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