]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/algorithms.cc
support \n and \r\n line endings in ReadMessages
[apt.git] / apt-pkg / algorithms.cc
index ed3534f0d607e6a9e4e647394771c30634fc50e0..d19783983c04dcbbe4dedc41a9a7d7a0ac402518 100644 (file)
@@ -58,6 +58,12 @@ pkgSimulate::pkgSimulate(pkgDepCache *Cache) : pkgPackageManager(Cache),
       FileNames[I] = Jnk;
 }
                                                                        /*}}}*/
+// Simulate::~Simulate - Destructor                                    /*{{{*/
+pkgSimulate::~pkgSimulate()
+{
+   delete[] Flags;
+}
+                                                                       /*}}}*/
 // Simulate::Describe - Describe a package                             /*{{{*/
 // ---------------------------------------------------------------------
 /* Parameter Current == true displays the current package version,
@@ -188,6 +194,11 @@ bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)
 {
    // Adapt the iterator
    PkgIterator Pkg = Sim.FindPkg(iPkg.Name(), iPkg.Arch());
+   if (Pkg.end() == true)
+   {
+      std::cerr << (Purge ? "Purg" : "Remv") << " invalid package " << iPkg.FullName() << std::endl;
+      return false;
+   }
 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
@@ -276,13 +287,13 @@ bool pkgApplyStatus(pkgDepCache &Cache)
                 Cache[I].CandidateVerIter(Cache).Downloadable() == true)
               Cache.MarkInstall(I, true, 0, false);
            else
-              Cache.MarkDelete(I);
+              Cache.MarkDelete(I, false, 0, false);
         }
         break;
 
         // This means removal failed
         case pkgCache::State::HalfInstalled:
-        Cache.MarkDelete(I);
+        Cache.MarkDelete(I, false, 0, false);
         break;
         
         default:
@@ -356,11 +367,36 @@ bool pkgDistUpgrade(pkgDepCache &Cache)
       if (I->CurrentVer != 0)
         Cache.MarkInstall(I, true, 0, false);
 
-   /* Now, auto upgrade all essential packages - this ensures that
-      the essential packages are present and working */
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
-        Cache.MarkInstall(I, true, 0, false);
+   /* Now, install each essential package which is not installed
+      (and not provided by another package in the same name group) */
+   std::string essential = _config->Find("pkgCacheGen::Essential", "all");
+   if (essential == "all")
+   {
+      for (pkgCache::GrpIterator G = Cache.GrpBegin(); G.end() == false; ++G)
+      {
+        bool isEssential = false;
+        bool instEssential = false;
+        for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
+        {
+           if ((P->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
+              continue;
+           isEssential = true;
+           if (Cache[P].Install() == true)
+           {
+              instEssential = true;
+              break;
+           }
+        }
+        if (isEssential == false || instEssential == true)
+           continue;
+        pkgCache::PkgIterator P = G.FindPreferredPkg();
+        Cache.MarkInstall(P, true, 0, false);
+      }
+   }
+   else if (essential != "none")
+      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+        if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+           Cache.MarkInstall(I, true, 0, false);
    
    /* We do it again over all previously installed packages to force 
       conflict resolution on them all. */
@@ -514,11 +550,14 @@ void pkgProblemResolver::MakeScores()
    unsigned long Size = Cache.Head().PackageCount;
    memset(Scores,0,sizeof(*Scores)*Size);
 
-   // Important Required Standard Optional Extra
+   // Maps to pkgCache::State::VerPriority
+   //   which is "Important Required Standard Optional Extra"
+   // (yes, that is confusing, the order of pkgCache::State::VerPriority
+   //  needs to be adjusted but that requires a ABI break)
    int PrioMap[] = {
       0,
-      _config->FindI("pkgProblemResolver::Scores::Important",3),
-      _config->FindI("pkgProblemResolver::Scores::Required",2),
+      _config->FindI("pkgProblemResolver::Scores::Important",2),
+      _config->FindI("pkgProblemResolver::Scores::Required",3),
       _config->FindI("pkgProblemResolver::Scores::Standard",1),
       _config->FindI("pkgProblemResolver::Scores::Optional",-1),
       _config->FindI("pkgProblemResolver::Scores::Extra",-2)
@@ -532,11 +571,11 @@ void pkgProblemResolver::MakeScores()
 
    if (_config->FindB("Debug::pkgProblemResolver::ShowScores",false) == true)
       clog << "Settings used to calculate pkgProblemResolver::Scores::" << endl
-         << "  Important => " << PrioMap[1] << endl
-         << "  Required => " << PrioMap[2] << endl
-         << "  Standard => " << PrioMap[3] << endl
-         << "  Optional => " << PrioMap[4] << endl
-         << "  Extra => " << PrioMap[5] << endl
+         << "  Required => " << PrioMap[pkgCache::State::Required] << endl
+         << "  Important => " << PrioMap[pkgCache::State::Important] << endl
+         << "  Standard => " << PrioMap[pkgCache::State::Standard] << endl
+         << "  Optional => " << PrioMap[pkgCache::State::Optional] << endl
+         << "  Extra => " << PrioMap[pkgCache::State::Extra] << endl
          << "  Essentials => " << PrioEssentials << endl
          << "  InstalledAndNotObsolete => " << PrioInstalledAndNotObsolete << endl
          << "  Depends => " << PrioDepends << endl
@@ -556,7 +595,8 @@ void pkgProblemResolver::MakeScores()
          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
@@ -608,7 +648,10 @@ void pkgProblemResolver::MakeScores()
              D->Type != pkgCache::Dep::Recommends))
            continue;    
         
-        Scores[I->ID] += abs(OldScores[D.ParentPkg()->ID]);
+        // Do not propagate negative scores otherwise
+        // an extra (-2) package might score better than an optional (-1)
+        if (OldScores[D.ParentPkg()->ID] > 0)
+            Scores[I->ID] += OldScores[D.ParentPkg()->ID];
       }      
    }
 
@@ -631,7 +674,8 @@ 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;
    }
 }
@@ -736,7 +780,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
       if (WasKept == true)
         Cache.MarkKeep(Pkg, false, false);
       else
-        Cache.MarkDelete(Pkg);
+        Cache.MarkDelete(Pkg, false, 0, false);
       return false;
    }    
    
@@ -865,7 +909,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                OldBreaks < Cache.BrokenCount())
            {
               if (OldVer == 0)
-                 Cache.MarkDelete(I);
+                 Cache.MarkDelete(I, false, 0, false);
               else
                  Cache.MarkKeep(I, false, false);
            }       
@@ -904,7 +948,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                     {
                        if (Debug == true)
                           clog << "  Or group remove for " << I.FullName(false) << endl;
-                       Cache.MarkDelete(I);
+                       Cache.MarkDelete(I, false, 0, false);
                        Change = true;
                     }
                  }
@@ -1039,7 +1083,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                        {
                           if (Debug == true)
                              clog << "  Removing " << I.FullName(false) << " rather than change " << Start.TargetPkg().FullName(false) << endl;
-                          Cache.MarkDelete(I);
+                          Cache.MarkDelete(I, false, 0, false);
                           if (Counter > 1 && Scores[Pkg->ID] > Scores[I->ID])
                              Scores[I->ID] = Scores[Pkg->ID];
                        }
@@ -1128,7 +1172,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                  if (Debug == true)
                     clog << "  Removing " << I.FullName(false) << " because I can't find " << Start.TargetPkg().FullName(false) << endl;
                  if (InOr == false)
-                    Cache.MarkDelete(I);
+                    Cache.MarkDelete(I, false, 0, false);
               }
 
               Change = true;
@@ -1155,7 +1199,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                  {
                     if (Debug == true)
                        clog << "  Fixing " << I.FullName(false) << " via remove of " << J->Pkg.FullName(false) << endl;
-                    Cache.MarkDelete(J->Pkg);
+                    Cache.MarkDelete(J->Pkg, false, 0, false);
                  }
               }
               else
@@ -1381,18 +1425,26 @@ bool pkgProblemResolver::ResolveByKeepInternal()
         continue;
       
       // Restart again.
-      if (K == LastStop)
-        return _error->Error("Internal Error, pkgProblemResolver::ResolveByKeep is looping on package %s.",I.FullName(false).c_str());
+      if (K == LastStop) {
+          // I is an iterator based off our temporary package list,
+          // so copy the name we need before deleting the temporary list
+          std::string const LoopingPackage = I.FullName(false);
+          delete[] PList;
+          return _error->Error("Internal Error, pkgProblemResolver::ResolveByKeep is looping on package %s.", LoopingPackage.c_str());
+      }
       LastStop = K;
       K = PList - 1;
-   }   
+   }
 
+   delete[] PList;
    return true;
 }
                                                                        /*}}}*/
-// ProblemResolver::InstallProtect - Install all protected packages    /*{{{*/
+// ProblemResolver::InstallProtect - deprecated cpu-eating no-op       /*{{{*/
 // ---------------------------------------------------------------------
-/* This is used to make sure protected packages are installed */
+/* Actions issued with FromUser bit set are protected from further
+   modification (expect by other calls with FromUser set) nowadays , so we
+   don't need to reissue actions here, they are already set in stone. */
 void pkgProblemResolver::InstallProtect()
 {
    pkgDepCache::ActionGroup group(Cache);
@@ -1430,6 +1482,13 @@ 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;
@@ -1444,7 +1503,7 @@ void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List)
    qsort(List,Count,sizeof(*List),PrioComp);
 }
                                                                        /*}}}*/
-// 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)
@@ -1453,7 +1512,6 @@ 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;
@@ -1462,11 +1520,24 @@ 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();
@@ -1503,7 +1574,7 @@ 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))
    {
@@ -1520,11 +1591,14 @@ 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;
 }
                                                                        /*}}}*/