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
  27 #include <string>
  28 #include <apt-pkg/pkgcache.h>
  29
  30 using std::string;
  31
  32 class pkgAcquire;
  33 class pkgDepCache;
  34 class pkgSourceList;
  35 class pkgOrderList;
  36 class pkgRecords;
  37 class pkgPackageManager : protected pkgCache::Namespace
  38 {
  39    public:
  40
  41    enum OrderResult {Completed,Failed,Incomplete};
  42
  43    protected:
  44    string *FileNames;
  45    pkgDepCache &Cache;
  46    pkgOrderList *List;
  47    bool Debug;
  48
  49    bool DepAdd(pkgOrderList &Order,PkgIterator P,int Depth = 0);
  50    virtual OrderResult OrderInstall();
  51    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  52    bool CreateOrderList();
  53
  54    // Analysis helpers
  55    bool DepAlwaysTrue(DepIterator D);
  56
  57    // Install helpers
  58    bool ConfigureAll();
  59    bool SmartConfigure(PkgIterator Pkg);
  60    bool SmartUnPack(PkgIterator Pkg);
  61    bool SmartRemove(PkgIterator Pkg);
  62    bool EarlyRemove(PkgIterator Pkg);
  63
  64    // The Actual installation implementation
  65    virtual bool Install(PkgIterator /*Pkg*/,string /*File*/) {return false;};
  66    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  67    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  68    virtual bool Go(int statusFd=-1) {return true;};
  69    virtual void Reset() {};
  70
  71    public:
  72
  73    // Main action members
  74    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
  75                     pkgRecords *Recs);
  76    OrderResult DoInstall(int statusFd=-1);
  77    bool FixMissing();
  78
  79    pkgPackageManager(pkgDepCache *Cache);
  80    virtual ~pkgPackageManager();
  81 };
  82
  83 #endif