apt-pkg/packagemanager.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: packagemanager.h,v 1.14 2001/05/07 04:24:08 jgg Exp $
   4 /* ######################################################################
   5
   6    Package Manager - Abstacts the package manager
   7
   8    Three steps are
   9      - Aquiration of archives (stores the list of final file names)
  10      - Sorting of operations
  11      - Invokation of package manager
  12
  13    This is the final stage when the package cache entities get converted
  14    into file names and the state stored in a DepCache is transformed
  15    into a series of operations.
  16
  17    In the final scheme of things this may serve as a director class to
  18    access the actual install methods based on the file type being
  19    installed.
  20
  21    ##################################################################### */
  22                                                                         /*}}}*/
  23 #ifndef PKGLIB_PACKAGEMANAGER_H
  24 #define PKGLIB_PACKAGEMANAGER_H
  25
  26 #ifdef __GNUG__
  27 #pragma interface "apt-pkg/packagemanager.h"
  28 #endif
  29
  30 #include <string>
  31 #include <apt-pkg/pkgcache.h>
  32
  33 using std::string;
  34
  35 class pkgAcquire;
  36 class pkgDepCache;
  37 class pkgSourceList;
  38 class pkgOrderList;
  39 class pkgRecords;
  40 class pkgPackageManager : protected pkgCache::Namespace
  41 {
  42    public:
  43
  44    enum OrderResult {Completed,Failed,Incomplete};
  45
  46    protected:
  47    string *FileNames;
  48    pkgDepCache &Cache;
  49    pkgOrderList *List;
  50    bool Debug;
  51
  52    bool DepAdd(pkgOrderList &Order,PkgIterator P,int Depth = 0);
  53    virtual OrderResult OrderInstall();
  54    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  55    bool CreateOrderList();
  56
  57    // Analysis helpers
  58    bool DepAlwaysTrue(DepIterator D);
  59
  60    // Install helpers
  61    bool ConfigureAll();
  62    bool SmartConfigure(PkgIterator Pkg);
  63    bool SmartUnPack(PkgIterator Pkg);
  64    bool SmartRemove(PkgIterator Pkg);
  65    bool EarlyRemove(PkgIterator Pkg);
  66
  67    // The Actual installation implementation
  68    virtual bool Install(PkgIterator /*Pkg*/,string /*File*/) {return false;};
  69    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  70    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  71    virtual bool Go(int statusFd=-1) {return true;};
  72    virtual void Reset() {};
  73
  74    public:
  75
  76    // Main action members
  77    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
  78                     pkgRecords *Recs);
  79    OrderResult DoInstall();
  80    bool FixMissing();
  81
  82    pkgPackageManager(pkgDepCache *Cache);
  83    virtual ~pkgPackageManager();
  84 };
  85
  86 #endif