154 lines
2.8 KiB
C++
154 lines
2.8 KiB
C++
#ifndef __FILE_H__
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#define __FILE_H__
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#include "DateRec.h"
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#include <vector>
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namespace ProFUSE {
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class BlockDevice;
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class AbstractBlockCache;
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}
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namespace Pascal {
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enum {
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kUntypedFile,
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kBadBlockFile,
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kCodeFile,
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kTextFile,
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kInfoFile,
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kDataFile,
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kGrafFile,
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kFotoFile,
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kSecureDir
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};
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class FileEntry;
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class VolumeEntry;
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class Entry {
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public:
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virtual ~Entry();
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unsigned blocks() const { return _firstBlock - _lastBlock; }
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unsigned firstBlock() const { return _firstBlock; }
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unsigned lastBlock() const { return _lastBlock; }
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unsigned fileKind() const { return _fileKind; }
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unsigned inode() const { return _inode; }
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void setInode(unsigned inode) { _inode = inode; }
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VolumeEntry *parent() { return _parent; }
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protected:
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Entry();
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Entry(void *);
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void init(void *);
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unsigned _firstBlock;
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unsigned _lastBlock;
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unsigned _fileKind;
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unsigned _inode;
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private:
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friend class VolumeEntry;
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VolumeEntry *_parent;
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};
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class VolumeEntry : public Entry {
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public:
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VolumeEntry(ProFUSE::BlockDevice *);
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virtual ~VolumeEntry();
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const char *name() const { return _fileName; }
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unsigned fileCount() const { return _fileCount; }
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Pascal::DateRec lastBoot() const { return _lastBoot; }
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FileEntry *fileAtIndex(unsigned i) const;
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void *loadBlock(unsigned block);
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void unloadBlock(unsigned block, bool dirty = false);
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void readBlock(unsigned block, void *);
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void writeBlock(unsigned block, void *);
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private:
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VolumeEntry();
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void init(void *);
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unsigned _fileNameLength;
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char _fileName[8];
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unsigned _lastVolumeBlock;
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unsigned _fileCount;
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unsigned _accessTime;
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Pascal::DateRec _lastBoot;
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std::vector<FileEntry *> _files;
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unsigned _inodeGenerator;
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ProFUSE::BlockDevice *_device;
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ProFUSE::AbstractBlockCache *_cache;
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};
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class FileEntry : public Entry {
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public:
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FileEntry(void *vp);
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virtual ~FileEntry();
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unsigned fileSize();
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int read(uint8_t *buffer, unsigned size, unsigned offset);
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const char *name() const { return _fileName; }
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DateRec modification() const { return _modification; }
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protected:
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unsigned _status;
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unsigned _fileNameLength;
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char _fileName[16];
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unsigned _lastByte;
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DateRec _modification;
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// non-text files
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unsigned dataFileSize();
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int dataRead(uint8_t *buffer, unsigned size, unsigned offset);
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// for text files.
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void textInit();
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unsigned textFileSize();
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int textRead(uint8_t *buffer, unsigned size, unsigned offset);
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unsigned textReadPage(unsigned block, uint8_t *in);
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unsigned textDecodePage(unsigned block, uint8_t *out);
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std::vector<unsigned> *_pageSize;
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unsigned _fileSize;
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};
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}
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#endif
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