Another -a attempt

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

diff --git a/apt-pkg/algorithms.h b/apt-pkg/algorithms.h
index d6078b2cb48af340f4b6785d7430ce96cc9ad491..0553b3eec9d535cec3933893a6054d1cdc3d6568 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 1.6 1998/10/20 02:39:18 jgg Exp $

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


@@ -14,7 +14,17 @@
    
    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
    ##################################################################### */
                                                                        /*}}}*/
 // Header section: pkglib


@@ -58,7 +68,8 @@ 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 +90,23 @@ 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;};
+
+   // Try to intelligently resolve problems by installing and removing packages   

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

+   // Try to resolve problems only by using keep
+   bool ResolveByKeep();
+   
+   void InstallProtect();   
+   

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

+bool pkgAllUpgrade(pkgDepCache &Cache);
+bool pkgMinimizeUpgrade(pkgDepCache &Cache);

 
 #endif
 
 #endif