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TarInputStream.h

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#ifndef CLASSLIB_TAR_INPUT_STREAM_H
# define CLASSLIB_TAR_INPUT_STREAM_H

//<<<<<< INCLUDES                                                       >>>>>>

# include "classlib/zip/TarConstants.h"
# include "classlib/iotools/FilterInputStream.h"
# include <string>

namespace lat {
//<<<<<< PUBLIC DEFINES                                                 >>>>>>
//<<<<<< PUBLIC CONSTANTS                                               >>>>>>
//<<<<<< PUBLIC TYPES                                                   >>>>>>

class TarMember;

//<<<<<< PUBLIC VARIABLES                                               >>>>>>
//<<<<<< PUBLIC FUNCTIONS                                               >>>>>>
//<<<<<< CLASS DECLARATIONS                                             >>>>>>

class TarInputStream : public FilterInputStream, public TarConstants
{
public:
    TarInputStream (InputStream *input);
    ~TarInputStream (void);
    // no copy constructor
    // no assignment operator

    using FilterInputStream::read;
    virtual TarMember * nextMember (void);
    virtual IOSize      available (void);
    virtual IOSize      read (void *into, IOSize n);
    virtual IOSize      skip (IOSize n);
    virtual void        closeMember (void);

    virtual void        close (void);
    virtual void        reset (void);

private:
    bool                validate (const void *buf, IOSize length);
    std::string         extractStr (const void *buf, IOSize max);

    TarMember           *m_current;     //< Current member
    IOOffset            m_remaining;    //< Bytes left of current member
    IOOffset            m_padding;      //< Bytes of padding after member
};

//<<<<<< INLINE PUBLIC FUNCTIONS                                        >>>>>>
//<<<<<< INLINE MEMBER FUNCTIONS                                        >>>>>>

} // namespace lat
#endif // CLASSLIB_TAR_INPUT_STREAM_H

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