rewrite the pseudo package reinstaller to be more intelligent

[apt.git] / apt-pkg / algorithms.h

diff --git a/apt-pkg/algorithms.h b/apt-pkg/algorithms.h
index d6078b2cb48af340f4b6785d7430ce96cc9ad491..cee30b679f3509d00611593eac0c062b5731ab7d 100644 (file)
--- a/apt-pkg/algorithms.h
+++ b/apt-pkg/algorithms.h
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: algorithms.h,v 1.2 1998/07/12 23:58:22 jgg Exp $
+// $Id: algorithms.h,v 1.10 2001/05/22 04:17:41 jgg Exp $

 /* ######################################################################
 
    Algorithms - A set of misc algorithms
 /* ######################################################################
 
    Algorithms - A set of misc algorithms


@@ -14,40 +14,69 @@
    
    pkgApplyStatus sets the target state based on the content of the status
    field in the status file. It is important to get proper crash recovery.
    
    pkgApplyStatus sets the target state based on the content of the status
    field in the status file. It is important to get proper crash recovery.

+
+   pkgFixBroken corrects a broken system so that it is in a sane state.
+ 
+   pkgAllUpgrade attempts to upgade as many packages as possible but 
+   without installing new packages.

    
    

+   The problem resolver class contains a number of complex algorithms
+   to try to best-guess an upgrade state. It solves the problem of 
+   maximizing the number of install state packages while having no broken
+   packages. 
+

    ##################################################################### */
                                                                        /*}}}*/
    ##################################################################### */
                                                                        /*}}}*/

-// Header section: pkglib

 #ifndef PKGLIB_ALGORITHMS_H
 #define PKGLIB_ALGORITHMS_H
 
 #ifndef PKGLIB_ALGORITHMS_H
 #define PKGLIB_ALGORITHMS_H
 

-#ifdef __GNUG__
-#pragma interface "apt-pkg/algorithms.h"
-#endif 

 
 #include <apt-pkg/packagemanager.h>
 #include <apt-pkg/depcache.h>
 
 #include <apt-pkg/packagemanager.h>
 #include <apt-pkg/depcache.h>

+#include <apt-pkg/acquire.h>
+
+#include <iostream>
+
+using std::ostream;

 
 

-class pkgSimulate : public pkgPackageManager
+class pkgSimulate : public pkgPackageManager                           /*{{{*/

 {
    protected:
 
 {
    protected:
 

+   class Policy : public pkgDepCache::Policy
+   {
+      pkgDepCache *Cache;
+      public:
+      
+      virtual VerIterator GetCandidateVer(PkgIterator Pkg)
+      {
+        return (*Cache)[Pkg].CandidateVerIter(*Cache);
+      }
+      
+      Policy(pkgDepCache *Cache) : Cache(Cache) {};
+   };
+   

    unsigned char *Flags;
    
    unsigned char *Flags;
    

+   Policy iPolicy;

    pkgDepCache Sim;
    pkgDepCache Sim;

+   pkgDepCache::ActionGroup group;

    
    // The Actuall installation implementation
    virtual bool Install(PkgIterator Pkg,string File);
    virtual bool Configure(PkgIterator Pkg);
    
    // The Actuall installation implementation
    virtual bool Install(PkgIterator Pkg,string File);
    virtual bool Configure(PkgIterator Pkg);

-   virtual bool Remove(PkgIterator Pkg);
+   virtual bool Remove(PkgIterator Pkg,bool Purge);
+
+private:

    void ShortBreaks();
    void ShortBreaks();

+   void Describe(PkgIterator iPkg,ostream &out,bool Current,bool Candidate);

    
    public:
 
    
    public:
 

-   pkgSimulate(pkgDepCache &Cache);
+   pkgSimulate(pkgDepCache *Cache);

 };
 };

-
-class pkgProblemResolver
+                                                                       /*}}}*/
+class pkgProblemResolver                                               /*{{{*/

 {
    pkgDepCache &Cache;
    typedef pkgCache::PkgIterator PkgIterator;
 {
    pkgDepCache &Cache;
    typedef pkgCache::PkgIterator PkgIterator;


@@ -58,7 +87,8 @@ class pkgProblemResolver
    typedef pkgCache::Package Package;
    
    enum Flags {Protected = (1 << 0), PreInstalled = (1 << 1),
    typedef pkgCache::Package Package;
    
    enum Flags {Protected = (1 << 0), PreInstalled = (1 << 1),

-               Upgradable = (1 << 2)};
+               Upgradable = (1 << 2), ReInstateTried = (1 << 3),
+               ToRemove = (1 << 4)};

    signed short *Scores;
    unsigned char *Flags;
    bool Debug;
    signed short *Scores;
    unsigned char *Flags;
    bool Debug;


@@ -79,13 +109,30 @@ class pkgProblemResolver
    public:
    
    inline void Protect(pkgCache::PkgIterator Pkg) {Flags[Pkg->ID] |= Protected;};
    public:
    
    inline void Protect(pkgCache::PkgIterator Pkg) {Flags[Pkg->ID] |= Protected;};

+   inline void Remove(pkgCache::PkgIterator Pkg) {Flags[Pkg->ID] |= ToRemove;};
+   inline void Clear(pkgCache::PkgIterator Pkg) {Flags[Pkg->ID] &= ~(Protected | ToRemove);};
+   
+   // Try to intelligently resolve problems by installing and removing packages   

    bool Resolve(bool BrokenFix = false);
    
    bool Resolve(bool BrokenFix = false);
    

-   pkgProblemResolver(pkgDepCache &Cache);
-};
+   // Try to resolve problems only by using keep
+   bool ResolveByKeep();

 
 

+   // Install all protected packages   
+   void InstallProtect();   
+   
+   pkgProblemResolver(pkgDepCache *Cache);
+   ~pkgProblemResolver();
+};
+                                                                       /*}}}*/

 bool pkgDistUpgrade(pkgDepCache &Cache);
 bool pkgApplyStatus(pkgDepCache &Cache);
 bool pkgFixBroken(pkgDepCache &Cache);
 bool pkgDistUpgrade(pkgDepCache &Cache);
 bool pkgApplyStatus(pkgDepCache &Cache);
 bool pkgFixBroken(pkgDepCache &Cache);

+bool pkgAllUpgrade(pkgDepCache &Cache);
+bool pkgMinimizeUpgrade(pkgDepCache &Cache);
+
+void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List);

 
 

+bool ListUpdate(pkgAcquireStatus &progress, pkgSourceList &List, int PulseInterval=0);
+                    

 #endif
 #endif