FORCEINLINE NTSTATUS RtlInitUnicodeStringEx()

in phnt/include/ntrtl.h [1469:1492]

• 19 lines of code
• 3 McCabe index (conditional complexity)

FORCEINLINE NTSTATUS RtlInitUnicodeStringEx(
    _Out_ PUNICODE_STRING DestinationString,
    _In_opt_z_ PCWSTR SourceString
    )
{
    size_t stringLength;

    DestinationString->Length = 0;
    DestinationString->Buffer = (PWCH)SourceString;

    if (!SourceString)
        return STATUS_SUCCESS;

    stringLength = wcslen(SourceString);

    if (stringLength <= UNICODE_STRING_MAX_CHARS - 1)
    {
        DestinationString->Length = (USHORT)stringLength * sizeof(WCHAR);
        DestinationString->MaximumLength = DestinationString->Length + sizeof(UNICODE_NULL);
        return STATUS_SUCCESS;
    }

    return STATUS_NAME_TOO_LONG;
}