Alexander Frick
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#include "strings.h"
|
|
|
|
std::wstring stringToWstring(const std::string& str) {
|
|
if (str.empty()) {
|
|
return std::wstring();
|
|
}
|
|
// Windows: convert UTF-8 → UTF-16
|
|
#ifdef _WIN32
|
|
// Get length of string
|
|
int wide_len = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, nullptr, 0);
|
|
if (wide_len == 0) {
|
|
throw std::runtime_error("MultiByteToWideChar failed!");
|
|
}
|
|
|
|
// Convert it!
|
|
std::wstring result(wide_len, L'\0');
|
|
MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, &result[0], wide_len);
|
|
|
|
// Remove the null terminator added by Windows API ugh
|
|
if (!result.empty() && result.back() == L'\0') {
|
|
result.pop_back();
|
|
}
|
|
// POSIX systems: convert UTF-8 → UTF-32 wchar_t
|
|
#else
|
|
// Set locale for multibyte conversion (thread-local)
|
|
std::mbstate_t state{};
|
|
const char* src = str.c_str();
|
|
// find required size
|
|
size_t len = std::mbsrtowcs(nullptr, &src, 0, &state);
|
|
if (len == static_cast<size_t>(-1)) {
|
|
throw std::runtime_error("mbsrtowcs failed");
|
|
}
|
|
|
|
std::wstring result(len, L'\0');
|
|
state = std::mbstate_t{};
|
|
src = str.c_str();
|
|
std::mbsrtowcs(result.data(), &src, len, &state);
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
std::string WstringToString(const std::wstring& wstr) {
|
|
if (wstr.empty()) {
|
|
return std::string();
|
|
}
|
|
}
|