Package Record parser

[ntk/apt.git] / apt-pkg / pkgrecords.h

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: pkgrecords.h,v 1.1 1998/08/09 00:51:35 jgg Exp $
/* ######################################################################
   
   Package Records - Allows access to complete package description records
                     directly from the file.
   
   The package record system abstracts the actual parsing of the 
   package files. This is different than the generators parser in that
   it is used to access information not generate information. No 
   information touched by the generator should be parable from here as
   it can always be retreived directly from the cache.
   
   ##################################################################### */
									/*}}}*/
// Header section: pkglib
#ifndef PKGLIB_PKGRECORDS_H
#define PKGLIB_PKGRECORDS_H

#ifdef __GNUG__
#pragma interface "apt-pkg/pkgrecords.h"
#endif 

#include <apt-pkg/pkgcache.h>
#include <apt-pkg/fileutl.h>

class pkgRecords
{
   public:
   class Parser;
   
   private:
   
   pkgCache &Cache;
   
   // List of package files
   struct PkgFile
   {
      FileFd *File;
      Parser *Parse;

      PkgFile() : File(0), Parse(0) {};
      ~PkgFile();
   };
   PkgFile *Files;
   
   public:

   // Lookup function
   Parser &Lookup(pkgCache::VerFileIterator &Ver);
      
   // Construct destruct
   pkgRecords(pkgCache &Cache);
   ~pkgRecords();
};

class pkgRecords::Parser
{
   public:
   
   virtual bool Jump(pkgCache::VerFileIterator &Ver) = 0;
   
   virtual ~Parser() {};
};

#endif