apt-pkg/cachefile.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: cachefile.h,v 1.4 2001/02/20 07:03:17 jgg Exp $
   4 /* ######################################################################
   5
   6    CacheFile - Simple wrapper class for opening, generating and whatnot
   7
   8    This class implements a simple 2 line mechanism to open various sorts
   9    of caches. It can operate as root, as not root, show progress and so on,
  10    it transparently handles everything necessary.
  11
  12    This means it can rebuild caches from the source list and instantiates
  13    and prepares the standard policy mechanism.
  14
  15    ##################################################################### */
  16                                                                         /*}}}*/
  17 #ifndef PKGLIB_CACHEFILE_H
  18 #define PKGLIB_CACHEFILE_H
  19
  20 #ifdef __GNUG__
  21 #pragma interface "apt-pkg/cachefile.h"
  22 #endif
  23
  24 #include <apt-pkg/depcache.h>
  25
  26 class pkgPolicy;
  27 class pkgCacheFile
  28 {
  29    protected:
  30
  31    MMap *Map;
  32    pkgCache *Cache;
  33    pkgDepCache *DCache;
  34
  35    public:
  36
  37    pkgPolicy *Policy;
  38
  39    // We look pretty much exactly like a pointer to a dep cache
  40    inline operator pkgCache &() {return *Cache;};
  41    inline operator pkgCache *() {return Cache;};
  42    inline operator pkgDepCache &() {return *DCache;};
  43    inline operator pkgDepCache *() {return DCache;};
  44    inline pkgDepCache *operator ->() {return DCache;};
  45    inline pkgDepCache &operator *() {return *DCache;};
  46    inline pkgDepCache::StateCache &operator [](pkgCache::PkgIterator const &I) {return (*DCache)[I];};
  47    inline unsigned char &operator [](pkgCache::DepIterator const &I) {return (*DCache)[I];};
  48
  49    bool Open(OpProgress &Progress,bool WithLock = true);
  50    void Close();
  51
  52    pkgCacheFile();
  53    ~pkgCacheFile();
  54 };
  55
  56 #endif