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