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-rwxr-xr-xCPP/Windows/PropVariant.cpp243
1 files changed, 243 insertions, 0 deletions
diff --git a/CPP/Windows/PropVariant.cpp b/CPP/Windows/PropVariant.cpp
new file mode 100755
index 0000000..bcd85a5
--- /dev/null
+++ b/CPP/Windows/PropVariant.cpp
@@ -0,0 +1,243 @@
+// Windows/PropVariant.cpp
+
+#include "StdAfx.h"
+
+#include "PropVariant.h"
+
+#include "../Common/Defs.h"
+
+namespace NWindows {
+namespace NCOM {
+
+CPropVariant::CPropVariant(const PROPVARIANT &varSrc)
+{
+ vt = VT_EMPTY;
+ InternalCopy(&varSrc);
+}
+
+CPropVariant::CPropVariant(const CPropVariant &varSrc)
+{
+ vt = VT_EMPTY;
+ InternalCopy(&varSrc);
+}
+
+CPropVariant::CPropVariant(BSTR bstrSrc)
+{
+ vt = VT_EMPTY;
+ *this = bstrSrc;
+}
+
+CPropVariant::CPropVariant(LPCOLESTR lpszSrc)
+{
+ vt = VT_EMPTY;
+ *this = lpszSrc;
+}
+
+CPropVariant& CPropVariant::operator=(const CPropVariant &varSrc)
+{
+ InternalCopy(&varSrc);
+ return *this;
+}
+CPropVariant& CPropVariant::operator=(const PROPVARIANT &varSrc)
+{
+ InternalCopy(&varSrc);
+ return *this;
+}
+
+CPropVariant& CPropVariant::operator=(BSTR bstrSrc)
+{
+ *this = (LPCOLESTR)bstrSrc;
+ return *this;
+}
+
+static const char *kMemException = "out of memory";
+
+CPropVariant& CPropVariant::operator=(LPCOLESTR lpszSrc)
+{
+ InternalClear();
+ vt = VT_BSTR;
+ wReserved1 = 0;
+ bstrVal = ::SysAllocString(lpszSrc);
+ if (bstrVal == NULL && lpszSrc != NULL)
+ {
+ throw kMemException;
+ // vt = VT_ERROR;
+ // scode = E_OUTOFMEMORY;
+ }
+ return *this;
+}
+
+
+CPropVariant& CPropVariant::operator=(const char *s)
+{
+ InternalClear();
+ vt = VT_BSTR;
+ wReserved1 = 0;
+ UINT len = (UINT)strlen(s);
+ bstrVal = ::SysAllocStringByteLen(0, (UINT)len * sizeof(OLECHAR));
+ if (bstrVal == NULL)
+ {
+ throw kMemException;
+ // vt = VT_ERROR;
+ // scode = E_OUTOFMEMORY;
+ }
+ else
+ {
+ for (UINT i = 0; i <= len; i++)
+ bstrVal[i] = s[i];
+ }
+ return *this;
+}
+
+CPropVariant& CPropVariant::operator=(bool bSrc)
+{
+ if (vt != VT_BOOL)
+ {
+ InternalClear();
+ vt = VT_BOOL;
+ }
+ boolVal = bSrc ? VARIANT_TRUE : VARIANT_FALSE;
+ return *this;
+}
+
+#define SET_PROP_FUNC(type, id, dest) \
+ CPropVariant& CPropVariant::operator=(type value) \
+ { if (vt != id) { InternalClear(); vt = id; } \
+ dest = value; return *this; }
+
+SET_PROP_FUNC(Byte, VT_UI1, bVal)
+SET_PROP_FUNC(Int16, VT_I2, iVal)
+SET_PROP_FUNC(Int32, VT_I4, lVal)
+SET_PROP_FUNC(UInt32, VT_UI4, ulVal)
+SET_PROP_FUNC(UInt64, VT_UI8, uhVal.QuadPart)
+SET_PROP_FUNC(const FILETIME &, VT_FILETIME, filetime)
+
+static HRESULT MyPropVariantClear(PROPVARIANT *prop)
+{
+ switch(prop->vt)
+ {
+ case VT_UI1:
+ case VT_I1:
+ case VT_I2:
+ case VT_UI2:
+ case VT_BOOL:
+ case VT_I4:
+ case VT_UI4:
+ case VT_R4:
+ case VT_INT:
+ case VT_UINT:
+ case VT_ERROR:
+ case VT_FILETIME:
+ case VT_UI8:
+ case VT_R8:
+ case VT_CY:
+ case VT_DATE:
+ prop->vt = VT_EMPTY;
+ prop->wReserved1 = 0;
+ return S_OK;
+ }
+ return ::VariantClear((VARIANTARG *)prop);
+}
+
+HRESULT CPropVariant::Clear()
+{
+ return MyPropVariantClear(this);
+}
+
+HRESULT CPropVariant::Copy(const PROPVARIANT* pSrc)
+{
+ ::VariantClear((tagVARIANT *)this);
+ switch(pSrc->vt)
+ {
+ case VT_UI1:
+ case VT_I1:
+ case VT_I2:
+ case VT_UI2:
+ case VT_BOOL:
+ case VT_I4:
+ case VT_UI4:
+ case VT_R4:
+ case VT_INT:
+ case VT_UINT:
+ case VT_ERROR:
+ case VT_FILETIME:
+ case VT_UI8:
+ case VT_R8:
+ case VT_CY:
+ case VT_DATE:
+ memmove((PROPVARIANT*)this, pSrc, sizeof(PROPVARIANT));
+ return S_OK;
+ }
+ return ::VariantCopy((tagVARIANT *)this, (tagVARIANT *)const_cast<PROPVARIANT *>(pSrc));
+}
+
+
+HRESULT CPropVariant::Attach(PROPVARIANT *pSrc)
+{
+ HRESULT hr = Clear();
+ if (FAILED(hr))
+ return hr;
+ memcpy(this, pSrc, sizeof(PROPVARIANT));
+ pSrc->vt = VT_EMPTY;
+ return S_OK;
+}
+
+HRESULT CPropVariant::Detach(PROPVARIANT *pDest)
+{
+ HRESULT hr = MyPropVariantClear(pDest);
+ if (FAILED(hr))
+ return hr;
+ memcpy(pDest, this, sizeof(PROPVARIANT));
+ vt = VT_EMPTY;
+ return S_OK;
+}
+
+HRESULT CPropVariant::InternalClear()
+{
+ HRESULT hr = Clear();
+ if (FAILED(hr))
+ {
+ vt = VT_ERROR;
+ scode = hr;
+ }
+ return hr;
+}
+
+void CPropVariant::InternalCopy(const PROPVARIANT *pSrc)
+{
+ HRESULT hr = Copy(pSrc);
+ if (FAILED(hr))
+ {
+ if (hr == E_OUTOFMEMORY)
+ throw kMemException;
+ vt = VT_ERROR;
+ scode = hr;
+ }
+}
+
+int CPropVariant::Compare(const CPropVariant &a)
+{
+ if (vt != a.vt)
+ return MyCompare(vt, a.vt);
+ switch (vt)
+ {
+ case VT_EMPTY: return 0;
+ // case VT_I1: return MyCompare(cVal, a.cVal);
+ case VT_UI1: return MyCompare(bVal, a.bVal);
+ case VT_I2: return MyCompare(iVal, a.iVal);
+ case VT_UI2: return MyCompare(uiVal, a.uiVal);
+ case VT_I4: return MyCompare(lVal, a.lVal);
+ case VT_UI4: return MyCompare(ulVal, a.ulVal);
+ // case VT_UINT: return MyCompare(uintVal, a.uintVal);
+ case VT_I8: return MyCompare(hVal.QuadPart, a.hVal.QuadPart);
+ case VT_UI8: return MyCompare(uhVal.QuadPart, a.uhVal.QuadPart);
+ case VT_BOOL: return -MyCompare(boolVal, a.boolVal);
+ case VT_FILETIME: return ::CompareFileTime(&filetime, &a.filetime);
+ case VT_BSTR:
+ return 0; // Not implemented
+ // return MyCompare(aPropVarint.cVal);
+ default: return 0;
+ }
+}
+
+}}