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{$MACRO ON}
(***********************************************************************
*
* Copyright (c) 1999-2000 Palm, Inc. or its subsidiaries.
* All rights reserved.
*
* File: UDAMgr.h
*
* Release: Palm OS SDK 4.0 (63220)
*
* Description:
* Unified Data Manager header file
* Define type and generic macro to access data
*
* History:
* Jun 08, 2000 Created by Alain BASTY
*
************************************************************************)
unit udamgr;
interface
uses palmos, coretraps, errorbase, exgmgr;
(***********************************************************************
* Generic options flags
************************************************************************)
const
kUDAEndOfReader = 1;
kUDAMoreData = 2;
(***********************************************************************
* Generic control
************************************************************************)
const
kUDAReinitialize = 1;
(***********************************************************************
* Generic error codes
************************************************************************)
const
udaErrControl = udaErrorClass or 1;
(***********************************************************************
* General types
************************************************************************)
type
UDABufferSize = UInt16;
const
kUDAZeroTerminatedBuffer = $FFFF;
(***********************************************************************
* Types of callback functions
************************************************************************)
type
UDAObjectPtr = ^UDAObjectType;
UDAReaderPtr = ^UDAReaderType;
UDAWriterPtr = ^UDAWriterType;
UDADeleteFunction = procedure (var ioObject: UDAObjectPtr);
//!!! UDAControlFunction = function (ioObject: UDAObjectPtr; parameter: UInt16; args: va_list): Err;
UDAReadFunction = function (ioReader: UDAReaderPtr; var buffer: UInt8; bufferSize: UDABufferSize; var error: Err): UDABufferSize;
UDAWriteFunction = function (ioWriter: UDAWriterPtr): Err;
UDAFlushFunction = function (ioWriter: UDAWriterPtr): Err;
UDAObjectType = record
optionFlags: UInt16;
deleteF: UDADeleteFunction;
controlF: Pointer; //!!!UDAControlFunction;
end;
UDAObjectTag = UDAObjectType;
UDAReaderType = record
// The Reader is a base object
optionFlags: UInt16 ;
deleteF: UDADeleteFunction;
controlF: Pointer; //!!!UDAControlFunction;
// Specific Reader fields
readF: UDAReadFunction;
end;
UDAReaderTag = UDAReaderType;
UDAFilterType = record
// The Filter is a base Object
optionFlags: UInt16;
deleteF: UDADeleteFunction;
controlF: Pointer; //!!!UDAControlFunction;
// The Filter is a Reader
readF: UDAReadFunction;
// Specific Filter fields
upperReader: ^UDAReaderType;
end;
UDAFilterTag = UDAFilterType;
UDAWriterType = record
// The Writer is a base Object
optionFlags: UInt16;
deleteF: UDADeleteFunction;
controlF: Pointer; //!!!UDAControlFunction;
// Specific Writer fields
initiateWriteF: UDAWriteFunction;
flushF: UDAFlushFunction;
upperReader: ^UDAReaderType;
end;
UDAWriterTag = UDAWriterType;
(***********************************************************************
* Generic macro to access generic functions
************************************************************************)
(*
#define UDADelete(ioObject) (( *(ioObject->deleteF))((UDAObjectType** )(&(ioObject))))
#define UDARead(ioReader, bufferToFillP, bufferSizeInBytes, error) (( *(ioReader->readF))((UDAReaderType* )(ioReader), (bufferToFillP), (bufferSizeInBytes), (error)))
#define UDAEndOfReader(ioReader) (((ioReader)->optionFlags & kUDAEndOfReader) != 0)
#define UDAMoreData(ioReader) (((ioReader)->optionFlags & kUDAMoreData) != 0)
#define UDAFilterJoin(ioFilter, ioReader) (((UDAFilterType* )(ioFilter))->upperReader = ioReader)
#define UDAWriterJoin(ioWriter, ioReader) (ioWriter->upperReader = ioReader)
#define UDAInitiateWrite(ioWriter) (( *(ioWriter)->initiateWriteF))(ioWriter)
#define UDAWriterFlush(ioWriter) (( *(ioWriter)->flushF))(ioWriter)
*)
(*****************************************************************
* UDA API
****************************************************************)
// Public UDAMgr function selectors
const
sysUdaControl = 0;
sysUdaMemoryReaderNew = 1;
sysUdaExchangeReaderNew = 11;
sysUdaExchangeWriterNew = 12;
// UDAMgr function prototypes
//!!! function UDAControl(var ioObject: UDAObjectType; parameter: UInt16, ...): Err; syscall sysTrapUdaMgrDispatch, sysUdaControl;
function UDAExchangeReaderNew(var socket: ExgSocketType): UDAReaderPtr;
function UDAExchangeWriterNew(var socket: ExgSocketType; bufferSize: UDABufferSize): UDAWriterPtr;
(***********************************************************************
* Memory reader
************************************************************************)
function UDAMemoryReaderNew(var bufferP: UInt8; bufferSizeInBytes: UDABufferSize): UDAReaderPtr;
implementation
function __UDAExchangeReaderNew(var socket: ExgSocketType): UDAReaderPtr; syscall sysTrapUdaMgrDispatch;
function __UDAExchangeWriterNew(var socket: ExgSocketType; bufferSize: UDABufferSize): UDAWriterPtr; syscall sysTrapUdaMgrDispatch;
function __UDAMemoryReaderNew(var bufferP: UInt8; bufferSizeInBytes: UDABufferSize): UDAReaderPtr; syscall sysTrapUdaMgrDispatch;
function UDAExchangeReaderNew(var socket: ExgSocketType): UDAReaderPtr;
begin
asm
move.l #$sysUdaExchangeReaderNew, D2;
end;
UDAExchangeReaderNew := __UDAExchangeReaderNew(socket);
end;
function UDAExchangeWriterNew(var socket: ExgSocketType; bufferSize: UDABufferSize): UDAWriterPtr;
begin
asm
move.l #$sysUdaExchangeWriterNew, D2;
end;
UDAExchangeWriterNew := __UDAExchangeWriterNew(socket, bufferSize);
end;
function UDAMemoryReaderNew(var bufferP: UInt8; bufferSizeInBytes: UDABufferSize): UDAReaderPtr;
begin
asm
move.l #$sysUdaMemoryReaderNew, D2;
end;
UDAMemoryReaderNew := __UDAMemoryReaderNew(bufferP, bufferSizeInBytes);
end;
end.
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