headers: Add HString class in corewrappers.h
Required for https://github.com/mozilla/gecko-dev/blob/0ac09833d9e39b4d1362d0373d5e68ddba7c1b71/intl/locale/windows/OSPreferences_win.cpp#L47
Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
Signed-off-by: LIU Hao <lh_mouse@126.com>
diff --git a/mingw-w64-headers/include/wrl/wrappers/corewrappers.h b/mingw-w64-headers/include/wrl/wrappers/corewrappers.h
index 221d9cc..ca175f5 100644
--- a/mingw-w64-headers/include/wrl/wrappers/corewrappers.h
+++ b/mingw-w64-headers/include/wrl/wrappers/corewrappers.h
@@ -22,6 +22,158 @@
}
namespace Wrappers {
+ class HStringReference;
+
+ class HString {
+ public:
+ HString() throw() : hstr_(nullptr) {}
+
+ HString(HString&& o) throw() : hstr_(o.hstr_) {
+ o.hstr_ = nullptr;
+ }
+
+ HString(const HString&) = delete;
+ HString& operator=(const HString&) = delete;
+
+ operator HSTRING() const throw() {
+ return hstr_;
+ }
+
+ ~HString() throw() {
+ Release();
+ }
+
+ HString& operator=(HString&& o) throw() {
+ Release();
+ hstr_ = o.hstr_;
+ o.hstr_ = nullptr;
+ return *this;
+ }
+
+ HRESULT Set(const wchar_t *s, unsigned int l) throw() {
+ Release();
+ return ::WindowsCreateString(s, l, &hstr_);
+ }
+
+ HRESULT Set(const HSTRING& s) throw() {
+ HRESULT hr = S_OK;
+ if (s == nullptr || s != hstr_) {
+ Release();
+ hr = ::WindowsDuplicateString(s, &hstr_);
+ }
+ return hr;
+ }
+
+ void Attach(HSTRING h) throw() {
+ ::WindowsDeleteString(hstr_);
+ hstr_ = h;
+ }
+
+ HSTRING Detach() throw() {
+ HSTRING t = hstr_;
+ hstr_ = nullptr;
+ return t;
+ }
+
+ HSTRING* GetAddressOf() throw() {
+ Release();
+ return &hstr_;
+ }
+
+ HSTRING* ReleaseAndGetAddressOf() throw() {
+ Release();
+ return &hstr_;
+ }
+
+ HSTRING Get() const throw() {
+ return hstr_;
+ }
+
+ void Release() throw() {
+ ::WindowsDeleteString(hstr_);
+ hstr_ = nullptr;
+ }
+
+ bool IsValid() const throw() {
+ return hstr_ != nullptr;
+ }
+
+ UINT32 Length() const throw() {
+ return ::WindowsGetStringLen(hstr_);
+ }
+
+ const wchar_t* GetRawBuffer(unsigned int *l) const {
+ return ::WindowsGetStringRawBuffer(hstr_, l);
+ }
+
+ HRESULT CopyTo(HSTRING *s) const throw() {
+ return ::WindowsDuplicateString(hstr_, s);
+ }
+
+ HRESULT Duplicate(const HString& o) throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsDuplicateString(o, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, *this);
+ }
+
+ bool IsEmpty() const throw() {
+ return hstr_ == nullptr;
+ }
+
+ HRESULT Concat(const HString& s, HString& n) const throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsConcatString(hstr_, s, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, n);
+ }
+
+ HRESULT TrimStart(const HString& t, HString& n) const throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsTrimStringStart(hstr_, t, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, n);
+ }
+
+ HRESULT TrimEnd(const HString& t, HString& n) const throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsTrimStringEnd(hstr_, t, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, n);
+ }
+
+ HRESULT Substring(UINT32 s, HString& n) const throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsSubstring(hstr_, s, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, n);
+ }
+
+ HRESULT Substring(UINT32 s, UINT32 len, HString& n) const throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsSubstringWithSpecifiedLength(hstr_, s, len, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, n);
+ }
+
+ HRESULT Replace(const HString& s1, const HString& s2, HString& n) const throw() {
+ HSTRING l;
+ HRESULT hr = ::WindowsReplaceString(hstr_, s1, s2, &l);
+ return ReleaseAndAssignOnSuccess(hr, l, n);
+ }
+
+ template<unsigned int s>
+ static HStringReference MakeReference(wchar_t const (&str)[s]) throw();
+
+ template<unsigned int s>
+ static HStringReference MakeReference(wchar_t const (&str)[s], unsigned int l) throw();
+
+ private:
+ static HRESULT ReleaseAndAssignOnSuccess(HRESULT hr, HSTRING n, HString& t) {
+ if (SUCCEEDED(hr)) {
+ *t.ReleaseAndGetAddressOf() = n;
+ }
+ return hr;
+ }
+
+ protected:
+ HSTRING hstr_;
+ };
+
class HStringReference {
private:
void Init(const wchar_t* str, unsigned int len) {
