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Replace std::codecvt by MultiByteToWideChar due to deprecation #29

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merged 3 commits into from
Oct 1, 2024
Merged

Replace std::codecvt by MultiByteToWideChar due to deprecation #29

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a89d990
Replace std::codecvt for UTF-8 to UTF-16 conversions under Windows by…
doomlaur Sep 29, 2024
27ed418
Improved code based on feedback.
doomlaur Sep 30, 2024
f9506f2
Added a unit test for empty paths under MSVC with wide strings - just…
doomlaur Oct 1, 2024
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10 changes: 6 additions & 4 deletions source/utils/path.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
// @author: see AUTHORS file

#include <algorithm>
#include <cassert>
#include <fstream>
#include <iterator>
#include <sstream>
Expand Down Expand Up @@ -230,13 +231,14 @@ const std::string &path::string() const
std::wstring path::wstring() const
{
const std::string &path_str = string();
int size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, path_str.c_str(), static_cast<int>(path_str.length()), nullptr, 0);
const int allocated_size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, path_str.c_str(), static_cast<int>(path_str.length()), nullptr, 0);

if (size > 0)
if (allocated_size > 0)
{
std::wstring path_converted(size, L'\0');
std::wstring path_converted(allocated_size, L'\0');
// Note: const_cast is NOT necessary in C++17 and newer!
size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, path_str.c_str(), static_cast<int>(path_str.length()), const_cast<wchar_t *>(path_converted.data()), size);
const int actual_size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, path_str.c_str(), static_cast<int>(path_str.length()), &path_converted.at(0), allocated_size);
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assert(allocated_size == actual_size); // unless a serious error happened, this MUST always be true!
return path_converted;
}
else
Expand Down