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CPIOOutputStream.h

Go to the documentation of this file.

#ifndef CLASSLIB_CPIO_OUTPUT_STREAM_H
# define CLASSLIB_CPIO_OUTPUT_STREAM_H

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

# include "classlib/zip/CPIOConstants.h"
# include "classlib/iotools/FilterOutputStream.h"

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

class CPIOMember;
class MemoryStorage;

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

// FIXME: this won't work with real tape devices, since we only pretend
// to write up to the record size.  we don't actually ever do, we just
// pad up to the right size at the end.

class CPIOOutputStream : public FilterOutputStream, public CPIOConstants
{
public:
    CPIOOutputStream (OutputStream *output, int format = ODC_MAGIC);
    ~CPIOOutputStream (void);
    // no copy constructor
    // no assignment operator

    using FilterOutputStream::write;
    virtual void        nextMember (CPIOMember *member, bool autobuffer=false);
    virtual IOSize      write (const void *from, IOSize n);
    virtual void        closeMember (void);
    virtual void        finish (void);

protected:
    virtual void        writeHeader (void);

private:
    void                writePosixHeader (void);
    void                writeSvrHeader (void);

    int                 m_format;       //< Archive format (one of magic values)
    CPIOMember          *m_current;     //< Current member we are writing
    MemoryStorage       *m_buffer;      //< Automatic buffer if requested
    IOOffset            m_remaining;    //< Bytes still to come for this member
    unsigned            m_checksum;     //< Checksum of file contents (only for autobuffer)
    bool                m_finished;     //< Indicates when #finished() was done
};

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

} // namespace lat
#endif // CLASSLIB_CPIO_OUTPUT_STREAM_H

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