// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: algorithms.cc,v 1.32 2001/02/20 07:03:17 jgg Exp $
+// $Id: algorithms.cc,v 1.44 2002/11/28 18:49:16 jgg Exp $
/* ######################################################################
Algorithms - A set of misc algorithms
#include <apti18n.h>
-#include <iostream.h>
+#include <iostream>
/*}}}*/
+using namespace std;
pkgProblemResolver *pkgProblemResolver::This = 0;
/*}}}*/
// Simulate::Describe - Describe a package /*{{{*/
// ---------------------------------------------------------------------
-/* */
-void pkgSimulate::Describe(PkgIterator Pkg,ostream &out,bool Now)
+/* Parameter Current == true displays the current package version,
+ Parameter Candidate == true displays the candidate package version */
+void pkgSimulate::Describe(PkgIterator Pkg,ostream &out,bool Current,bool Candidate)
{
VerIterator Ver(Sim);
- if (Now == true)
+
+ out << Pkg.Name();
+
+ if (Current == true)
+ {
Ver = Pkg.CurrentVer();
- else
- Ver = Sim[Pkg].CandidateVerIter(Sim);
+ if (Ver.end() == false)
+ out << " [" << Ver.VerStr() << ']';
+ }
- out << Pkg.Name();
-
- if (Ver.end() == true)
- return;
+ if (Candidate == true)
+ {
+ Ver = Sim[Pkg].CandidateVerIter(Sim);
+ if (Ver.end() == true)
+ return;
- out << " (" << Ver.VerStr() << ' ' << Ver.RelStr() << ')';
+ out << " (" << Ver.VerStr() << ' ' << Ver.RelStr() << ')';
+ }
}
/*}}}*/
// Simulate::Install - Simulate unpacking of a package /*{{{*/
Flags[Pkg->ID] = 1;
cout << "Inst ";
- Describe(Pkg,cout,false);
+ Describe(Pkg,cout,true,true);
Sim.MarkInstall(Pkg,false);
// Look for broken conflicts+predepends.
else
{
cout << "Conf ";
- Describe(Pkg,cout,false);
+ Describe(Pkg,cout,false,true);
}
if (Sim.BrokenCount() != 0)
cout << "Purg ";
else
cout << "Remv ";
- Describe(Pkg,cout,false);
+ Describe(Pkg,cout,true,false);
if (Sim.BrokenCount() != 0)
ShortBreaks();
{
for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
{
+ if (I->VersionList == 0)
+ continue;
+
// Only choice for a ReInstReq package is to reinstall
if (I->InstState == pkgCache::State::ReInstReq ||
I->InstState == pkgCache::State::HoldReInstReq)
{
- if (I.CurrentVer().Downloadable() == true)
+ if (I->CurrentVer != 0 && I.CurrentVer().Downloadable() == true)
Cache.MarkKeep(I);
else
{
// Is this right? Will dpkg choke on an upgrade?
- if (Cache[I].CandidateVerIter(Cache).Downloadable() == true)
+ if (Cache[I].CandidateVer != 0 &&
+ Cache[I].CandidateVerIter(Cache).Downloadable() == true)
Cache.MarkInstall(I);
else
return _error->Error(_("The package %s needs to be reinstalled, "
re-unpacked (probably) */
case pkgCache::State::UnPacked:
case pkgCache::State::HalfConfigured:
- if (I.CurrentVer().Downloadable() == true ||
+ if ((I->CurrentVer != 0 && I.CurrentVer().Downloadable() == true) ||
I.State() != pkgCache::PkgIterator::NeedsUnpack)
Cache.MarkKeep(I);
else
{
- if (Cache[I].CandidateVerIter(Cache).Downloadable() == true)
+ if (Cache[I].CandidateVer != 0 &&
+ Cache[I].CandidateVerIter(Cache).Downloadable() == true)
Cache.MarkInstall(I);
else
Cache.MarkDelete(I);
if (Cache.BrokenCount() != 0)
return false;
- // We loop indefinately to get the minimal set size.
+ // We loop for 10 tries to get the minimal set size.
bool Change = false;
unsigned int Count = 0;
do
{
if ((Flags[Pkg->ID] & Upgradable) == 0 || Cache[Pkg].Upgradable() == false)
return false;
+ if ((Flags[Pkg->ID] & Protected) == Protected)
+ return false;
Flags[Pkg->ID] &= ~Upgradable;
if (Debug == true)
clog << " Or group remove for " << I.Name() << endl;
Cache.MarkDelete(I);
+ Change = true;
}
}
if (OldEnd == LEnd && OrOp == OrKeep)
if (Debug == true)
clog << " Or group keep for " << I.Name() << endl;
Cache.MarkKeep(I);
+ Change = true;
}
}
D.GlobOr(Start,End);
if (Start.end() == true)
break;
-
+
// We only worry about critical deps.
if (End.IsCritical() != true)
continue;
-
+
InOr = Start != End;
OldEnd = LEnd;
- }
+ }
else
Start++;
-
+
// Dep is ok
if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
+ {
+ InOr = false;
continue;
-
+ }
+
if (Debug == true)
clog << "Package " << I.Name() << " has broken dep on " << Start.TargetPkg().Name() << endl;
{
pkgCache::VerIterator Ver(Cache,*V);
pkgCache::PkgIterator Pkg = Ver.ParentPkg();
-
+
if (Debug == true)
clog << " Considering " << Pkg.Name() << ' ' << (int)Scores[Pkg->ID] <<
" as a solution to " << I.Name() << ' ' << (int)Scores[I->ID] << endl;
+
+ /* Try to fix the package under consideration rather than
+ fiddle with the VList package */
if (Scores[I->ID] <= Scores[Pkg->ID] ||
((Cache[Start] & pkgDepCache::DepNow) == 0 &&
End->Type != pkgCache::Dep::Conflicts &&
}
else
{
- if (Debug == true)
- clog << " Added " << Pkg.Name() << " to the remove list" << endl;
+ /* This is a conflicts, and the version we are looking
+ at is not the currently selected version of the
+ package, which means it is not necessary to
+ remove/keep */
+ if (Cache[Pkg].InstallVer != Ver &&
+ (Start->Type == pkgCache::Dep::Conflicts ||
+ Start->Type == pkgCache::Dep::Obsoletes))
+ continue;
+
// Skip adding to the kill list if it is protected
if ((Flags[Pkg->ID] & Protected) != 0)
continue;
+
+ if (Debug == true)
+ clog << " Added " << Pkg.Name() << " to the remove list" << endl;
LEnd->Pkg = Pkg;
LEnd->Dep = End;
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)) {
+ std::cout << "Resolve installed new pkg: " << I.Name() << " (now marking it as auto)" << std::endl;
+ Cache[I].Flags |= pkgCache::Flag::Auto;
+ }
+ }
+
+
return true;
}
/*}}}*/
// Isolate the problem dependencies
for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false;)
{
- // Compute a single dependency element (glob or)
- pkgCache::DepIterator Start = D;
- pkgCache::DepIterator End = D;
- unsigned char State = 0;
- for (bool LastOR = true; D.end() == false && LastOR == true; D++)
- {
- State |= Cache[D];
- LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
- if (LastOR == true)
- End = D;
- }
-
+ DepIterator Start;
+ DepIterator End;
+ D.GlobOr(Start,End);
+
// We only worry about critical deps.
if (End.IsCritical() != true)
continue;
// Dep is ok
if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
continue;
-
- // Hm, the group is broken.. I have no idea how to handle this
- if (Start != End)
- {
- clog << "Note, a broken or group was found in " << I.Name() << "." << endl;
- if ((Flags[I->ID] & Protected) == 0)
- Cache.MarkKeep(I);
- break;
- }
-
- if (Debug == true)
- clog << "Package " << I.Name() << " has broken dep on " << End.TargetPkg().Name() << endl;
-
- // Look at all the possible provides on this package
- SPtrArray<pkgCache::Version *> VList = End.AllTargets();
- for (pkgCache::Version **V = VList; *V != 0; V++)
+
+ /* Hm, the group is broken.. I suppose the best thing to do is to
+ is to try every combination of keep/not-keep for the set, but thats
+ slow, and this never happens, just be conservative and assume the
+ list of ors is in preference and keep till it starts to work. */
+ while (true)
{
- pkgCache::VerIterator Ver(Cache,*V);
- pkgCache::PkgIterator Pkg = Ver.ParentPkg();
-
- // It is not keepable
- if (Cache[Pkg].InstallVer == 0 ||
- Pkg->CurrentVer == 0)
- continue;
+ if (Debug == true)
+ clog << "Package " << I.Name() << " has broken dep on " << Start.TargetPkg().Name() << endl;
- if ((Flags[I->ID] & Protected) == 0)
+ // Look at all the possible provides on this package
+ SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
+ for (pkgCache::Version **V = VList; *V != 0; V++)
{
- if (Debug == true)
- clog << " Keeping Package " << Pkg.Name() << " due to dep" << endl;
- Cache.MarkKeep(Pkg);
+ pkgCache::VerIterator Ver(Cache,*V);
+ pkgCache::PkgIterator Pkg = Ver.ParentPkg();
+
+ // It is not keepable
+ if (Cache[Pkg].InstallVer == 0 ||
+ Pkg->CurrentVer == 0)
+ continue;
+
+ if ((Flags[I->ID] & Protected) == 0)
+ {
+ if (Debug == true)
+ clog << " Keeping Package " << Pkg.Name() << " due to dep" << endl;
+ Cache.MarkKeep(Pkg);
+ }
+
+ if (Cache[I].InstBroken() == false)
+ break;
}
if (Cache[I].InstBroken() == false)
break;
- }
+ if (Start == End)
+ break;
+ Start++;
+ }
+
if (Cache[I].InstBroken() == false)
break;
}
pkgCache::VerIterator R(*PrioCache,*(pkgCache::Version **)B);
if ((L.ParentPkg()->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential &&
- (L.ParentPkg()->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
- return 1;
+ (R.ParentPkg()->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
+ return 1;
if ((L.ParentPkg()->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential &&
- (L.ParentPkg()->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
- return -1;
+ (R.ParentPkg()->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+ return -1;
if (L->Priority != R->Priority)
- return L->Priority - R->Priority;
+ return R->Priority - L->Priority;
return strcmp(L.ParentPkg().Name(),R.ParentPkg().Name());
}
void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List)
qsort(List,Count,sizeof(*List),PrioComp);
}
/*}}}*/
+
+
+// pkgMarkPkgUsed - Mark used packages as dirty /*{{{*/
+// ---------------------------------------------------------------------
+/* Mark all reachable packages as dirty. */
+void pkgMarkPkgUsed(pkgDepCache &Cache, pkgCache::PkgIterator Pkg,
+ pkgCache::State::PkgRemoveState DirtLevel)
+{
+ // If it is not installed, and we are in manual mode, ignore it
+ if ((Pkg->CurrentVer == 0 && Cache[Pkg].Install() == false || Cache[Pkg].Delete() == true) &&
+ DirtLevel == pkgCache::State::RemoveManual)
+ {
+// fprintf(stdout,"This one is not installed/virtual %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+ return;
+ }
+
+ // If it is not installed, and it is not virtual, ignore it
+ if ((Pkg->CurrentVer == 0 && Cache[Pkg].Install() == false || Cache[Pkg].Delete() == true) &&
+ Pkg->VersionList != 0)
+ {
+// fprintf(stdout,"This one is not installed %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+ return;
+ }
+
+ // If it is similar or more dirty than we are ;-), because we've been here already, don't mark it
+ // This is necessary because virtual packages just relay the current level,
+ // so it may be possible e.g. that this was already seen with ::RemoveSuggested, but
+ // we are ::RemoveRequired
+ if (Cache[Pkg].Dirty() >= DirtLevel)
+ {
+ //fprintf(stdout,"Seen already %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+ return;
+ }
+
+ // If it is less important than the current DirtLevel, don't mark it
+ if (Cache[Pkg].AutomaticRemove != pkgCache::State::RemoveManual &&
+ Cache[Pkg].AutomaticRemove > DirtLevel)
+ {
+// fprintf(stdout,"We don't need %s %d %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel, Cache[Pkg].Dirty());
+ return;
+ }
+
+ // Mark it as used
+ Cache.SetDirty(Pkg, DirtLevel);
+
+ //fprintf(stdout,"We keep %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+
+ // We are a virtual package
+ if (Pkg->VersionList == 0)
+ {
+// fprintf(stdout,"We are virtual %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+ for (pkgCache::PrvIterator Prv = Pkg.ProvidesList(); ! Prv.end(); ++Prv)
+ pkgMarkPkgUsed (Cache, Prv.OwnerPkg(), DirtLevel);
+ return;
+ }
+
+ // Depending on the type of dependency, follow it
+ for (pkgCache::DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); ! D.end(); ++D)
+ {
+// fprintf(stdout,"We depend on %s %s\n", D.TargetPkg().Name(), D.DepType());
+
+ switch(D->Type)
+ {
+ case pkgCache::Dep::Depends:
+ case pkgCache::Dep::PreDepends:
+ pkgMarkPkgUsed (Cache, D.TargetPkg(), pkgCache::State::RemoveRequired);
+ break;
+ case pkgCache::Dep::Recommends:
+ pkgMarkPkgUsed (Cache, D.TargetPkg(), pkgCache::State::RemoveRecommended);
+ break;
+ case pkgCache::Dep::Suggests:
+ pkgMarkPkgUsed (Cache, D.TargetPkg(), pkgCache::State::RemoveSuggested);
+ break;
+ case pkgCache::Dep::Conflicts:
+ case pkgCache::Dep::Replaces:
+ case pkgCache::Dep::Obsoletes:
+ // We don't handle these here
+ break;
+ }
+ }
+// fprintf(stdout,"We keep %s %d %d <END>\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+}
+ /*}}}*/
+
+bool pkgMarkUsed(pkgDepCache &Cache)
+{
+ // debug only
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); ! Pkg.end(); ++Pkg)
+ if(!Cache[Pkg].Dirty() && Cache[Pkg].AutomaticRemove > 0)
+ std::cout << "has auto-remove information: " << Pkg.Name()
+ << " " << (int)Cache[Pkg].AutomaticRemove
+ << std::endl;
+
+ // init with defaults
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); ! Pkg.end(); ++Pkg)
+ Cache.SetDirty(Pkg, pkgCache::State::RemoveUnknown);
+
+ // go recursive over the cache
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); ! Pkg.end(); ++Pkg)
+ pkgMarkPkgUsed (Cache, Pkg, pkgCache::State::RemoveManual);
+
+
+ return true;
+}
projects / apt.git / blobdiff