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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485//// strdate.cpp//// Copyright (c) Microsoft Corporation. All rights reserved.//// The strdate() family of functions, which return the current data as a string.//#include <corecrt_internal_securecrt.h>#include <corecrt_internal_time.h>
// Returns the current date as a string of the form "MM/DD/YY". These functions// return an error code on failure, or zero on success. The buffer must be at// least nine characters in size.template <typename Character>static errno_t __cdecl common_strdate_s( _Out_writes_z_(size_in_chars) Character* const buffer, _In_ _In_range_(>=, 9) size_t const size_in_chars ) throw(){ _VALIDATE_RETURN_ERRCODE(buffer != nullptr && size_in_chars > 0, EINVAL); _RESET_STRING(buffer, size_in_chars); _VALIDATE_RETURN_ERRCODE(size_in_chars >= 9, ERANGE);
SYSTEMTIME local_time; GetLocalTime(&local_time);
int const month = local_time.wMonth; int const day = local_time.wDay; int const year = local_time.wYear % 100;
static Character const zero_char = static_cast<Character>('0');
#pragma warning(disable:__WARNING_POTENTIAL_BUFFER_OVERFLOW_HIGH_PRIORITY) // 26015
// Store the components of the date into the string in MM/DD/YY form: buffer[0] = static_cast<Character>(month / 10 + zero_char); // Tens of month buffer[1] = static_cast<Character>(month % 10 + zero_char); // Units of month buffer[2] = static_cast<Character>('/'); buffer[3] = static_cast<Character>(day / 10 + zero_char); // Tens of day buffer[4] = static_cast<Character>(day % 10 + zero_char); // Units of day buffer[5] = static_cast<Character>('/'); buffer[6] = static_cast<Character>(year / 10 + zero_char); // Tens of year buffer[7] = static_cast<Character>(year % 10 + zero_char); // Units of year buffer[8] = static_cast<Character>('\0');
return 0;}
extern "C" errno_t __cdecl _strdate_s(char* const buffer, size_t const size_in_chars){ return common_strdate_s(buffer, size_in_chars);}
extern "C" errno_t __cdecl _wstrdate_s(wchar_t* const buffer, size_t const size_in_chars){ return common_strdate_s(buffer, size_in_chars);}
// Returns the current date as a string of the form "MM/DD/YY". These functions// assume that the provided result buffer is at least nine characters in length.// Each returns the buffer on success, or null on failure.template <typename Character>_Success_(return != 0)static Character* __cdecl common_strdate(_Out_writes_z_(9) Character* const buffer) throw(){ errno_t const status = common_strdate_s(buffer, 9); if (status != 0) return nullptr;
return buffer;}
extern "C" char* __cdecl _strdate(char* const buffer){ return common_strdate(buffer);}
extern "C" wchar_t* __cdecl _wstrdate(wchar_t* const buffer){ return common_strdate(buffer);}