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 showRegExSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 105                 ioprintf(out, _("Note, selecting '%s' for regex '%s'\n"),
 106                                 Pkg.FullName(true).c_str(), pattern.c_str());
 107                 explicitlyNamed = false;
 108         }
 109         virtual void showSelectedVersion(pkgCache::PkgIterator const &Pkg, pkgCache::VerIterator const Ver,
 110                                  std::string const &ver, bool const verIsRel) {
 111                 if (ver == Ver.VerStr())
 112                         return;
 113                 selectedByRelease.push_back(make_pair(Ver, ver));
 114         }
 115
 116         bool showVirtualPackageErrors(pkgCacheFile &Cache) {
 117                 if (virtualPkgs.empty() == true)
 118                         return true;
 119                 for (APT::PackageSet::const_iterator Pkg = virtualPkgs.begin();
 120                      Pkg != virtualPkgs.end(); ++Pkg) {
 121                         if (Pkg->ProvidesList != 0) {
 122                                 ioprintf(c1out,_("Package %s is a virtual package provided by:\n"),
 123                                          Pkg.FullName(true).c_str());
 124
 125                                 pkgCache::PrvIterator I = Pkg.ProvidesList();
 126                                 unsigned short provider = 0;
 127                                 for (; I.end() == false; ++I) {
 128                                         pkgCache::PkgIterator Pkg = I.OwnerPkg();
 129
 130                                         if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer()) {
 131                                                 c1out << "  " << Pkg.FullName(true) << " " << I.OwnerVer().VerStr();
 132                                                 if (Cache[Pkg].Install() == true && Cache[Pkg].NewInstall() == false)
 133                                                         c1out << _(" [Installed]");
 134                                                 c1out << std::endl;
 135                                                 ++provider;
 136                                         }
 137                                 }
 138                                 // if we found no candidate which provide this package, show non-candidates
 139                                 if (provider == 0)
 140                                         for (I = Pkg.ProvidesList(); I.end() == false; ++I)
 141                                                 c1out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
 142                                                       << _(" [Not candidate version]") << std::endl;
 143                                 else
 144                                    out << _("You should explicitly select one to install.") << std::endl;
 145                         } else {
 146                                 ioprintf(c1out,
 147                                         _("Package %s is not available, but is referred to by another package.\n"
 148                                           "This may mean that the package is missing, has been obsoleted, or\n"
 149                                           "is only available from another source\n"),Pkg.FullName(true).c_str());
 150
 151                                 std::string List;
 152                                 std::string VersionsList;
 153                                 SPtrArray<bool> Seen = new bool[Cache.GetPkgCache()->Head().PackageCount];
 154                                 memset(Seen,0,Cache.GetPkgCache()->Head().PackageCount*sizeof(*Seen));
 155                                 for (pkgCache::DepIterator Dep = Pkg.RevDependsList();
 156                                      Dep.end() == false; ++Dep) {
 157                                         if (Dep->Type != pkgCache::Dep::Replaces)
 158                                                 continue;
 159                                         if (Seen[Dep.ParentPkg()->ID] == true)
 160                                                 continue;
 161                                         Seen[Dep.ParentPkg()->ID] = true;
 162                                         List += Dep.ParentPkg().FullName(true) + " ";
 163                                         //VersionsList += std::string(Dep.ParentPkg().CurVersion) + "\n"; ???
 164                                 }
 165                                 ShowList(c1out,_("However the following packages replace it:"),List,VersionsList);
 166                         }
 167                         c1out << std::endl;
 168                 }
 169                 return false;
 170         }
 171
 172         virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 173                 APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::CANDIDATE);
 174                 if (verset.empty() == false)
 175                         return *(verset.begin());
 176                 else if (ShowError == true) {
 177                         _error->Error(_("Package '%s' has no installation candidate"),Pkg.FullName(true).c_str());
 178                         virtualPkgs.insert(Pkg);
 179                 }
 180                 return pkgCache::VerIterator(Cache, 0);
 181         }
 182
 183         virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 184                 if (Pkg->ProvidesList != 0)
 185                 {
 186                         APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::NEWEST);
 187                         if (verset.empty() == false)
 188                                 return *(verset.begin());
 189                         if (ShowError == true)
 190                                 ioprintf(out, _("Virtual packages like '%s' can't be removed\n"), Pkg.FullName(true).c_str());
 191                 }
 192                 else
 193                 {
 194                         pkgCache::GrpIterator Grp = Pkg.Group();
 195                         pkgCache::PkgIterator P = Grp.PackageList();
 196                         for (; P.end() != true; P = Grp.NextPkg(P))
 197                         {
 198                                 if (P == Pkg)
 199                                         continue;
 200                                 if (P->CurrentVer != 0) {
 201                                         // TRANSLATORS: Note, this is not an interactive question
 202                                         ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 203                                                  Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 204                                         break;
 205                                 }
 206                         }
 207                         if (P.end() == true)
 208                                 ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 209                 }
 210                 return pkgCache::VerIterator(Cache, 0);
 211         }
 212
 213         APT::VersionSet tryVirtualPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg,
 214                                                 APT::VersionSet::Version const &select) {
 215                 /* This is a pure virtual package and there is a single available
 216                    candidate providing it. */
 217                 if (unlikely(Cache[Pkg].CandidateVer != 0) || Pkg->ProvidesList == 0)
 218                         return APT::VersionSet();
 219
 220                 pkgCache::PkgIterator Prov;
 221                 bool found_one = false;
 222                 for (pkgCache::PrvIterator P = Pkg.ProvidesList(); P; ++P) {
 223                         pkgCache::VerIterator const PVer = P.OwnerVer();
 224                         pkgCache::PkgIterator const PPkg = PVer.ParentPkg();
 225
 226                         /* Ignore versions that are not a candidate. */
 227                         if (Cache[PPkg].CandidateVer != PVer)
 228                                 continue;
 229
 230                         if (found_one == false) {
 231                                 Prov = PPkg;
 232                                 found_one = true;
 233                         } else if (PPkg != Prov) {
 234                                 // same group, so it's a foreign package
 235                                 if (PPkg->Group == Prov->Group) {
 236                                         // do we already have the requested arch?
 237                                         if (strcmp(Pkg.Arch(), Prov.Arch()) == 0 ||
 238                                             strcmp(Prov.Arch(), "all") == 0 ||
 239                                             unlikely(strcmp(PPkg.Arch(), Prov.Arch()) == 0)) // packages have only on candidate, but just to be sure
 240                                                 continue;
 241                                         // see which architecture we prefer more and switch to it
 242                                         std::vector<std::string> archs = APT::Configuration::getArchitectures();
 243                                         if (std::find(archs.begin(), archs.end(), PPkg.Arch()) < std::find(archs.begin(), archs.end(), Prov.Arch()))
 244                                                 Prov = PPkg;
 245                                         continue;
 246                                 }
 247                                 found_one = false; // we found at least two
 248                                 break;
 249                         }
 250                 }
 251
 252                 if (found_one == true) {
 253                         ioprintf(out, _("Note, selecting '%s' instead of '%s'\n"),
 254                                  Prov.FullName(true).c_str(), Pkg.FullName(true).c_str());
 255                         return APT::VersionSet::FromPackage(Cache, Prov, select, *this);
 256                 }
 257                 return APT::VersionSet();
 258         }
 259
 260         inline bool allPkgNamedExplicitly() const { return explicitlyNamed; }
 261
 262 };
 263                                                                         /*}}}*/
 264
 265 #endif