* Removed the more leftover #pragma interface/implementation
[ntk/apt.git] / apt-pkg / algorithms.cc
index 3ac9821..b21fcbb 100644 (file)
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/version.h>
 #include <apt-pkg/sptr.h>
+
     
 #include <apti18n.h>
-    
+#include <sys/types.h>
+#include <cstdlib>
+#include <algorithm>
 #include <iostream>
                                                                        /*}}}*/
 using namespace std;
@@ -97,6 +101,7 @@ bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
         DepIterator End;
         D.GlobOr(Start,End);
         if (Start->Type == pkgCache::Dep::Conflicts ||
+            Start->Type == pkgCache::Dep::DpkgBreaks ||
             Start->Type == pkgCache::Dep::Obsoletes ||
             End->Type == pkgCache::Dep::PreDepends)
          {
@@ -146,6 +151,8 @@ bool pkgSimulate::Configure(PkgIterator iPkg)
            cout << " Obsoletes:" << D.TargetPkg().Name();
         else if (D->Type == pkgCache::Dep::Conflicts)
            cout << " Conflicts:" << D.TargetPkg().Name();
+        else if (D->Type == pkgCache::Dep::DpkgBreaks)
+           cout << " Breaks:" << D.TargetPkg().Name();
         else
            cout << " Depends:" << D.TargetPkg().Name();
       }            
@@ -217,6 +224,8 @@ void pkgSimulate::ShortBreaks()
    the necessary calculations to deal with the problems. */
 bool pkgApplyStatus(pkgDepCache &Cache)
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    {
       if (I->VersionList == 0)
@@ -227,13 +236,13 @@ bool pkgApplyStatus(pkgDepCache &Cache)
          I->InstState == pkgCache::State::HoldReInstReq)
       {
         if (I->CurrentVer != 0 && I.CurrentVer().Downloadable() == true)
-           Cache.MarkKeep(I);
+           Cache.MarkKeep(I, false, false);
         else
         {
            // Is this right? Will dpkg choke on an upgrade?
            if (Cache[I].CandidateVer != 0 &&
                 Cache[I].CandidateVerIter(Cache).Downloadable() == true)
-              Cache.MarkInstall(I);
+              Cache.MarkInstall(I, false, 0, false);
            else
               return _error->Error(_("The package %s needs to be reinstalled, "
                                    "but I can't find an archive for it."),I.Name());
@@ -250,12 +259,12 @@ bool pkgApplyStatus(pkgDepCache &Cache)
         case pkgCache::State::HalfConfigured:
         if ((I->CurrentVer != 0 && I.CurrentVer().Downloadable() == true) ||
             I.State() != pkgCache::PkgIterator::NeedsUnpack)
-           Cache.MarkKeep(I);
+           Cache.MarkKeep(I, false, false);
         else
         {
            if (Cache[I].CandidateVer != 0 &&
                 Cache[I].CandidateVerIter(Cache).Downloadable() == true)
-              Cache.MarkInstall(I);
+              Cache.MarkInstall(I, true, 0, false);
            else
               Cache.MarkDelete(I);
         }
@@ -281,10 +290,12 @@ bool pkgApplyStatus(pkgDepCache &Cache)
    on the result. */
 bool pkgFixBroken(pkgDepCache &Cache)
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    // Auto upgrade all broken packages
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
       if (Cache[I].NowBroken() == true)
-        Cache.MarkInstall(I,true);
+        Cache.MarkInstall(I, true, 0, false);
    
    /* Fix packages that are in a NeedArchive state but don't have a
       downloadable install version */
@@ -297,7 +308,7 @@ bool pkgFixBroken(pkgDepCache &Cache)
       if (Cache[I].InstVerIter(Cache).Downloadable() == false)
         continue;
 
-      Cache.MarkInstall(I,true);      
+      Cache.MarkInstall(I, true, 0, false);
    }
    
    pkgProblemResolver Fix(&Cache);
@@ -314,23 +325,25 @@ bool pkgFixBroken(pkgDepCache &Cache)
  */
 bool pkgDistUpgrade(pkgDepCache &Cache)
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    /* Auto upgrade all installed packages, this provides the basis 
       for the installation */
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
       if (I->CurrentVer != 0)
-        Cache.MarkInstall(I,true);
+        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);
+        Cache.MarkInstall(I, true, 0, false);
    
    /* We do it again over all previously installed packages to force 
       conflict resolution on them all. */
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
       if (I->CurrentVer != 0)
-        Cache.MarkInstall(I,false);
+        Cache.MarkInstall(I, false, 0, false);
 
    pkgProblemResolver Fix(&Cache);
 
@@ -342,7 +355,7 @@ bool pkgDistUpgrade(pkgDepCache &Cache)
         if (I->SelectedState == pkgCache::State::Hold)
         {
            Fix.Protect(I);
-           Cache.MarkKeep(I);
+           Cache.MarkKeep(I, false, false);
         }
       }
    }
@@ -357,6 +370,8 @@ bool pkgDistUpgrade(pkgDepCache &Cache)
    to install packages not marked for install */
 bool pkgAllUpgrade(pkgDepCache &Cache)
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    pkgProblemResolver Fix(&Cache);
 
    if (Cache.BrokenCount() != 0)
@@ -373,7 +388,7 @@ bool pkgAllUpgrade(pkgDepCache &Cache)
            continue;
       
       if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
-        Cache.MarkInstall(I,false);
+        Cache.MarkInstall(I, false, 0, false);
    }
       
    return Fix.ResolveByKeep();
@@ -386,6 +401,8 @@ bool pkgAllUpgrade(pkgDepCache &Cache)
    the package is restored. */
 bool pkgMinimizeUpgrade(pkgDepCache &Cache)
 {   
+   pkgDepCache::ActionGroup group(Cache);
+
    if (Cache.BrokenCount() != 0)
       return false;
    
@@ -402,9 +419,9 @@ bool pkgMinimizeUpgrade(pkgDepCache &Cache)
            continue;
 
         // Keep it and see if that is OK
-        Cache.MarkKeep(I);
+        Cache.MarkKeep(I, false, false);
         if (Cache.BrokenCount() != 0)
-           Cache.MarkInstall(I,false);
+           Cache.MarkInstall(I, false, 0, false);
         else
         {
            // If keep didnt actually do anything then there was no change..
@@ -491,8 +508,10 @@ void pkgProblemResolver::MakeScores()
         Score += PrioMap[Cache[I].InstVerIter(Cache)->Priority];
       
       /* This helps to fix oddball problems with conflicting packages
-         on the same level. We enhance the score of installed packages */
-      if (I->CurrentVer != 0)
+         on the same level. We enhance the score of installed packages 
+        if those are not obsolete
+      */
+      if (I->CurrentVer != 0 && Cache[I].CandidateVer != 0 && Cache[I].CandidateVerIter(Cache).Downloadable())
         Score += 1;
    }
 
@@ -562,6 +581,8 @@ void pkgProblemResolver::MakeScores()
    installable */
 bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    if ((Flags[Pkg->ID] & Upgradable) == 0 || Cache[Pkg].Upgradable() == false)
       return false;
    if ((Flags[Pkg->ID] & Protected) == Protected)
@@ -570,7 +591,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
    Flags[Pkg->ID] &= ~Upgradable;
    
    bool WasKept = Cache[Pkg].Keep();
-   Cache.MarkInstall(Pkg,false);
+   Cache.MarkInstall(Pkg, false, 0, false);
 
    // This must be a virtual package or something like that.
    if (Cache[Pkg].InstVerIter(Cache).end() == true)
@@ -634,6 +655,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
               /* We let the algorithm deal with conflicts on its next iteration,
                it is much smarter than us */
               if (Start->Type == pkgCache::Dep::Conflicts || 
+                  Start->Type == pkgCache::Dep::DpkgBreaks || 
                   Start->Type == pkgCache::Dep::Obsoletes)
                   break;
               
@@ -655,7 +677,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
    if (Fail == true)
    {
       if (WasKept == true)
-        Cache.MarkKeep(Pkg);
+        Cache.MarkKeep(Pkg, false, false);
       else
         Cache.MarkDelete(Pkg);
       return false;
@@ -682,6 +704,8 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
    upgrade packages to advoid problems. */
 bool pkgProblemResolver::Resolve(bool BrokenFix)
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    unsigned long Size = Cache.Head().PackageCount;
 
    // Record which packages are marked for install
@@ -697,7 +721,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
         {
            if (Cache[I].InstBroken() == true && BrokenFix == true)
            {
-              Cache.MarkInstall(I,false);
+              Cache.MarkInstall(I, false, 0, false);
               if (Cache[I].Install() == true)
                  Again = true;
            }
@@ -763,14 +787,14 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            pkgCache::Version *OldVer = Cache[I].InstallVer;
            Flags[I->ID] &= ReInstateTried;
            
-           Cache.MarkInstall(I,false);
+           Cache.MarkInstall(I, false, 0, false);
            if (Cache[I].InstBroken() == true || 
                OldBreaks < Cache.BrokenCount())
            {
               if (OldVer == 0)
                  Cache.MarkDelete(I);
               else
-                 Cache.MarkKeep(I);
+                 Cache.MarkKeep(I, false, false);
            }       
            else
               if (Debug == true)
@@ -781,7 +805,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            continue;
         
         if (Debug == true)
-           cout << "Investigating " << I.Name() << endl;
+           clog << "Investigating " << I.Name() << endl;
         
         // Isolate the problem dependency
         PackageKill KillList[100];
@@ -815,7 +839,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                  {
                     if (Debug == true)
                        clog << "  Or group keep for " << I.Name() << endl;
-                    Cache.MarkKeep(I);
+                    Cache.MarkKeep(I, false, false);
                     Change = true;
                  }
               }
@@ -836,7 +860,12 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               OldEnd = LEnd;
            }
            else
+            {
               Start++;
+              // We only worry about critical deps.
+              if (Start.IsCritical() != true)
+                  continue;
+            }
 
            // Dep is ok
            if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
@@ -854,6 +883,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
            if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
                Start->Type != pkgCache::Dep::Conflicts &&
+               Start->Type != pkgCache::Dep::DpkgBreaks &&
                Start->Type != pkgCache::Dep::Obsoletes &&
                Cache[I].NowBroken() == false)
            {          
@@ -865,7 +895,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               }
               
               Change = true;
-              Cache.MarkKeep(I);                 
+              Cache.MarkKeep(I, false, false);
               break;
            }
            
@@ -884,6 +914,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               if (Scores[I->ID] <= Scores[Pkg->ID] ||
                   ((Cache[Start] & pkgDepCache::DepNow) == 0 &&
                    End->Type != pkgCache::Dep::Conflicts &&
+                   End->Type != pkgCache::Dep::DpkgBreaks &&
                    End->Type != pkgCache::Dep::Obsoletes))
               {
                  // Try a little harder to fix protected packages..
@@ -902,7 +933,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                  /* See if a keep will do, unless the package is protected,
                     then installing it will be necessary */
                  bool Installed = Cache[I].Install();
-                 Cache.MarkKeep(I);
+                 Cache.MarkKeep(I, false, false);
                  if (Cache[I].InstBroken() == false)
                  {
                     // Unwind operation will be keep now
@@ -911,7 +942,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                     
                     // Restore
                     if (InOr == true && Installed == true)
-                       Cache.MarkInstall(I,false);
+                       Cache.MarkInstall(I, false, 0, false);
                     
                     if (Debug == true)
                        clog << "  Holding Back " << I.Name() << " rather than change " << Start.TargetPkg().Name() << endl;
@@ -949,7 +980,22 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                      (Start->Type == pkgCache::Dep::Conflicts ||
                       Start->Type == pkgCache::Dep::Obsoletes))
                     continue;
-                 
+
+                 if (Start->Type == pkgCache::Dep::DpkgBreaks)
+                 {
+                    /* Would it help if we upgraded? */
+                    if (Cache[End] & pkgDepCache::DepGCVer) {
+                       if (Debug)
+                          clog << "  Upgrading " << Pkg.Name() << " due to Breaks field in " << I.Name() << endl;
+                       Cache.MarkInstall(Pkg, false, 0, false);
+                       continue;
+                    }
+                    if (Debug)
+                       clog << "  Will not break " << Pkg.Name() << " as stated in Breaks field in " << I.Name() <<endl;
+                    Cache.MarkKeep(I, false, false);
+                    continue;
+                 }
+
                  // Skip adding to the kill list if it is protected
                  if ((Flags[Pkg->ID] & Protected) != 0)
                     continue;
@@ -970,6 +1016,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            // Hm, nothing can possibly satisify this dep. Nuke it.
            if (VList[0] == 0 && 
                Start->Type != pkgCache::Dep::Conflicts &&
+               Start->Type != pkgCache::Dep::DpkgBreaks &&
                Start->Type != pkgCache::Dep::Obsoletes &&
                (Flags[I->ID] & Protected) != Protected)
            {
@@ -983,7 +1030,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                  
                  // Restore
                  if (InOr == true && Installed == true)
-                    Cache.MarkInstall(I,false);
+                    Cache.MarkInstall(I, false, 0, false);
                  
                  if (Debug == true)
                     clog << "  Holding Back " << I.Name() << " because I can't find " << Start.TargetPkg().Name() << endl;
@@ -1028,7 +1075,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               {
                  if (Debug == true)
                     clog << "  Fixing " << I.Name() << " via keep of " << J->Pkg.Name() << endl;
-                 Cache.MarkKeep(J->Pkg);
+                 Cache.MarkKeep(J->Pkg, false, false);
               }
 
               if (Counter > 1)
@@ -1058,6 +1105,20 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
       return _error->Error(_("Unable to correct problems, you have held broken packages."));
    }
    
+   // set the auto-flags (mvo: I'm not sure if we _really_ need this, but
+   // I didn't managed 
+   pkgCache::PkgIterator I = Cache.PkgBegin();
+   for (;I.end() != true; I++) {
+      if (Cache[I].NewInstall() && !(Flags[I->ID] & PreInstalled)) {
+        if(_config->FindI("Debug::pkgAutoRemove",false)) {
+           std::clog << "Resolve installed new pkg: " << I.Name() 
+                     << " (now marking it as auto)" << std::endl;
+        }
+        Cache[I].Flags |= pkgCache::Flag::Auto;
+      }
+   }
+
+
    return true;
 }
                                                                        /*}}}*/
@@ -1068,6 +1129,8 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
    system was non-broken previously. */
 bool pkgProblemResolver::ResolveByKeep()
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    unsigned long Size = Cache.Head().PackageCount;
 
    if (Debug == true)      
@@ -1101,7 +1164,7 @@ bool pkgProblemResolver::ResolveByKeep()
       {
         if (Debug == true)
            clog << "Keeping package " << I.Name() << endl;
-        Cache.MarkKeep(I);
+        Cache.MarkKeep(I, false, false);
         if (Cache[I].InstBroken() == false)
         {
            K = PList - 1;
@@ -1149,7 +1212,7 @@ bool pkgProblemResolver::ResolveByKeep()
               {
                  if (Debug == true)
                     clog << "  Keeping Package " << Pkg.Name() << " due to dep" << endl;
-                 Cache.MarkKeep(Pkg);
+                 Cache.MarkKeep(Pkg, false, false);
               }
               
               if (Cache[I].InstBroken() == false)
@@ -1186,14 +1249,21 @@ bool pkgProblemResolver::ResolveByKeep()
 /* This is used to make sure protected packages are installed */
 void pkgProblemResolver::InstallProtect()
 {
+   pkgDepCache::ActionGroup group(Cache);
+
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    {
       if ((Flags[I->ID] & Protected) == Protected)
       {
         if ((Flags[I->ID] & ToRemove) == ToRemove)
            Cache.MarkDelete(I);
-        else
-           Cache.MarkInstall(I,false);
+        else 
+        {
+           // preserver the information if the package was auto
+           // or manual installed
+           bool autoInst = (Cache[I].Flags & pkgCache::Flag::Auto);
+           Cache.MarkInstall(I, false, 0, !autoInst);
+        }
       }
    }   
 }
@@ -1229,3 +1299,4 @@ void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List)
    qsort(List,Count,sizeof(*List),PrioComp);
 }
                                                                        /*}}}*/
+