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 #include <apt-pkg/pkgcache.h>
  27
  28 #include <string>
  29 #include <iostream>
  30 #include <set>
  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    static bool SigINTStop;
  43
  44    protected:
  45    std::string *FileNames;
  46    pkgDepCache &Cache;
  47    pkgOrderList *List;
  48    bool Debug;
  49    bool NoImmConfigure;
  50    bool ImmConfigureAll;
  51
  52    /** \brief saves packages dpkg let disappear
  53
  54        This way APT can retreat from trying to configure these
  55        packages later on and a frontend can choose to display a
  56        notice to inform the user about these disappears.
  57    */
  58    std::set<std::string> disappearedPkgs;
  59
  60    void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth = 0);
  61    virtual OrderResult OrderInstall();
  62    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  63    bool CreateOrderList();
  64
  65    // Analysis helpers
  66    bool DepAlwaysTrue(DepIterator D);
  67
  68    // Install helpers
  69    bool ConfigureAll();
  70    bool SmartConfigure(PkgIterator Pkg, int const Depth);
  71    //FIXME: merge on abi break
  72    bool SmartUnPack(PkgIterator Pkg);
  73    bool SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth);
  74    bool SmartRemove(PkgIterator Pkg);
  75    bool EarlyRemove(PkgIterator Pkg);
  76
  77    // The Actual installation implementation
  78    virtual bool Install(PkgIterator /*Pkg*/,std::string /*File*/) {return false;};
  79    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  80    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  81    virtual bool Go(int statusFd=-1) {return true;};
  82    virtual void Reset() {};
  83
  84    // the result of the operation
  85    OrderResult Res;
  86
  87    public:
  88
  89    // Main action members
  90    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
  91                     pkgRecords *Recs);
  92
  93    // Do the installation
  94    OrderResult DoInstall(int statusFd=-1);
  95
  96    // stuff that needs to be done before the fork() of a library that
  97    // uses apt
  98    OrderResult DoInstallPreFork() {
  99       Res = OrderInstall();
 100       return Res;
 101    };
 102
 103    // stuff that needs to be done after the fork
 104    OrderResult DoInstallPostFork(int statusFd=-1);
 105    bool FixMissing();
 106
 107    /** \brief returns all packages dpkg let disappear */
 108    inline std::set<std::string> GetDisappearedPackages() { return disappearedPkgs; };
 109
 110    pkgPackageManager(pkgDepCache *Cache);
 111    virtual ~pkgPackageManager();
 112 };
 113
 114 #endif