mirror of
https://github.com/1dot13/source.git
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Overhaul
6ec2c5da7d
Fix for enemy invasions and reinforcements git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@1192 3b4a5df2-a311-0410-b5c6-a8a6f20db521
260 lines
7.8 KiB
C++
260 lines
7.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2001-2004 by Marko Bozikovic
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// All rights reserved
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Send bug reports, bug fixes, enhancements, requests, flames, etc., and
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// I'll try to keep a version up to date. I can be reached as follows:
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// marko.bozikovic@alterbox.net
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// bozho@kset.org
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// FileStream.cpp - implementation of IStream interface on any file
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// (not strictly COM, I'm faking it here a bit :-)
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//
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#undef CINTERFACE
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#include "builddefines.h"
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//#include "stdafx.h"
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//#include <atlbase.h>
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#include <Windows.h>
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#include <objidl.h>
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#include "FileStream.h"
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//#ifdef _DEBUG
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//#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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//#endif
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/////////////////////////////////////////////////////////////////////////////
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// CreateFileStream - opens/creates a file and returns an IStream interface
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HRESULT CreateFileStream(
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LPCTSTR lpFileName, // file name
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DWORD dwDesiredAccess, // access mode
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DWORD dwShareMode, // share mode
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LPSECURITY_ATTRIBUTES lpSecurityAttributes, // SD
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DWORD dwCreationDisposition, // how to create
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DWORD dwFlagsAndAttributes, // file attributes
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HANDLE hTemplateFile, // handle to template file
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IStream** ppStream // pointer to IStream interface
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)
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{
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HANDLE hFile = ::CreateFile(
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lpFileName,
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dwDesiredAccess,
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dwShareMode,
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lpSecurityAttributes,
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dwCreationDisposition,
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dwFlagsAndAttributes,
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hTemplateFile);
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if (hFile == INVALID_HANDLE_VALUE) {
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// DWORD a = ::GetLastError();
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ppStream = NULL;
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return E_FAIL;
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}
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FileStream* pFileStream = new FileStream(hFile);
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return pFileStream->QueryInterface(IID_IStream, (void**)ppStream);
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// FileStream class
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/////////////////////////////////////////////////////////////////////////////
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// ctor/dtor
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FileStream::FileStream(HANDLE hFile)
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: m_lRefCount(0)
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, m_hFile(hFile)
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{
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}
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FileStream::~FileStream()
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{
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if (m_hFile) ::CloseHandle(m_hFile);
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// IStream methods
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/////////////////////////////////////////////////////////////////////////////
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// Read - reads a specified number of bytes from the stream object into memory
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// starting at the current seek pointer
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STDMETHODIMP FileStream::Read(void *pv, ULONG cb, ULONG *pcbRead)
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{
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if (!::ReadFile(m_hFile, pv, cb, pcbRead, NULL)) return S_FALSE;
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Write - writes a specified number of bytes into the stream object starting
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// at the current seek pointer
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STDMETHODIMP FileStream::Write(void const *pv, ULONG cb, ULONG *pcbWritten)
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{
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if (!::WriteFile(m_hFile, pv, cb, pcbWritten, NULL)) return S_FALSE;
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Seek - changes the seek pointer to a new location relative to the beginning
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// of the stream, to the end of the stream, or to the current seek pointer
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STDMETHODIMP FileStream::Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition)
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{
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DWORD dwFileOrigin;
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DWORD dwMoveLow = dlibMove.LowPart;
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LONG lMoveHigh = dlibMove.HighPart;
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switch (dwOrigin) {
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case STREAM_SEEK_SET : dwFileOrigin = FILE_BEGIN; break;
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case STREAM_SEEK_CUR : dwFileOrigin = FILE_CURRENT; break;
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case STREAM_SEEK_END : dwFileOrigin = FILE_END; break;
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default:dwFileOrigin = FILE_BEGIN;
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}
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DWORD dwRet = ::SetFilePointer(m_hFile, dwMoveLow, &lMoveHigh, dwFileOrigin);
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if (::GetLastError() != NO_ERROR) return STG_E_INVALIDPOINTER;
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plibNewPosition->LowPart = dwRet;
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plibNewPosition->HighPart = lMoveHigh;
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// SetSize - not really doing anything here
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STDMETHODIMP FileStream::SetSize(ULARGE_INTEGER libNewSize)
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{
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// CopyTo - copies a specified number of bytes from the current seek pointer
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// in the stream to the current seek pointer in another stream
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STDMETHODIMP FileStream::CopyTo(IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbRead, ULARGE_INTEGER *pcbWritten)
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{
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// later...
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return E_NOTIMPL;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Commit - no work here...
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STDMETHODIMP FileStream::Commit(DWORD grfCommitFlags)
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{
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Revert - no work here...
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STDMETHODIMP FileStream::Revert(void)
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{
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// LockRegion - no work here...
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STDMETHODIMP FileStream::LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
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{
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return E_NOTIMPL;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// UnlockRegion - no work here...
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STDMETHODIMP FileStream::UnlockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
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{
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return E_NOTIMPL;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Stat - no work here...
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STDMETHODIMP FileStream::Stat(STATSTG *pstatstg, DWORD grfStatFlag)
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{
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return E_NOTIMPL;
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}
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Clone - no work here...
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STDMETHODIMP FileStream::Clone(IStream **ppstm)
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{
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return E_NOTIMPL;
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}
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/////////////////////////////////////////////////////////////////////////////
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