NTSTATUS NTAPI
ConDrvGetConsoleInput(IN PCONSOLE Console,
IN PCONSOLE_INPUT_BUFFER InputBuffer,
IN BOOLEAN KeepEvents,
IN BOOLEAN WaitForMoreEvents,
IN BOOLEAN Unicode,
OUT PINPUT_RECORD InputRecord,
IN ULONG NumEventsToRead,
OUT PULONG NumEventsRead OPTIONAL)
{
PLIST_ENTRY CurrentInput;
ConsoleInput* Input;
ULONG i = 0;
if (Console == NULL || InputBuffer == NULL /* || InputRecord == NULL */)
return STATUS_INVALID_PARAMETER;
/* Validity checks */
ASSERT(Console == InputBuffer->Header.Console);
ASSERT( (InputRecord != NULL && NumEventsToRead >= 0) ||
(InputRecord == NULL && NumEventsToRead == 0) );
// Do NOT do that !! Use the existing number of events already read, if any...
// if (NumEventsRead) *NumEventsRead = 0;
if (IsListEmpty(&InputBuffer->InputEvents))
{
/*
* No input is available. Wait for more input if requested,
* otherwise, we don't wait, so we return success.
*/
return (WaitForMoreEvents ? STATUS_PENDING : STATUS_SUCCESS);
}
/* Only get input if there is any */
CurrentInput = InputBuffer->InputEvents.Flink;
if (NumEventsRead) i = *NumEventsRead; // We will read the remaining events...
while ((CurrentInput != &InputBuffer->InputEvents) && (i < NumEventsToRead))
{
Input = CONTAINING_RECORD(CurrentInput, ConsoleInput, ListEntry);
*InputRecord = Input->InputEvent;
if (!Unicode)
{
ConioInputEventToAnsi(InputBuffer->Header.Console, InputRecord);
}
++InputRecord;
++i;
CurrentInput = CurrentInput->Flink;
/* Remove the events from the queue if needed */
if (!KeepEvents)
{
RemoveEntryList(&Input->ListEntry);
ConsoleFreeHeap(Input);
}
}
if (NumEventsRead) *NumEventsRead = i;
if (IsListEmpty(&InputBuffer->InputEvents))
{
ResetEvent(InputBuffer->ActiveEvent);
}
/* We read all the inputs available, we return success */
return STATUS_SUCCESS;
}
static NTSTATUS
ReadInputBuffer(IN PGET_INPUT_INFO InputInfo,
IN PCSR_API_MESSAGE ApiMessage,
IN BOOLEAN CreateWaitBlock OPTIONAL)
{
NTSTATUS Status;
PCONSOLE_GETINPUT GetInputRequest = &((PCONSOLE_API_MESSAGE)ApiMessage)->Data.GetInputRequest;
PCONSOLE_INPUT_BUFFER InputBuffer = InputInfo->InputBuffer;
ULONG NumEventsRead;
PINPUT_RECORD InputRecord;
/*
* For optimization purposes, Windows (and hence ReactOS, too, for
* compatibility reasons) uses a static buffer if no more than five
* input records are read. Otherwise a new buffer is used.
* The client-side expects that we know this behaviour.
*/
if (GetInputRequest->NumRecords <= sizeof(GetInputRequest->RecordStaticBuffer)/sizeof(INPUT_RECORD))
{
/*
* Adjust the internal pointer, because its old value points to
* the static buffer in the original ApiMessage structure.
*/
// GetInputRequest->RecordBufPtr = GetInputRequest->RecordStaticBuffer;
InputRecord = GetInputRequest->RecordStaticBuffer;
}
else
{
InputRecord = GetInputRequest->RecordBufPtr;
}
NumEventsRead = 0;
Status = ConDrvGetConsoleInput(InputBuffer->Header.Console,
InputBuffer,
(GetInputRequest->Flags & CONSOLE_READ_KEEPEVENT) != 0,
(GetInputRequest->Flags & CONSOLE_READ_CONTINUE ) == 0,
InputRecord,
GetInputRequest->NumRecords,
&NumEventsRead);
if (Status == STATUS_PENDING)
{
/* We haven't completed a read, so start a wait */
return WaitBeforeReading(InputInfo,
ApiMessage,
ReadInputBufferThread,
CreateWaitBlock);
}
else
{
/*
* We read all what we wanted. Set the number of events read and
* return the error code we were given.
*/
GetInputRequest->NumRecords = NumEventsRead;
if (NT_SUCCESS(Status))
{
/* Now translate everything to ANSI */
if (!GetInputRequest->Unicode)
{
for (; NumEventsRead > 0; --NumEventsRead)
{
ConioInputEventToAnsi(InputBuffer->Header.Console, --InputRecord);
}
}
}
return Status;
// return STATUS_SUCCESS;
}
}