mirror of
https://github.com/marketideas/qasm.git
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264 lines
9.4 KiB
C++
264 lines
9.4 KiB
C++
/*
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* CiderPress
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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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/*
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* Binary II support.
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*/
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#ifndef APP_BNYARCHIVE_H
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#define APP_BNYARCHIVE_H
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#include "GenericArchive.h"
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class BnyArchive;
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/*
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* One file in a BNY archive.
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*/
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class BnyEntry : public GenericEntry {
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public:
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BnyEntry(BnyArchive* pArchive) :
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fpArchive(pArchive), fIsSqueezed(false), fOffset(-1)
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{}
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virtual ~BnyEntry(void) {}
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virtual int ExtractThreadToBuffer(int which, char** ppText, long* pLength,
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CString* pErrMsg) const override;
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virtual int ExtractThreadToFile(int which, FILE* outfp, ConvertEOL conv,
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ConvertHighASCII convHA, CString* pErrMsg) const override;
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virtual long GetSelectionSerial(void) const override
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{ return -1; } // doesn't matter
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virtual bool GetFeatureFlag(Feature feature) const override {
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if (feature == kFeaturePascalTypes || feature == kFeatureDOSTypes ||
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feature == kFeatureHasSimpleAccess)
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return false;
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else
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return true;
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}
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/*
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* Test this entry by extracting it.
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*
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* If the file isn't compressed, just make sure the file is big enough. If
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* it's squeezed, invoke the un-squeeze function with a "NULL" buffer pointer.
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*/
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NuError TestEntry(CWnd* pMsgWnd);
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bool GetSqueezed(void) const { return fIsSqueezed; }
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void SetSqueezed(bool val) { fIsSqueezed = val; }
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long GetOffset(void) const { return fOffset; }
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void SetOffset(long offset) { fOffset = offset; }
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enum {
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kBNYBlockSize = 128,
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};
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private:
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/*
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* Copy data from the seeked archive to outfp, possibly converting EOL along
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* the way.
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*/
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NuError CopyData(FILE* outfp, ConvertEOL conv, ConvertHighASCII convHA,
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CString* pMsg) const;
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//NuError BNYUnSqueeze(ExpandBuffer* outExp) const;
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BnyArchive* fpArchive; // holds FILE* for archive
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bool fIsSqueezed;
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long fOffset;
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};
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/*
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* BNY archive definition.
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*/
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class BnyArchive : public GenericArchive {
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public:
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BnyArchive(void) : fIsReadOnly(false), fFp(NULL)
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{}
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virtual ~BnyArchive(void) { (void) Close(); }
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// One-time initialization; returns an error string.
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static CString AppInit(void);
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virtual OpenResult Open(const WCHAR* filename, bool readOnly,
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CString* pErrMsg) override;
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virtual CString New(const WCHAR* filename, const void* options) override;
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virtual CString Flush(void) override { return ""; }
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virtual CString Reload(void) override;
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virtual bool IsReadOnly(void) const override { return fIsReadOnly; };
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virtual bool IsModified(void) const override { return false; }
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virtual CString GetDescription() const override { return L"Binary II"; }
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virtual bool BulkAdd(ActionProgressDialog* pActionProgress,
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const AddFilesDialog* pAddOpts) override
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{ ASSERT(false); return false; }
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virtual bool AddDisk(ActionProgressDialog* pActionProgress,
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const AddFilesDialog* pAddOpts) override
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{ ASSERT(false); return false; }
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virtual bool CreateSubdir(CWnd* pMsgWnd, GenericEntry* pParentEntry,
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const WCHAR* newName) override
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{ ASSERT(false); return false; }
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virtual bool TestSelection(CWnd* pMsgWnd, SelectionSet* pSelSet) override;
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virtual bool DeleteSelection(CWnd* pMsgWnd, SelectionSet* pSelSet) override
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{ ASSERT(false); return false; }
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virtual bool RenameSelection(CWnd* pMsgWnd, SelectionSet* pSelSet) override
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{ ASSERT(false); return false; }
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virtual bool RenameVolume(CWnd* pMsgWnd, DiskFS* pDiskFS,
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const WCHAR* newName) override
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{ ASSERT(false); return false; }
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virtual CString TestVolumeName(const DiskFS* pDiskFS,
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const WCHAR* newName) const override
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{ ASSERT(false); return "!"; }
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virtual CString TestPathName(const GenericEntry* pGenericEntry,
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const CString& basePath, const CString& newName,
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char newFssep) const override
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{ ASSERT(false); return "!"; }
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virtual bool RecompressSelection(CWnd* pMsgWnd, SelectionSet* pSelSet,
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const RecompressOptionsDialog* pRecompOpts) override
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{ ASSERT(false); return false; }
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virtual XferStatus XferSelection(CWnd* pMsgWnd, SelectionSet* pSelSet,
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ActionProgressDialog* pActionProgress,
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const XferFileOptions* pXferOpts) override
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{ ASSERT(false); return kXferFailed; }
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virtual bool GetComment(CWnd* pMsgWnd, const GenericEntry* pEntry,
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CString* pStr) override
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{ ASSERT(false); return false; }
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virtual bool SetComment(CWnd* pMsgWnd, GenericEntry* pEntry,
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const CString& str) override
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{ ASSERT(false); return false; }
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virtual bool DeleteComment(CWnd* pMsgWnd, GenericEntry* pEntry) override
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{ ASSERT(false); return false; }
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virtual bool SetProps(CWnd* pMsgWnd, GenericEntry* pEntry,
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const FileProps* pProps) override
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{ ASSERT(false); return false; }
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virtual void PreferencesChanged(void) override {}
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virtual long GetCapability(Capability cap) override;
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friend class BnyEntry;
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private:
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virtual CString Close(void) {
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if (fFp != NULL) {
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fclose(fFp);
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fFp = NULL;
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}
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return "";
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}
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virtual void XferPrepare(const XferFileOptions* pXferOpts) override
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{ ASSERT(false); }
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virtual CString XferFile(LocalFileDetails* pDetails, uint8_t** pDataBuf,
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long dataLen, uint8_t** pRsrcBuf, long rsrcLen) override
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{ ASSERT(false); return "!"; }
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virtual void XferAbort(CWnd* pMsgWnd) override
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{ ASSERT(false); }
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virtual void XferFinish(CWnd* pMsgWnd) override
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{ ASSERT(false); }
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virtual ArchiveKind GetArchiveKind(void) override { return kArchiveBNY; }
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virtual NuError DoAddFile(const AddFilesDialog* pAddOpts,
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LocalFileDetails* pDetails) override
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{ ASSERT(false); return kNuErrGeneric; }
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enum {
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kBNYBlockSize = BnyEntry::kBNYBlockSize,
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kBNYMaxFileName = 64,
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kBNYMaxNativeName = 48,
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kBNYFlagCompressed = (1<<7),
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kBNYFlagEncrypted = (1<<6),
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kBNYFlagSparse = (1),
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};
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/*
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* An entry in a Binary II archive. Each archive is essentially a stream
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* of files; only the "filesToFollow" value gives any indication that
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* something else follows this entry.
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*
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* We read this from the archive and then unpack it into GenericEntry
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* fields in a BnyEntry.
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*/
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// struct BnyFileEntry; // VC++6 needs these to access private enums
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// friend struct BnyFileEntry; // in this class
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typedef struct BnyFileEntry {
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uint16_t access;
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uint16_t fileType;
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uint32_t auxType;
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uint8_t storageType;
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uint32_t fileSize; /* in 512-byte blocks */
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uint16_t prodosModDate;
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uint16_t prodosModTime;
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NuDateTime modWhen; /* computed from previous two fields */
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uint16_t prodosCreateDate;
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uint16_t prodosCreateTime;
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NuDateTime createWhen; /* computed from previous two fields */
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uint32_t eof;
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uint32_t realEOF; /* eof is bogus for directories */
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char fileName[kBNYMaxFileName+1];
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char nativeName[kBNYMaxNativeName+1];
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uint32_t diskSpace; /* in 512-byte blocks */
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uint8_t osType; /* not exactly same as NuFileSysID */
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uint16_t nativeFileType;
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uint8_t phantomFlag;
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uint8_t dataFlags; /* advisory flags */
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uint8_t version;
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uint8_t filesToFollow; /* #of files after this one */
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uint8_t blockBuf[kBNYBlockSize];
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} BnyFileEntry;
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int LoadContents(void);
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/*
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* Given a BnyFileEntry structure, add an appropriate entry to the list.
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*
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* Note this can mangle pEntry (notably the filename).
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*/
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NuError LoadContentsCallback(BnyFileEntry* pEntry);
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/*
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* Test for the magic number on a file in SQueezed format.
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*/
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bool IsSqueezed(uint8_t one, uint8_t two);
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/*
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* Test if this entry is a directory.
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*/
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bool IsDir(BnyFileEntry* pEntry);
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/*
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* Wrapper for fread(). Note the arguments resemble read(2) rather
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* than fread(3S).
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*/
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NuError BNYRead(void* buf, size_t nbyte);
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/*
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* Seek within an archive. Because we need to handle streaming archives,
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* and don't need to special-case anything, we only allow relative
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* forward seeks.
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*/
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NuError BNYSeek(long offset);
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/*
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* Convert from ProDOS compact date format to the expanded DateTime format.
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*/
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void BNYConvertDateTime(unsigned short prodosDate,
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unsigned short prodosTime, NuDateTime* pWhen);
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/*
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* Decode a Binary II header.
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*/
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NuError BNYDecodeHeader(BnyFileEntry* pEntry);
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/*
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* Iterate through a Binary II archive, loading the data.
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*/
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NuError BNYIterate(void);
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FILE* fFp;
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bool fIsReadOnly;
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};
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#endif /*APP_BNYARCHIVE_H*/
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