arg_ = internal::make_arg<Context>(
arg_ = internal::make_arg<Context>(static_cast<int>(static_cast<TargetType>(value))); static_cast<int>(static_cast<TargetType>(value)));
} } else {
else
{
typedef typename make_unsigned_or_bool<TargetType>::type Unsigned; typedef typename make_unsigned_or_bool<TargetType>::type Unsigned;
arg_ = internal::make_arg<Context>(static_cast<unsigned>(static_cast<Unsigned>(value))); arg_ = internal::make_arg<Context>(
static_cast<unsigned>(static_cast<Unsigned>(value)));
} }
} } else {
else if (is_signed) {
{
if (is_signed)
{
// glibc's printf doesn't sign extend arguments of smaller types: // glibc's printf doesn't sign extend arguments of smaller types:
// std::printf("%lld", -42); // prints "4294967254" // std::printf("%lld", -42); // prints "4294967254"
// but we don't have to do the same because it's a UB. // but we don't have to do the same because it's a UB.
arg_ = internal::make_arg<Context>(static_cast<long long>(value)); arg_ = internal::make_arg<Context>(static_cast<long long>(value));
} } else {
else arg_ = internal::make_arg<Context>(
{ static_cast<typename make_unsigned_or_bool<U>::type>(value));
arg_ = internal::make_arg<Context>(static_cast<typename make_unsigned_or_bool<U>::type>(value));
} }
} }
} }
template<typename U> template <typename U>
typename std::enable_if<!std::is_integral<U>::value>::type operator()(U) typename std::enable_if<!std::is_integral<U>::value>::type operator()(U) {
{
// No coversion needed for non-integral types. // No coversion needed for non-integral types.
} }
}; };
@ -161,66 +131,55 @@ public:
// If T is void, the argument is converted to corresponding signed or unsigned // If T is void, the argument is converted to corresponding signed or unsigned
// type depending on the type specifier: 'd' and 'i' - signed, other - // type depending on the type specifier: 'd' and 'i' - signed, other -
// unsigned). // unsigned).
template<typename T, typename Context, typename Char> template <typename T, typename Context, typename Char>
void convert_arg(basic_format_arg<Context> &arg, Char type) void convert_arg(basic_format_arg<Context> &arg, Char type) {
{
visit(arg_converter<T, Context>(arg, type), arg); visit(arg_converter<T, Context>(arg, type), arg);
} }
// Converts an integer argument to char for printf. // Converts an integer argument to char for printf.
template<typename Context> template <typename Context>
class char_converter : public function<void> class char_converter: public function<void> {
{ private:
private:
basic_format_arg<Context> &arg_; basic_format_arg<Context> &arg_;
FMT_DISALLOW_COPY_AND_ASSIGN(char_converter); FMT_DISALLOW_COPY_AND_ASSIGN(char_converter);
public: public:
explicit char_converter(basic_format_arg<Context> &arg) explicit char_converter(basic_format_arg<Context> &arg) : arg_(arg) {}
: arg_(arg)
{
}
template<typename T> template <typename T>
typename std::enable_if<std::is_integral<T>::value>::type operator()(T value) typename std::enable_if<std::is_integral<T>::value>::type
{ operator()(T value) {
typedef typename Context::char_type Char; typedef typename Context::char_type Char;
arg_ = internal::make_arg<Context>(static_cast<Char>(value)); arg_ = internal::make_arg<Context>(static_cast<Char>(value));
} }
template<typename T> template <typename T>
typename std::enable_if<!std::is_integral<T>::value>::type operator()(T) typename std::enable_if<!std::is_integral<T>::value>::type operator()(T) {
{
// No coversion needed for non-integral types. // No coversion needed for non-integral types.
} }
}; };
// Checks if an argument is a valid printf width specifier and sets // Checks if an argument is a valid printf width specifier and sets
// left alignment if it is negative. // left alignment if it is negative.
template<typename Char> template <typename Char>
class printf_width_handler : public function<unsigned> class printf_width_handler: public function<unsigned> {
{ private:
private:
typedef basic_format_specs<Char> format_specs; typedef basic_format_specs<Char> format_specs;
format_specs &spec_; format_specs &spec_;
FMT_DISALLOW_COPY_AND_ASSIGN(printf_width_handler); FMT_DISALLOW_COPY_AND_ASSIGN(printf_width_handler);
public: public:
explicit printf_width_handler(format_specs &spec) explicit printf_width_handler(format_specs &spec) : spec_(spec) {}
: spec_(spec)
{
}
template<typename T> template <typename T>
typename std::enable_if<std::is_integral<T>::value, unsigned>::type operator()(T value) typename std::enable_if<std::is_integral<T>::value, unsigned>::type
{ operator()(T value) {
typedef typename internal::int_traits<T>::main_type UnsignedType; typedef typename internal::int_traits<T>::main_type UnsignedType;
UnsignedType width = static_cast<UnsignedType>(value); UnsignedType width = static_cast<UnsignedType>(value);
if (internal::is_negative(value)) if (internal::is_negative(value)) {
{
spec_.align_ = ALIGN_LEFT; spec_.align_ = ALIGN_LEFT;
width = 0 - width; width = 0 - width;
} }
@ -230,19 +189,22 @@ public:
return static_cast<unsigned>(width); return static_cast<unsigned>(width);
} }
template<typename T> template <typename T>
typename std::enable_if<!std::is_integral<T>::value, unsigned>::type operator()(T) typename std::enable_if<!std::is_integral<T>::value, unsigned>::type
{ operator()(T) {
FMT_THROW(format_error("width is not integer")); FMT_THROW(format_error("width is not integer"));
return 0; return 0;
} }
}; };
} // namespace internal } // namespace internal
template<typename Range> template <typename Range>
class printf_arg_formatter; class printf_arg_formatter;
template<typename OutputIt, typename Char, typename ArgFormatter = printf_arg_formatter<back_insert_range<internal::basic_buffer<Char>>>> template <
typename OutputIt, typename Char,
typename ArgFormatter =
printf_arg_formatter<back_insert_range<internal::basic_buffer<Char>>>>
class basic_printf_context; class basic_printf_context;
/** /**
@ -250,11 +212,12 @@ class basic_printf_context;
The ``printf`` argument formatter. The ``printf`` argument formatter.
\endrst \endrst
*/ */
template<typename Range> template <typename Range>
class printf_arg_formatter : public internal::function<typename internal::arg_formatter_base<Range>::iterator>, class printf_arg_formatter:
public internal::arg_formatter_base<Range> public internal::function<
{ typename internal::arg_formatter_base<Range>::iterator>,
private: public internal::arg_formatter_base<Range> {
private:
typedef typename Range::value_type char_type; typedef typename Range::value_type char_type;
typedef decltype(internal::declval<Range>().begin()) iterator; typedef decltype(internal::declval<Range>().begin()) iterator;
typedef internal::arg_formatter_base<Range> base; typedef internal::arg_formatter_base<Range> base;
@ -262,19 +225,17 @@ private:
context_type &context_; context_type &context_;
void write_null_pointer(char) void write_null_pointer(char) {
{
this->spec().type_ = 0; this->spec().type_ = 0;
this->write("(nil)"); this->write("(nil)");
} }
void write_null_pointer(wchar_t) void write_null_pointer(wchar_t) {
{
this->spec().type_ = 0; this->spec().type_ = 0;
this->write(L"(nil)"); this->write(L"(nil)");
} }
public: public:
typedef typename base::format_specs format_specs; typedef typename base::format_specs format_specs;
/** /**
@ -284,39 +245,43 @@ public:
specifier information for standard argument types. specifier information for standard argument types.
\endrst \endrst
*/ */
printf_arg_formatter(internal::basic_buffer<char_type> &buffer, format_specs &spec, context_type &ctx) printf_arg_formatter(internal::basic_buffer<char_type> &buffer,
: base(back_insert_range<internal::basic_buffer<char_type>>(buffer), spec) format_specs &spec, context_type &ctx)
, context_(ctx) : base(back_insert_range<internal::basic_buffer<char_type>>(buffer), spec),
{ context_(ctx) {}
}
using base::operator(); template <typename T>
typename std::enable_if<std::is_integral<T>::value, iterator>::type
/** Formats an argument of type ``bool``. */ operator()(T value) {
iterator operator()(bool value) // MSVC2013 fails to compile separate overloads for bool and char_type so
{ // use std::is_same instead.
if (std::is_same<T, bool>::value) {
format_specs &fmt_spec = this->spec(); format_specs &fmt_spec = this->spec();
if (fmt_spec.type_ != 's') if (fmt_spec.type_ != 's')
return (*this)(value ? 1 : 0); return base::operator()(value ? 1 : 0);
fmt_spec.type_ = 0; fmt_spec.type_ = 0;
this->write(value); this->write(value != 0);
return this->out(); } else if (std::is_same<T, char_type>::value) {
}
/** Formats a character. */
iterator operator()(char_type value)
{
format_specs &fmt_spec = this->spec(); format_specs &fmt_spec = this->spec();
if (fmt_spec.type_ && fmt_spec.type_ != 'c') if (fmt_spec.type_ && fmt_spec.type_ != 'c')
return (*this)(static_cast<int>(value)); return (*this)(static_cast<int>(value));
fmt_spec.flags_ = 0; fmt_spec.flags_ = 0;
fmt_spec.align_ = ALIGN_RIGHT; fmt_spec.align_ = ALIGN_RIGHT;
return base::operator()(value); return base::operator()(value);
} else {
return base::operator()(value);
}
return this->out();
}
template <typename T>
typename std::enable_if<std::is_floating_point<T>::value, iterator>::type
operator()(T value) {
return base::operator()(value);
} }
/** Formats a null-terminated C string. */ /** Formats a null-terminated C string. */
iterator operator()(const char *value) iterator operator()(const char *value) {
{
if (value) if (value)
base::operator()(value); base::operator()(value);
else if (this->spec().type_ == 'p') else if (this->spec().type_ == 'p')
@ -327,8 +292,7 @@ public:
} }
/** Formats a null-terminated wide C string. */ /** Formats a null-terminated wide C string. */
iterator operator()(const wchar_t *value) iterator operator()(const wchar_t *value) {
{
if (value) if (value)
base::operator()(value); base::operator()(value);
else if (this->spec().type_ == 'p') else if (this->spec().type_ == 'p')
@ -338,9 +302,16 @@ public:
return this->out(); return this->out();
} }
iterator operator()(basic_string_view<char_type> value) {
return base::operator()(value);
}
iterator operator()(monostate value) {
return base::operator()(value);
}
/** Formats a pointer. */ /** Formats a pointer. */
iterator operator()(const void *value) iterator operator()(const void *value) {
{
if (value) if (value)
return base::operator()(value); return base::operator()(value);
this->spec().type_ = 0; this->spec().type_ = 0;
@ -349,45 +320,37 @@ public:
} }
/** Formats an argument of a custom (user-defined) type. */ /** Formats an argument of a custom (user-defined) type. */
iterator operator()(typename basic_format_arg<context_type>::handle handle) iterator operator()(typename basic_format_arg<context_type>::handle handle) {
{
handle.format(context_); handle.format(context_);
return this->out(); return this->out();
} }
}; };
template<typename T> template <typename T>
struct printf_formatter struct printf_formatter {
{ template <typename ParseContext>
template<typename ParseContext> auto parse(ParseContext &ctx) -> decltype(ctx.begin()) { return ctx.begin(); }
auto parse(ParseContext &ctx) -> decltype(ctx.begin())
{
return ctx.begin();
}
template<typename FormatContext> template <typename FormatContext>
auto format(const T &value, FormatContext &ctx) -> decltype(ctx.out()) auto format(const T &value, FormatContext &ctx) -> decltype(ctx.out()) {
{
internal::format_value(internal::get_container(ctx.out()), value); internal::format_value(internal::get_container(ctx.out()), value);
return ctx.out(); return ctx.out();
} }
}; };
/** This template formats data and writes the output to a writer. */ /** This template formats data and writes the output to a writer. */
template<typename OutputIt, typename Char, typename ArgFormatter> template <typename OutputIt, typename Char, typename ArgFormatter>
class basic_printf_context : private internal::context_base<OutputIt, basic_printf_context<OutputIt, Char, ArgFormatter>, Char> class basic_printf_context :
{ private internal::context_base<
public: OutputIt, basic_printf_context<OutputIt, Char, ArgFormatter>, Char> {
public:
/** The character type for the output. */ /** The character type for the output. */
typedef Char char_type; typedef Char char_type;
template<typename T> template <typename T>
struct formatter_type struct formatter_type { typedef printf_formatter<T> type; };
{
typedef printf_formatter<T> type;
};
private: private:
typedef internal::context_base<OutputIt, basic_printf_context, Char> base; typedef internal::context_base<OutputIt, basic_printf_context, Char> base;
typedef typename base::format_arg format_arg; typedef typename base::format_arg format_arg;
typedef basic_format_specs<char_type> format_specs; typedef basic_format_specs<char_type> format_specs;
@ -397,12 +360,14 @@ private:
// Returns the argument with specified index or, if arg_index is equal // Returns the argument with specified index or, if arg_index is equal
// to the maximum unsigned value, the next argument. // to the maximum unsigned value, the next argument.
format_arg get_arg(iterator it, unsigned arg_index = (std::numeric_limits<unsigned>::max)()); format_arg get_arg(
iterator it,
unsigned arg_index = (std::numeric_limits<unsigned>::max)());
// Parses argument index, flags and width and returns the argument index. // Parses argument index, flags and width and returns the argument index.
unsigned parse_header(iterator &it, format_specs &spec); unsigned parse_header(iterator &it, format_specs &spec);
public: public:
/** /**
\rst \rst
Constructs a ``printf_context`` object. References to the arguments and Constructs a ``printf_context`` object. References to the arguments and
@ -410,26 +375,23 @@ public:
appropriate lifetimes. appropriate lifetimes.
\endrst \endrst
*/ */
basic_printf_context(OutputIt out, basic_string_view<char_type> format_str, basic_format_args<basic_printf_context> args) basic_printf_context(OutputIt out, basic_string_view<char_type> format_str,
: base(out, format_str, args) basic_format_args<basic_printf_context> args)
{ : base(out, format_str, args) {}
}
using base::advance_to;
using base::out;
using base::parse_context; using base::parse_context;
using base::out;
using base::advance_to;
/** Formats stored arguments and writes the output to the range. */ /** Formats stored arguments and writes the output to the range. */
void format(); void format();
}; };
template<typename OutputIt, typename Char, typename AF> template <typename OutputIt, typename Char, typename AF>
void basic_printf_context<OutputIt, Char, AF>::parse_flags(format_specs &spec, iterator &it) void basic_printf_context<OutputIt, Char, AF>::parse_flags(
{ format_specs &spec, iterator &it) {
for (;;) for (;;) {
{ switch (*it++) {
switch (*it++)
{
case '-': case '-':
spec.align_ = ALIGN_LEFT; spec.align_ = ALIGN_LEFT;
break; break;
@ -452,38 +414,33 @@ void basic_printf_context<OutputIt, Char, AF>::parse_flags(format_specs &spec, i
} }
} }
template<typename OutputIt, typename Char, typename AF> template <typename OutputIt, typename Char, typename AF>
typename basic_printf_context<OutputIt, Char, AF>::format_arg basic_printf_context<OutputIt, Char, AF>::get_arg( typename basic_printf_context<OutputIt, Char, AF>::format_arg
iterator it, unsigned arg_index) basic_printf_context<OutputIt, Char, AF>::get_arg(
{ iterator it, unsigned arg_index) {
(void)it; (void)it;
if (arg_index == std::numeric_limits<unsigned>::max()) if (arg_index == std::numeric_limits<unsigned>::max())
return this->do_get_arg(this->parse_context().next_arg_id()); return this->do_get_arg(this->parse_context().next_arg_id());
return base::get_arg(arg_index - 1); return base::get_arg(arg_index - 1);
} }
template<typename OutputIt, typename Char, typename AF> template <typename OutputIt, typename Char, typename AF>
unsigned basic_printf_context<OutputIt, Char, AF>::parse_header(iterator &it, format_specs &spec) unsigned basic_printf_context<OutputIt, Char, AF>::parse_header(
{ iterator &it, format_specs &spec) {
unsigned arg_index = std::numeric_limits<unsigned>::max(); unsigned arg_index = std::numeric_limits<unsigned>::max();
char_type c = *it; char_type c = *it;
if (c >= '0' && c <= '9') if (c >= '0' && c <= '9') {
{
// Parse an argument index (if followed by '$') or a width possibly // Parse an argument index (if followed by '$') or a width possibly
// preceded with '0' flag(s). // preceded with '0' flag(s).
internal::error_handler eh; internal::error_handler eh;
unsigned value = parse_nonnegative_int(it, eh); unsigned value = parse_nonnegative_int(it, eh);
if (*it == '$') if (*it == '$') { // value is an argument index
{ // value is an argument index
++it; ++it;
arg_index = value; arg_index = value;
} } else {
else
{
if (c == '0') if (c == '0')
spec.fill_ = '0'; spec.fill_ = '0';
if (value != 0) if (value != 0) {
{
// Nonzero value means that we parsed width and don't need to // Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now. // parse it or flags again, so return now.
spec.width_ = value; spec.width_ = value;
@ -493,33 +450,27 @@ unsigned basic_printf_context<OutputIt, Char, AF>::parse_header(iterator &it, fo
} }
parse_flags(spec, it); parse_flags(spec, it);
// Parse width. // Parse width.
if (*it >= '0' && *it <= '9') if (*it >= '0' && *it <= '9') {
{
internal::error_handler eh; internal::error_handler eh;
spec.width_ = parse_nonnegative_int(it, eh); spec.width_ = parse_nonnegative_int(it, eh);
} } else if (*it == '*') {
else if (*it == '*')
{
++it; ++it;
spec.width_ = visit(internal::printf_width_handler<char_type>(spec), get_arg(it)); spec.width_ =
visit(internal::printf_width_handler<char_type>(spec), get_arg(it));
} }
return arg_index; return arg_index;
} }
template<typename OutputIt, typename Char, typename AF> template <typename OutputIt, typename Char, typename AF>
void basic_printf_context<OutputIt, Char, AF>::format() void basic_printf_context<OutputIt, Char, AF>::format() {
{
auto &buffer = internal::get_container(this->out()); auto &buffer = internal::get_container(this->out());
auto start = iterator(this->parse_context()); auto start = iterator(this->parse_context());
auto it = start; auto it = start;
using internal::pointer_from; using internal::pointer_from;
while (*it) while (*it) {
{
char_type c = *it++; char_type c = *it++;
if (c != '%') if (c != '%') continue;
continue; if (*it == c) {
if (*it == c)
{
buffer.append(pointer_from(start), pointer_from(it)); buffer.append(pointer_from(start), pointer_from(it));
start = ++it; start = ++it;
continue; continue;
@ -533,21 +484,16 @@ void basic_printf_context<OutputIt, Char, AF>::format()
unsigned arg_index = parse_header(it, spec); unsigned arg_index = parse_header(it, spec);
// Parse precision. // Parse precision.
if (*it == '.') if (*it == '.') {
{
++it; ++it;
if ('0' <= *it && *it <= '9') if ('0' <= *it && *it <= '9') {
{
internal::error_handler eh; internal::error_handler eh;
spec.precision_ = static_cast<int>(parse_nonnegative_int(it, eh)); spec.precision_ = static_cast<int>(parse_nonnegative_int(it, eh));
} } else if (*it == '*') {
else if (*it == '*')
{
++it; ++it;
spec.precision_ = visit(internal::printf_precision_handler(), get_arg(it)); spec.precision_ =
} visit(internal::printf_precision_handler(), get_arg(it));
else } else {
{
spec.precision_ = 0; spec.precision_ = 0;
} }
} }
@ -555,8 +501,7 @@ void basic_printf_context<OutputIt, Char, AF>::format()
format_arg arg = get_arg(it, arg_index); format_arg arg = get_arg(it, arg_index);
if (spec.flag(HASH_FLAG) && visit(internal::is_zero_int(), arg)) if (spec.flag(HASH_FLAG) && visit(internal::is_zero_int(), arg))
spec.flags_ &= ~internal::to_unsigned<int>(HASH_FLAG); spec.flags_ &= ~internal::to_unsigned<int>(HASH_FLAG);
if (spec.fill_ == '0') if (spec.fill_ == '0') {
{
if (arg.is_arithmetic()) if (arg.is_arithmetic())
spec.align_ = ALIGN_NUMERIC; spec.align_ = ALIGN_NUMERIC;
else else
@ -565,8 +510,7 @@ void basic_printf_context<OutputIt, Char, AF>::format()
// Parse length and convert the argument to the required type. // Parse length and convert the argument to the required type.
using internal::convert_arg; using internal::convert_arg;
switch (*it++) switch (*it++) {
{
case 'h': case 'h':
if (*it == 'h') if (*it == 'h')
convert_arg<signed char>(arg, *++it); convert_arg<signed char>(arg, *++it);
@ -601,13 +545,10 @@ void basic_printf_context<OutputIt, Char, AF>::format()
if (!*it) if (!*it)
FMT_THROW(format_error("invalid format string")); FMT_THROW(format_error("invalid format string"));
spec.type_ = static_cast<char>(*it++); spec.type_ = static_cast<char>(*it++);
if (arg.is_integral()) if (arg.is_integral()) {
{
// Normalize type. // Normalize type.
switch (spec.type_) switch (spec.type_) {
{ case 'i': case 'u':
case 'i':
case 'u':
spec.type_ = 'd'; spec.type_ = 'd';
break; break;
case 'c': case 'c':
@ -625,28 +566,28 @@ void basic_printf_context<OutputIt, Char, AF>::format()
buffer.append(pointer_from(start), pointer_from(it)); buffer.append(pointer_from(start), pointer_from(it));
} }
template<typename Char, typename Context> template <typename Char, typename Context>
void printf(internal::basic_buffer<Char> &buf, basic_string_view<Char> format, basic_format_args<Context> args) void printf(internal::basic_buffer<Char> &buf, basic_string_view<Char> format,
{ basic_format_args<Context> args) {
Context(std::back_inserter(buf), format, args).format(); Context(std::back_inserter(buf), format, args).format();
} }
template<typename Buffer> template <typename Buffer>
struct printf_context struct printf_context {
{ typedef basic_printf_context<
typedef basic_printf_context<std::back_insert_iterator<Buffer>, typename Buffer::value_type> type; std::back_insert_iterator<Buffer>, typename Buffer::value_type> type;
}; };
template<typename... Args> template <typename ...Args>
inline format_arg_store<printf_context<internal::buffer>::type, Args...> make_printf_args(const Args &... args) inline format_arg_store<printf_context<internal::buffer>::type, Args...>
{ make_printf_args(const Args & ... args) {
return format_arg_store<printf_context<internal::buffer>::type, Args...>(args...); return format_arg_store<printf_context<internal::buffer>::type, Args...>(
args...);
} }
typedef basic_format_args<printf_context<internal::buffer>::type> printf_args; typedef basic_format_args<printf_context<internal::buffer>::type> printf_args;
typedef basic_format_args<printf_context<internal::wbuffer>::type> wprintf_args; typedef basic_format_args<printf_context<internal::wbuffer>::type> wprintf_args;
inline std::string vsprintf(string_view format, printf_args args) inline std::string vsprintf(string_view format, printf_args args) {
{
memory_buffer buffer; memory_buffer buffer;
printf(buffer, format, args); printf(buffer, format, args);
return to_string(buffer); return to_string(buffer);
@ -661,33 +602,33 @@ inline std::string vsprintf(string_view format, printf_args args)
std::string message = fmt::sprintf("The answer is %d", 42); std::string message = fmt::sprintf("The answer is %d", 42);
\endrst \endrst
*/ */
template<typename... Args> template <typename... Args>
inline std::string sprintf(string_view format_str, const Args &... args) inline std::string sprintf(string_view format_str, const Args & ... args) {
{ return vsprintf(format_str,
return vsprintf(format_str, make_format_args<typename printf_context<internal::buffer>::type>(args...)); make_format_args<typename printf_context<internal::buffer>::type>(args...));
} }
inline std::wstring vsprintf(wstring_view format, wprintf_args args) inline std::wstring vsprintf(wstring_view format, wprintf_args args) {
{
wmemory_buffer buffer; wmemory_buffer buffer;
printf(buffer, format, args); printf(buffer, format, args);
return to_string(buffer); return to_string(buffer);
} }
template<typename... Args> template <typename... Args>
inline std::wstring sprintf(wstring_view format_str, const Args &... args) inline std::wstring sprintf(wstring_view format_str, const Args & ... args) {
{ return vsprintf(format_str,
return vsprintf(format_str, make_format_args<typename printf_context<internal::wbuffer>::type>(args...)); make_format_args<typename printf_context<internal::wbuffer>::type>(args...));
} }
template<typename Char> template <typename Char>
inline int vfprintf( inline int vfprintf(std::FILE *f, basic_string_view<Char> format,
std::FILE *f, basic_string_view<Char> format, basic_format_args<typename printf_context<internal::basic_buffer<Char>>::type> args) basic_format_args<typename printf_context<
{ internal::basic_buffer<Char>>::type> args) {
basic_memory_buffer<Char> buffer; basic_memory_buffer<Char> buffer;
printf(buffer, format, args); printf(buffer, format, args);
std::size_t size = buffer.size(); std::size_t size = buffer.size();
return std::fwrite(buffer.data(), sizeof(Char), size, f) < size ? -1 : static_cast<int>(size); return std::fwrite(
buffer.data(), sizeof(Char), size, f) < size ? -1 : static_cast<int>(size);
} }
/** /**
@ -699,26 +640,25 @@ inline int vfprintf(
fmt::fprintf(stderr, "Don't %s!", "panic"); fmt::fprintf(stderr, "Don't %s!", "panic");
\endrst \endrst
*/ */
template<typename... Args> template <typename... Args>
inline int fprintf(std::FILE *f, string_view format_str, const Args &... args) inline int fprintf(std::FILE *f, string_view format_str, const Args & ... args) {
{ auto vargs = make_format_args<
auto vargs = make_format_args<typename printf_context<internal::buffer>::type>(args...); typename printf_context<internal::buffer>::type>(args...);
return vfprintf<char>(f, format_str, vargs); return vfprintf<char>(f, format_str, vargs);
} }
template<typename... Args> template <typename... Args>
inline int fprintf(std::FILE *f, wstring_view format_str, const Args &... args) inline int fprintf(std::FILE *f, wstring_view format_str,
{ const Args & ... args) {
return vfprintf(f, format_str, make_format_args<typename printf_context<internal::wbuffer>::type>(args...)); return vfprintf(f, format_str,
make_format_args<typename printf_context<internal::wbuffer>::type>(args...));
} }
inline int vprintf(string_view format, printf_args args) inline int vprintf(string_view format, printf_args args) {
{
return vfprintf(stdout, format, args); return vfprintf(stdout, format, args);
} }
inline int vprintf(wstring_view format, wprintf_args args) inline int vprintf(wstring_view format, wprintf_args args) {
{
return vfprintf(stdout, format, args); return vfprintf(stdout, format, args);
} }
@ -731,28 +671,28 @@ inline int vprintf(wstring_view format, wprintf_args args)
fmt::printf("Elapsed time: %.2f seconds", 1.23); fmt::printf("Elapsed time: %.2f seconds", 1.23);
\endrst \endrst
*/ */
template<typename... Args> template <typename... Args>
inline int printf(string_view format_str, const Args &... args) inline int printf(string_view format_str, const Args & ... args) {
{ return vprintf(format_str,
return vprintf(format_str, make_format_args<typename printf_context<internal::buffer>::type>(args...)); make_format_args<typename printf_context<internal::buffer>::type>(args...));
} }
template<typename... Args> template <typename... Args>
inline int printf(wstring_view format_str, const Args &... args) inline int printf(wstring_view format_str, const Args & ... args) {
{ return vprintf(format_str,
return vprintf(format_str, make_format_args<typename printf_context<internal::wbuffer>::type>(args...)); make_format_args<typename printf_context<internal::wbuffer>::type>(args...));
} }
inline int vfprintf(std::ostream &os, string_view format_str, printf_args args) inline int vfprintf(std::ostream &os, string_view format_str,
{ printf_args args) {
memory_buffer buffer; memory_buffer buffer;
printf(buffer, format_str, args); printf(buffer, format_str, args);
internal::write(os, buffer); internal::write(os, buffer);
return static_cast<int>(buffer.size()); return static_cast<int>(buffer.size());
} }
inline int vfprintf(std::wostream &os, wstring_view format_str, wprintf_args args) inline int vfprintf(std::wostream &os, wstring_view format_str,
{ wprintf_args args) {
wmemory_buffer buffer; wmemory_buffer buffer;
printf(buffer, format_str, args); printf(buffer, format_str, args);
internal::write(os, buffer); internal::write(os, buffer);
@ -768,17 +708,19 @@ inline int vfprintf(std::wostream &os, wstring_view format_str, wprintf_args arg
fmt::fprintf(cerr, "Don't %s!", "panic"); fmt::fprintf(cerr, "Don't %s!", "panic");
\endrst \endrst
*/ */
template<typename... Args> template <typename... Args>
inline int fprintf(std::ostream &os, string_view format_str, const Args &... args) inline int fprintf(std::ostream &os, string_view format_str,
{ const Args & ... args) {
auto vargs = make_format_args<typename printf_context<internal::buffer>::type>(args...); auto vargs = make_format_args<
typename printf_context<internal::buffer>::type>(args...);
return vfprintf(os, format_str, vargs); return vfprintf(os, format_str, vargs);
} }
template<typename... Args> template <typename... Args>
inline int fprintf(std::wostream &os, wstring_view format_str, const Args &... args) inline int fprintf(std::wostream &os, wstring_view format_str,
{ const Args & ... args) {
auto vargs = make_format_args<typename printf_context<internal::buffer>::type>(args...); auto vargs = make_format_args<
typename printf_context<internal::buffer>::type>(args...);
return vfprintf(os, format_str, vargs); return vfprintf(os, format_str, vargs);
} }
FMT_END_NAMESPACE FMT_END_NAMESPACE

285
include/spdlog/fmt/bundled/ranges.h
View File

@ -17,268 +17,233 @@
// output only up to N items from the range. // output only up to N items from the range.
#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT #ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT
#define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256 # define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256
#endif #endif
FMT_BEGIN_NAMESPACE FMT_BEGIN_NAMESPACE
template<typename Char> template <typename Char>
struct formatting_base struct formatting_base {
{ template <typename ParseContext>
template<typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin())
{
return ctx.begin(); return ctx.begin();
} }
}; };
template<typename Char, typename Enable = void> template <typename Char, typename Enable = void>
struct formatting_range : formatting_base<Char> struct formatting_range : formatting_base<Char> {
{
static FMT_CONSTEXPR_DECL const std::size_t range_length_limit = static FMT_CONSTEXPR_DECL const std::size_t range_length_limit =
FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the range. FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the range.
Char prefix; Char prefix;
Char delimiter; Char delimiter;
Char postfix; Char postfix;
formatting_range() formatting_range() : prefix('{'), delimiter(','), postfix('}') {}
: prefix('{')
, delimiter(',')
, postfix('}')
{
}
static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true; static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false; static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
}; };
template<typename Char, typename Enable = void> template <typename Char, typename Enable = void>
struct formatting_tuple : formatting_base<Char> struct formatting_tuple : formatting_base<Char> {
{
Char prefix; Char prefix;
Char delimiter; Char delimiter;
Char postfix; Char postfix;
formatting_tuple() formatting_tuple() : prefix('('), delimiter(','), postfix(')') {}
: prefix('(')
, delimiter(',')
, postfix(')')
{
}
static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true; static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false; static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
}; };
namespace internal { namespace internal {
template<typename RangeT, typename OutputIterator> template <typename RangeT, typename OutputIterator>
void copy(const RangeT &range, OutputIterator out) void copy(const RangeT &range, OutputIterator out) {
{
for (auto it = range.begin(), end = range.end(); it != end; ++it) for (auto it = range.begin(), end = range.end(); it != end; ++it)
*out++ = *it; *out++ = *it;
} }
template<typename OutputIterator> template <typename OutputIterator>
void copy(const char *str, OutputIterator out) void copy(const char *str, OutputIterator out) {
{
const char *p_curr = str; const char *p_curr = str;
while (*p_curr) while (*p_curr) {
{
*out++ = *p_curr++; *out++ = *p_curr++;
} }
} }
template<typename OutputIterator> template <typename OutputIterator>
void copy(char ch, OutputIterator out) void copy(char ch, OutputIterator out) {
{
*out++ = ch; *out++ = ch;
} }
/// Return true value if T has std::string interface, like std::string_view. /// Return true value if T has std::string interface, like std::string_view.
template<typename T> template <typename T>
class is_like_std_string class is_like_std_string {
{ template <typename U>
template<typename U> static auto check(U *p) ->
static auto check(U *p) -> decltype(p->find('a'), p->length(), p->data(), int()); decltype(p->find('a'), p->length(), p->data(), int());
template<typename> template <typename>
static void check(...); static void check(...);
public: public:
static FMT_CONSTEXPR_DECL const bool value = !std::is_void<decltype(check<T>(FMT_NULL))>::value; static FMT_CONSTEXPR_DECL const bool value =
!std::is_void<decltype(check<T>(FMT_NULL))>::value;
}; };
template<typename... Ts> template <typename... Ts>
struct conditional_helper struct conditional_helper {};
{
};
template<typename T, typename _ = void> template <typename T, typename _ = void>
struct is_range_ : std::false_type struct is_range_ : std::false_type {};
{
};
template<typename T> #if !FMT_MSC_VER || FMT_MSC_VER > 1800
struct is_range_<T, typename std::conditional<false, template <typename T>
conditional_helper<decltype(internal::declval<T>().begin()), decltype(internal::declval<T>().end())>, void>::type> struct is_range_<T, typename std::conditional<
: std::true_type false,
{ conditional_helper<decltype(internal::declval<T>().begin()),
}; decltype(internal::declval<T>().end())>,
void>::type> : std::true_type {};
#endif
/// tuple_size and tuple_element check. /// tuple_size and tuple_element check.
template<typename T> template <typename T>
class is_tuple_like_ class is_tuple_like_ {
{ template <typename U>
template<typename U> static auto check(U *p) ->
static auto check(U *p) -> decltype(std::tuple_size<U>::value, internal::declval<typename std::tuple_element<0, U>::type>(), int()); decltype(std::tuple_size<U>::value,
template<typename> internal::declval<typename std::tuple_element<0, U>::type>(), int());
template <typename>
static void check(...); static void check(...);
public: public:
static FMT_CONSTEXPR_DECL const bool value = !std::is_void<decltype(check<T>(FMT_NULL))>::value; static FMT_CONSTEXPR_DECL const bool value =
!std::is_void<decltype(check<T>(FMT_NULL))>::value;
}; };
// Check for integer_sequence // Check for integer_sequence
#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900 #if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900
template<typename T, T... N> template <typename T, T... N>
using integer_sequence = std::integer_sequence<T, N...>; using integer_sequence = std::integer_sequence<T, N...>;
template<std::size_t... N> template <std::size_t... N>
using index_sequence = std::index_sequence<N...>; using index_sequence = std::index_sequence<N...>;
template<std::size_t N> template <std::size_t N>
using make_index_sequence = std::make_index_sequence<N>; using make_index_sequence = std::make_index_sequence<N>;
#else #else
template<typename T, T... N> template <typename T, T... N>
struct integer_sequence struct integer_sequence {
{
typedef T value_type; typedef T value_type;
static FMT_CONSTEXPR std::size_t size() static FMT_CONSTEXPR std::size_t size() {
{
return sizeof...(N); return sizeof...(N);
} }
}; };
template<std::size_t... N> template <std::size_t... N>
using index_sequence = integer_sequence<std::size_t, N...>; using index_sequence = integer_sequence<std::size_t, N...>;
template<typename T, std::size_t N, T... Ns> template <typename T, std::size_t N, T... Ns>
struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {};
{ template <typename T, T... Ns>
}; struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {};
template<typename T, T... Ns>
struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...>
{
};
template<std::size_t N> template <std::size_t N>
using make_index_sequence = make_integer_sequence<std::size_t, N>; using make_index_sequence = make_integer_sequence<std::size_t, N>;
#endif #endif
template<class Tuple, class F, size_t... Is> template <class Tuple, class F, size_t... Is>
void for_each(index_sequence<Is...>, Tuple &&tup, F &&f) noexcept void for_each(index_sequence<Is...>, Tuple &&tup, F &&f) FMT_NOEXCEPT {
{
using std::get; using std::get;
// using free function get<I>(T) now. // using free function get<I>(T) now.
const int _[] = {0, ((void)f(get<Is>(tup)), 0)...}; const int _[] = {0, ((void)f(get<Is>(tup)), 0)...};
(void)_; // blocks warnings (void)_; // blocks warnings
} }
template<class T> template <class T>
FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes(T const &) FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value>
{ get_indexes(T const &) { return {}; }
return {};
}
template<class Tuple, class F> template <class Tuple, class F>
void for_each(Tuple &&tup, F &&f) void for_each(Tuple &&tup, F &&f) {
{
const auto indexes = get_indexes(tup); const auto indexes = get_indexes(tup);
for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f)); for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f));
} }
template<typename Arg> template<typename Arg>
FMT_CONSTEXPR const char *format_str_quoted( FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&,
bool add_space, const Arg &, typename std::enable_if<!is_like_std_string<typename std::decay<Arg>::type>::value>::type * = nullptr) typename std::enable_if<
{ !is_like_std_string<typename std::decay<Arg>::type>::value>::type* = nullptr) {
return add_space ? " {}" : "{}"; return add_space ? " {}" : "{}";
} }
template<typename Arg> template<typename Arg>
FMT_CONSTEXPR const char *format_str_quoted( FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&,
bool add_space, const Arg &, typename std::enable_if<is_like_std_string<typename std::decay<Arg>::type>::value>::type * = nullptr) typename std::enable_if<
{ is_like_std_string<typename std::decay<Arg>::type>::value>::type* = nullptr) {
return add_space ? " \"{}\"" : "\"{}\""; return add_space ? " \"{}\"" : "\"{}\"";
} }
FMT_CONSTEXPR const char *format_str_quoted(bool add_space, const char *) FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char*) {
{
return add_space ? " \"{}\"" : "\"{}\""; return add_space ? " \"{}\"" : "\"{}\"";
} }
FMT_CONSTEXPR const wchar_t *format_str_quoted(bool add_space, const wchar_t *) FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t*) {
{
return add_space ? L" \"{}\"" : L"\"{}\""; return add_space ? L" \"{}\"" : L"\"{}\"";
} }
FMT_CONSTEXPR const char *format_str_quoted(bool add_space, const char) FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char) {
{
return add_space ? " '{}'" : "'{}'"; return add_space ? " '{}'" : "'{}'";
} }
FMT_CONSTEXPR const wchar_t *format_str_quoted(bool add_space, const wchar_t) FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t) {
{
return add_space ? L" '{}'" : L"'{}'"; return add_space ? L" '{}'" : L"'{}'";
} }
} // namespace internal } // namespace internal
template<typename T> template <typename T>
struct is_tuple_like struct is_tuple_like {
{ static FMT_CONSTEXPR_DECL const bool value =
static FMT_CONSTEXPR_DECL const bool value = internal::is_tuple_like_<T>::value && !internal::is_range_<T>::value; internal::is_tuple_like_<T>::value && !internal::is_range_<T>::value;
}; };
template<typename TupleT, typename Char> template <typename TupleT, typename Char>
struct formatter<TupleT, Char, typename std::enable_if<fmt::is_tuple_like<TupleT>::value>::type> struct formatter<TupleT, Char,
{ typename std::enable_if<fmt::is_tuple_like<TupleT>::value>::type> {
private: private:
// C++11 generic lambda for format() // C++11 generic lambda for format()
template<typename FormatContext> template <typename FormatContext>
struct format_each struct format_each {
{ template <typename T>
template<typename T> void operator()(const T& v) {
void operator()(const T &v) if (i > 0) {
{ if (formatting.add_prepostfix_space) {
if (i > 0)
{
if (formatting.add_prepostfix_space)
{
*out++ = ' '; *out++ = ' ';
} }
internal::copy(formatting.delimiter, out); internal::copy(formatting.delimiter, out);
} }
format_to(out, internal::format_str_quoted((formatting.add_delimiter_spaces && i > 0), v), v); format_to(out,
internal::format_str_quoted(
(formatting.add_delimiter_spaces && i > 0), v),
v);
++i; ++i;
} }
formatting_tuple<Char> &formatting; formatting_tuple<Char>& formatting;
std::size_t &i; std::size_t& i;
typename std::add_lvalue_reference<decltype(std::declval<FormatContext>().out())>::type out; typename std::add_lvalue_reference<decltype(std::declval<FormatContext>().out())>::type out;
}; };
public: public:
formatting_tuple<Char> formatting; formatting_tuple<Char> formatting;
template<typename ParseContext> template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
{
return formatting.parse(ctx); return formatting.parse(ctx);
} }
template<typename FormatContext = format_context> template <typename FormatContext = format_context>
auto format(const TupleT &values, FormatContext &ctx) -> decltype(ctx.out()) auto format(const TupleT &values, FormatContext &ctx) -> decltype(ctx.out()) {
{
auto out = ctx.out(); auto out = ctx.out();
std::size_t i = 0; std::size_t i = 0;
internal::copy(formatting.prefix, out); internal::copy(formatting.prefix, out);
internal::for_each(values, format_each<FormatContext>{formatting, i, out}); internal::for_each(values, format_each<FormatContext>{formatting, i, out});
if (formatting.add_prepostfix_space) if (formatting.add_prepostfix_space) {
{
*out++ = ' '; *out++ = ' ';
} }
internal::copy(formatting.postfix, out); internal::copy(formatting.postfix, out);
@ -287,49 +252,46 @@ public:
} }
}; };
template<typename T> template <typename T>
struct is_range struct is_range {
{ static FMT_CONSTEXPR_DECL const bool value =
static FMT_CONSTEXPR_DECL const bool value = internal::is_range_<T>::value && !internal::is_like_std_string<T>::value; internal::is_range_<T>::value && !internal::is_like_std_string<T>::value;
}; };
template<typename RangeT, typename Char> template <typename RangeT, typename Char>
struct formatter<RangeT, Char, typename std::enable_if<fmt::is_range<RangeT>::value>::type> struct formatter<RangeT, Char,
{ typename std::enable_if<fmt::is_range<RangeT>::value>::type> {
formatting_range<Char> formatting; formatting_range<Char> formatting;
template<typename ParseContext> template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
{
return formatting.parse(ctx); return formatting.parse(ctx);
} }
template<typename FormatContext> template <typename FormatContext>
typename FormatContext::iterator format(const RangeT &values, FormatContext &ctx) typename FormatContext::iterator format(
{ const RangeT &values, FormatContext &ctx) {
auto out = ctx.out(); auto out = ctx.out();
internal::copy(formatting.prefix, out); internal::copy(formatting.prefix, out);
std::size_t i = 0; std::size_t i = 0;
for (auto it = values.begin(), end = values.end(); it != end; ++it) for (auto it = values.begin(), end = values.end(); it != end; ++it) {
{ if (i > 0) {
if (i > 0) if (formatting.add_prepostfix_space) {
{
if (formatting.add_prepostfix_space)
{
*out++ = ' '; *out++ = ' ';
} }
internal::copy(formatting.delimiter, out); internal::copy(formatting.delimiter, out);
} }
format_to(out, internal::format_str_quoted((formatting.add_delimiter_spaces && i > 0), *it), *it); format_to(out,
if (++i > formatting.range_length_limit) internal::format_str_quoted(
{ (formatting.add_delimiter_spaces && i > 0), *it),
*it);
if (++i > formatting.range_length_limit) {
format_to(out, " ... <other elements>"); format_to(out, " ... <other elements>");
break; break;
} }
} }
if (formatting.add_prepostfix_space) if (formatting.add_prepostfix_space) {
{
*out++ = ' '; *out++ = ' ';
} }
internal::copy(formatting.postfix, out); internal::copy(formatting.postfix, out);
@ -340,3 +302,4 @@ struct formatter<RangeT, Char, typename std::enable_if<fmt::is_range<RangeT>::va
FMT_END_NAMESPACE FMT_END_NAMESPACE
#endif // FMT_RANGES_H_ #endif // FMT_RANGES_H_

125
include/spdlog/fmt/bundled/time.h
View File

@ -13,66 +13,39 @@
FMT_BEGIN_NAMESPACE FMT_BEGIN_NAMESPACE
namespace internal { namespace internal{
inline null<> localtime_r(...) inline null<> localtime_r(...) { return null<>(); }
{ inline null<> localtime_s(...) { return null<>(); }
return null<>(); inline null<> gmtime_r(...) { return null<>(); }
inline null<> gmtime_s(...) { return null<>(); }
} }
inline null<> localtime_s(...)
{
return null<>();
}
inline null<> gmtime_r(...)
{
return null<>();
}
inline null<> gmtime_s(...)
{
return null<>();
}
} // namespace internal
// Thread-safe replacement for std::localtime // Thread-safe replacement for std::localtime
inline std::tm localtime(std::time_t time) inline std::tm localtime(std::time_t time) {
{ struct dispatcher {
struct dispatcher
{
std::time_t time_; std::time_t time_;
std::tm tm_; std::tm tm_;
dispatcher(std::time_t t) dispatcher(std::time_t t): time_(t) {}
: time_(t)
{
}
bool run() bool run() {
{
using namespace fmt::internal; using namespace fmt::internal;
return handle(localtime_r(&time_, &tm_)); return handle(localtime_r(&time_, &tm_));
} }
bool handle(std::tm *tm) bool handle(std::tm *tm) { return tm != FMT_NULL; }
{
return tm != FMT_NULL;
}
bool handle(internal::null<>) bool handle(internal::null<>) {
{
using namespace fmt::internal; using namespace fmt::internal;
return fallback(localtime_s(&tm_, &time_)); return fallback(localtime_s(&tm_, &time_));
} }
bool fallback(int res) bool fallback(int res) { return res == 0; }
{
return res == 0;
}
bool fallback(internal::null<>) bool fallback(internal::null<>) {
{
using namespace fmt::internal; using namespace fmt::internal;
std::tm *tm = std::localtime(&time_); std::tm *tm = std::localtime(&time_);
if (tm) if (tm) tm_ = *tm;
tm_ = *tm;
return tm != FMT_NULL; return tm != FMT_NULL;
} }
}; };
@ -84,45 +57,30 @@ inline std::tm localtime(std::time_t time)
} }
// Thread-safe replacement for std::gmtime // Thread-safe replacement for std::gmtime
inline std::tm gmtime(std::time_t time) inline std::tm gmtime(std::time_t time) {
{ struct dispatcher {
struct dispatcher
{
std::time_t time_; std::time_t time_;
std::tm tm_; std::tm tm_;
dispatcher(std::time_t t) dispatcher(std::time_t t): time_(t) {}
: time_(t)
{
}
bool run() bool run() {
{
using namespace fmt::internal; using namespace fmt::internal;
return handle(gmtime_r(&time_, &tm_)); return handle(gmtime_r(&time_, &tm_));
} }
bool handle(std::tm *tm) bool handle(std::tm *tm) { return tm != FMT_NULL; }
{
return tm != FMT_NULL;
}
bool handle(internal::null<>) bool handle(internal::null<>) {
{
using namespace fmt::internal; using namespace fmt::internal;
return fallback(gmtime_s(&tm_, &time_)); return fallback(gmtime_s(&tm_, &time_));
} }
bool fallback(int res) bool fallback(int res) { return res == 0; }
{
return res == 0;
}
bool fallback(internal::null<>) bool fallback(internal::null<>) {
{
std::tm *tm = std::gmtime(&time_); std::tm *tm = std::gmtime(&time_);
if (tm) if (tm) tm_ = *tm;
tm_ = *tm;
return tm != FMT_NULL; return tm != FMT_NULL;
} }
}; };
@ -134,23 +92,21 @@ inline std::tm gmtime(std::time_t time)
} }
namespace internal { namespace internal {
inline std::size_t strftime(char *str, std::size_t count, const char *format, const std::tm *time) inline std::size_t strftime(char *str, std::size_t count, const char *format,
{ const std::tm *time) {
return std::strftime(str, count, format, time); return std::strftime(str, count, format, time);
} }
inline std::size_t strftime(wchar_t *str, std::size_t count, const wchar_t *format, const std::tm *time) inline std::size_t strftime(wchar_t *str, std::size_t count,
{ const wchar_t *format, const std::tm *time) {
return std::wcsftime(str, count, format, time); return std::wcsftime(str, count, format, time);
} }
} // namespace internal }
template<typename Char> template <typename Char>
struct formatter<std::tm, Char> struct formatter<std::tm, Char> {
{ template <typename ParseContext>
template<typename ParseContext> auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
auto parse(ParseContext &ctx) -> decltype(ctx.begin())
{
auto it = internal::null_terminating_iterator<Char>(ctx); auto it = internal::null_terminating_iterator<Char>(ctx);
if (*it == ':') if (*it == ':')
++it; ++it;
@ -164,22 +120,19 @@ struct formatter<std::tm, Char>
return pointer_from(end); return pointer_from(end);
} }
template<typename FormatContext> template <typename FormatContext>
auto format(const std::tm &tm, FormatContext &ctx) -> decltype(ctx.out()) auto format(const std::tm &tm, FormatContext &ctx) -> decltype(ctx.out()) {
{
internal::basic_buffer<Char> &buf = internal::get_container(ctx.out()); internal::basic_buffer<Char> &buf = internal::get_container(ctx.out());
std::size_t start = buf.size(); std::size_t start = buf.size();
for (;;) for (;;) {
{
std::size_t size = buf.capacity() - start; std::size_t size = buf.capacity() - start;
std::size_t count = internal::strftime(&buf[start], size, &tm_format[0], &tm); std::size_t count =
if (count != 0) internal::strftime(&buf[start], size, &tm_format[0], &tm);
{ if (count != 0) {
buf.resize(start + count); buf.resize(start + count);
break; break;
} }
if (size >= tm_format.size() * 256) if (size >= tm_format.size() * 256) {
{
// If the buffer is 256 times larger than the format string, assume // If the buffer is 256 times larger than the format string, assume
// that `strftime` gives an empty result. There doesn't seem to be a // that `strftime` gives an empty result. There doesn't seem to be a
// better way to distinguish the two cases: // better way to distinguish the two cases: