apt-private/private-cacheset.h

   1 #ifndef APT_PRIVATE_CACHESET_H
   2 #define APT_PRIVATE_CACHESET_H
   3
   4 #include <apt-pkg/aptconfiguration.h>
   5 #include <apt-pkg/cachefile.h>
   6 #include <apt-pkg/cacheset.h>
   7 #include <apt-pkg/sptr.h>
   8 #include <apt-pkg/strutl.h>
   9 #include <apt-pkg/depcache.h>
  10 #include <apt-pkg/error.h>
  11 #include <apt-pkg/pkgcache.h>
  12 #include <apt-pkg/cacheiterators.h>
  13 #include <apt-pkg/macros.h>
  14
  15 #include <algorithm>
  16 #include <vector>
  17 #include <string.h>
  18 #include <list>
  19 #include <ostream>
  20 #include <set>
  21 #include <string>
  22 #include <utility>
  23
  24 #include "private-output.h"
  25
  26 #include <apti18n.h>
  27
  28 class OpProgress;
  29
  30 struct VersionSortDescriptionLocality
  31 {
  32    bool operator () (const pkgCache::VerIterator &v_lhs,
  33                      const pkgCache::VerIterator &v_rhs)
  34     {
  35         pkgCache::DescFile *A = v_lhs.TranslatedDescription().FileList();
  36         pkgCache::DescFile *B = v_rhs.TranslatedDescription().FileList();
  37         if (A == 0 && B == 0)
  38            return false;
  39
  40        if (A == 0)
  41           return true;
  42
  43        if (B == 0)
  44           return false;
  45
  46        if (A->File == B->File)
  47           return A->Offset < B->Offset;
  48
  49        return A->File < B->File;
  50     }
  51 };
  52
  53 // sorted by locality which makes iterating much faster
  54 typedef APT::VersionContainer<
  55    std::set<pkgCache::VerIterator,
  56             VersionSortDescriptionLocality> > LocalitySortedVersionSet;
  57
  58 class Matcher {
  59 public:
  60     virtual bool operator () (const pkgCache::PkgIterator &/*P*/) {
  61         return true;}
  62 };
  63
  64 // FIXME: add default argument for OpProgress (or overloaded function)
  65 bool GetLocalitySortedVersionSet(pkgCacheFile &CacheFile,
  66                                     APT::VersionContainerInterface * const vci,
  67                                     Matcher &matcher,
  68                                     OpProgress * const progress);
  69 bool GetLocalitySortedVersionSet(pkgCacheFile &CacheFile,
  70                                     APT::VersionContainerInterface * const vci,
  71                                     OpProgress * const progress);
  72
  73
  74 // CacheSetHelper saving virtual packages                               /*{{{*/
  75 class CacheSetHelperVirtuals: public APT::CacheSetHelper {
  76 public:
  77    APT::PackageSet virtualPkgs;
  78
  79    virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  80       virtualPkgs.insert(Pkg);
  81       return CacheSetHelper::canNotFindCandidateVer(Cache, Pkg);
  82    }
  83
  84    virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  85       virtualPkgs.insert(Pkg);
  86       return CacheSetHelper::canNotFindNewestVer(Cache, Pkg);
  87    }
  88
  89    virtual void canNotFindAllVer(APT::VersionContainerInterface * vci, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  90       virtualPkgs.insert(Pkg);
  91       CacheSetHelper::canNotFindAllVer(vci, Cache, Pkg);
  92    }
  93
  94    CacheSetHelperVirtuals(bool const ShowErrors = true, GlobalError::MsgType const &ErrorType = GlobalError::NOTICE) : CacheSetHelper(ShowErrors, ErrorType) {}
  95 };
  96                                                                         /*}}}*/
  97
  98 // CacheSetHelperAPTGet - responsible for message telling from the CacheSets/*{{{*/
  99 class CacheSetHelperAPTGet : public APT::CacheSetHelper {
 100         /** \brief stream message should be printed to */
 101         std::ostream &out;
 102         /** \brief were things like Task or RegEx used to select packages? */
 103         bool explicitlyNamed;
 104
 105         APT::PackageSet virtualPkgs;
 106
 107 public:
 108         std::list<std::pair<pkgCache::VerIterator, std::string> > selectedByRelease;
 109
 110         CacheSetHelperAPTGet(std::ostream &out) : APT::CacheSetHelper(true), out(out) {
 111                 explicitlyNamed = true;
 112         }
 113
 114         virtual void showTaskSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 115                 ioprintf(out, _("Note, selecting '%s' for task '%s'\n"),
 116                                 Pkg.FullName(true).c_str(), pattern.c_str());
 117                 explicitlyNamed = false;
 118         }
 119         virtual void showFnmatchSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 120                 ioprintf(out, _("Note, selecting '%s' for glob '%s'\n"),
 121                                 Pkg.FullName(true).c_str(), pattern.c_str());
 122                 explicitlyNamed = false;
 123         }
 124         virtual void showRegExSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 125                 ioprintf(out, _("Note, selecting '%s' for regex '%s'\n"),
 126                                 Pkg.FullName(true).c_str(), pattern.c_str());
 127                 explicitlyNamed = false;
 128         }
 129         virtual void showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/, pkgCache::VerIterator const Ver,
 130                                  std::string const &ver, bool const /*verIsRel*/) {
 131                 if (ver == Ver.VerStr())
 132                         return;
 133                 selectedByRelease.push_back(make_pair(Ver, ver));
 134         }
 135
 136         bool showVirtualPackageErrors(pkgCacheFile &Cache) {
 137                 if (virtualPkgs.empty() == true)
 138                         return true;
 139                 for (APT::PackageSet::const_iterator Pkg = virtualPkgs.begin();
 140                      Pkg != virtualPkgs.end(); ++Pkg) {
 141                         if (Pkg->ProvidesList != 0) {
 142                                 ioprintf(c1out,_("Package %s is a virtual package provided by:\n"),
 143                                          Pkg.FullName(true).c_str());
 144
 145                                 pkgCache::PrvIterator I = Pkg.ProvidesList();
 146                                 unsigned short provider = 0;
 147                                 for (; I.end() == false; ++I) {
 148                                         pkgCache::PkgIterator Pkg = I.OwnerPkg();
 149
 150                                         if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer()) {
 151                                                 c1out << "  " << Pkg.FullName(true) << " " << I.OwnerVer().VerStr();
 152                                                 if (Cache[Pkg].Install() == true && Cache[Pkg].NewInstall() == false)
 153                                                         c1out << _(" [Installed]");
 154                                                 c1out << std::endl;
 155                                                 ++provider;
 156                                         }
 157                                 }
 158                                 // if we found no candidate which provide this package, show non-candidates
 159                                 if (provider == 0)
 160                                         for (I = Pkg.ProvidesList(); I.end() == false; ++I)
 161                                                 c1out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
 162                                                       << _(" [Not candidate version]") << std::endl;
 163                                 else
 164                                    out << _("You should explicitly select one to install.") << std::endl;
 165                         } else {
 166                                 ioprintf(c1out,
 167                                         _("Package %s is not available, but is referred to by another package.\n"
 168                                           "This may mean that the package is missing, has been obsoleted, or\n"
 169                                           "is only available from another source\n"),Pkg.FullName(true).c_str());
 170
 171                                 std::string List;
 172                                 std::string VersionsList;
 173                                 SPtrArray<bool> Seen = new bool[Cache.GetPkgCache()->Head().PackageCount];
 174                                 memset(Seen,0,Cache.GetPkgCache()->Head().PackageCount*sizeof(*Seen));
 175                                 for (pkgCache::DepIterator Dep = Pkg.RevDependsList();
 176                                      Dep.end() == false; ++Dep) {
 177                                         if (Dep->Type != pkgCache::Dep::Replaces)
 178                                                 continue;
 179                                         if (Seen[Dep.ParentPkg()->ID] == true)
 180                                                 continue;
 181                                         Seen[Dep.ParentPkg()->ID] = true;
 182                                         List += Dep.ParentPkg().FullName(true) + " ";
 183                                         //VersionsList += std::string(Dep.ParentPkg().CurVersion) + "\n"; ???
 184                                 }
 185                                 ShowList(c1out,_("However the following packages replace it:"),List,VersionsList);
 186                         }
 187                         c1out << std::endl;
 188                 }
 189                 return false;
 190         }
 191
 192         virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 193                 APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::CANDIDATE);
 194                 if (verset.empty() == false)
 195                         return *(verset.begin());
 196                 else if (ShowError == true) {
 197                         _error->Error(_("Package '%s' has no installation candidate"),Pkg.FullName(true).c_str());
 198                         virtualPkgs.insert(Pkg);
 199                 }
 200                 return pkgCache::VerIterator(Cache, 0);
 201         }
 202
 203         virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 204                 if (Pkg->ProvidesList != 0)
 205                 {
 206                         APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::NEWEST);
 207                         if (verset.empty() == false)
 208                                 return *(verset.begin());
 209                         if (ShowError == true)
 210                                 ioprintf(out, _("Virtual packages like '%s' can't be removed\n"), Pkg.FullName(true).c_str());
 211                 }
 212                 else
 213                 {
 214                         pkgCache::GrpIterator Grp = Pkg.Group();
 215                         pkgCache::PkgIterator P = Grp.PackageList();
 216                         for (; P.end() != true; P = Grp.NextPkg(P))
 217                         {
 218                                 if (P == Pkg)
 219                                         continue;
 220                                 if (P->CurrentVer != 0) {
 221                                         // TRANSLATORS: Note, this is not an interactive question
 222                                         ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 223                                                  Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 224                                         break;
 225                                 }
 226                         }
 227                         if (P.end() == true)
 228                                 ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 229                 }
 230                 return pkgCache::VerIterator(Cache, 0);
 231         }
 232
 233         APT::VersionSet tryVirtualPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg,
 234                                                 APT::VersionSet::Version const &select) {
 235                 /* This is a pure virtual package and there is a single available
 236                    candidate providing it. */
 237                 if (unlikely(Cache[Pkg].CandidateVer != 0) || Pkg->ProvidesList == 0)
 238                         return APT::VersionSet();
 239
 240                 pkgCache::PkgIterator Prov;
 241                 bool found_one = false;
 242                 for (pkgCache::PrvIterator P = Pkg.ProvidesList(); P; ++P) {
 243                         pkgCache::VerIterator const PVer = P.OwnerVer();
 244                         pkgCache::PkgIterator const PPkg = PVer.ParentPkg();
 245
 246                         /* Ignore versions that are not a candidate. */
 247                         if (Cache[PPkg].CandidateVer != PVer)
 248                                 continue;
 249
 250                         if (found_one == false) {
 251                                 Prov = PPkg;
 252                                 found_one = true;
 253                         } else if (PPkg != Prov) {
 254                                 // same group, so it's a foreign package
 255                                 if (PPkg->Group == Prov->Group) {
 256                                         // do we already have the requested arch?
 257                                         if (strcmp(Pkg.Arch(), Prov.Arch()) == 0 ||
 258                                             strcmp(Prov.Arch(), "all") == 0 ||
 259                                             unlikely(strcmp(PPkg.Arch(), Prov.Arch()) == 0)) // packages have only on candidate, but just to be sure
 260                                                 continue;
 261                                         // see which architecture we prefer more and switch to it
 262                                         std::vector<std::string> archs = APT::Configuration::getArchitectures();
 263                                         if (std::find(archs.begin(), archs.end(), PPkg.Arch()) < std::find(archs.begin(), archs.end(), Prov.Arch()))
 264                                                 Prov = PPkg;
 265                                         continue;
 266                                 }
 267                                 found_one = false; // we found at least two
 268                                 break;
 269                         }
 270                 }
 271
 272                 if (found_one == true) {
 273                         ioprintf(out, _("Note, selecting '%s' instead of '%s'\n"),
 274                                  Prov.FullName(true).c_str(), Pkg.FullName(true).c_str());
 275                         return APT::VersionSet::FromPackage(Cache, Prov, select, *this);
 276                 }
 277                 return APT::VersionSet();
 278         }
 279
 280         inline bool allPkgNamedExplicitly() const { return explicitlyNamed; }
 281
 282 };
 283                                                                         /*}}}*/
 284
 285 #endif