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