152 lines
5.6 KiB
C
152 lines
5.6 KiB
C
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/*
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* PKARC.H
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*
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* Header file for ArchiveLib 2.0
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*
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* Copyright (c) 1994-1996 Greenleaf Software, Inc.
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* All Rights Reserved
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*
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* DESCRIPTION
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*
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* This header file contains the class definition for class
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* ALPkArchive.
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*
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* CLASS DEFINITIONS:
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*
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* ALPkArchive
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*
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* REVISION HISTORY
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*
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* February 14, 1996 2.0A : New release
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*/
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#ifndef _PKARC_H
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#define _PKARC_H
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#if defined( __cplusplus )
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/*
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* class ALPkArchive
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*
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* DESCRIPTION
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*
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* ALPkArchive defines the interface to PKWare archive objects, on disk,
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* memory, or whatever. It is a derived class that is a sibling to ALGlArchive.
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* Most of the interface to this archive class is defined in the base
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* class.
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*
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* DATA MEMBERS
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*
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* mlStartOfCentralDir : An offset in the archive to the start of
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* the central directory.
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*
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* mEcd : A copy of the End-Of-Central-Directory record,
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* as found in the ZIP file.
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*
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* MEMBER FUNCTIONS
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*
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* ALPkArchive() : Construct from a storage object
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* ALPkArchive() : Construct from a named ALFile object
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* ~ALPkArchive() : The virtual destructor.
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* operator new() : Memory allocation operator used when
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* the library is in a DLL
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* ReadEcd() : Function used to read in the
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* End-Of-Central-Directory record, mEcd.
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* LocateEcd)( : Locates the ECD by stumbling around near
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* the end of the file.
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* AddJobs() : Virtual function that adds new objects
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* to the PKWare archive.
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* WriteArchiveData() : Called by the base class to write archive
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* specific data.
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* ReadArchiveData() : Called by the base class to read archive
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* specific data.
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* PreCompress() : Virtual function called by the base class
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* before compressing an object.
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* PostCompress() : Virtual function called by the base class
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* after compressing an object.
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* PreDecompress() : Virtual function called by the base class
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* before decompressing an object.
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* PreWriteDir() : Virtual function called by the base class
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* before writing the directory information
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* to the storage object.
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* WriteDirEntry() : Virtual function called by the base class
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* to write an entry in a directory.
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* PostWriteDir() : Virtual function called by the base class
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* after writing all the directory entries.
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* PreCopyInput() : Virtual function called by the base class
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* before copying a compressed file.
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* ReadDirectory() : Virtual function that reads in the entire
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* ZIP file directory.
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*
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* REVISION HISTORY
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*
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* May 26, 1994 1.0A : First release
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*
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* February 14, 1996 2.0A : New release
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*/
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class AL_CLASS_TYPE ALPkArchive : public ALArchive { /* Tag public class */
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/*
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* Constructors, destructors, declarations, and friends
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*/
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protected :
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public :
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AL_PROTO ALPkArchive( ALStorage AL_DLL_FAR & );
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AL_PROTO ALPkArchive( const char AL_DLL_FAR *file_name );
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virtual AL_PROTO ~ALPkArchive();
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#if defined( AL_USING_DLL ) || defined( AL_BUILDING_DLL )
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void AL_DLL_FAR * AL_PROTO operator new( size_t size );
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#endif
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/* The copy constructor and assignment operator do not exist. */
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protected :
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AL_PROTO ALPkArchive( const ALPkArchive AL_DLL_FAR & );
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ALPkArchive AL_DLL_FAR & AL_PROTO operator=( ALPkArchive AL_DLL_FAR &rhs );
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/*
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* Member functions
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*/
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protected :
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int AL_PROTO ALPkArchive::ReadEcd();
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int AL_PROTO ALPkArchive::LocateEcd();
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int AL_PROTO AddJobs( ALEntryList AL_DLL_FAR & list );
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virtual int AL_PROTO WriteArchiveData();
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virtual int AL_PROTO ReadArchiveData();
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virtual void AL_PROTO PreCompress( ALEntry AL_DLL_FAR &entry );
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virtual void AL_PROTO PostCompress( ALEntry AL_DLL_FAR &entry );
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virtual void AL_PROTO PreDecompress( ALEntry AL_DLL_FAR &entry );
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virtual void AL_PROTO PreWriteDir();
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virtual void AL_PROTO WriteDirEntry( ALEntry AL_DLL_FAR &entry );
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virtual void AL_PROTO PostWriteDir();
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virtual void AL_PROTO PreCopyInput( ALEntry AL_DLL_FAR &entry );
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/*
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* These functions provide the public API to an archive
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*/
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public :
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virtual int AL_PROTO ReadDirectory( ALEntryList AL_DLL_FAR &list );
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/*
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* Some protected data members
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*/
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protected :
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struct AL_CLASS_TYPE { /* Tag protected class */
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long mlOffset;
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short int muThisDiskNumber;
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short int muStartCentralDirDiskNumber;
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short int muThisDiskCentralDirEntries;
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short int muTotalCentralDirEntries;
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long mlSizeCentralDir;
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} mEcd;
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long mlStartOfCentralDir;
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public :
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AL_CLASS_TAG( _ALPkArchiveTag );
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};
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#else /* #if defined( __cplusplus ) ... */
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AL_LINKAGE hALArchive AL_FUNCTION
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newALPkArchiveFromStorage( hALStorage storage );
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AL_LINKAGE hALArchive AL_FUNCTION
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newALPkArchive( char AL_DLL_FAR *name );
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#endif /* #if defined( __cplusplus ) ... #else ... */
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#endif /* #ifndef _PKARC_H */
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