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Fix character encoding conversion issues

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This commit is contained in:
Gregor Parzefall 2023-10-05 17:55:55 +02:00 committed by sfan5
parent 93eebed8c9
commit c766c3a023
6 changed files with 60 additions and 79 deletions
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18
examples/AutomatedTest/test_string.cpp
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@ -168,22 +168,32 @@ static void test_methods()
static void test_conv()
{
// assumes Unicode and UTF-8 locale
setlocale(LC_CTYPE, "");
// locale-independent
stringw out;
multibyteToWString(out, "†††");
utf8ToWString(out, "†††");
UASSERTEQ(out.size(), 3);
for (int i = 0; i < 3; i++)
UASSERTEQ(static_cast<u16>(out[i]), 0x2020);
stringc out2;
wStringToMultibyte(out2, L"†††");
wStringToUTF8(out2, L"†††");
UASSERTEQ(out2.size(), 9);
for (int i = 0; i < 3; i++) {
UASSERTEQ(static_cast<u8>(out2[3*i]), 0xe2);
UASSERTEQ(static_cast<u8>(out2[3*i+1]), 0x80);
UASSERTEQ(static_cast<u8>(out2[3*i+2]), 0xa0);
}
// locale-dependent
if (!setlocale(LC_CTYPE, "C.UTF-8"))
setlocale(LC_CTYPE, "UTF-8"); // macOS
stringw out3;
multibyteToWString(out3, "†††");
UASSERTEQ(out3.size(), 3);
for (int i = 0; i < 3; i++)
UASSERTEQ(static_cast<u16>(out3[i]), 0x2020);
}
void test_irr_string()

97
include/irrString.h
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@ -11,6 +11,8 @@
#include <cstdio>
#include <cstring>
#include <cwchar>
#include <codecvt>
#include <locale>
namespace irr
{
@ -35,8 +37,13 @@ outside the string class for explicit use.
// forward declarations
template <typename T>
class string;
static size_t multibyteToWString(string<wchar_t>& destination, const char* source, u32 sourceSize);
static size_t wStringToMultibyte(string<c8>& destination, const wchar_t* source, u32 sourceSize);
//! Typedef for character strings
typedef string<c8> stringc;
//! Typedef for wide character strings
typedef string<wchar_t> stringw;
//! Returns a character converted to lower case
static inline u32 locale_lower ( u32 x )
@ -859,8 +866,11 @@ public:
return ret.size()-oldSize;
}
friend size_t multibyteToWString(string<wchar_t>& destination, const char* source, u32 sourceSize);
friend size_t wStringToMultibyte(string<c8>& destination, const wchar_t* source, u32 sourceSize);
// This function should not be used and is only kept for "CGUIFileOpenDialog::pathToStringW".
friend size_t multibyteToWString(stringw& destination, const stringc &source);
friend size_t utf8ToWString(stringw &destination, const char *source);
friend size_t wStringToUTF8(stringc &destination, const wchar_t *source);
private:
@ -913,38 +923,18 @@ private:
};
//! Typedef for character strings
typedef string<c8> stringc;
//! Typedef for wide character strings
typedef string<wchar_t> stringw;
//! Convert multibyte string to wide-character string
/** Wrapper around mbstowcs from standard library, but directly using Irrlicht string class.
What the function does exactly depends on the LC_CTYPE of the current c locale.
\param destination Wide-character string receiving the converted source
\param source multibyte string
\return The number of wide characters written to destination, not including the eventual terminating null character or -1 when conversion failed */
static inline size_t multibyteToWString(string<wchar_t>& destination, const core::string<c8>& source)
{
return multibyteToWString(destination, source.c_str(), (u32)source.size());
}
\return The number of wide characters written to destination, not including the eventual terminating null character or -1 when conversion failed
//! Convert multibyte string to wide-character string
/** Wrapper around mbstowcs from standard library, but directly writing to Irrlicht string class.
What the function does exactly depends on the LC_CTYPE of the current c locale.
\param destination Wide-character string receiving the converted source
\param source multibyte string
\return The number of wide characters written to destination, not including the eventual terminating null character or -1 when conversion failed. */
static inline size_t multibyteToWString(string<wchar_t>& destination, const char* source)
This function should not be used and is only kept for "CGUIFileOpenDialog::pathToStringW". */
inline size_t multibyteToWString(stringw& destination, const core::stringc& source)
{
const u32 s = source ? (u32)strlen(source) : 0;
return multibyteToWString(destination, source, s);
}
u32 sourceSize = source.size();
//! Internally used by the other multibyteToWString functions
static size_t multibyteToWString(string<wchar_t>& destination, const char* source, u32 sourceSize)
{
if ( sourceSize )
{
destination.str.resize(sourceSize+1);
@ -952,7 +942,7 @@ static size_t multibyteToWString(string<wchar_t>& destination, const char* sourc
#pragma warning(push)
#pragma warning(disable: 4996) // 'mbstowcs': This function or variable may be unsafe. Consider using mbstowcs_s instead.
#endif
const size_t written = mbstowcs(&destination[0], source, (size_t)sourceSize);
const size_t written = mbstowcs(&destination[0], source.c_str(), (size_t)sourceSize);
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
@ -975,50 +965,29 @@ static size_t multibyteToWString(string<wchar_t>& destination, const char* sourc
}
}
//! Same as multibyteToWString, but the other way around
static inline size_t wStringToMultibyte(string<c8>& destination, const core::string<wchar_t>& source)
inline size_t utf8ToWString(stringw &destination, const char *source)
{
return wStringToMultibyte(destination, source.c_str(), (u32)source.size());
std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
destination = conv.from_bytes(source);
return destination.size();
}
//! Same as multibyteToWString, but the other way around
static inline size_t wStringToMultibyte(string<c8>& destination, const wchar_t* source)
inline size_t utf8ToWString(stringw &destination, const stringc &source)
{
const u32 s = source ? (u32)wcslen(source) : 0;
return wStringToMultibyte(destination, source, s);
return utf8ToWString(destination, source.c_str());
}
//! Same as multibyteToWString, but the other way around
static size_t wStringToMultibyte(string<c8>& destination, const wchar_t* source, u32 sourceSize)
inline size_t wStringToUTF8(stringc &destination, const wchar_t *source)
{
if ( sourceSize )
{
destination.str.resize(sizeof(wchar_t)*sourceSize+1);
#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable: 4996) // 'wcstombs': This function or variable may be unsafe. Consider using wcstombs_s instead.
#endif
const size_t written = wcstombs(&destination[0], source, destination.size());
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
if ( written != (size_t)-1 )
{
destination.str.resize(written);
std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
destination = conv.to_bytes(source);
return destination.size();
}
else
inline size_t wStringToUTF8(stringc &destination, const stringw &source)
{
// Likely character which got converted until the invalid character was encountered are in destination now.
// And it seems even 0-terminated, but I found no documentation anywhere that this (the 0-termination) is guaranteed :-(
destination.clear();
}
return written;
}
else
{
destination.clear();
return 0;
}
return wStringToUTF8(destination, source.c_str());
}

10
source/Irrlicht/CGUIEditBox.cpp
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@ -299,7 +299,7 @@ bool CGUIEditBox::processKey(const SEvent& event)
const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
core::stringc s;
wStringToMultibyte(s, Text.subString(realmbgn, realmend - realmbgn));
wStringToUTF8(s, Text.subString(realmbgn, realmend - realmbgn));
Operator->copyToClipboard(s.c_str());
}
break;
@ -312,7 +312,7 @@ bool CGUIEditBox::processKey(const SEvent& event)
// copy
core::stringc sc;
wStringToMultibyte(sc, Text.subString(realmbgn, realmend - realmbgn));
wStringToUTF8(sc, Text.subString(realmbgn, realmend - realmbgn));
Operator->copyToClipboard(sc.c_str());
if (isEnabled())
@ -345,7 +345,7 @@ bool CGUIEditBox::processKey(const SEvent& event)
if (p)
{
irr::core::stringw widep;
core::multibyteToWString(widep, p);
core::utf8ToWString(widep, p);
if (MarkBegin == MarkEnd)
{
@ -1157,7 +1157,7 @@ bool CGUIEditBox::processMouse(const SEvent& event)
const c8 *inserted_text_utf8 = Operator->getTextFromPrimarySelection();
if (!inserted_text_utf8)
return inserted_text;
core::multibyteToWString(inserted_text, inserted_text_utf8);
core::utf8ToWString(inserted_text, inserted_text_utf8);
return inserted_text;
}());
@ -1659,7 +1659,7 @@ void CGUIEditBox::setTextMarkers(s32 begin, s32 end)
const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
core::stringc s;
wStringToMultibyte(s, Text.subString(realmbgn, realmend - realmbgn));
wStringToUTF8(s, Text.subString(realmbgn, realmend - realmbgn));
Operator->copyToPrimarySelection(s.c_str());
}

4
source/Irrlicht/CIrrDeviceSDL.cpp
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@ -673,7 +673,7 @@ bool CIrrDeviceSDL::run()
{
irrevent.EventType = irr::EET_STRING_INPUT_EVENT;
irrevent.StringInput.Str = new core::stringw();
irr::core::multibyteToWString(*irrevent.StringInput.Str, SDL_event.text.text);
irr::core::utf8ToWString(*irrevent.StringInput.Str, SDL_event.text.text);
postEventFromUser(irrevent);
delete irrevent.StringInput.Str;
irrevent.StringInput.Str = NULL;
@ -928,7 +928,7 @@ void CIrrDeviceSDL::sleep(u32 timeMs, bool pauseTimer)
void CIrrDeviceSDL::setWindowCaption(const wchar_t* text)
{
core::stringc textc;
core::wStringToMultibyte(textc, text);
core::wStringToUTF8(textc, text);
SDL_SetWindowTitle(Window, textc.c_str());
}

2
source/Irrlicht/CMakeLists.txt
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@ -50,6 +50,8 @@ elseif(MSVC)
if(CMAKE_SIZEOF_VOID_P EQUAL 4)
add_compile_options(/arch:SSE)
endif()
add_compile_options(/D_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING)
endif()
# Sanity-check version

4
source/Irrlicht/COSOperator.cpp
View File

@ -94,7 +94,7 @@ void COSOperator::copyToClipboard(const c8 *text) const
EmptyClipboard();
core::stringw tempbuffer;
core::multibyteToWString(tempbuffer, text);
core::utf8ToWString(tempbuffer, text);
const u32 size = (tempbuffer.size() + 1) * sizeof(wchar_t);
HGLOBAL clipbuffer;
@ -164,7 +164,7 @@ const c8* COSOperator::getTextFromClipboard() const
HANDLE hData = GetClipboardData( CF_UNICODETEXT );
buffer = (wchar_t*) GlobalLock( hData );
core::wStringToMultibyte(ClipboardBuf, buffer);
core::wStringToUTF8(ClipboardBuf, buffer);
GlobalUnlock( hData );
CloseClipboard();