Mohamad Al-Jaf : propsys: Implement VariantToStringWithDefault.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: bf0f1fdcf80657a42116b79a0953181191cf9221
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=bf0f1fdcf80657a42116b79a0...

Author: Mohamad Al-Jaf <mohamadaljaf(a)gmail.com>
Date:   Fri Apr  1 16:10:13 2022 +0300

propsys: Implement VariantToStringWithDefault.

Signed-off-by: Mohamad Al-Jaf <mohamadaljaf(a)gmail.com>
Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/propsys/propsys.spec |  2 +-
 dlls/propsys/propvar.c    | 16 ++++++++++++++++
 include/propvarutil.h     |  1 +
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/dlls/propsys/propsys.spec b/dlls/propsys/propsys.spec
index 15749952e95..7391cf4aaa2 100644
--- a/dlls/propsys/propsys.spec
+++ b/dlls/propsys/propsys.spec
@@ -194,7 +194,7 @@
 @ stub VariantToStringAlloc
 @ stub VariantToStringArray
 @ stub VariantToStringArrayAlloc
-@ stub VariantToStringWithDefault
+@ stdcall VariantToStringWithDefault(ptr wstr)
 @ stub VariantToUInt16
 @ stub VariantToUInt16Array
 @ stub VariantToUInt16ArrayAlloc
diff --git a/dlls/propsys/propvar.c b/dlls/propsys/propvar.c
index 8f6c52f7aa7..cd92912fde5 100644
--- a/dlls/propsys/propvar.c
+++ b/dlls/propsys/propvar.c
@@ -416,6 +416,22 @@ PCWSTR WINAPI PropVariantToStringWithDefault(REFPROPVARIANT propvarIn, LPCWSTR p
     return pszDefault;
 }
 
+/******************************************************************
+ *  VariantToStringWithDefault   (PROPSYS.@)
+ */
+PCWSTR WINAPI VariantToStringWithDefault(const VARIANT *pvar, const WCHAR *default_value)
+{
+    TRACE("%s, %s.\n", debugstr_variant(pvar), debugstr_w(default_value));
+
+    if (V_VT(pvar) == (VT_BYREF | VT_VARIANT)) pvar = V_VARIANTREF(pvar);
+    if (V_VT(pvar) == (VT_BYREF | VT_BSTR) || V_VT(pvar) == VT_BSTR)
+    {
+        BSTR ret = V_ISBYREF(pvar) ? *V_BSTRREF(pvar) : V_BSTR(pvar);
+        return ret ? ret : L"";
+    }
+
+    return default_value;
+}
 
 /******************************************************************
  *  PropVariantChangeType   (PROPSYS.@)
diff --git a/include/propvarutil.h b/include/propvarutil.h
index 36a670f56e6..fcc532fd623 100644
--- a/include/propvarutil.h
+++ b/include/propvarutil.h
@@ -93,6 +93,7 @@ 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);
+PCWSTR WINAPI VariantToStringWithDefault(const VARIANT *pvar, LPCWSTR pszDefault);
 
 HRESULT WINAPI PropVariantToStringAlloc(REFPROPVARIANT propvarIn, WCHAR **ret);