HLLib/HLLib/ProcStream.cpp

258 lines
4.5 KiB
C++

/*
* HLLib
* Copyright (C) 2006-2010 Ryan Gregg
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*/
#include "HLLib.h"
#include "ProcStream.h"
using namespace HLLib;
using namespace HLLib::Streams;
CProcStream::CProcStream(hlVoid *pUserData) : bOpened(hlFalse), uiMode(HL_MODE_INVALID), pUserData(pUserData)
{
}
CProcStream::~CProcStream()
{
this->Close();
}
HLStreamType CProcStream::GetType() const
{
return HL_STREAM_PROC;
}
const hlChar *CProcStream::GetFileName() const
{
return "";
}
hlBool CProcStream::GetOpened() const
{
return this->bOpened;
}
hlUInt CProcStream::GetMode() const
{
return this->uiMode;
}
hlBool CProcStream::Open(hlUInt uiMode)
{
this->Close();
if(pOpenProc == 0)
{
LastError.SetErrorMessage("pOpenProc not set.");
return hlFalse;
}
if(!pOpenProc(uiMode, this->pUserData))
{
LastError.SetErrorMessage("pOpenProc() failed.");
return hlFalse;
}
this->bOpened = hlTrue;
this->uiMode = uiMode;
return hlTrue;
}
hlVoid CProcStream::Close()
{
if(this->bOpened)
{
if(pCloseProc != 0)
{
pCloseProc(this->pUserData);
}
this->bOpened = hlFalse;
this->uiMode = HL_MODE_INVALID;
}
}
hlULongLong CProcStream::GetStreamSize() const
{
if(!this->bOpened)
{
return 0;
}
if(pSizeExProc != 0)
{
return pSizeExProc(this->pUserData);
}
else if(pSizeProc != 0)
{
return static_cast<hlULongLong>(pSizeProc(this->pUserData));
}
LastError.SetErrorMessage("pSizeProc not set.");
return 0;
}
hlULongLong CProcStream::GetStreamPointer() const
{
if(!this->bOpened)
{
return 0;
}
if(pTellExProc != 0)
{
return pTellExProc(this->pUserData);
}
else if(pTellProc != 0)
{
return static_cast<hlULongLong>(pTellProc(this->pUserData));
}
LastError.SetErrorMessage("pTellProc not set.");
return 0;
}
hlULongLong CProcStream::Seek(hlLongLong iOffset, HLSeekMode eSeekMode)
{
if(!this->bOpened)
{
return 0;
}
if(pSeekExProc != 0)
{
return pSeekExProc(iOffset, eSeekMode, this->pUserData);
}
else if(pSeekProc != 0)
{
return static_cast<hlULongLong>(pSeekProc(iOffset, eSeekMode, this->pUserData));
}
LastError.SetErrorMessage("pSeekProc not set.");
return 0;
}
hlBool CProcStream::Read(hlChar &cChar)
{
if(!this->bOpened)
{
return hlFalse;
}
if((this->uiMode & HL_MODE_READ) == 0)
{
LastError.SetErrorMessage("Stream not in read mode.");
return hlFalse;
}
if(pReadProc == 0)
{
LastError.SetErrorMessage("pReadProc not set.");
return hlFalse;
}
hlUInt uiBytesRead = pReadProc(&cChar, 1, this->pUserData);
if(uiBytesRead == 0)
{
LastError.SetErrorMessage("pReadProc() failed.");
}
return uiBytesRead == 1;
}
hlUInt CProcStream::Read(hlVoid *lpData, hlUInt uiBytes)
{
if(!this->bOpened)
{
return 0;
}
if((this->uiMode & HL_MODE_READ) == 0)
{
LastError.SetErrorMessage("Stream not in read mode.");
return 0;
}
if(pReadProc == 0)
{
LastError.SetErrorMessage("pReadProc not set.");
return 0;
}
hlUInt uiBytesRead = pReadProc(lpData, uiBytes, this->pUserData);
if(uiBytesRead == 0)
{
LastError.SetErrorMessage("pReadProc() failed.");
}
return uiBytesRead;
}
hlBool CProcStream::Write(hlChar cChar)
{
if(!this->bOpened)
{
return hlFalse;
}
if((this->uiMode & HL_MODE_WRITE) == 0)
{
LastError.SetErrorMessage("Stream not in write mode.");
return hlFalse;
}
if(pWriteProc == 0)
{
LastError.SetErrorMessage("pWriteProc not set.");
return hlFalse;
}
hlUInt uiBytesWritten = pWriteProc(&cChar, 1, this->pUserData);
if(uiBytesWritten == 0)
{
LastError.SetErrorMessage("pWriteProc() failed.");
}
return uiBytesWritten == 1;
}
hlUInt CProcStream::Write(const hlVoid *lpData, hlUInt uiBytes)
{
if(!this->bOpened)
{
return 0;
}
if((this->uiMode & HL_MODE_WRITE) == 0)
{
LastError.SetErrorMessage("Stream not in write mode.");
return 0;
}
if(pWriteProc == 0)
{
LastError.SetErrorMessage("pWriteProc not set.");
return 0;
}
hlUInt uiBytesWritten = pWriteProc(lpData, uiBytes, this->pUserData);
if(uiBytesWritten == 0)
{
LastError.SetErrorMessage("pWriteProc() failed.");
}
return uiBytesWritten;
}