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helpers.h
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75 lines (60 loc) · 1.68 KB
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#pragma once
#include <string>
#include <algorithm>
#include <windows.h>
#ifdef SPM_EXPORT
#define SPM_DLLEXPORT __declspec(dllexport)
#else
#define SPM_DLLEXPORT __declspec(dllimport)
#endif
template <typename T>
std::basic_string<T> svaFormat(const T* format, va_list args)
{
int size;
if constexpr (std::is_same_v<T, char>)
size = vsnprintf(nullptr, 0, format, args);
else
size = _vsnwprintf(nullptr, 0, format, args);
size++; // Zero termination
std::basic_string<T> s;
s.resize(size);
if constexpr (std::is_same_v<T, char>)
vsnprintf(&s[0], size, format, args);
else
_vsnwprintf(&s[0], size, format, args);
return s;
}
//
// Formats string/wstring according to format, if formatting fails (e.g. invalid %s pointer - returns empty string)
//
template <typename T>
std::basic_string<T> sFormat(const T* format, ...)
{
va_list args;
va_start(args, format);
return svaFormat(format, args);
}
void SPM_DLLEXPORT throwFormat(const char* format, ...);
std::string SPM_DLLEXPORT GetLastErrorMessageA( DWORD code = GetLastError() );
void SPM_DLLEXPORT ThrowLastError( DWORD code = GetLastError() );
int SPM_DLLEXPORT ExecCmd( const wchar_t* cmd );
//
// Lowercases string
//
template <typename T>
std::basic_string<T> lowercase(const std::basic_string<T>& s)
{
std::basic_string<T> s2 = s;
std::transform(s2.begin(), s2.end(), s2.begin(), tolower);
return std::move(s2);
}
//
// Uppercases string
//
template <typename T>
std::basic_string<T> uppercase(const std::basic_string<T>& s)
{
std::basic_string<T> s2 = s;
std::transform(s2.begin(), s2.end(), s2.begin(), toupper);
return std::move(s2);
}