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Introduce NormalizeString<>()

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2021-03-25 10:33:24 +01:00
parent 96e1882405
commit 96197da77e
1 changed files with 94 additions and 0 deletions
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94
include/WinStd/Win.h
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@ -292,6 +292,22 @@ template<class _Ax> inline _Success_(return != 0) int SecureMultiByteToWideChar(
///
template<class _Traits1, class _Ax1, class _Traits2, class _Ax2> inline _Success_(return != 0) int SecureMultiByteToWideChar(_In_ UINT CodePage, _In_ DWORD dwFlags, _In_ const std::basic_string<char, _Traits1, _Ax1> &sMultiByteStr, _Out_ std::basic_string<wchar_t, _Traits2, _Ax2> &sWideCharStr) noexcept;
///
/// Normalizes characters of a text string according to Unicode 4.0 TR#15.
///
/// \sa [NormalizeString function](https://docs.microsoft.com/en-us/windows/win32/api/winnls/nf-winnls-normalizestring)
///
template<class _Traits, class _Ax>
inline _Success_(return > 0) int NormalizeString(_In_ NORM_FORM NormForm, _In_ LPCWSTR lpSrcString, _In_ int cwSrcLength, _Out_ std::basic_string<wchar_t, _Traits, _Ax> &sDstString) noexcept;
///
/// Normalizes characters of a text string according to Unicode 4.0 TR#15.
///
/// \sa [NormalizeString function](https://docs.microsoft.com/en-us/windows/win32/api/winnls/nf-winnls-normalizestring)
///
template<class _Traits1, class _Ax1, class _Traits2, class _Ax2>
inline _Success_(return > 0) int NormalizeString(_In_ NORM_FORM NormForm, _In_ const std::basic_string<wchar_t, _Traits1, _Ax1> &sSrcString, _Out_ std::basic_string<wchar_t, _Traits2, _Ax2> &sDstString) noexcept;
/// @copydoc LoadStringW
template<class _Traits, class _Ax> inline _Success_(return != 0) int WINAPI LoadStringA(_In_opt_ HINSTANCE hInstance, _In_ UINT uID, _Out_ std::basic_string<char, _Traits, _Ax> &sBuffer) noexcept;
@ -1827,6 +1843,84 @@ inline _Success_(return != 0) int SecureMultiByteToWideChar(_In_ UINT CodePage,
}
template<class _Traits, class _Ax>
inline _Success_(return > 0) int NormalizeString(_In_ NORM_FORM NormForm, _In_ LPCWSTR lpSrcString, _In_ int cwSrcLength, _Out_ std::basic_string<wchar_t, _Traits, _Ax> &sDstString) noexcept
{
WCHAR szStackBuffer[WINSTD_STACK_BUFFER_BYTES/sizeof(WCHAR)];
// Try to convert to stack buffer first.
int cch = ::NormalizeString(NormForm, lpSrcString, cwSrcLength, szStackBuffer, _countof(szStackBuffer));
if (cch > 0) {
// Copy from stack.
sDstString.assign(szStackBuffer, cwSrcLength != -1 ? wcsnlen(szStackBuffer, cch) : (size_t)cch - 1);
} else {
switch (::GetLastError()) {
case ERROR_INSUFFICIENT_BUFFER:
for (int i = 10; i--;) {
// Allocate buffer. Then convert again.
cch = -cch;
std::unique_ptr<WCHAR[]> szBuffer(new WCHAR[cch]);
cch = ::NormalizeString(NormForm, lpSrcString, cwSrcLength, szBuffer.get(), cch);
if (cch > 0) {
sDstString.assign(szBuffer.get(), cwSrcLength != -1 ? wcsnlen(szStackBuffer, cch) : (size_t)cch - 1);
break;
}
if (::GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
sDstString.clear();
break;
}
}
break;
case ERROR_SUCCESS:
sDstString.clear();
break;
}
}
return cch;
}
template<class _Traits1, class _Ax1, class _Traits2, class _Ax2>
inline _Success_(return > 0) int NormalizeString(_In_ NORM_FORM NormForm, _In_ const std::basic_string<wchar_t, _Traits1, _Ax1> &sSrcString, _Out_ std::basic_string<wchar_t, _Traits2, _Ax2> &sDstString) noexcept
{
WCHAR szStackBuffer[WINSTD_STACK_BUFFER_BYTES/sizeof(WCHAR)];
// Try to convert to stack buffer first.
int cch = ::NormalizeString(NormForm, sSrcString.c_str(), (int)sSrcString.length(), szStackBuffer, _countof(szStackBuffer));
if (cch > 0) {
// Copy from stack.
sDstString.assign(szStackBuffer, cch);
} else {
switch (::GetLastError()) {
case ERROR_INSUFFICIENT_BUFFER:
for (int i = 10; i--;) {
// Allocate buffer. Then convert again.
cch = -cch;
std::unique_ptr<WCHAR[]> szBuffer(new WCHAR[cch]);
cch = ::NormalizeString(NormForm, sSrcString.c_str(), (int)sSrcString.length(), szBuffer.get(), cch);
if (cch > 0) {
sDstString.assign(szBuffer.get(), cch);
break;
}
if (::GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
sDstString.clear();
break;
}
}
break;
case ERROR_SUCCESS:
sDstString.clear();
break;
}
}
return cch;
}
template<class _Traits, class _Ax>
inline _Success_(return != 0) int WINAPI LoadStringA(_In_opt_ HINSTANCE hInstance, _In_ UINT uID, _Out_ std::basic_string<char, _Traits, _Ax> &sBuffer) noexcept
{