]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/algorithms.cc
* apt-inst/deb/debfile.h:
[apt.git] / apt-pkg / algorithms.cc
index 919daefef1d044427b322d3166b87340d4d1350e..e7b35998140929b4589218cf3838cb7ae91815a0 100644 (file)
@@ -471,11 +471,11 @@ bool pkgMinimizeUpgrade(pkgDepCache &Cache)
 // ProblemResolver::pkgProblemResolver - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgProblemResolver::pkgProblemResolver(pkgDepCache *pCache) : Cache(*pCache)
+pkgProblemResolver::pkgProblemResolver(pkgDepCache *pCache) : d(NULL), Cache(*pCache)
 {
    // Allocate memory
    unsigned long Size = Cache.Head().PackageCount;
-   Scores = new signed short[Size];
+   Scores = new int[Size];
    Flags = new unsigned char[Size];
    memset(Flags,0,sizeof(*Flags)*Size);
    
@@ -515,20 +515,20 @@ void pkgProblemResolver::MakeScores()
    memset(Scores,0,sizeof(*Scores)*Size);
 
    // Important Required Standard Optional Extra
-   signed short PrioMap[] = {
+   int PrioMap[] = {
       0,
-      (signed short) _config->FindI("pkgProblemResolver::Scores::Important",3),
-      (signed short) _config->FindI("pkgProblemResolver::Scores::Required",2),
-      (signed short) _config->FindI("pkgProblemResolver::Scores::Standard",1),
-      (signed short) _config->FindI("pkgProblemResolver::Scores::Optional",-1),
-      (signed short) _config->FindI("pkgProblemResolver::Scores::Extra",-2)
+      _config->FindI("pkgProblemResolver::Scores::Important",3),
+      _config->FindI("pkgProblemResolver::Scores::Required",2),
+      _config->FindI("pkgProblemResolver::Scores::Standard",1),
+      _config->FindI("pkgProblemResolver::Scores::Optional",-1),
+      _config->FindI("pkgProblemResolver::Scores::Extra",-2)
    };
-   signed short PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
-   signed short PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
-   signed short PrioDepends = _config->FindI("pkgProblemResolver::Scores::Depends",1);
-   signed short PrioRecommends = _config->FindI("pkgProblemResolver::Scores::Recommends",1);
-   signed short AddProtected = _config->FindI("pkgProblemResolver::Scores::AddProtected",10000);
-   signed short AddEssential = _config->FindI("pkgProblemResolver::Scores::AddEssential",5000);
+   int PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
+   int PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
+   int PrioDepends = _config->FindI("pkgProblemResolver::Scores::Depends",1);
+   int PrioRecommends = _config->FindI("pkgProblemResolver::Scores::Recommends",1);
+   int AddProtected = _config->FindI("pkgProblemResolver::Scores::AddProtected",10000);
+   int AddEssential = _config->FindI("pkgProblemResolver::Scores::AddEssential",5000);
 
    if (_config->FindB("Debug::pkgProblemResolver::ShowScores",false) == true)
       clog << "Settings used to calculate pkgProblemResolver::Scores::" << endl
@@ -550,13 +550,14 @@ void pkgProblemResolver::MakeScores()
       if (Cache[I].InstallVer == 0)
         continue;
       
-      signed short &Score = Scores[I->ID];
+      int &Score = Scores[I->ID];
       
       /* This is arbitrary, it should be high enough to elevate an
          essantial package above most other packages but low enough
         to allow an obsolete essential packages to be removed by
         a conflicts on a powerfull normal package (ie libc6) */
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential
+         || (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
         Score += PrioEssentials;
 
       // We transform the priority
@@ -588,7 +589,7 @@ void pkgProblemResolver::MakeScores()
    }   
    
    // Copy the scores to advoid additive looping
-   SPtrArray<signed short> OldScores = new signed short[Size];
+   SPtrArray<int> OldScores = new int[Size];
    memcpy(OldScores,Scores,sizeof(*Scores)*Size);
       
    /* Now we cause 1 level of dependency inheritance, that is we add the 
@@ -631,7 +632,8 @@ void pkgProblemResolver::MakeScores()
    {
       if ((Flags[I->ID] & Protected) != 0)
         Scores[I->ID] += AddProtected;
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential ||
+          (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
         Scores[I->ID] += AddEssential;
    }
 }
@@ -1035,7 +1037,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                     if (BrokenFix == false || DoUpgrade(I) == false)
                     {
                        // Consider other options
-                       if (InOr == false)
+                       if (InOr == false || Cache[I].Garbage == true)
                        {
                           if (Debug == true)
                              clog << "  Removing " << I.FullName(false) << " rather than change " << Start.TargetPkg().FullName(false) << endl;
@@ -1098,8 +1100,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                  LEnd->Dep = End;
                  LEnd++;
                  
-                 if (Start->Type != pkgCache::Dep::Conflicts &&
-                     Start->Type != pkgCache::Dep::Obsoletes)
+                 if (Start.IsNegative() == false)
                     break;
               }
            }
@@ -1209,7 +1210,6 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
    return true;
 }
                                                                        /*}}}*/
-
 // ProblemResolver::BreaksInstOrPolicy - Check if the given pkg is broken/*{{{*/
 // ---------------------------------------------------------------------
 /* This checks if the given package is broken either by a hard dependency
@@ -1221,19 +1221,26 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
 */
 bool pkgProblemResolver::InstOrNewPolicyBroken(pkgCache::PkgIterator I)
 {
-   
    // a broken install is always a problem
    if (Cache[I].InstBroken() == true)
+   {
+      if (Debug == true)
+        std::clog << "  Dependencies are not satisfied for " << I << std::endl;
       return true;
+   }
 
    // a newly broken policy (recommends/suggests) is a problem
    if (Cache[I].NowPolicyBroken() == false &&
        Cache[I].InstPolicyBroken() == true)
+   {
+      if (Debug == true)
+        std::clog << "  Policy breaks with upgrade of " << I << std::endl;
       return true;
-       
+   }
+
    return false;
 }
-
+                                                                       /*}}}*/
 // ProblemResolver::ResolveByKeep - Resolve problems using keep                /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the work horse of the soft upgrade routine. It is very gental 
@@ -1425,6 +1432,13 @@ static int PrioComp(const void *A,const void *B)
    if ((L.ParentPkg()->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential &&
        (R.ParentPkg()->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
      return -1;
+
+   if ((L.ParentPkg()->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important &&
+       (R.ParentPkg()->Flags & pkgCache::Flag::Important) != pkgCache::Flag::Important)
+     return 1;
+   if ((L.ParentPkg()->Flags & pkgCache::Flag::Important) != pkgCache::Flag::Important &&
+       (R.ParentPkg()->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
+     return -1;
    
    if (L->Priority != R->Priority)
       return R->Priority - L->Priority;
@@ -1439,7 +1453,7 @@ void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List)
    qsort(List,Count,sizeof(*List),PrioComp);
 }
                                                                        /*}}}*/
-// CacheFile::ListUpdate - update the cache files                      /*{{{*/
+// ListUpdate - construct Fetcher and update the cache files           /*{{{*/
 // ---------------------------------------------------------------------
 /* This is a simple wrapper to update the cache. it will fetch stuff
  * from the network (or any other sources defined in sources.list)
@@ -1448,7 +1462,6 @@ bool ListUpdate(pkgAcquireStatus &Stat,
                pkgSourceList &List, 
                int PulseInterval)
 {
-   pkgAcquire::RunResult res;
    pkgAcquire Fetcher;
    if (Fetcher.Setup(&Stat, _config->FindDir("Dir::State::Lists")) == false)
       return false;
@@ -1457,11 +1470,24 @@ bool ListUpdate(pkgAcquireStatus &Stat,
    if (List.GetIndexes(&Fetcher) == false)
         return false;
 
+   return AcquireUpdate(Fetcher, PulseInterval, true);
+}
+                                                                       /*}}}*/
+// AcquireUpdate - take Fetcher and update the cache files             /*{{{*/
+// ---------------------------------------------------------------------
+/* This is a simple wrapper to update the cache with a provided acquire
+ * If you only need control over Status and the used SourcesList use
+ * ListUpdate method instead.
+ */
+bool AcquireUpdate(pkgAcquire &Fetcher, int const PulseInterval,
+                  bool const RunUpdateScripts, bool const ListCleanup)
+{
    // Run scripts
-   RunScripts("APT::Update::Pre-Invoke");
-   
-   // check arguments
-   if(PulseInterval>0)
+   if (RunUpdateScripts == true)
+      RunScripts("APT::Update::Pre-Invoke");
+
+   pkgAcquire::RunResult res;
+   if(PulseInterval > 0)
       res = Fetcher.Run(PulseInterval);
    else
       res = Fetcher.Run();
@@ -1498,7 +1524,7 @@ bool ListUpdate(pkgAcquireStatus &Stat,
    // Clean out any old list files
    // Keep "APT::Get::List-Cleanup" name for compatibility, but
    // this is really a global option for the APT library now
-   if (!TransientNetworkFailure && !Failed &&
+   if (!TransientNetworkFailure && !Failed && ListCleanup == true &&
        (_config->FindB("APT::Get::List-Cleanup",true) == true &&
        _config->FindB("APT::List-Cleanup",true) == true))
    {
@@ -1515,11 +1541,14 @@ bool ListUpdate(pkgAcquireStatus &Stat,
 
 
    // Run the success scripts if all was fine
-   if(!TransientNetworkFailure && !Failed)
-      RunScripts("APT::Update::Post-Invoke-Success");
+   if (RunUpdateScripts == true)
+   {
+      if(!TransientNetworkFailure && !Failed)
+        RunScripts("APT::Update::Post-Invoke-Success");
 
-   // Run the other scripts
-   RunScripts("APT::Update::Post-Invoke");
+      // Run the other scripts
+      RunScripts("APT::Update::Post-Invoke");
+   }
    return true;
 }
                                                                        /*}}}*/