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Copy pathDiskImage.cpp
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Copy pathDiskImage.cpp
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291 lines (229 loc) · 7.79 KB
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/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006-2010, Tom Charlesworth, Michael Pohoreski
AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Disk Image
*
* Author: Various
*/
#include "StdAfx.h"
#include "DiskImage.h"
#include "DiskImageHelper.h"
static CDiskImageHelper sg_DiskImageHelper;
static CHardDiskImageHelper sg_HardDiskImageHelper;
//===========================================================================
// Pre: *pWriteProtected_ already set to file's r/w status - see DiskInsert()
ImageError_e ImageOpen( LPCTSTR pszImageFilename,
ImageInfo** ppImageInfo,
bool* pWriteProtected,
const bool bCreateIfNecessary,
std::string& strFilenameInZip,
const bool bExpectFloppy /*=true*/)
{
if (bExpectFloppy && sg_DiskImageHelper.GetWorkBuffer() == NULL)
return eIMAGE_ERROR_BAD_POINTER;
if (! (pszImageFilename && ppImageInfo && pWriteProtected))
return eIMAGE_ERROR_BAD_POINTER;
// CREATE A RECORD FOR THE FILE
*ppImageInfo = (ImageInfo*) VirtualAlloc(NULL, sizeof(ImageInfo), MEM_COMMIT, PAGE_READWRITE);
if (*ppImageInfo == NULL)
return eIMAGE_ERROR_BAD_POINTER;
ZeroMemory(*ppImageInfo, sizeof(ImageInfo));
ImageInfo* pImageInfo = *ppImageInfo;
pImageInfo->bWriteProtected = *pWriteProtected;
if (bExpectFloppy) pImageInfo->pImageHelper = &sg_DiskImageHelper;
else pImageInfo->pImageHelper = &sg_HardDiskImageHelper;
ImageError_e Err = pImageInfo->pImageHelper->Open(pszImageFilename, pImageInfo, bCreateIfNecessary, strFilenameInZip);
if (Err != eIMAGE_ERROR_NONE)
{
ImageClose(*ppImageInfo, true);
*ppImageInfo = NULL;
return Err;
}
if (pImageInfo->pImageType && pImageInfo->pImageType->GetType() == eImageHDV)
{
if (bExpectFloppy)
Err = eIMAGE_ERROR_UNSUPPORTED_HDV;
return Err;
}
// THE FILE MATCHES A KNOWN FORMAT
_ASSERT(bExpectFloppy);
if (!bExpectFloppy)
return eIMAGE_ERROR_UNSUPPORTED;
pImageInfo->uNumTracks = sg_DiskImageHelper.GetNumTracksInImage(pImageInfo->pImageType);
for (UINT uTrack = 0; uTrack < pImageInfo->uNumTracks; uTrack++)
pImageInfo->ValidTrack[uTrack] = (pImageInfo->uImageSize > 0) ? 1 : 0;
*pWriteProtected = pImageInfo->bWriteProtected;
return eIMAGE_ERROR_NONE;
}
//===========================================================================
void ImageClose(ImageInfo* const pImageInfo, const bool bOpenError /*=false*/)
{
bool bDeleteFile = false;
if (!bOpenError)
{
for (UINT uTrack = 0; uTrack < pImageInfo->uNumTracks; uTrack++)
{
if (!pImageInfo->ValidTrack[uTrack])
{
// TODO: Comment using info from this URL:
// http://groups.google.de/group/comp.emulators.apple2/msg/7a1b9317e7905152
bDeleteFile = true;
break;
}
}
}
pImageInfo->pImageHelper->Close(pImageInfo, bDeleteFile);
VirtualFree(pImageInfo, 0, MEM_RELEASE);
}
//===========================================================================
BOOL ImageBoot(ImageInfo* const pImageInfo)
{
BOOL result = 0;
if (pImageInfo->pImageType->AllowBoot())
result = pImageInfo->pImageType->Boot(pImageInfo);
if (result)
pImageInfo->bWriteProtected = 1;
return result;
}
//===========================================================================
void ImageDestroy(void)
{
VirtualFree(sg_DiskImageHelper.GetWorkBuffer(), 0, MEM_RELEASE);
sg_DiskImageHelper.SetWorkBuffer(NULL);
}
//===========================================================================
void ImageInitialize(void)
{
LPBYTE pBuffer = (LPBYTE) VirtualAlloc(NULL, TRACK_DENIBBLIZED_SIZE*2, MEM_COMMIT, PAGE_READWRITE);
sg_DiskImageHelper.SetWorkBuffer(pBuffer);
}
//===========================================================================
void ImageReadTrack( ImageInfo* const pImageInfo,
const int nTrack,
const int nQuarterTrack,
LPBYTE pTrackImageBuffer,
int* pNibbles,
bool enhanceDisk)
{
_ASSERT(nTrack >= 0);
if (nTrack < 0)
return;
if (pImageInfo->pImageType->AllowRW() && pImageInfo->ValidTrack[nTrack])
{
pImageInfo->pImageType->Read(pImageInfo, nTrack, nQuarterTrack, pTrackImageBuffer, pNibbles, enhanceDisk);
}
else
{
for (*pNibbles = 0; *pNibbles < NIBBLES_PER_TRACK; (*pNibbles)++)
pTrackImageBuffer[*pNibbles] = (BYTE)(rand() & 0xFF);
}
}
//===========================================================================
void ImageWriteTrack( ImageInfo* const pImageInfo,
const int nTrack,
const int nQuarterTrack,
LPBYTE pTrackImage,
const int nNibbles)
{
_ASSERT(nTrack >= 0);
if (nTrack < 0)
return;
if (pImageInfo->pImageType->AllowRW() && !pImageInfo->bWriteProtected)
{
pImageInfo->pImageType->Write(pImageInfo, nTrack, nQuarterTrack, pTrackImage, nNibbles);
pImageInfo->ValidTrack[nTrack] = 1;
}
}
//===========================================================================
bool ImageReadBlock( ImageInfo* const pImageInfo,
UINT nBlock,
LPBYTE pBlockBuffer)
{
bool bRes = false;
if (pImageInfo->pImageType->AllowRW())
bRes = pImageInfo->pImageType->Read(pImageInfo, nBlock, pBlockBuffer);
return bRes;
}
//===========================================================================
bool ImageWriteBlock( ImageInfo* const pImageInfo,
UINT nBlock,
LPBYTE pBlockBuffer)
{
bool bRes = false;
if (pImageInfo->pImageType->AllowRW() && !pImageInfo->bWriteProtected)
bRes = pImageInfo->pImageType->Write(pImageInfo, nBlock, pBlockBuffer);
return bRes;
}
//===========================================================================
int ImageGetNumTracks(ImageInfo* const pImageInfo)
{
return pImageInfo ? pImageInfo->uNumTracks : 0;
}
bool ImageIsWriteProtected(ImageInfo* const pImageInfo)
{
return pImageInfo ? pImageInfo->bWriteProtected : true;
}
bool ImageIsMultiFileZip(ImageInfo* const pImageInfo)
{
return pImageInfo ? (pImageInfo->uNumEntriesInZip > 1) : false;
}
const char* ImageGetPathname(ImageInfo* const pImageInfo)
{
static const char* szEmpty = "";
return pImageInfo ? pImageInfo->szFilename : szEmpty;
}
UINT ImageGetImageSize(ImageInfo* const pImageInfo)
{
return pImageInfo ? pImageInfo->uImageSize : 0;
}
void GetImageTitle(LPCTSTR pPathname, TCHAR* pImageName, TCHAR* pFullName)
{
TCHAR imagetitle[ MAX_DISK_FULL_NAME+1 ];
LPCTSTR startpos = pPathname;
// imagetitle = <FILENAME.EXT>
if (_tcsrchr(startpos, TEXT('\\')))
startpos = _tcsrchr(startpos, TEXT('\\'))+1;
_tcsncpy(imagetitle, startpos, MAX_DISK_FULL_NAME);
imagetitle[MAX_DISK_FULL_NAME] = 0;
// if imagetitle contains a lowercase char, then found=1 (why?)
BOOL found = 0;
int loop = 0;
while (imagetitle[loop] && !found)
{
if (IsCharLower(imagetitle[loop]))
found = 1;
else
loop++;
}
if ((!found) && (loop > 2))
CharLowerBuff(imagetitle+1, _tcslen(imagetitle+1));
// pFullName = <FILENAME.EXT>
_tcsncpy( pFullName, imagetitle, MAX_DISK_FULL_NAME );
pFullName[ MAX_DISK_FULL_NAME ] = 0;
if (imagetitle[0])
{
LPTSTR dot = imagetitle;
if (_tcsrchr(dot, TEXT('.')))
dot = _tcsrchr(dot, TEXT('.'));
if (dot > imagetitle)
*dot = 0;
}
// pImageName = <FILENAME> (ie. no extension)
_tcsncpy( pImageName, imagetitle, MAX_DISK_IMAGE_NAME );
pImageName[ MAX_DISK_IMAGE_NAME ] = 0;
}