apt-private/private-cacheset.h

   1 #ifndef APT_PRIVATE_CACHESET_H
   2 #define APT_PRIVATE_CACHESET_H
   3
   4 #include <apt-pkg/cachefile.h>
   5 #include <apt-pkg/cacheset.h>
   6 #include <apt-pkg/sptr.h>
   7
   8 #include <algorithm>
   9 #include <vector>
  10
  11 #include "private-output.h"
  12
  13 #include <apti18n.h>
  14
  15 struct VersionSortDescriptionLocality
  16 {
  17    bool operator () (const pkgCache::VerIterator &v_lhs,
  18                      const pkgCache::VerIterator &v_rhs)
  19     {
  20         pkgCache::DescFile *A = v_lhs.TranslatedDescription().FileList();
  21         pkgCache::DescFile *B = v_rhs.TranslatedDescription().FileList();
  22         if (A == 0 && B == 0)
  23            return false;
  24
  25        if (A == 0)
  26           return true;
  27
  28        if (B == 0)
  29           return false;
  30
  31        if (A->File == B->File)
  32           return A->Offset < B->Offset;
  33
  34        return A->File < B->File;
  35     }
  36 };
  37
  38 // sorted by locality which makes iterating much faster
  39 typedef APT::VersionContainer<
  40    std::set<pkgCache::VerIterator,
  41             VersionSortDescriptionLocality> > LocalitySortedVersionSet;
  42
  43 class Matcher {
  44 public:
  45     virtual bool operator () (const pkgCache::PkgIterator &/*P*/) {
  46         return true;}
  47 };
  48
  49 // FIXME: add default argument for OpProgress (or overloaded function)
  50 bool GetLocalitySortedVersionSet(pkgCacheFile &CacheFile,
  51                                     LocalitySortedVersionSet &output_set,
  52                                     Matcher &matcher,
  53                                     OpProgress &progress);
  54 bool GetLocalitySortedVersionSet(pkgCacheFile &CacheFile,
  55                                     LocalitySortedVersionSet &output_set,
  56                                     OpProgress &progress);
  57
  58
  59 // CacheSetHelper saving virtual packages                               /*{{{*/
  60 class CacheSetHelperVirtuals: public APT::CacheSetHelper {
  61 public:
  62    APT::PackageSet virtualPkgs;
  63
  64    virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  65       virtualPkgs.insert(Pkg);
  66       return CacheSetHelper::canNotFindCandidateVer(Cache, Pkg);
  67    }
  68
  69    virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  70       virtualPkgs.insert(Pkg);
  71       return CacheSetHelper::canNotFindNewestVer(Cache, Pkg);
  72    }
  73
  74    virtual void canNotFindAllVer(APT::VersionContainerInterface * vci, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  75       virtualPkgs.insert(Pkg);
  76       CacheSetHelper::canNotFindAllVer(vci, Cache, Pkg);
  77    }
  78
  79    CacheSetHelperVirtuals(bool const ShowErrors = true, GlobalError::MsgType const &ErrorType = GlobalError::NOTICE) : CacheSetHelper(ShowErrors, ErrorType) {}
  80 };
  81                                                                         /*}}}*/
  82
  83 // CacheSetHelperAPTGet - responsible for message telling from the CacheSets/*{{{*/
  84 class CacheSetHelperAPTGet : public APT::CacheSetHelper {
  85         /** \brief stream message should be printed to */
  86         std::ostream &out;
  87         /** \brief were things like Task or RegEx used to select packages? */
  88         bool explicitlyNamed;
  89
  90         APT::PackageSet virtualPkgs;
  91
  92 public:
  93         std::list<std::pair<pkgCache::VerIterator, std::string> > selectedByRelease;
  94
  95         CacheSetHelperAPTGet(std::ostream &out) : APT::CacheSetHelper(true), out(out) {
  96                 explicitlyNamed = true;
  97         }
  98
  99         virtual void showTaskSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 100                 ioprintf(out, _("Note, selecting '%s' for task '%s'\n"),
 101                                 Pkg.FullName(true).c_str(), pattern.c_str());
 102                 explicitlyNamed = false;
 103         }
 104         virtual void showFnmatchSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 105                 ioprintf(out, _("Note, selecting '%s' for glob '%s'\n"),
 106                                 Pkg.FullName(true).c_str(), pattern.c_str());
 107                 explicitlyNamed = false;
 108         }
 109         virtual void showRegExSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 110                 ioprintf(out, _("Note, selecting '%s' for regex '%s'\n"),
 111                                 Pkg.FullName(true).c_str(), pattern.c_str());
 112                 explicitlyNamed = false;
 113         }
 114         virtual void showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/, pkgCache::VerIterator const Ver,
 115                                  std::string const &ver, bool const /*verIsRel*/) {
 116                 if (ver == Ver.VerStr())
 117                         return;
 118                 selectedByRelease.push_back(make_pair(Ver, ver));
 119         }
 120
 121         bool showVirtualPackageErrors(pkgCacheFile &Cache) {
 122                 if (virtualPkgs.empty() == true)
 123                         return true;
 124                 for (APT::PackageSet::const_iterator Pkg = virtualPkgs.begin();
 125                      Pkg != virtualPkgs.end(); ++Pkg) {
 126                         if (Pkg->ProvidesList != 0) {
 127                                 ioprintf(c1out,_("Package %s is a virtual package provided by:\n"),
 128                                          Pkg.FullName(true).c_str());
 129
 130                                 pkgCache::PrvIterator I = Pkg.ProvidesList();
 131                                 unsigned short provider = 0;
 132                                 for (; I.end() == false; ++I) {
 133                                         pkgCache::PkgIterator Pkg = I.OwnerPkg();
 134
 135                                         if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer()) {
 136                                                 c1out << "  " << Pkg.FullName(true) << " " << I.OwnerVer().VerStr();
 137                                                 if (Cache[Pkg].Install() == true && Cache[Pkg].NewInstall() == false)
 138                                                         c1out << _(" [Installed]");
 139                                                 c1out << std::endl;
 140                                                 ++provider;
 141                                         }
 142                                 }
 143                                 // if we found no candidate which provide this package, show non-candidates
 144                                 if (provider == 0)
 145                                         for (I = Pkg.ProvidesList(); I.end() == false; ++I)
 146                                                 c1out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
 147                                                       << _(" [Not candidate version]") << std::endl;
 148                                 else
 149                                    out << _("You should explicitly select one to install.") << std::endl;
 150                         } else {
 151                                 ioprintf(c1out,
 152                                         _("Package %s is not available, but is referred to by another package.\n"
 153                                           "This may mean that the package is missing, has been obsoleted, or\n"
 154                                           "is only available from another source\n"),Pkg.FullName(true).c_str());
 155
 156                                 std::string List;
 157                                 std::string VersionsList;
 158                                 SPtrArray<bool> Seen = new bool[Cache.GetPkgCache()->Head().PackageCount];
 159                                 memset(Seen,0,Cache.GetPkgCache()->Head().PackageCount*sizeof(*Seen));
 160                                 for (pkgCache::DepIterator Dep = Pkg.RevDependsList();
 161                                      Dep.end() == false; ++Dep) {
 162                                         if (Dep->Type != pkgCache::Dep::Replaces)
 163                                                 continue;
 164                                         if (Seen[Dep.ParentPkg()->ID] == true)
 165                                                 continue;
 166                                         Seen[Dep.ParentPkg()->ID] = true;
 167                                         List += Dep.ParentPkg().FullName(true) + " ";
 168                                         //VersionsList += std::string(Dep.ParentPkg().CurVersion) + "\n"; ???
 169                                 }
 170                                 ShowList(c1out,_("However the following packages replace it:"),List,VersionsList);
 171                         }
 172                         c1out << std::endl;
 173                 }
 174                 return false;
 175         }
 176
 177         virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 178                 APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::CANDIDATE);
 179                 if (verset.empty() == false)
 180                         return *(verset.begin());
 181                 else if (ShowError == true) {
 182                         _error->Error(_("Package '%s' has no installation candidate"),Pkg.FullName(true).c_str());
 183                         virtualPkgs.insert(Pkg);
 184                 }
 185                 return pkgCache::VerIterator(Cache, 0);
 186         }
 187
 188         virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 189                 if (Pkg->ProvidesList != 0)
 190                 {
 191                         APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::NEWEST);
 192                         if (verset.empty() == false)
 193                                 return *(verset.begin());
 194                         if (ShowError == true)
 195                                 ioprintf(out, _("Virtual packages like '%s' can't be removed\n"), Pkg.FullName(true).c_str());
 196                 }
 197                 else
 198                 {
 199                         pkgCache::GrpIterator Grp = Pkg.Group();
 200                         pkgCache::PkgIterator P = Grp.PackageList();
 201                         for (; P.end() != true; P = Grp.NextPkg(P))
 202                         {
 203                                 if (P == Pkg)
 204                                         continue;
 205                                 if (P->CurrentVer != 0) {
 206                                         // TRANSLATORS: Note, this is not an interactive question
 207                                         ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 208                                                  Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 209                                         break;
 210                                 }
 211                         }
 212                         if (P.end() == true)
 213                                 ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 214                 }
 215                 return pkgCache::VerIterator(Cache, 0);
 216         }
 217
 218         APT::VersionSet tryVirtualPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg,
 219                                                 APT::VersionSet::Version const &select) {
 220                 /* This is a pure virtual package and there is a single available
 221                    candidate providing it. */
 222                 if (unlikely(Cache[Pkg].CandidateVer != 0) || Pkg->ProvidesList == 0)
 223                         return APT::VersionSet();
 224
 225                 pkgCache::PkgIterator Prov;
 226                 bool found_one = false;
 227                 for (pkgCache::PrvIterator P = Pkg.ProvidesList(); P; ++P) {
 228                         pkgCache::VerIterator const PVer = P.OwnerVer();
 229                         pkgCache::PkgIterator const PPkg = PVer.ParentPkg();
 230
 231                         /* Ignore versions that are not a candidate. */
 232                         if (Cache[PPkg].CandidateVer != PVer)
 233                                 continue;
 234
 235                         if (found_one == false) {
 236                                 Prov = PPkg;
 237                                 found_one = true;
 238                         } else if (PPkg != Prov) {
 239                                 // same group, so it's a foreign package
 240                                 if (PPkg->Group == Prov->Group) {
 241                                         // do we already have the requested arch?
 242                                         if (strcmp(Pkg.Arch(), Prov.Arch()) == 0 ||
 243                                             strcmp(Prov.Arch(), "all") == 0 ||
 244                                             unlikely(strcmp(PPkg.Arch(), Prov.Arch()) == 0)) // packages have only on candidate, but just to be sure
 245                                                 continue;
 246                                         // see which architecture we prefer more and switch to it
 247                                         std::vector<std::string> archs = APT::Configuration::getArchitectures();
 248                                         if (std::find(archs.begin(), archs.end(), PPkg.Arch()) < std::find(archs.begin(), archs.end(), Prov.Arch()))
 249                                                 Prov = PPkg;
 250                                         continue;
 251                                 }
 252                                 found_one = false; // we found at least two
 253                                 break;
 254                         }
 255                 }
 256
 257                 if (found_one == true) {
 258                         ioprintf(out, _("Note, selecting '%s' instead of '%s'\n"),
 259                                  Prov.FullName(true).c_str(), Pkg.FullName(true).c_str());
 260                         return APT::VersionSet::FromPackage(Cache, Prov, select, *this);
 261                 }
 262                 return APT::VersionSet();
 263         }
 264
 265         inline bool allPkgNamedExplicitly() const { return explicitlyNamed; }
 266
 267 };
 268                                                                         /*}}}*/
 269
 270 #endif