apt-pkg/packagemanager.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4
   5    Package Manager - Abstacts the package manager
   6
   7    Three steps are
   8      - Aquiration of archives (stores the list of final file names)
   9      - Sorting of operations
  10      - Invokation of package manager
  11
  12    This is the final stage when the package cache entities get converted
  13    into file names and the state stored in a DepCache is transformed
  14    into a series of operations.
  15
  16    In the final scheme of things this may serve as a director class to
  17    access the actual install methods based on the file type being
  18    installed.
  19
  20    ##################################################################### */
  21                                                                         /*}}}*/
  22 #ifndef PKGLIB_PACKAGEMANAGER_H
  23 #define PKGLIB_PACKAGEMANAGER_H
  24
  25 #include <apt-pkg/pkgcache.h>
  26 #include <apt-pkg/init.h>
  27 #include <apt-pkg/macros.h>
  28
  29 #include <string>
  30 #include <set>
  31
  32 #ifndef APT_10_CLEANER_HEADERS
  33 #include <apt-pkg/install-progress.h>
  34 #include <iostream>
  35 #endif
  36 #ifndef APT_8_CLEANER_HEADERS
  37 #include <apt-pkg/depcache.h>
  38 using std::string;
  39 #endif
  40
  41 class pkgAcquire;
  42 class pkgDepCache;
  43 class pkgSourceList;
  44 class pkgOrderList;
  45 class pkgRecords;
  46 namespace APT {
  47    namespace Progress {
  48       class PackageManager;
  49    }
  50 }
  51
  52
  53 class pkgPackageManager : protected pkgCache::Namespace
  54 {
  55    public:
  56
  57    enum OrderResult {Completed,Failed,Incomplete};
  58    static bool SigINTStop;
  59
  60    protected:
  61    std::string *FileNames;
  62    pkgDepCache &Cache;
  63    pkgOrderList *List;
  64    bool Debug;
  65    bool NoImmConfigure;
  66    bool ImmConfigureAll;
  67
  68    /** \brief saves packages dpkg let disappear
  69
  70        This way APT can retreat from trying to configure these
  71        packages later on and a front-end can choose to display a
  72        notice to inform the user about these disappears.
  73    */
  74    std::set<std::string> disappearedPkgs;
  75
  76    void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth = 0);
  77    virtual OrderResult OrderInstall();
  78    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  79    bool CheckRBreaks(PkgIterator const &Pkg,DepIterator Dep,const char * const Ver);
  80    bool CreateOrderList();
  81
  82    // Analysis helpers
  83    bool DepAlwaysTrue(DepIterator D) APT_PURE;
  84
  85    // Install helpers
  86    bool ConfigureAll();
  87    bool SmartConfigure(PkgIterator Pkg, int const Depth) APT_MUSTCHECK;
  88    //FIXME: merge on abi break
  89    bool SmartUnPack(PkgIterator Pkg) APT_MUSTCHECK;
  90    bool SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth) APT_MUSTCHECK;
  91    bool SmartRemove(PkgIterator Pkg) APT_MUSTCHECK;
  92    bool EarlyRemove(PkgIterator Pkg, DepIterator const * const Dep) APT_MUSTCHECK;
  93    APT_DEPRECATED bool EarlyRemove(PkgIterator Pkg) APT_MUSTCHECK;
  94
  95    // The Actual installation implementation
  96    virtual bool Install(PkgIterator /*Pkg*/,std::string /*File*/) {return false;};
  97    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
  98    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
  99    virtual bool Go(APT::Progress::PackageManager * /*progress*/) {return true;};
 100    virtual bool Go(int /*statusFd*/=-1) {return true;};
 101
 102    virtual void Reset() {};
 103
 104    // the result of the operation
 105    OrderResult Res;
 106
 107    public:
 108
 109    // Main action members
 110    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
 111                     pkgRecords *Recs);
 112
 113    // Do the installation
 114    OrderResult DoInstall(APT::Progress::PackageManager *progress);
 115    // compat
 116    APT_DEPRECATED_MSG("Use APT::Progress::PackageManager subclass instead of fd") OrderResult DoInstall(int statusFd=-1);
 117
 118    // stuff that needs to be done before the fork() of a library that
 119    // uses apt
 120    OrderResult DoInstallPreFork() {
 121       Res = OrderInstall();
 122       return Res;
 123    };
 124    // stuff that needs to be done after the fork
 125    OrderResult DoInstallPostFork(APT::Progress::PackageManager *progress);
 126    // compat
 127    APT_DEPRECATED_MSG("Use APT::Progress::PackageManager subclass instead of fd") OrderResult DoInstallPostFork(int statusFd=-1);
 128
 129    // ?
 130    bool FixMissing();
 131
 132    /** \brief returns all packages dpkg let disappear */
 133    inline std::set<std::string> GetDisappearedPackages() { return disappearedPkgs; };
 134
 135    explicit pkgPackageManager(pkgDepCache *Cache);
 136    virtual ~pkgPackageManager();
 137
 138    private:
 139    void * const d;
 140    enum APT_HIDDEN SmartAction { UNPACK_IMMEDIATE, UNPACK, CONFIGURE };
 141    APT_HIDDEN bool NonLoopingSmart(SmartAction const action, pkgCache::PkgIterator &Pkg,
 142       pkgCache::PkgIterator DepPkg, int const Depth, bool const PkgLoop,
 143       bool * const Bad, bool * const Changed) APT_MUSTCHECK;
 144 };
 145
 146 #endif