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[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

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Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT
This commit is contained in:
Timo Kreuzer 2024-05-11 07:03:12 +02:00
parent f1b60c66f0
commit 04e0dc4a7a
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199
sdk/lib/ucrt/time/strftime.cpp Normal file
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//
// strftime.cpp
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// The strftime family of functions, which format time data into a string, and
// related functionality.
//
#include <corecrt_internal_time.h>
#include <locale.h>
//-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
//
// Day and Month Name and Time Locale Information Fetching Functions
//
//-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
extern "C" char* __cdecl _Getdays_l(_locale_t const locale)
{
_LocaleUpdate locale_update(locale);
__crt_lc_time_data const* const time_data = locale_update.GetLocaleT()->locinfo->lc_time_curr;
size_t length = 0;
for (size_t n = 0; n < 7; ++n)
{
length += strlen(time_data->wday_abbr[n]) + strlen(time_data->wday[n]) + 2;
}
__crt_unique_heap_ptr<char> buffer(_malloc_crt_t(char, length + 1));
if (buffer.get() == nullptr)
return nullptr;
char* it = buffer.get();
for (size_t n = 0; n < 7; ++n)
{
*it++ = ':';
_ERRCHECK(strcpy_s(it, (length + 1) - (it - buffer.get()), time_data->wday_abbr[n]));
it += strlen(it);
*it++ = ':';
_ERRCHECK(strcpy_s(it, (length + 1) - (it - buffer.get()), time_data->wday[n]));
it += strlen(it);
}
*it++ = '\0';
return buffer.detach();
}
extern "C" char* __cdecl _Getdays()
{
return _Getdays_l(nullptr);
}
extern "C" char* __cdecl _Getmonths_l(_locale_t const locale)
{
_LocaleUpdate locale_update(locale);
__crt_lc_time_data const* time_data = locale_update.GetLocaleT()->locinfo->lc_time_curr;
size_t length = 0;
for (size_t n = 0; n < 12; ++n)
{
length += strlen(time_data->month_abbr[n]) + strlen(time_data->month[n]) + 2;
}
__crt_unique_heap_ptr<char> buffer(_malloc_crt_t(char, length + 1));
if (buffer.get() == nullptr)
return nullptr;
char* it = buffer.get();
for (size_t n = 0; n < 12; ++n)
{
*it++ = ':';
_ERRCHECK(strcpy_s(it, (length + 1) - (it - buffer.get()), time_data->month_abbr[n]));
it += strlen(it);
*it++ = ':';
_ERRCHECK(strcpy_s(it, (length + 1) - (it - buffer.get()), time_data->month[n]));
it += strlen(it);
}
*it++ = '\0';
return buffer.detach();
}
extern "C" char* __cdecl _Getmonths()
{
return _Getmonths_l(nullptr);
}
extern "C" void* __cdecl _W_Gettnames();
extern "C" void* __cdecl _Gettnames()
{
return _W_Gettnames();
}
//-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
//
// The strftime family of functions
//
//-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// These functions format a time as a string using a given locale. They place
// characters into the user's output buffer, expanding time format directives as
// described in the provided control string. The lc_time_arg and locale are
// used for locale data.
//
// If the total number of characters that need to be written (including the null
// terminator) is less than the max_size, then the number of characters written
// (not including the null terminator) is returned. Otherwise, zero is returned.
//
// These functions simply delegate to the corresponding wide string functions
// (e.g. _wcsftime).
_Success_(return > 0)
extern "C" size_t __cdecl _Strftime_l (
_Out_writes_z_(maxsize) char * const string,
_In_ size_t const maxsize,
_In_z_ const char * const format,
_In_ const tm * const timeptr,
_In_ void * const lc_time_arg,
_In_opt_ _locale_t const locale
)
{
_LocaleUpdate locale_update(locale);
unsigned int const lc_time_cp = locale_update.GetLocaleT()->locinfo->lc_time_cp;
_VALIDATE_RETURN(string != nullptr, EINVAL, 0)
_VALIDATE_RETURN(maxsize != 0, EINVAL, 0)
*string = '\0';
_VALIDATE_RETURN(format != nullptr, EINVAL, 0)
_VALIDATE_RETURN(timeptr != nullptr, EINVAL, 0)
__crt_internal_win32_buffer<wchar_t> wformat;
errno_t const cvt1 = __acrt_mbs_to_wcs_cp(format, wformat, lc_time_cp);
if (cvt1 != 0) {
return 0;
}
// Allocate a new wide-char output string with the same size as the char*
// string one passed in as argument
__crt_unique_heap_ptr<wchar_t> const wstring(_malloc_crt_t(wchar_t, maxsize));
if (wstring.get() == nullptr)
{
// malloc should set the errno, if any
return 0;
}
size_t const wcsftime_result = _Wcsftime_l(wstring.get(), maxsize, wformat.data(), timeptr, lc_time_arg, locale);
if (wcsftime_result == 0)
{
return 0;
}
__crt_no_alloc_win32_buffer<char> copy_back(string, maxsize);
errno_t const cvt2 = __acrt_wcs_to_mbs_cp(wstring.get(), copy_back, lc_time_cp);
if (cvt2 != 0) {
return 0;
}
return copy_back.size();
}
extern "C" size_t __cdecl _Strftime(
char* const string,
size_t const max_size,
char const* const format,
tm const* const timeptr,
void* const lc_time_arg
)
{
return _Strftime_l(string, max_size, format, timeptr, lc_time_arg, nullptr);
}
extern "C" size_t __cdecl _strftime_l(
char* const string,
size_t const max_size,
char const* const format,
tm const* const timeptr,
_locale_t const locale
)
{
return _Strftime_l(string, max_size, format, timeptr, nullptr, locale);
}
extern "C" size_t __cdecl strftime(
char* const string,
size_t const max_size,
char const* const format,
tm const* const timeptr
)
{
return _Strftime_l(string, max_size, format, timeptr, nullptr, nullptr);
}