mirror of
https://github.com/AppleWin/AppleWin.git
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276 lines
9.0 KiB
C++
276 lines
9.0 KiB
C++
#pragma once
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#include "zip.h"
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#define GZ_SUFFIX ".gz"
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#define GZ_SUFFIX_LEN (sizeof(GZ_SUFFIX)-1)
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#define ZIP_SUFFIX ".zip"
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#define ZIP_SUFFIX_LEN (sizeof(ZIP_SUFFIX)-1)
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enum eImageType {eImageUNKNOWN, eImageDO, eImagePO, eImageNIB1, eImageNIB2, eImageHDV, eImageIIE, eImageAPL, eImagePRG};
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enum eDetectResult {eMismatch, ePossibleMatch, eMatch};
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class CImageBase;
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class CImageHelperBase;
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enum FileType_e {eFileNormal, eFileGZip, eFileZip};
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struct ImageInfo
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{
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TCHAR szFilename[MAX_PATH];
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CImageBase* pImageType;
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CImageHelperBase* pImageHelper;
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FileType_e FileType;
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HANDLE hFile;
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DWORD uOffset;
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bool bWriteProtected;
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UINT uImageSize;
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char szFilenameInZip[MAX_PATH];
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zip_fileinfo zipFileInfo;
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UINT uNumEntriesInZip;
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// Floppy only
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BYTE ValidTrack[TRACKS_MAX];
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UINT uNumTracks;
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BYTE* pImageBuffer;
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};
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//-------------------------------------
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#define HD_BLOCK_SIZE 512
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#define UNIDISK35_800K_SIZE (800*1024) // UniDisk 3.5"
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#define HARDDISK_32M_SIZE (HD_BLOCK_SIZE * 65536)
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#define DEFAULT_VOLUME_NUMBER 254
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class CImageBase
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{
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public:
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CImageBase(void) : m_uNumTracksInImage(0), m_uVolumeNumber(DEFAULT_VOLUME_NUMBER) {}
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virtual ~CImageBase(void) {}
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virtual bool Boot(ImageInfo* pImageInfo) { return false; }
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virtual eDetectResult Detect(const LPBYTE pImage, const DWORD dwImageSize, const TCHAR* pszExt) = 0;
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virtual void Read(ImageInfo* pImageInfo, int nTrack, int nQuarterTrack, LPBYTE pTrackImageBuffer, int* pNibbles) { }
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virtual bool Read(ImageInfo* pImageInfo, UINT nBlock, LPBYTE pBlockBuffer) { return false; }
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virtual void Write(ImageInfo* pImageInfo, int nTrack, int nQuarterTrack, LPBYTE pTrackImage, int nNibbles) { }
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virtual bool Write(ImageInfo* pImageInfo, UINT nBlock, LPBYTE pBlockBuffer) { return false; }
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virtual bool AllowBoot(void) { return false; } // Only: APL and PRG
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virtual bool AllowRW(void) { return true; } // All but: APL and PRG
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virtual bool AllowCreate(void) { return false; } // WE CREATE ONLY DOS ORDER (DO) OR 6656-NIBBLE (NIB) FORMAT FILES
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virtual UINT GetImageSizeForCreate(void) { _ASSERT(0); return (UINT)-1; }
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virtual eImageType GetType(void) = 0;
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virtual char* GetCreateExtensions(void) = 0;
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virtual char* GetRejectExtensions(void) = 0;
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void SetVolumeNumber(const BYTE uVolumeNumber) { m_uVolumeNumber = uVolumeNumber; }
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bool IsValidImageSize(const DWORD uImageSize);
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enum SectorOrder_e {eProDOSOrder, eDOSOrder, eSIMSYSTEMOrder, NUM_SECTOR_ORDERS};
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protected:
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bool ReadTrack(ImageInfo* pImageInfo, const int nTrack, LPBYTE pTrackBuffer, const UINT uTrackSize);
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bool WriteTrack(ImageInfo* pImageInfo, const int nTrack, LPBYTE pTrackBuffer, const UINT uTrackSize);
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bool ReadBlock(ImageInfo* pImageInfo, const int nBlock, LPBYTE pBlockBuffer);
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bool WriteBlock(ImageInfo* pImageInfo, const int nBlock, LPBYTE pBlockBuffer);
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LPBYTE Code62(int sector);
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void Decode62(LPBYTE imageptr);
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void DenibblizeTrack (LPBYTE trackimage, SectorOrder_e SectorOrder, int nibbles);
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DWORD NibblizeTrack (LPBYTE trackimagebuffer, SectorOrder_e SectorOrder, int track);
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void SkewTrack (const int nTrack, const int nNumNibbles, const LPBYTE pTrackImageBuffer);
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public:
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static LPBYTE ms_pWorkBuffer;
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UINT m_uNumTracksInImage; // Init'd by CDiskImageHelper.Detect()/GetImageForCreation() & possibly updated by IsValidImageSize()
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protected:
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static BYTE ms_DiskByte[0x40];
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static BYTE ms_SectorNumber[NUM_SECTOR_ORDERS][0x10];
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BYTE m_uVolumeNumber;
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};
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//-------------------------------------
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class CHdrHelper
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{
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public:
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virtual eDetectResult DetectHdr(LPBYTE& pImage, DWORD& dwImageSize, DWORD& dwOffset) = 0;
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virtual UINT GetMaxHdrSize(void) = 0;
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protected:
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CHdrHelper(void) {}
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virtual ~CHdrHelper(void) {}
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};
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class CMacBinaryHelper : public CHdrHelper
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{
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public:
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CMacBinaryHelper(void) {}
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virtual ~CMacBinaryHelper(void) {}
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virtual eDetectResult DetectHdr(LPBYTE& pImage, DWORD& dwImageSize, DWORD& dwOffset);
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virtual UINT GetMaxHdrSize(void) { return uMacBinHdrSize; }
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private:
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static const UINT uMacBinHdrSize = 128;
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};
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// http://apple2.org.za/gswv/a2zine/Docs/DiskImage_2MG_Info.txt
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#pragma pack(push)
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#pragma pack(1) // Ensure Header2IMG is packed
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class C2IMGHelper : public CHdrHelper
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{
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public:
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C2IMGHelper(const bool bIsFloppy) : m_bIsFloppy(bIsFloppy) {}
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virtual ~C2IMGHelper(void) {}
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virtual eDetectResult DetectHdr(LPBYTE& pImage, DWORD& dwImageSize, DWORD& dwOffset);
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virtual UINT GetMaxHdrSize(void) { return sizeof(Header2IMG); }
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BYTE GetVolumeNumber(void);
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bool IsLocked(void);
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bool IsImageFormatDOS33(void) { return m_Hdr.ImageFormat == e2IMGFormatDOS33; }
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bool IsImageFormatProDOS(void) { return m_Hdr.ImageFormat == e2IMGFormatProDOS; }
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private:
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static const UINT32 FormatID_2IMG = 'GMI2'; // '2IMG'
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static const UINT32 Creator_2IMG_AppleWin = '1vWA'; // 'AWv1'
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static const USHORT Version_2IMG_AppleWin = 1;
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enum ImageFormat2IMG_e { e2IMGFormatDOS33=0, e2IMGFormatProDOS, e2IMGFormatNIBData };
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struct Flags2IMG
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{
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UINT32 VolumeNumber : 8; // bits7-0
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UINT32 bDOS33VolumeNumberValid : 1;
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UINT32 Pad : 22;
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UINT32 bDiskImageLocked : 1; // bit31
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};
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struct Header2IMG
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{
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UINT32 FormatID; // "2IMG"
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UINT32 CreatorID;
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USHORT HeaderSize;
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USHORT Version;
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union
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{
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ImageFormat2IMG_e ImageFormat;
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UINT32 ImageFormatRaw;
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};
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union
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{
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Flags2IMG Flags;
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UINT32 FlagsRaw;
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};
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UINT32 NumBlocks; // The number of 512-byte blocks in the disk image
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UINT32 DiskDataOffset;
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UINT32 DiskDataLength;
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UINT32 CommentOffset; // Optional
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UINT32 CommentLength; // Optional
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UINT32 CreatorOffset; // Optional
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UINT32 CreatorLength; // Optional
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BYTE Padding[16];
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};
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Header2IMG m_Hdr;
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bool m_bIsFloppy;
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};
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#pragma pack(pop)
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//-------------------------------------
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class CImageHelperBase
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{
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public:
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CImageHelperBase(const bool bIsFloppy) :
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m_2IMGHelper(bIsFloppy),
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m_Result2IMG(eMismatch)
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{
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}
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virtual ~CImageHelperBase(void)
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{
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for (UINT i=0; i<m_vecImageTypes.size(); i++)
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delete m_vecImageTypes[i];
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}
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ImageError_e Open(LPCTSTR pszImageFilename, ImageInfo* pImageInfo, const bool bCreateIfNecessary, std::string& strFilenameInZip);
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void Close(ImageInfo* pImageInfo, const bool bDeleteFile);
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virtual CImageBase* Detect(LPBYTE pImage, DWORD dwSize, const TCHAR* pszExt, DWORD& dwOffset, bool* pWriteProtected_) = 0;
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virtual CImageBase* GetImageForCreation(const TCHAR* pszExt, DWORD* pCreateImageSize) = 0;
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virtual UINT GetMaxImageSize(void) = 0;
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virtual UINT GetMinDetectSize(const UINT uImageSize, bool* pTempDetectBuffer) = 0;
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protected:
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ImageError_e CheckGZipFile(LPCTSTR pszImageFilename, ImageInfo* pImageInfo);
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ImageError_e CheckZipFile(LPCTSTR pszImageFilename, ImageInfo* pImageInfo, std::string& strFilenameInZip);
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ImageError_e CheckNormalFile(LPCTSTR pszImageFilename, ImageInfo* pImageInfo, const bool bCreateIfNecessary);
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UINT GetNumImages(void) { return m_vecImageTypes.size(); };
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CImageBase* GetImage(UINT uIndex) { _ASSERT(uIndex<GetNumImages()); return m_vecImageTypes[uIndex]; }
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CImageBase* GetImage(eImageType Type)
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{
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if (Type == eImageUNKNOWN)
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return NULL;
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for (UINT i=0; i<GetNumImages(); i++)
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{
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if (m_vecImageTypes[i]->GetType() == Type)
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return m_vecImageTypes[i];
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}
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_ASSERT(0);
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return NULL;
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}
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protected:
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typedef std::vector<CImageBase*> VECIMAGETYPE;
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VECIMAGETYPE m_vecImageTypes;
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C2IMGHelper m_2IMGHelper;
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eDetectResult m_Result2IMG;
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};
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//-------------------------------------
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class CDiskImageHelper : public CImageHelperBase
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{
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public:
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CDiskImageHelper(void);
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virtual ~CDiskImageHelper(void) {}
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virtual CImageBase* Detect(LPBYTE pImage, DWORD dwSize, const TCHAR* pszExt, DWORD& dwOffset, bool* pWriteProtected_);
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virtual CImageBase* GetImageForCreation(const TCHAR* pszExt, DWORD* pCreateImageSize);
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virtual UINT GetMaxImageSize(void);
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virtual UINT GetMinDetectSize(const UINT uImageSize, bool* pTempDetectBuffer);
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UINT GetNumTracksInImage(CImageBase* pImageType) { return pImageType->m_uNumTracksInImage; }
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void SetNumTracksInImage(CImageBase* pImageType, UINT uNumTracks) { pImageType->m_uNumTracksInImage = uNumTracks; }
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LPBYTE GetWorkBuffer(void) { return CImageBase::ms_pWorkBuffer; }
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void SetWorkBuffer(LPBYTE pBuffer) { CImageBase::ms_pWorkBuffer = pBuffer; }
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private:
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void SkipMacBinaryHdr(LPBYTE& pImage, DWORD& dwSize, DWORD& dwOffset);
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private:
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CMacBinaryHelper m_MacBinaryHelper;
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};
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//-------------------------------------
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class CHardDiskImageHelper : public CImageHelperBase
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{
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public:
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CHardDiskImageHelper(void);
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virtual ~CHardDiskImageHelper(void) {}
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virtual CImageBase* Detect(LPBYTE pImage, DWORD dwSize, const TCHAR* pszExt, DWORD& dwOffset, bool* pWriteProtected_);
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virtual CImageBase* GetImageForCreation(const TCHAR* pszExt, DWORD* pCreateImageSize);
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virtual UINT GetMaxImageSize(void);
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virtual UINT GetMinDetectSize(const UINT uImageSize, bool* pTempDetectBuffer);
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};
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