Only do openpty() if both stdin/stdout are terminals

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

diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 8644a81388dfff59a409c5befc865b7c11298a95..608ec7fce2ac6dbd14d94ca4767d37aa57f31d7a 100644 (file)
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -19,19 +19,18 @@
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #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 <apt-pkg/sptr.h>

-#include <apt-pkg/acquire-item.h>

 #include <apt-pkg/edsp.h>
 #include <apt-pkg/edsp.h>

-#include <apt-pkg/sourcelist.h>
-#include <apt-pkg/fileutl.h>

 #include <apt-pkg/progress.h>
 #include <apt-pkg/progress.h>

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

 
 

-#include <sys/types.h>
+#include <string.h>
+#include <string>

 #include <cstdlib>
 #include <cstdlib>

-#include <algorithm>

 #include <iostream>
 #include <iostream>

-#include <stdio.h>

 
 #include <apti18n.h>
                                                                        /*}}}*/
 
 #include <apti18n.h>
                                                                        /*}}}*/


@@ -394,8 +393,18 @@ void pkgProblemResolver::MakeScores()
    };
    int PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
    int PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
    };
    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 DepMap[] = {
+      0,
+      _config->FindI("pkgProblemResolver::Scores::Depends",1),
+      _config->FindI("pkgProblemResolver::Scores::PreDepends",1),
+      _config->FindI("pkgProblemResolver::Scores::Suggests",0),
+      _config->FindI("pkgProblemResolver::Scores::Recommends",1),
+      _config->FindI("pkgProblemResolver::Scores::Conflicts",-1),
+      _config->FindI("pkgProblemResolver::Scores::Replaces",0),
+      _config->FindI("pkgProblemResolver::Scores::Obsoletes",0),
+      _config->FindI("pkgProblemResolver::Scores::Breaks",-1),
+      _config->FindI("pkgProblemResolver::Scores::Enhances",0)
+   };

    int AddProtected = _config->FindI("pkgProblemResolver::Scores::AddProtected",10000);
    int AddEssential = _config->FindI("pkgProblemResolver::Scores::AddEssential",5000);
 
    int AddProtected = _config->FindI("pkgProblemResolver::Scores::AddProtected",10000);
    int AddEssential = _config->FindI("pkgProblemResolver::Scores::AddEssential",5000);
 


@@ -408,8 +417,15 @@ void pkgProblemResolver::MakeScores()
          << "  Extra => " << PrioMap[pkgCache::State::Extra] << endl
          << "  Essentials => " << PrioEssentials << endl
          << "  InstalledAndNotObsolete => " << PrioInstalledAndNotObsolete << endl
          << "  Extra => " << PrioMap[pkgCache::State::Extra] << endl
          << "  Essentials => " << PrioEssentials << endl
          << "  InstalledAndNotObsolete => " << PrioInstalledAndNotObsolete << endl

-         << "  Depends => " << PrioDepends << endl
-         << "  Recommends => " << PrioRecommends << endl
+         << "  Pre-Depends => " << DepMap[pkgCache::Dep::PreDepends] << endl
+         << "  Depends => " << DepMap[pkgCache::Dep::Depends] << endl
+         << "  Recommends => " << DepMap[pkgCache::Dep::Recommends] << endl
+         << "  Suggests => " << DepMap[pkgCache::Dep::Suggests] << endl
+         << "  Conflicts => " << DepMap[pkgCache::Dep::Conflicts] << endl
+         << "  Breaks => " << DepMap[pkgCache::Dep::DpkgBreaks] << endl
+         << "  Replaces => " << DepMap[pkgCache::Dep::Replaces] << endl
+         << "  Obsoletes => " << DepMap[pkgCache::Dep::Obsoletes] << endl
+         << "  Enhances => " << DepMap[pkgCache::Dep::Enhances] << endl

          << "  AddProtected => " << AddProtected << endl
          << "  AddEssential => " << AddEssential << endl;
 
          << "  AddProtected => " << AddProtected << endl
          << "  AddEssential => " << AddEssential << endl;
 


@@ -424,39 +440,41 @@ void pkgProblemResolver::MakeScores()
       /* 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
       /* 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) */
+        a conflicts on a powerful normal package (ie libc6) */

       if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential
          || (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
         Score += PrioEssentials;
 
       if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential
          || (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
         Score += PrioEssentials;
 

-      // We transform the priority
-      if (Cache[I].InstVerIter(Cache)->Priority <= 5)
-        Score += PrioMap[Cache[I].InstVerIter(Cache)->Priority];
-      
+      pkgCache::VerIterator const InstVer = Cache[I].InstVerIter(Cache);
+      // We apply priorities only to downloadable packages, all others are prio:extra
+      // as an obsolete prio:standard package can't be that standard anymore…
+      if (InstVer->Priority <= pkgCache::State::Extra && InstVer.Downloadable() == true)
+        Score += PrioMap[InstVer->Priority];
+      else
+        Score += PrioMap[pkgCache::State::Extra];
+

       /* This helps to fix oddball problems with conflicting packages
       /* This helps to fix oddball problems with conflicting packages

-         on the same level. We enhance the score of installed packages 
-        if those are not obsolete
-      */
+        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 += PrioInstalledAndNotObsolete;
       if (I->CurrentVer != 0 && Cache[I].CandidateVer != 0 && Cache[I].CandidateVerIter(Cache).Downloadable())
         Score += PrioInstalledAndNotObsolete;

-   }

 
 

-   // Now that we have the base scores we go and propogate dependencies
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
-   {
-      if (Cache[I].InstallVer == 0)
-        continue;
-      
-      for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false; ++D)
+      // propagate score points along dependencies
+      for (pkgCache::DepIterator D = InstVer.DependsList(); D.end() == false; ++D)

       {
       {

-        if (D->Type == pkgCache::Dep::Depends || 
-            D->Type == pkgCache::Dep::PreDepends)
-           Scores[D.TargetPkg()->ID] += PrioDepends;
-        else if (D->Type == pkgCache::Dep::Recommends)
-           Scores[D.TargetPkg()->ID] += PrioRecommends;
+        if (DepMap[D->Type] == 0)
+           continue;
+        pkgCache::PkgIterator const T = D.TargetPkg();
+        if (D->Version != 0)
+        {
+           pkgCache::VerIterator const IV = Cache[T].InstVerIter(Cache);
+           if (IV.end() == true || D.IsSatisfied(IV) != D.IsNegative())
+              continue;
+        }
+        Scores[T->ID] += DepMap[D->Type];

       }
       }

-   }   
-   
+   }
+

    // Copy the scores to advoid additive looping
    SPtrArray<int> OldScores = new int[Size];
    memcpy(OldScores,Scores,sizeof(*Scores)*Size);
    // Copy the scores to advoid additive looping
    SPtrArray<int> OldScores = new int[Size];
    memcpy(OldScores,Scores,sizeof(*Scores)*Size);


@@ -485,7 +503,7 @@ void pkgProblemResolver::MakeScores()
       }      
    }
 
       }      
    }
 

-   /* Now we propogate along provides. This makes the packages that 
+   /* Now we propagate along provides. This makes the packages that

       provide important packages extremely important */
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
    {
       provide important packages extremely important */
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
    {


@@ -640,7 +658,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
    adjusting the package will inflict. 
       
    It goes from highest score to lowest and corrects all of the breaks by 
    adjusting the package will inflict. 
       
    It goes from highest score to lowest and corrects all of the breaks by 

-   keeping or removing the dependant packages. If that fails then it removes
+   keeping or removing the dependent packages. If that fails then it removes

    the package itself and goes on. The routine should be able to intelligently
    go from any broken state to a fixed state. 
  
    the package itself and goes on. The routine should be able to intelligently
    go from any broken state to a fixed state. 
  


@@ -830,7 +848,7 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
 
            /* Look across the version list. If there are no possible
               targets then we keep the package and bail. This is necessary
 
            /* Look across the version list. If there are no possible
               targets then we keep the package and bail. This is necessary

-              if a package has a dep on another package that cant be found */
+              if a package has a dep on another package that can't be found */

            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
            if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
                Start.IsNegative() == false &&
            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
            if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
                Start.IsNegative() == false &&


@@ -869,8 +887,8 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)
                }
 
               if (Debug == true)
                }
 
               if (Debug == true)

-                 clog << "  Considering " << Pkg.FullName(false) << ' ' << (int)Scores[Pkg->ID] <<
-                 " as a solution to " << I.FullName(false) << ' ' << (int)Scores[I->ID] << endl;
+                 clog << "  Considering " << Pkg.FullName(false) << ' ' << Scores[Pkg->ID] <<
+                 " as a solution to " << I.FullName(false) << ' ' << Scores[I->ID] << endl;

 
               /* Try to fix the package under consideration rather than
                  fiddle with the VList package */
 
               /* Try to fix the package under consideration rather than
                  fiddle with the VList package */


@@ -1183,7 +1201,7 @@ bool pkgProblemResolver::ResolveByKeepInternal()
          continue;
 
       /* Keep the package. If this works then great, otherwise we have
          continue;
 
       /* Keep the package. If this works then great, otherwise we have

-                to be significantly more agressive and manipulate its dependencies */
+        to be significantly more aggressive and manipulate its dependencies */

       if ((Flags[I->ID] & Protected) == 0)
       {
         if (Debug == true)
       if ((Flags[I->ID] & Protected) == 0)
       {
         if (Debug == true)