1 files changed, 102 insertions, 0 deletions
diff --git a/setup_native/source/win32/customactions/reg4msdoc/msihelper.cxx b/setup_native/source/win32/customactions/reg4msdoc/msihelper.cxx
new file mode 100644
index 000000000000..2941ba5a8e27
--- /dev/null
+++ b/setup_native/source/win32/customactions/reg4msdoc/msihelper.cxx
@@ -0,0 +1,102 @@
+#include "msihelper.hxx"
+
+#include <malloc.h>
+#include <assert.h>
+
+bool GetMsiProp(MSIHANDLE handle, LPCTSTR name, /*out*/std::wstring& value)
+{
+    DWORD sz = 0;
+    LPTSTR dummy = TEXT("");
+    if (MsiGetProperty(handle, name, dummy, &sz) == ERROR_MORE_DATA)
+    {
+        sz++;
+        DWORD nbytes = sz * sizeof(TCHAR);
+        LPTSTR buff = reinterpret_cast<LPTSTR>(_alloca(nbytes));
+        ZeroMemory(buff, nbytes);
+        MsiGetProperty(handle, name, buff, &sz);
+        value = buff;
+        return true;
+    }
+    return false;
+}
+
+void SetMsiProp(MSIHANDLE handle, LPCTSTR name)
+{
+    MsiSetProperty(handle, name, TEXT("1"));
+}
+
+void UnsetMsiProp(MSIHANDLE handle, LPCTSTR name)
+{
+    MsiSetProperty(handle, name, TEXT(""));
+}
+
+bool IsSetMsiProp(MSIHANDLE handle, LPCTSTR name)
+{
+    std::wstring val;
+    GetMsiProp(handle, name, val);
+    return (val == TEXT("1"));
+}
+
+bool IsMsiPropNotEmpty(MSIHANDLE handle, LPCTSTR name)
+{
+    std::wstring val;
+    GetMsiProp(handle, name, val);
+    return (val != TEXT(""));
+}
+
+bool IsAllUserInstallation(MSIHANDLE handle)
+{
+    return IsSetMsiProp(handle, TEXT("ALLUSERS"));
+}
+
+std::wstring GetOfficeInstallationPath(MSIHANDLE handle)
+{
+    std::wstring progpath;
+    GetMsiProp(handle, TEXT("INSTALLLOCATION"), progpath);
+    return progpath;
+}
+
+std::wstring GetOfficeExecutablePath(MSIHANDLE handle)
+{
+    std::wstring exepath = GetOfficeInstallationPath(handle);
+    exepath += TEXT("program\\soffice.exe");
+    return exepath;
+}
+
+std::wstring GetProductName(MSIHANDLE handle)
+{
+    std::wstring prodname;
+    GetMsiProp(handle, TEXT("ProductName"), prodname);
+    return prodname;
+}
+
+bool IsModuleInstalled(MSIHANDLE handle, LPCTSTR name)
+{
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+    MsiGetFeatureState(handle, name, &current_state, &future_state);
+    return (current_state == INSTALLSTATE_LOCAL);
+}
+
+bool IsModuleSelectedForInstallation(MSIHANDLE handle, LPCTSTR name)
+{
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+    MsiGetFeatureState(handle, name, &current_state, &future_state);
+    return (future_state == INSTALLSTATE_LOCAL);
+}
+
+bool IsModuleSelectedForDeinstallation(MSIHANDLE handle, LPCTSTR name)
+{
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+    MsiGetFeatureState(handle, name, &current_state, &future_state);
+    return ((current_state == INSTALLSTATE_LOCAL) && (future_state == INSTALLSTATE_ABSENT));
+}
+
+bool IsCompleteDeinstallation(MSIHANDLE handle)
+{
+    std::wstring rm;
+    GetMsiProp(handle, TEXT("REMOVE"), rm);
+    return (rm == TEXT("ALL"));
+}