diff options
Diffstat (limited to 'apt-pkg/algorithms.cc')
| -rw-r--r-- | apt-pkg/algorithms.cc | 79 |
1 files changed, 47 insertions, 32 deletions
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc index 8644a8138..a7b676660 100644 --- 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/version.h> #include <apt-pkg/sptr.h> -#include <apt-pkg/acquire-item.h> #include <apt-pkg/edsp.h> -#include <apt-pkg/sourcelist.h> -#include <apt-pkg/fileutl.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 <algorithm> #include <iostream> -#include <stdio.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 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); @@ -408,8 +417,15 @@ void pkgProblemResolver::MakeScores() << " 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; @@ -424,7 +440,7 @@ 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 - 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; @@ -439,24 +455,23 @@ void pkgProblemResolver::MakeScores() */ 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; - + // propagate score points along dependencies for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).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); @@ -485,7 +500,7 @@ 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) { @@ -640,7 +655,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix) adjusting the package will inflict. It goes from highest score to lowest and corrects all of the breaks by - 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. @@ -830,7 +845,7 @@ 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 - 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 && @@ -869,8 +884,8 @@ bool pkgProblemResolver::ResolveInternal(bool const BrokenFix) } 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 */ @@ -1183,7 +1198,7 @@ bool pkgProblemResolver::ResolveByKeepInternal() 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) |