mirror of
https://github.com/fadden/ciderpress.git
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Adding read capability for Gutenberg word processor formatted disks
This commit is contained in:
David Schmidt
parent
aa89adb2d9
commit
abd3515424
@ -1,5 +1,6 @@
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/*
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* CiderPress
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* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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@ -1158,6 +1159,7 @@ DiskArchive::LoadDiskFSContents(DiskFS* pDiskFS, const char* volName)
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case DiskImg::kFormatDOS33:
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case DiskImg::kFormatDOS32:
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case DiskImg::kFormatUNIDOS:
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case DiskImg::kFormatGutenberg:
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pNewEntry->SetFormatStr("DOS");
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break;
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case DiskImg::kFormatProDOS:
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@ -1,5 +1,6 @@
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/*
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* CiderPress
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* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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@ -1404,6 +1405,10 @@ DiskImg::AnalyzeImageFS(void)
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{
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assert(fFormat == kFormatMacHFS);
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WMSG1(" DI found HFS, order=%d\n", fOrder);
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} else if (DiskFSGutenberg::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
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{
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assert(fFormat == kFormatGutenberg);
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WMSG1(" DI found Gutenberg, order=%d\n", fOrder);
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} else {
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fFormat = kFormatUnknown;
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WMSG1(" DI no recognizeable filesystem found (fOrder=%d)\n",
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@ -1578,6 +1583,7 @@ DiskImg::CalcFSSectorOrder(void) const
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case kFormatDOS32:
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case kFormatUNIDOS:
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case kFormatOzDOS:
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case kFormatGutenberg:
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return kSectorOrderDOS;
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case kFormatGenericCPMOrd:
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@ -1633,6 +1639,7 @@ DiskImg::ShowAsBlocks(void) const
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case kFormatRDOS33:
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case kFormatUNIDOS:
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case kFormatOzDOS:
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case kFormatGutenberg:
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return false;
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case kFormatGenericProDOSOrd:
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@ -3158,6 +3165,9 @@ DiskImg::OpenAppropriateDiskFS(bool allowUnknown)
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case DiskImg::kFormatRDOS3:
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pDiskFS = new DiskFSRDOS();
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break;
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case DiskImg::kFormatGutenberg:
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pDiskFS = new DiskFSGutenberg();
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break;
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default:
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WMSG1("WARNING: unhandled DiskFS case %d\n", GetFSFormat());
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@ -1,5 +1,6 @@
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/*
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* CiderPress
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* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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@ -344,6 +345,7 @@ public:
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kFormatMacPart = 44, // Macintosh-style partitioned disk
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kFormatMicroDrive = 45, // ///SHH Systeme's MicroDrive format
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kFormatFocusDrive = 46, // Parsons Engineering FocusDrive format
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kFormatGutenberg = 47, // Gutenberg word processor format
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// try to keep this in an unsigned char, e.g. for CP clipboard
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} FSFormat;
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@ -573,6 +575,7 @@ public:
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static bool UsesDOSFileStructure(FSFormat format) {
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return (format == kFormatDOS33 ||
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format == kFormatDOS32 ||
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format == kFormatGutenberg ||
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format == kFormatUNIDOS ||
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format == kFormatOzDOS ||
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format == kFormatRDOS33 ||
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@ -1,5 +1,6 @@
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/*
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* CiderPress
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* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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@ -2806,6 +2807,258 @@ private:
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};
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/*
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* ===========================================================================
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* Gutenberg
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* ===========================================================================
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*/
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class A2FileGutenberg;
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/*
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* Gutenberg disk.
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*/
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class DISKIMG_API DiskFSGutenberg : public DiskFS {
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public:
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DiskFSGutenberg(void) : DiskFS() {
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fVTOCLoaded = false;
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fDiskIsGood = false;
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}
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virtual ~DiskFSGutenberg(void) {}
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static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
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DiskImg::FSFormat* pFormat, FSLeniency leniency);
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virtual DIError Initialize(DiskImg* pImg, InitMode initMode) {
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SetDiskImg(pImg);
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return Initialize(initMode);
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}
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virtual const char* GetVolumeName(void) const { return fDiskVolumeName; }
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virtual const char* GetVolumeID(void) const { return fDiskVolumeID; }
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virtual const char* GetBareVolumeName(void) const {
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return fDiskVolumeName;
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}
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virtual bool GetReadWriteSupported(void) const { return true; }
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virtual bool GetFSDamaged(void) const { return !fDiskIsGood; }
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virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
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int* pUnitSize) const;
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static bool IsValidFileName(const char* name);
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static bool IsValidVolumeName(const char* name);
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// utility function
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static void LowerASCII(unsigned char* buf, long len);
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static void ReplaceFssep(char* str, char replacement);
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enum {
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kMinTracks = 17, // need to put the catalog track here
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kMaxTracks = 50,
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kMaxCatalogSectors = 64, // two tracks on a 32-sector disk
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};
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/* a T/S pair */
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typedef struct TrackSector {
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char track;
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char sector;
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} TrackSector;
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friend class A2FDGutenberg; // for Write
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private:
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DIError Initialize(InitMode initMode);
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DIError ReadVTOC(void);
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void UpdateVolumeNum(void);
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void DumpVTOC(void);
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void SetSectorUsage(long track, long sector,
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VolumeUsage::ChunkPurpose purpose);
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void FixVolumeUsageMap(void);
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DIError ReadCatalog(void);
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DIError ProcessCatalogSector(int catTrack, int catSect,
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const unsigned char* sctBuf);
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DIError GetFileLengths(void);
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DIError ComputeLength(A2FileGutenberg* pFile, const TrackSector* tsList,
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int tsCount);
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DIError TrimLastSectorUp(A2FileGutenberg* pFile, TrackSector lastTS);
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void MarkFileUsage(A2FileGutenberg* pFile, TrackSector* tsList, int tsCount,
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TrackSector* indexList, int indexCount);
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DIError MakeFileNameUnique(char* fileName);
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DIError GetFreeCatalogEntry(TrackSector* pCatSect, int* pCatEntry,
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unsigned char* sctBuf, A2FileGutenberg** ppPrevEntry);
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void CreateDirEntry(unsigned char* sctBuf, int catEntry,
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const char* fileName, TrackSector* pTSSect, unsigned char fileType,
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int access);
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void FreeTrackSectors(TrackSector* pList, int count);
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bool CheckDiskIsGood(void);
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DIError WriteDOSTracks(int sectPerTrack);
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DIError ScanVolBitmap(void);
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DIError LoadVolBitmap(void);
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DIError SaveVolBitmap(void);
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void FreeVolBitmap(void);
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DIError AllocSector(TrackSector* pTS);
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DIError CreateEmptyBlockMap(bool withDOS);
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bool GetSectorUseEntry(long track, int sector) const;
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void SetSectorUseEntry(long track, int sector, bool inUse);
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inline unsigned long GetVTOCEntry(const unsigned char* pVTOC,
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long track) const;
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// Largest interesting volume is 400K (50 tracks, 32 sectors), but
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// we may be looking at it in 16-sector mode, so max tracks is 100.
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enum {
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kMaxInterestingTracks = 100,
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kSectorSize = 256,
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kDefaultVolumeNum = 254,
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kMaxExtensionLen = 4, // used when normalizing; ".gif" is 4
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};
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/* some fields from the VTOC */
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int fFirstCatTrack;
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int fFirstCatSector;
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int fVTOCVolumeNumber;
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int fVTOCNumTracks;
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int fVTOCNumSectors;
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/* private data */
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char fDiskVolumeName[10]; //
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char fDiskVolumeID[11+12+1]; // sizeof "Gutenberg: " + 12 + null
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unsigned char fVTOC[kSectorSize];
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bool fVTOCLoaded;
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/*
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* There are some things we need to be careful of when reading the
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* catalog track, like bad links and infinite loops. By storing a list
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* of known good catalog sectors, we only have to handle that stuff once.
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* The catalog doesn't grow or shrink, so this never needs to be updated.
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*/
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TrackSector fCatalogSectors[kMaxCatalogSectors];
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bool fDiskIsGood;
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};
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/*
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* File descriptor for an open Gutenberg file.
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*/
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class DISKIMG_API A2FDGutenberg : public A2FileDescr {
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public:
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A2FDGutenberg(A2File* pFile) : A2FileDescr(pFile) {
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fOffset = 0;
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fModified = false;
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}
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virtual ~A2FDGutenberg(void) {
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}
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friend class A2FileGutenberg;
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virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL);
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virtual DIError Write(const void* buf, size_t len, size_t* pActual = NULL);
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virtual DIError Seek(di_off_t offset, DIWhence whence);
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virtual di_off_t Tell(void);
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virtual DIError Close(void);
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virtual long GetSectorCount(void) const;
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virtual long GetBlockCount(void) const;
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virtual DIError GetStorage(long sectorIdx, long* pTrack, long* pSector) const;
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virtual DIError GetStorage(long blockIdx, long* pBlock) const;
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private:
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typedef DiskFSGutenberg::TrackSector TrackSector;
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int fTSCount;
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di_off_t fOffset; // current position in file
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di_off_t fOpenEOF; // how big the file currently is
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long fOpenSectorsUsed; // how many sectors it occupies
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bool fModified; // if modified, update stuff on Close
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void DumpTSList(void) const;
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};
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/*
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* Holds Gutenberg files.
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*
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*/
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class DISKIMG_API A2FileGutenberg : public A2File {
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public:
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A2FileGutenberg(DiskFS* pDiskFS);
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virtual ~A2FileGutenberg(void);
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// assorted constants
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enum {
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kMaxFileName = 12,
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};
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typedef enum {
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kTypeText = 0x00, // 'T'
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} FileType;
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/*
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* Implementations of standard interfaces.
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*/
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virtual const char* GetFileName(void) const { return fFileName; }
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virtual const char* GetPathName(void) const { return fFileName; }
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virtual char GetFssep(void) const { return '\0'; }
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virtual long GetFileType(void) const;
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virtual long GetAuxType(void) const { return fAuxType; }
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virtual long GetAccess(void) const { return DiskFS::kFileAccessUnlocked; }
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virtual time_t GetCreateWhen(void) const { return 0; }
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virtual time_t GetModWhen(void) const { return 0; }
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virtual di_off_t GetDataLength(void) const { return fLength; }
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virtual di_off_t GetDataSparseLength(void) const { return fSparseLength; }
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virtual di_off_t GetRsrcLength(void) const { return -1; }
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virtual di_off_t GetRsrcSparseLength(void) const { return -1; }
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virtual DIError Open(A2FileDescr** ppOpenFile, bool readOnly,
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bool rsrcFork = false);
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virtual void CloseDescr(A2FileDescr* pOpenFile) {
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assert(pOpenFile == fpOpenFile);
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delete fpOpenFile;
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fpOpenFile = NULL;
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}
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virtual bool IsFileOpen(void) const { return fpOpenFile != NULL; }
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void Dump(void) const;
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typedef DiskFSGutenberg::TrackSector TrackSector;
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/*
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* Contents of directory entry.
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*
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* We don't hold deleted or unused entries, so fTSListTrack is always
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* valid.
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*/
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short fTrack; // (could use TrackSector here)
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short fSector;
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unsigned short fLengthInSectors;
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bool fLocked;
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char fFileName[kMaxFileName+1]; // "fixed" version
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FileType fFileType;
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TrackSector fCatTS; // track/sector for our catalog entry
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int fCatEntryNum; // entry number within cat sector
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// these are computed or determined from the file contents
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unsigned short fAuxType; // addr for bin, etc.
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short fDataOffset; // for 'A'/'B'/'I' with embedded len
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di_off_t fLength; // file length, in bytes
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di_off_t fSparseLength; // file length, factoring sparse out
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void FixFilename(void);
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static FileType ConvertFileType(long prodosType, di_off_t fileLen);
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static bool IsValidType(long prodosType);
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static void MakeDOSName(char* buf, const char* name);
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static void TrimTrailingSpaces(char* filename);
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private:
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DIError ExtractTSPairs(const unsigned char* sctBuf, TrackSector* tsList,
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int* pLastNonZero);
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A2FDGutenberg* fpOpenFile;
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};
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/*
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* ===========================================================================
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* FAT (including FAT12, FAT16, and FAT32)
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671
diskimg/Gutenberg.cpp
Normal file
671
diskimg/Gutenberg.cpp
Normal file
@ -0,0 +1,671 @@
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/*
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* CiderPress
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* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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/*
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* Implementation of DiskFSGutenberg and A2FileGutenberg classes.
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*
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*/
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#include "StdAfx.h"
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#include "DiskImgPriv.h"
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/*
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* ===========================================================================
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* DiskFSGutenberg
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* ===========================================================================
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*/
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const int kMaxSectors = 32;
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const int kMaxVolNameLen = 9;
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const int kSctSize = 256;
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const int kVTOCTrack = 17;
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const int kVTOCSector = 7;
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const int kCatalogEntryOffset = 0x20; // first entry in cat sect starts here
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const int kCatalogEntrySize = 16; // length in bytes of catalog entries
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const int kCatalogEntriesPerSect = 15; // #of entries per catalog sector
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const int kEntryDeleted = 0x40; // this is used to designate deleted files
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const int kEntryUnused = 0x00; // this is track# in never-used entries
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const int kMaxTSPairs = 0x7a; // 122 entries for 256-byte sectors
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const int kTSOffset = 0x0c; // first T/S entry in a T/S list
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const int kMaxTSIterations = 32;
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/*
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* Get a pointer to the Nth entry in a catalog sector.
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*/
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static inline unsigned char*
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GetCatalogEntryPtr(unsigned char* basePtr, int entryNum)
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{
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assert(entryNum >= 0 && entryNum < kCatalogEntriesPerSect);
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return basePtr + kCatalogEntryOffset + entryNum * kCatalogEntrySize;
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}
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/*
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* Test this image for Gutenberg-ness.
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*
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*/
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static DIError
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TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder, int* pGoodCount)
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{
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DIError dierr = kDIErrNone;
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unsigned char sctBuf[kSctSize];
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// int numTracks, numSectors;
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int catTrack = kVTOCTrack;
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int catSect = kVTOCSector;
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int foundGood = 0;
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int iterations = 0;
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*pGoodCount = 0;
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/*
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* Walk through the catalog track to try to figure out ordering.
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*/
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while (iterations < DiskFSGutenberg::kMaxCatalogSectors)
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{
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dierr = pImg->ReadTrackSectorSwapped(catTrack, catSect, sctBuf,
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imageOrder, DiskImg::kSectorOrderDOS);
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if (dierr != kDIErrNone) {
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dierr = kDIErrNone;
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break; /* allow it if earlier stuff was okay */
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}
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if (catTrack == sctBuf[0] && catSect == sctBuf[1]) {
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foundGood++;
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if (sctBuf[0x0f] == 0x8d && sctBuf[0x1f] == 0x8d &&
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sctBuf[0x2f] == 0x8d && sctBuf[0x3f] == 0x8d &&
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sctBuf[0x4f] == 0x8d && sctBuf[0x5f] == 0x8d &&
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sctBuf[0x6f] == 0x8d && sctBuf[0x7f] == 0x8d &&
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sctBuf[0x8f] == 0x8d && sctBuf[0x9f] == 0x8d)
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foundGood++;
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}
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else if (catTrack >0x80) {
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WMSG2(" Gutenberg detected end-of-catalog on cat (%d,%d)\n",
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catTrack, catSect);
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break;
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}
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catTrack = sctBuf[0x04];
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catSect = sctBuf[0x05];
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iterations++; // watch for infinite loops
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}
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if (iterations >= DiskFSGutenberg::kMaxCatalogSectors) {
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/* possible cause: LF->CR conversion screws up link to sector $0a */
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dierr = kDIErrDirectoryLoop;
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WMSG1(" Gutenberg directory links cause a loop (order=%d)\n", imageOrder);
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goto bail;
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}
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WMSG2(" Gutenberg foundGood=%d order=%d\n", foundGood, imageOrder);
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*pGoodCount = foundGood;
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bail:
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return dierr;
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}
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/*
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* Test to see if the image is a Gutenberg word processor data disk.
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*/
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/*static*/ DIError
|
||||
DiskFSGutenberg::TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
|
||||
DiskImg::FSFormat* pFormat, FSLeniency leniency)
|
||||
{
|
||||
if (pImg->GetNumTracks() > kMaxInterestingTracks)
|
||||
return kDIErrFilesystemNotFound;
|
||||
|
||||
DiskImg::SectorOrder ordering[DiskImg::kSectorOrderMax];
|
||||
|
||||
DiskImg::GetSectorOrderArray(ordering, *pOrder);
|
||||
|
||||
DiskImg::SectorOrder bestOrder = DiskImg::kSectorOrderUnknown;
|
||||
int bestCount = 0;
|
||||
|
||||
for (int i = 0; i < DiskImg::kSectorOrderMax; i++) {
|
||||
int goodCount = 0;
|
||||
|
||||
if (ordering[i] == DiskImg::kSectorOrderUnknown)
|
||||
continue;
|
||||
if (TestImage(pImg, ordering[i], &goodCount) == kDIErrNone) {
|
||||
if (goodCount > bestCount) {
|
||||
bestCount = goodCount;
|
||||
bestOrder = ordering[i];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (bestCount >= 2 ||
|
||||
(leniency == kLeniencyVery && bestCount >= 1))
|
||||
{
|
||||
WMSG2(" Gutenberg test: bestCount=%d for order=%d\n", bestCount, bestOrder);
|
||||
assert(bestOrder != DiskImg::kSectorOrderUnknown);
|
||||
*pOrder = bestOrder;
|
||||
*pFormat = DiskImg::kFormatGutenberg;
|
||||
return kDIErrNone;
|
||||
}
|
||||
|
||||
WMSG0(" Gutenberg didn't find a valid filesystem.\n");
|
||||
return kDIErrFilesystemNotFound;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Get things rolling.
|
||||
*
|
||||
* Since we're assured that this is a valid disk, errors encountered from here
|
||||
* on out must be handled somehow, possibly by claiming that the disk is
|
||||
* completely full and has no files on it.
|
||||
*/
|
||||
DIError
|
||||
DiskFSGutenberg::Initialize(InitMode initMode)
|
||||
{
|
||||
DIError dierr = kDIErrNone;
|
||||
|
||||
fVolumeUsage.Create(fpImg->GetNumTracks(), fpImg->GetNumSectPerTrack());
|
||||
|
||||
/* read the contents of the catalog, creating our A2File list */
|
||||
dierr = ReadCatalog();
|
||||
if (dierr != kDIErrNone)
|
||||
goto bail;
|
||||
|
||||
/* run through and get file lengths and data offsets */
|
||||
dierr = GetFileLengths();
|
||||
if (dierr != kDIErrNone)
|
||||
goto bail;
|
||||
|
||||
sprintf(fDiskVolumeID, "Gutenberg: %s\0", fDiskVolumeName);
|
||||
|
||||
fDiskIsGood = CheckDiskIsGood();
|
||||
|
||||
fVolumeUsage.Dump();
|
||||
|
||||
bail:
|
||||
return dierr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the amount of free space remaining.
|
||||
*/
|
||||
DIError
|
||||
DiskFSGutenberg::GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
|
||||
int* pUnitSize) const
|
||||
{
|
||||
*pTotalUnits = fpImg->GetNumTracks() * fpImg->GetNumSectPerTrack();
|
||||
*pFreeUnits = 0;
|
||||
*pUnitSize = kSectorSize;
|
||||
return kDIErrNone;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Read the disk's catalog.
|
||||
*
|
||||
*/
|
||||
DIError
|
||||
DiskFSGutenberg::ReadCatalog(void)
|
||||
{
|
||||
DIError dierr = kDIErrNone;
|
||||
unsigned char sctBuf[kSctSize];
|
||||
int catTrack, catSect;
|
||||
int iterations;
|
||||
|
||||
catTrack = 17;
|
||||
catSect = 7;
|
||||
iterations = 0;
|
||||
|
||||
memset(fCatalogSectors, 0, sizeof(fCatalogSectors));
|
||||
|
||||
while (catTrack < 35 && catSect < 16 && iterations < kMaxCatalogSectors)
|
||||
{
|
||||
WMSG2(" Gutenberg reading catalog sector T=%d S=%d\n", catTrack, catSect);
|
||||
dierr = fpImg->ReadTrackSector(catTrack, catSect, sctBuf);
|
||||
if (dierr != kDIErrNone)
|
||||
goto bail;
|
||||
sprintf(fDiskVolumeName, (const char *)&sctBuf[6], kMaxVolNameLen);
|
||||
fDiskVolumeName[kMaxVolNameLen] = 0x00;
|
||||
DiskFSGutenberg::LowerASCII((unsigned char*)fDiskVolumeName, kMaxVolNameLen);
|
||||
A2FileGutenberg::TrimTrailingSpaces(fDiskVolumeName);
|
||||
|
||||
dierr = ProcessCatalogSector(catTrack, catSect, sctBuf);
|
||||
if (dierr != kDIErrNone)
|
||||
goto bail;
|
||||
|
||||
fCatalogSectors[iterations].track = catTrack;
|
||||
fCatalogSectors[iterations].sector = catSect;
|
||||
|
||||
catTrack = sctBuf[0x04];
|
||||
catSect = sctBuf[0x05];
|
||||
|
||||
iterations++; // watch for infinite loops
|
||||
|
||||
}
|
||||
if (iterations >= kMaxCatalogSectors) {
|
||||
dierr = kDIErrDirectoryLoop;
|
||||
goto bail;
|
||||
}
|
||||
|
||||
bail:
|
||||
return dierr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Process the list of files in one sector of the catalog.
|
||||
*
|
||||
* Pass in the track, sector, and the contents of that track and sector.
|
||||
* (We only use "catTrack" and "catSect" to fill out some fields.)
|
||||
*/
|
||||
DIError
|
||||
DiskFSGutenberg::ProcessCatalogSector(int catTrack, int catSect,
|
||||
const unsigned char* sctBuf)
|
||||
{
|
||||
A2FileGutenberg* pFile;
|
||||
const unsigned char* pEntry;
|
||||
int i;
|
||||
|
||||
pEntry = &sctBuf[kCatalogEntryOffset];
|
||||
|
||||
for (i = 0; i < kCatalogEntriesPerSect; i++) {
|
||||
if (pEntry[0x0d] != kEntryDeleted && pEntry[0x00] != 0xa0 && pEntry[0x00] != 0x00) {
|
||||
pFile = new A2FileGutenberg(this);
|
||||
|
||||
pFile->SetQuality(A2File::kQualityGood);
|
||||
|
||||
pFile->fTrack = pEntry[0x0c];
|
||||
pFile->fSector = pEntry[0x0d];
|
||||
|
||||
memcpy(pFile->fFileName, &pEntry[0x00], A2FileGutenberg::kMaxFileName);
|
||||
pFile->fFileName[A2FileGutenberg::kMaxFileName] = '\0';
|
||||
pFile->FixFilename();
|
||||
|
||||
|
||||
//pFile->fCatTS.track = catTrack;
|
||||
//pFile->fCatTS.sector = catSect;
|
||||
pFile->fCatEntryNum = i;
|
||||
|
||||
/* can't do these yet, so just set to defaults */
|
||||
pFile->fLength = 0;
|
||||
pFile->fSparseLength = 0;
|
||||
pFile->fDataOffset = 0;
|
||||
pFile->fLengthInSectors = 0;
|
||||
pFile->fLengthInSectors = 0;
|
||||
|
||||
AddFileToList(pFile);
|
||||
}
|
||||
//if (pEntry[0x00] == 0xa0)
|
||||
// break;
|
||||
pEntry += kCatalogEntrySize;
|
||||
}
|
||||
|
||||
return kDIErrNone;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Perform consistency checks on the filesystem.
|
||||
*
|
||||
* Returns "true" if disk appears to be perfect, "false" otherwise.
|
||||
*/
|
||||
bool
|
||||
DiskFSGutenberg::CheckDiskIsGood(void)
|
||||
{
|
||||
bool result = true;
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Run through our list of files, computing the lengths and marking file
|
||||
* usage in the VolumeUsage object.
|
||||
*/
|
||||
DIError
|
||||
DiskFSGutenberg::GetFileLengths(void)
|
||||
{
|
||||
A2FileGutenberg* pFile;
|
||||
unsigned char sctBuf[kSctSize];
|
||||
int tsCount = 0;
|
||||
unsigned short currentTrack, currentSector;
|
||||
|
||||
pFile = (A2FileGutenberg*) GetNextFile(nil);
|
||||
while (pFile != nil) {
|
||||
DIError dierr;
|
||||
tsCount = 0;
|
||||
currentTrack = pFile->fTrack;
|
||||
currentSector = pFile->fSector;
|
||||
|
||||
while (currentTrack < 0x80) {
|
||||
tsCount ++;
|
||||
dierr = fpImg->ReadTrackSector(currentTrack, currentSector, sctBuf);
|
||||
if (dierr != kDIErrNone) {
|
||||
WMSG1("Gutenberg failed loading track/sector for '%s'\n",
|
||||
pFile->GetPathName());
|
||||
goto bail;
|
||||
}
|
||||
currentTrack = sctBuf[0x04];
|
||||
currentSector = sctBuf[0x05];
|
||||
}
|
||||
pFile->fLengthInSectors = tsCount;
|
||||
pFile->fLength = tsCount * 250; // First six bytes of sector are t/s pointers
|
||||
|
||||
pFile = (A2FileGutenberg*) GetNextFile(pFile);
|
||||
}
|
||||
|
||||
bail:
|
||||
return kDIErrNone;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Convert high ASCII to low ASCII.
|
||||
*
|
||||
* Some people put inverse and flashing text into filenames, not to mention
|
||||
* control characters, so we have to cope with those too.
|
||||
*
|
||||
* We modify the first "len" bytes of "buf" in place.
|
||||
*/
|
||||
/*static*/ void
|
||||
DiskFSGutenberg::LowerASCII(unsigned char* buf, long len)
|
||||
{
|
||||
while (len--) {
|
||||
if (*buf & 0x80) {
|
||||
if (*buf >= 0xa0)
|
||||
*buf &= 0x7f;
|
||||
else
|
||||
*buf = (*buf & 0x7f) + 0x20;
|
||||
} else
|
||||
*buf = ((*buf & 0x3f) ^ 0x20) + 0x20;
|
||||
|
||||
buf++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ===========================================================================
|
||||
* A2FileGutenberg
|
||||
* ===========================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* Constructor.
|
||||
*/
|
||||
A2FileGutenberg::A2FileGutenberg(DiskFS* pDiskFS) : A2File(pDiskFS)
|
||||
{
|
||||
fTrack = -1;
|
||||
fSector = -1;
|
||||
fLengthInSectors = 0;
|
||||
fLocked = true;
|
||||
fFileName[0] = '\0';
|
||||
fFileType = kTypeText;
|
||||
|
||||
fCatTS.track = fCatTS.sector = 0;
|
||||
fCatEntryNum = -1;
|
||||
|
||||
fAuxType = 0;
|
||||
fDataOffset = 0;
|
||||
fLength = -1;
|
||||
fSparseLength = -1;
|
||||
|
||||
fpOpenFile = nil;
|
||||
}
|
||||
|
||||
/*
|
||||
* Destructor. Make sure an "open" file gets "closed".
|
||||
*/
|
||||
A2FileGutenberg::~A2FileGutenberg(void)
|
||||
{
|
||||
delete fpOpenFile;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Convert the filetype enum to a ProDOS type.
|
||||
*
|
||||
*/
|
||||
long
|
||||
A2FileGutenberg::GetFileType(void) const
|
||||
{
|
||||
return 0x04; // TXT;
|
||||
}
|
||||
|
||||
/*
|
||||
* "Fix" a filename. Convert DOS-ASCII to normal ASCII, and strip
|
||||
* trailing spaces.
|
||||
*/
|
||||
void
|
||||
A2FileGutenberg::FixFilename(void)
|
||||
{
|
||||
DiskFSGutenberg::LowerASCII((unsigned char*)fFileName, kMaxFileName);
|
||||
TrimTrailingSpaces(fFileName);
|
||||
}
|
||||
|
||||
/*
|
||||
* Trim the spaces off the end of a filename.
|
||||
*
|
||||
* Assumes the filename has already been converted to low ASCII.
|
||||
*/
|
||||
/*static*/ void
|
||||
A2FileGutenberg::TrimTrailingSpaces(char* filename)
|
||||
{
|
||||
char* lastspc = filename + strlen(filename);
|
||||
|
||||
assert(*lastspc == '\0');
|
||||
|
||||
while (--lastspc) {
|
||||
if (*lastspc != ' ')
|
||||
break;
|
||||
}
|
||||
|
||||
*(lastspc+1) = '\0';
|
||||
}
|
||||
|
||||
/*
|
||||
* Encode a filename into high ASCII, padded out with spaces to
|
||||
* kMaxFileName chars. Lower case is converted to upper case. This
|
||||
* does not filter out control characters or other chunk.
|
||||
*
|
||||
* "buf" must be able to hold kMaxFileName+1 chars.
|
||||
*/
|
||||
/*static*/ void
|
||||
A2FileGutenberg::MakeDOSName(char* buf, const char* name)
|
||||
{
|
||||
for (int i = 0; i < kMaxFileName; i++) {
|
||||
if (*name == '\0')
|
||||
*buf++ = (char) 0xa0;
|
||||
else
|
||||
*buf++ = toupper(*name++) | 0x80;
|
||||
}
|
||||
*buf = '\0';
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Set up state for this file.
|
||||
*/
|
||||
DIError
|
||||
A2FileGutenberg::Open(A2FileDescr** ppOpenFile, bool readOnly,
|
||||
bool rsrcFork /*=false*/)
|
||||
{
|
||||
DIError dierr = kDIErrNone;
|
||||
A2FDGutenberg* pOpenFile = nil;
|
||||
|
||||
if (!readOnly) {
|
||||
if (fpDiskFS->GetDiskImg()->GetReadOnly())
|
||||
return kDIErrAccessDenied;
|
||||
if (fpDiskFS->GetFSDamaged())
|
||||
return kDIErrBadDiskImage;
|
||||
}
|
||||
|
||||
if (fpOpenFile != nil) {
|
||||
dierr = kDIErrAlreadyOpen;
|
||||
goto bail;
|
||||
}
|
||||
|
||||
if (rsrcFork)
|
||||
return kDIErrForkNotFound;
|
||||
|
||||
pOpenFile = new A2FDGutenberg(this);
|
||||
|
||||
pOpenFile->fOffset = 0;
|
||||
pOpenFile->fOpenEOF = fLength;
|
||||
pOpenFile->fOpenSectorsUsed = fLengthInSectors;
|
||||
|
||||
fpOpenFile = pOpenFile; // add it to our single-member "open file set"
|
||||
*ppOpenFile = pOpenFile;
|
||||
pOpenFile = nil;
|
||||
|
||||
bail:
|
||||
delete pOpenFile;
|
||||
return dierr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Dump the contents of an A2FileGutenberg.
|
||||
*/
|
||||
void
|
||||
A2FileGutenberg::Dump(void) const
|
||||
{
|
||||
WMSG1("A2FileGutenberg '%s'\n", fFileName);
|
||||
WMSG2(" TS T=%-2d S=%-2d\n", fTrack, fSector);
|
||||
WMSG2(" Cat T=%-2d S=%-2d\n", fCatTS.track, fCatTS.sector);
|
||||
WMSG3(" type=%d lck=%d slen=%d\n", fFileType, fLocked, fLengthInSectors);
|
||||
WMSG2(" auxtype=0x%04x length=%ld\n",
|
||||
fAuxType, (long) fLength);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ===========================================================================
|
||||
* A2FDGutenberg
|
||||
* ===========================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
* Read data from the current offset.
|
||||
*
|
||||
*/
|
||||
DIError
|
||||
A2FDGutenberg::Read(void* buf, size_t len, size_t* pActual)
|
||||
{
|
||||
WMSG3(" Gutenberg reading %d bytes from '%s' (offset=%ld)\n",
|
||||
len, fpFile->GetPathName(), (long) fOffset);
|
||||
|
||||
A2FileGutenberg* pFile = (A2FileGutenberg*) fpFile;
|
||||
|
||||
DIError dierr = kDIErrNone;
|
||||
unsigned char sctBuf[kSctSize];
|
||||
short currentTrack, currentSector;
|
||||
di_off_t actualOffset = fOffset + pFile->fDataOffset; // adjust for embedded len
|
||||
int bufOffset = 6;
|
||||
size_t thisCount;
|
||||
|
||||
if (len == 0)
|
||||
return kDIErrNone;
|
||||
assert(fOpenEOF != 0);
|
||||
currentTrack = pFile->fTrack;
|
||||
currentSector = pFile->fSector;
|
||||
/* could be more clever in here and avoid double-buffering */
|
||||
while (len) {
|
||||
dierr = pFile->GetDiskFS()->GetDiskImg()->ReadTrackSector(
|
||||
currentTrack,
|
||||
currentSector,
|
||||
sctBuf);
|
||||
if (dierr != kDIErrNone) {
|
||||
WMSG1(" Gutenberg error reading file '%s'\n", pFile->GetPathName());
|
||||
return dierr;
|
||||
}
|
||||
thisCount = kSctSize - bufOffset;
|
||||
if (thisCount > len)
|
||||
thisCount = len;
|
||||
memcpy(buf, sctBuf + bufOffset, thisCount);
|
||||
len -= thisCount;
|
||||
buf = (char*)buf + thisCount;
|
||||
currentTrack = sctBuf[0x04];
|
||||
currentSector = sctBuf[0x05];
|
||||
}
|
||||
|
||||
return dierr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Writing Gutenberg files isn't supported.
|
||||
*
|
||||
*/
|
||||
DIError
|
||||
A2FDGutenberg::Write(const void* buf, size_t len, size_t* pActual)
|
||||
{
|
||||
return kDIErrNotSupported;
|
||||
}
|
||||
|
||||
/*
|
||||
* Seek to the specified offset.
|
||||
*/
|
||||
DIError
|
||||
A2FDGutenberg::Seek(di_off_t offset, DIWhence whence)
|
||||
{
|
||||
return kDIErrNotSupported;
|
||||
}
|
||||
|
||||
/*
|
||||
* Return current offset.
|
||||
*/
|
||||
di_off_t
|
||||
A2FDGutenberg::Tell(void)
|
||||
{
|
||||
return kDIErrNotSupported;
|
||||
}
|
||||
|
||||
/*
|
||||
* Release file state.
|
||||
*
|
||||
* If the file was modified, we need to update the sector usage count in
|
||||
* the catalog track, and possibly a length word in the first sector of
|
||||
* the file (for A/I/B).
|
||||
*
|
||||
* Given the current "write all at once" implementation of Write, we could
|
||||
* have handled the length word back when initially writing the data, but
|
||||
* someday we may fix that and I don't want to have to rewrite this part.
|
||||
*
|
||||
* Most applications don't check the value of "Close", or call it from a
|
||||
* destructor, so we call CloseDescr whether we succeed or not.
|
||||
*/
|
||||
DIError
|
||||
A2FDGutenberg::Close(void)
|
||||
{
|
||||
DIError dierr = kDIErrNone;
|
||||
|
||||
fpFile->CloseDescr(this);
|
||||
return dierr;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Return the #of sectors/blocks in the file.
|
||||
*/
|
||||
long
|
||||
A2FDGutenberg::GetSectorCount(void) const
|
||||
{
|
||||
return fTSCount;
|
||||
}
|
||||
long
|
||||
A2FDGutenberg::GetBlockCount(void) const
|
||||
{
|
||||
return (fTSCount+1)/2;
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the Nth track/sector in this file.
|
||||
*
|
||||
* Returns (0,0) for a sparse sector.
|
||||
*/
|
||||
DIError
|
||||
A2FDGutenberg::GetStorage(long sectorIdx, long* pTrack, long* pSector) const
|
||||
{
|
||||
return kDIErrInvalidIndex;
|
||||
}
|
||||
/*
|
||||
* Unimplemented
|
||||
*/
|
||||
DIError
|
||||
A2FDGutenberg::GetStorage(long blockIdx, long* pBlock) const
|
||||
{
|
||||
return kDIErrInvalidIndex;
|
||||
}
|
||||
@ -162,6 +162,10 @@ SOURCE=.\Global.cpp
|
||||
# End Source File
|
||||
# Begin Source File
|
||||
|
||||
SOURCE=.\Gutenberg.cpp
|
||||
# End Source File
|
||||
# Begin Source File
|
||||
|
||||
SOURCE=.\HFS.cpp
|
||||
# End Source File
|
||||
# Begin Source File
|
||||
|
||||
Loading…
Reference in New Issue
Block a user