apt-pkg/packagemanager.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: packagemanager.h,v 1.10 1999/07/20 05:53:33 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 // Header section: pkglib
  24 #ifndef PKGLIB_PACKAGEMANAGER_H
  25 #define PKGLIB_PACKAGEMANAGER_H
  26
  27 #ifdef __GNUG__
  28 #pragma interface "apt-pkg/packagemanager.h"
  29 #endif
  30
  31 #include <string>
  32 #include <apt-pkg/pkgcache.h>
  33
  34 class pkgAcquire;
  35 class pkgDepCache;
  36 class pkgSourceList;
  37 class pkgOrderList;
  38 class pkgRecords;
  39 class pkgPackageManager
  40 {
  41    public:
  42
  43    enum OrderResult {Completed,Failed,Incomplete};
  44
  45    protected:
  46    string *FileNames;
  47    pkgDepCache &Cache;
  48    pkgOrderList *List;
  49    bool Debug;
  50
  51    // Bring some usefull types into the local scope
  52    typedef pkgCache::PkgIterator PkgIterator;
  53    typedef pkgCache::VerIterator VerIterator;
  54    typedef pkgCache::DepIterator DepIterator;
  55    typedef pkgCache::PrvIterator PrvIterator;
  56    typedef pkgCache::Version Version;
  57    typedef pkgCache::Package Package;
  58
  59    bool DepAdd(pkgOrderList &Order,PkgIterator P,int Depth = 0);
  60    OrderResult OrderInstall();
  61    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  62    bool CreateOrderList();
  63
  64    // Analysis helpers
  65    bool DepAlwaysTrue(DepIterator D);
  66
  67    // Install helpers
  68    bool ConfigureAll();
  69    bool SmartConfigure(PkgIterator Pkg);
  70    bool SmartUnPack(PkgIterator Pkg);
  71    bool SmartRemove(PkgIterator Pkg);
  72    bool EarlyRemove(PkgIterator Pkg);
  73
  74    // The Actuall installation implementation
  75    virtual bool Install(PkgIterator /*Pkg*/,string /*File*/) {return false;};
  76    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  77    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  78    virtual bool Go() {return true;};
  79    virtual void Reset() {};
  80
  81    public:
  82
  83    // Main action members
  84    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
  85                     pkgRecords *Recs);
  86    OrderResult DoInstall();
  87    bool FixMissing();
  88
  89    pkgPackageManager(pkgDepCache &Cache);
  90    virtual ~pkgPackageManager();
  91 };
  92
  93 #endif