[PATCH v3 4/4] propsys: Partially implement PropVariantToBuffer().

[Jactry Zeng]

Signed-off-by: Jactry Zeng 
---
 dlls/propsys/propsys.spec    |   2 +-
 dlls/propsys/propvar.c       |  26 +++++++++
 dlls/propsys/tests/propsys.c | 106 +++++++++++++++++++++++++++++++++++
 include/propvarutil.h        |   1 +
 4 files changed, 134 insertions(+), 1 deletion(-)

diff --git a/dlls/propsys/propsys.spec b/dlls/propsys/propsys.spec
index d9347e27ae..8416b6dc74 100644
--- a/dlls/propsys/propsys.spec
+++ b/dlls/propsys/propsys.spec
@@ -111,7 +111,7 @@
 @ stub PropVariantToBooleanVector
 @ stub PropVariantToBooleanVectorAlloc
 @ stub PropVariantToBooleanWithDefault
-@ stub PropVariantToBuffer
+@ stdcall PropVariantToBuffer(ptr ptr long)
 @ stdcall PropVariantToDouble(ptr ptr)
 @ stub PropVariantToDoubleVector
 @ stub PropVariantToDoubleVectorAlloc
diff --git a/dlls/propsys/propvar.c b/dlls/propsys/propvar.c
index 988cf81971..c56a737ede 100644
--- a/dlls/propsys/propvar.c
+++ b/dlls/propsys/propvar.c
@@ -306,6 +306,32 @@ HRESULT WINAPI PropVariantToBoolean(REFPROPVARIANT propvarIn, BOOL *ret)
     return hr;
 }

+HRESULT WINAPI PropVariantToBuffer(REFPROPVARIANT propvarIn, void *ret, UINT cb)
+{
+    HRESULT hr = S_OK;
+
+    TRACE("(%p, %p, %d)\n", propvarIn, ret, cb);
+
+    switch(propvarIn->vt)
+    {
+        case VT_VECTOR|VT_UI1:
+            if(cb > propvarIn->u.caub.cElems)
+                return E_FAIL;
+            memcpy(ret, propvarIn->u.caub.pElems, cb);
+            break;
+        case VT_ARRAY|VT_UI1:
+            FIXME("Unsupported type: VT_ARRAY|VT_UI1\n");
+            hr = E_NOTIMPL;
+            break;
+        default:
+            WARN("Unexpected type: %x\n", propvarIn->vt);
+            hr = E_INVALIDARG;
+    }
+
+    return hr;
+}
+
+
 HRESULT WINAPI PropVariantToString(REFPROPVARIANT propvarIn, PWSTR ret, UINT cch)
 {
     HRESULT hr;
diff --git a/dlls/propsys/tests/propsys.c b/dlls/propsys/tests/propsys.c
index 059b622544..c47729ea97 100644
--- a/dlls/propsys/tests/propsys.c
+++ b/dlls/propsys/tests/propsys.c
@@ -1407,6 +1407,111 @@ static void test_PropVariantToString(void)
     SysFreeString(propvar.u.bstrVal);
 }

+static void test_PropVariantToBuffer(void)
+{
+    PROPVARIANT propvar;
+    HRESULT hr;
+    UINT8 data[] = {1,2,3,4,5,6,7,8,9,10};
+    INT8 data_int8[] = {1,2,3,4,5,6,7,8,9,10};
+    SAFEARRAY *sa;
+    SAFEARRAYBOUND sabound;
+    void *pdata;
+    UINT8 buffer[256];
+
+    hr = InitPropVariantFromBuffer(data, 10, &propvar);
+    ok(hr == S_OK, "InitVariantFromBuffer failed 0x%08x.\n", hr);
+    hr = PropVariantToBuffer(&propvar, NULL, 0); /* crash when cb isn't zero */
+    ok(hr == S_OK, "PropVariantToBuffer failed: 0x%08x.\n", hr);
+    PropVariantClear(&propvar);
+
+    hr = InitPropVariantFromBuffer(data, 10, &propvar);
+    ok(hr == S_OK, "InitVariantFromBuffer failed 0x%08x.\n", hr);
+    hr = PropVariantToBuffer(&propvar, buffer, 10);
+    ok(hr == S_OK, "PropVariantToBuffer failed: 0x%08x.\n", hr);
+    ok(!memcmp(buffer, data, 10) && !buffer[10], "got wrong buffer.\n");
+    memset(buffer, 0, sizeof(buffer));
+    PropVariantClear(&propvar);
+
+    hr = InitPropVariantFromBuffer(data, 10, &propvar);
+    ok(hr == S_OK, "InitVariantFromBuffer failed 0x%08x.\n", hr);
+    buffer[0] = 99;
+    hr = PropVariantToBuffer(&propvar, buffer, 11);
+    ok(hr == E_FAIL, "PropVariantToBuffer returned: 0x%08x.\n", hr);
+    ok(buffer[0] == 99, "got wrong buffer.\n");
+    memset(buffer, 0, sizeof(buffer));
+    PropVariantClear(&propvar);
+
+    hr = InitPropVariantFromBuffer(data, 10, &propvar);
+    ok(hr == S_OK, "InitVariantFromBuffer failed 0x%08x.\n", hr);
+    hr = PropVariantToBuffer(&propvar, buffer, 9);
+    ok(hr == S_OK, "PropVariantToBuffer failed: 0x%08x.\n", hr);
+    ok(!memcmp(buffer, data, 9) && !buffer[9], "got wrong buffer.\n");
+    memset(buffer, 0, sizeof(buffer));
+    PropVariantClear(&propvar);
+
+    PropVariantInit(&propvar);
+    propvar.vt = VT_ARRAY|VT_UI1;
+    sabound.lLbound = 0;
+    sabound.cElements = sizeof(data);
+    sa = NULL;
+    sa = SafeArrayCreate(VT_UI1, 1, &sabound);
+    ok(sa != NULL, "SafeArrayCreate failed.\n");
+    hr = SafeArrayAccessData(sa, &pdata);
+    ok(hr == S_OK, "SafeArrayAccessData failed: 0x%08x.\n", hr);
+    memcpy(pdata, data, sizeof(data));
+    U(propvar).parray = sa;
+    buffer[0] = 99;
+    hr = PropVariantToBuffer(&propvar, buffer, 11);
+    todo_wine ok(hr == E_FAIL, "PropVariantToBuffer returned: 0x%08x.\n", hr);
+    ok(buffer[0] == 99, "got wrong buffer.\n");
+    memset(buffer, 0, sizeof(buffer));
+    SafeArrayDestroy(sa);
+    PropVariantClear(&propvar);
+
+    PropVariantInit(&propvar);
+    propvar.vt = VT_ARRAY|VT_UI1;
+    sabound.lLbound = 0;
+    sabound.cElements = sizeof(data);
+    sa = NULL;
+    sa = SafeArrayCreate(VT_UI1, 1, &sabound);
+    ok(sa != NULL, "SafeArrayCreate failed.\n");
+    hr = SafeArrayAccessData(sa, &pdata);
+    ok(hr == S_OK, "SafeArrayAccessData failed: 0x%08x.\n", hr);
+    memcpy(pdata, data, sizeof(data));
+    U(propvar).parray = sa;
+    hr = PropVariantToBuffer(&propvar, buffer, sizeof(data));
+    todo_wine ok(hr == S_OK, "PropVariantToBuffer failed: 0x%08x.\n", hr);
+    todo_wine ok(!memcmp(buffer, data, 10) && !buffer[10], "got wrong buffer.\n");
+    memset(buffer, 0, sizeof(buffer));
+    SafeArrayDestroy(sa);
+    PropVariantClear(&propvar);
+
+    PropVariantInit(&propvar);
+    propvar.vt = VT_VECTOR|VT_I1;
+    U(propvar).caub.pElems = CoTaskMemAlloc(sizeof(data_int8));
+    U(propvar).caub.cElems = sizeof(data_int8);
+    memcpy(U(propvar).caub.pElems, data_int8, sizeof(data_int8));
+    hr = PropVariantToBuffer(&propvar, buffer, sizeof(data_int8));
+    ok(hr == E_INVALIDARG, "PropVariantToBuffer failed: 0x%08x.\n", hr);
+    PropVariantClear(&propvar);
+
+    PropVariantInit(&propvar);
+    propvar.vt = VT_ARRAY|VT_I1;
+    sabound.lLbound = 0;
+    sabound.cElements = sizeof(data_int8);
+    sa = NULL;
+    sa = SafeArrayCreate(VT_I1, 1, &sabound);
+    ok(sa != NULL, "SafeArrayCreate failed.\n");
+    hr = SafeArrayAccessData(sa, &pdata);
+    ok(hr == S_OK, "SafeArrayAccessData failed: 0x%08x.\n", hr);
+    memcpy(pdata, data_int8, sizeof(data_int8));
+    U(propvar).parray = sa;
+    hr = PropVariantToBuffer(&propvar, buffer, sizeof(data_int8));
+    ok(hr == E_INVALIDARG, "PropVariantToBuffer failed: 0x%08x.\n", hr);
+    SafeArrayDestroy(sa);
+    PropVariantClear(&propvar);
+}
+
 START_TEST(propsys)
 {
     test_PSStringFromPropertyKey();
@@ -1424,4 +1529,5 @@ START_TEST(propsys)
     test_InitPropVariantFromCLSID();
     test_PropVariantToDouble();
     test_PropVariantToString();
+    test_PropVariantToBuffer();
 }
diff --git a/include/propvarutil.h b/include/propvarutil.h
index 4fb12d87eb..a4eedefdb6 100644
--- a/include/propvarutil.h
+++ b/include/propvarutil.h
@@ -79,6 +79,7 @@ HRESULT WINAPI PropVariantToUInt16(REFPROPVARIANT propvarIn, USHORT *ret);
 HRESULT WINAPI PropVariantToUInt32(REFPROPVARIANT propvarIn, ULONG *ret);
 HRESULT WINAPI PropVariantToUInt64(REFPROPVARIANT propvarIn, ULONGLONG *ret);
 HRESULT WINAPI PropVariantToBoolean(REFPROPVARIANT propvarIn, BOOL *ret);
+HRESULT WINAPI PropVariantToBuffer(REFPROPVARIANT propvarIn, void *ret, UINT cb);
 HRESULT WINAPI PropVariantToString(REFPROPVARIANT propvarIn, PWSTR ret, UINT cch);
 PCWSTR WINAPI PropVariantToStringWithDefault(REFPROPVARIANT propvarIn, LPCWSTR pszDefault);

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov