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 #include <apt-pkg/iprogress.h>
  28
  29 #include <string>
  30 #include <iostream>
  31 #include <set>
  32
  33 #ifndef APT_8_CLEANER_HEADERS
  34 #include <apt-pkg/depcache.h>
  35 using std::string;
  36 #endif
  37
  38 class pkgAcquire;
  39 class pkgDepCache;
  40 class pkgSourceList;
  41 class pkgOrderList;
  42 class pkgRecords;
  43
  44
  45 class pkgPackageManager : protected pkgCache::Namespace
  46 {
  47    public:
  48
  49    enum OrderResult {Completed,Failed,Incomplete};
  50    static bool SigINTStop;
  51
  52    protected:
  53    std::string *FileNames;
  54    pkgDepCache &Cache;
  55    pkgOrderList *List;
  56    bool Debug;
  57    bool NoImmConfigure;
  58    bool ImmConfigureAll;
  59
  60    /** \brief saves packages dpkg let disappear
  61
  62        This way APT can retreat from trying to configure these
  63        packages later on and a frontend can choose to display a
  64        notice to inform the user about these disappears.
  65    */
  66    std::set<std::string> disappearedPkgs;
  67
  68    void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth = 0);
  69    virtual OrderResult OrderInstall();
  70    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  71    bool CreateOrderList();
  72
  73    // Analysis helpers
  74    bool DepAlwaysTrue(DepIterator D);
  75
  76    // Install helpers
  77    bool ConfigureAll();
  78    bool SmartConfigure(PkgIterator Pkg, int const Depth);
  79    //FIXME: merge on abi break
  80    bool SmartUnPack(PkgIterator Pkg);
  81    bool SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth);
  82    bool SmartRemove(PkgIterator Pkg);
  83    bool EarlyRemove(PkgIterator Pkg);
  84
  85    // The Actual installation implementation
  86    virtual bool Install(PkgIterator /*Pkg*/,std::string /*File*/) {return false;};
  87    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  88    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  89    virtual bool Go(APT::Progress::PackageManager *progress) {return true;};
  90    virtual void Reset() {};
  91
  92    // the result of the operation
  93    OrderResult Res;
  94
  95    public:
  96
  97    // Main action members
  98    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
  99                     pkgRecords *Recs);
 100
 101    // Do the installation
 102    OrderResult DoInstall(APT::Progress::PackageManager *progress);
 103
 104    // compat
 105    OrderResult DoInstall(int statusFd=-1) {
 106       APT::Progress::PackageManager *progress = new
 107          APT::Progress::PackageManagerProgressFd(statusFd);
 108       OrderResult res = DoInstall(progress);
 109       delete progress;
 110       return res;
 111    }
 112
 113
 114    // stuff that needs to be done before the fork() of a library that
 115    // uses apt
 116    OrderResult DoInstallPreFork() {
 117       Res = OrderInstall();
 118       return Res;
 119    };
 120
 121    // stuff that needs to be done after the fork
 122    OrderResult DoInstallPostFork(APT::Progress::PackageManager *progress);
 123    bool FixMissing();
 124
 125    /** \brief returns all packages dpkg let disappear */
 126    inline std::set<std::string> GetDisappearedPackages() { return disappearedPkgs; };
 127
 128    pkgPackageManager(pkgDepCache *Cache);
 129    virtual ~pkgPackageManager();
 130 };
 131
 132 #endif