X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/74eb9ea2c4b00538e3358bb67bf19e74047d340d..224da0778ff385ccbbc7f4abfbd2a6ddcbd9dbfc:/apt-pkg/policy.cc diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc index 35a50425b..479cf3935 100644 --- a/apt-pkg/policy.cc +++ b/apt-pkg/policy.cc @@ -23,16 +23,14 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ -#ifdef __GNUG__ -#pragma implementation "apt-pkg/policy.h" -#endif #include #include #include #include +#include #include #include - + #include #include @@ -108,7 +106,7 @@ bool pkgPolicy::InitDefaults() if (_config->FindB("Debug::pkgPolicy",false) == true) for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++) - cout << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << endl; + std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl; return true; } @@ -123,6 +121,18 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) signed Max = GetPriority(Pkg); pkgCache::VerIterator Pref = GetMatch(Pkg); + // Alternatives in case we can not find our package pin (Bug#512318). + signed MaxAlt = 0; + pkgCache::VerIterator PrefAlt; + + // no package = no candidate version + if (Pkg.end() == true) + return Pref; + + // packages with a pin lower than 0 have no newer candidate than the current version + if (Max < 0) + return Pkg.CurrentVer(); + /* Falling through to the default version.. Setting Max to zero effectively excludes everything <= 0 which are the non-automatic priorities.. The status file is given a prio of 100 which will exclude @@ -153,6 +163,11 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) { Pref = Ver; Max = Prio; + } + if (Prio > MaxAlt) + { + PrefAlt = Ver; + MaxAlt = Prio; } } @@ -169,6 +184,11 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) break; } } + // If we do not find our candidate, use the one with the highest pin. + // This means that if there is a version available with pin > 0; there + // will always be a candidate (Closes: #512318) + if (!Pref.IsGood() && MaxAlt > 0) + Pref = PrefAlt; return Pref; } /*}}}*/ @@ -181,35 +201,38 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name, string Data,signed short Priority) { - Pin *P = 0; - if (Name.empty() == true) - P = &*Defaults.insert(Defaults.end(),PkgPin()); - else { - // Get a spot to put the pin - pkgCache::PkgIterator Pkg = Cache->FindPkg(Name); - if (Pkg.end() == true) + Pin *P = &*Defaults.insert(Defaults.end(),PkgPin()); + P->Type = Type; + P->Priority = Priority; + P->Data = Data; + return; + } + + // Get a spot to put the pin + pkgCache::GrpIterator Grp = Cache->FindGrp(Name); + for (pkgCache::PkgIterator Pkg = Grp.FindPkg("any"); + Pkg.end() != true; Pkg = Grp.NextPkg(Pkg)) + { + Pin *P = 0; + if (Pkg.end() == false) + P = Pins + Pkg->ID; + else { // Check the unmatched table - for (vector::iterator I = Unmatched.begin(); + for (vector::iterator I = Unmatched.begin(); I != Unmatched.end() && P == 0; I++) if (I->Pkg == Name) P = &*I; - + if (P == 0) - P = &*Unmatched.insert(Unmatched.end(),PkgPin()); + P = &*Unmatched.insert(Unmatched.end(),PkgPin()); } - else - { - P = Pins + Pkg->ID; - } + P->Type = Type; + P->Priority = Priority; + P->Data = Data; } - - // Set.. - P->Type = Type; - P->Priority = Priority; - P->Data = Data; } /*}}}*/ // Policy::GetMatch - Get the matching version for a package pin /*{{{*/ @@ -242,7 +265,47 @@ signed short pkgPolicy::GetPriority(pkgCache::PkgIterator const &Pkg) return 0; } /*}}}*/ +// PreferenceSection class - Overriding the default TrimRecord method /*{{{*/ +// --------------------------------------------------------------------- +/* The preference file is a user generated file so the parser should + therefore be a bit more friendly by allowing comments and new lines + all over the place rather than forcing a special format */ +class PreferenceSection : public pkgTagSection +{ + void TrimRecord(bool BeforeRecord, const char* &End) + { + for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r' || Stop[0] == '#'); Stop++) + if (Stop[0] == '#') + Stop = (const char*) memchr(Stop,'\n',End-Stop); + } +}; + /*}}}*/ +// ReadPinDir - Load the pin files from this dir into a Policy /*{{{*/ +// --------------------------------------------------------------------- +/* This will load each pin file in the given dir into a Policy. If the + given dir is empty the dir set in Dir::Etc::PreferencesParts is used. + Note also that this method will issue a warning if the dir does not + exists but it will return true in this case! */ +bool ReadPinDir(pkgPolicy &Plcy,string Dir) +{ + if (Dir.empty() == true) + Dir = _config->FindDir("Dir::Etc::PreferencesParts"); + if (FileExists(Dir) == false) + { + _error->WarningE("FileExists",_("Unable to read %s"),Dir.c_str()); + return true; + } + + vector const List = GetListOfFilesInDir(Dir, "pref", true, true); + + // Read the files + for (vector::const_iterator I = List.begin(); I != List.end(); I++) + if (ReadPinFile(Plcy, *I) == false) + return false; + return true; +} + /*}}}*/ // ReadPinFile - Load the pin file into a Policy /*{{{*/ // --------------------------------------------------------------------- /* I'd like to see the preferences file store more than just pin information @@ -262,12 +325,12 @@ bool ReadPinFile(pkgPolicy &Plcy,string File) if (_error->PendingError() == true) return false; - pkgTagSection Tags; + PreferenceSection Tags; while (TF.Step(Tags) == true) { string Name = Tags.FindS("Package"); if (Name.empty() == true) - return _error->Error(_("Invalid record in the preferences file, no Package header")); + return _error->Error(_("Invalid record in the preferences file %s, no Package header"), File.c_str()); if (Name == "*") Name = string();