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 canNotGetVersion(enum CacheSetHelper::VerSelector const select, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  80       if (select == NEWEST || select == CANDIDATE || select == ALL)
  81          virtualPkgs.insert(Pkg);
  82       return CacheSetHelper::canNotGetVersion(select, Cache, Pkg);
  83    }
  84
  85    virtual void canNotFindVersion(enum CacheSetHelper::VerSelector const select, APT::VersionContainerInterface * vci, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
  86       if (select == NEWEST || select == CANDIDATE || select == ALL)
  87          virtualPkgs.insert(Pkg);
  88       return CacheSetHelper::canNotFindVersion(select, vci, Cache, Pkg);
  89    }
  90
  91    CacheSetHelperVirtuals(bool const ShowErrors = true, GlobalError::MsgType const &ErrorType = GlobalError::NOTICE) : CacheSetHelper(ShowErrors, ErrorType) {}
  92 };
  93                                                                         /*}}}*/
  94
  95 // CacheSetHelperAPTGet - responsible for message telling from the CacheSets/*{{{*/
  96 class CacheSetHelperAPTGet : public APT::CacheSetHelper {
  97         /** \brief stream message should be printed to */
  98         std::ostream &out;
  99         /** \brief were things like Task or RegEx used to select packages? */
 100         bool explicitlyNamed;
 101
 102         APT::PackageSet virtualPkgs;
 103
 104 public:
 105         std::list<std::pair<pkgCache::VerIterator, std::string> > selectedByRelease;
 106
 107         CacheSetHelperAPTGet(std::ostream &out) : APT::CacheSetHelper(true), out(out) {
 108                 explicitlyNamed = true;
 109         }
 110
 111         virtual void showTaskSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 112                 ioprintf(out, _("Note, selecting '%s' for task '%s'\n"),
 113                                 Pkg.FullName(true).c_str(), pattern.c_str());
 114                 explicitlyNamed = false;
 115         }
 116         virtual void showFnmatchSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 117                 ioprintf(out, _("Note, selecting '%s' for glob '%s'\n"),
 118                                 Pkg.FullName(true).c_str(), pattern.c_str());
 119                 explicitlyNamed = false;
 120         }
 121         virtual void showRegExSelection(pkgCache::PkgIterator const &Pkg, std::string const &pattern) {
 122                 ioprintf(out, _("Note, selecting '%s' for regex '%s'\n"),
 123                                 Pkg.FullName(true).c_str(), pattern.c_str());
 124                 explicitlyNamed = false;
 125         }
 126         virtual void showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/, pkgCache::VerIterator const Ver,
 127                                  std::string const &ver, bool const /*verIsRel*/) {
 128                 if (ver == Ver.VerStr())
 129                         return;
 130                 selectedByRelease.push_back(make_pair(Ver, ver));
 131         }
 132
 133         bool showVirtualPackageErrors(pkgCacheFile &Cache) {
 134                 if (virtualPkgs.empty() == true)
 135                         return true;
 136                 for (APT::PackageSet::const_iterator Pkg = virtualPkgs.begin();
 137                      Pkg != virtualPkgs.end(); ++Pkg) {
 138                         if (Pkg->ProvidesList != 0) {
 139                                 ioprintf(c1out,_("Package %s is a virtual package provided by:\n"),
 140                                          Pkg.FullName(true).c_str());
 141
 142                                 pkgCache::PrvIterator I = Pkg.ProvidesList();
 143                                 unsigned short provider = 0;
 144                                 for (; I.end() == false; ++I) {
 145                                         pkgCache::PkgIterator Pkg = I.OwnerPkg();
 146
 147                                         if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer()) {
 148                                                 c1out << "  " << Pkg.FullName(true) << " " << I.OwnerVer().VerStr();
 149                                                 if (Cache[Pkg].Install() == true && Cache[Pkg].NewInstall() == false)
 150                                                         c1out << _(" [Installed]");
 151                                                 c1out << std::endl;
 152                                                 ++provider;
 153                                         }
 154                                 }
 155                                 // if we found no candidate which provide this package, show non-candidates
 156                                 if (provider == 0)
 157                                         for (I = Pkg.ProvidesList(); I.end() == false; ++I)
 158                                                 c1out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
 159                                                       << _(" [Not candidate version]") << std::endl;
 160                                 else
 161                                    out << _("You should explicitly select one to install.") << std::endl;
 162                         } else {
 163                                 ioprintf(c1out,
 164                                         _("Package %s is not available, but is referred to by another package.\n"
 165                                           "This may mean that the package is missing, has been obsoleted, or\n"
 166                                           "is only available from another source\n"),Pkg.FullName(true).c_str());
 167
 168                                 std::string List;
 169                                 std::string VersionsList;
 170                                 SPtrArray<bool> Seen = new bool[Cache.GetPkgCache()->Head().PackageCount];
 171                                 memset(Seen,0,Cache.GetPkgCache()->Head().PackageCount*sizeof(*Seen));
 172                                 for (pkgCache::DepIterator Dep = Pkg.RevDependsList();
 173                                      Dep.end() == false; ++Dep) {
 174                                         if (Dep->Type != pkgCache::Dep::Replaces)
 175                                                 continue;
 176                                         if (Seen[Dep.ParentPkg()->ID] == true)
 177                                                 continue;
 178                                         Seen[Dep.ParentPkg()->ID] = true;
 179                                         List += Dep.ParentPkg().FullName(true) + " ";
 180                                         //VersionsList += std::string(Dep.ParentPkg().CurVersion) + "\n"; ???
 181                                 }
 182                                 ShowList(c1out,_("However the following packages replace it:"),List,VersionsList);
 183                         }
 184                         c1out << std::endl;
 185                 }
 186                 return false;
 187         }
 188
 189         virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 190                 APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, CacheSetHelper::CANDIDATE);
 191                 if (verset.empty() == false)
 192                         return *(verset.begin());
 193                 else if (ShowError == true) {
 194                         _error->Error(_("Package '%s' has no installation candidate"),Pkg.FullName(true).c_str());
 195                         virtualPkgs.insert(Pkg);
 196                 }
 197                 return pkgCache::VerIterator(Cache, 0);
 198         }
 199
 200         virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 201                 if (Pkg->ProvidesList != 0)
 202                 {
 203                         APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, CacheSetHelper::NEWEST);
 204                         if (verset.empty() == false)
 205                                 return *(verset.begin());
 206                         if (ShowError == true)
 207                                 ioprintf(out, _("Virtual packages like '%s' can't be removed\n"), Pkg.FullName(true).c_str());
 208                 }
 209                 else
 210                 {
 211                         pkgCache::GrpIterator Grp = Pkg.Group();
 212                         pkgCache::PkgIterator P = Grp.PackageList();
 213                         for (; P.end() != true; P = Grp.NextPkg(P))
 214                         {
 215                                 if (P == Pkg)
 216                                         continue;
 217                                 if (P->CurrentVer != 0) {
 218                                         // TRANSLATORS: Note, this is not an interactive question
 219                                         ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
 220                                                  Pkg.FullName(true).c_str(), P.FullName(true).c_str());
 221                                         break;
 222                                 }
 223                         }
 224                         if (P.end() == true)
 225                                 ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
 226                 }
 227                 return pkgCache::VerIterator(Cache, 0);
 228         }
 229
 230         APT::VersionSet tryVirtualPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg,
 231                                                 CacheSetHelper::VerSelector const select) {
 232                 /* This is a pure virtual package and there is a single available
 233                    candidate providing it. */
 234                 if (unlikely(Cache[Pkg].CandidateVer != 0) || Pkg->ProvidesList == 0)
 235                         return APT::VersionSet();
 236
 237                 pkgCache::PkgIterator Prov;
 238                 bool found_one = false;
 239                 for (pkgCache::PrvIterator P = Pkg.ProvidesList(); P; ++P) {
 240                         pkgCache::VerIterator const PVer = P.OwnerVer();
 241                         pkgCache::PkgIterator const PPkg = PVer.ParentPkg();
 242
 243                         /* Ignore versions that are not a candidate. */
 244                         if (Cache[PPkg].CandidateVer != PVer)
 245                                 continue;
 246
 247                         if (found_one == false) {
 248                                 Prov = PPkg;
 249                                 found_one = true;
 250                         } else if (PPkg != Prov) {
 251                                 // same group, so it's a foreign package
 252                                 if (PPkg->Group == Prov->Group) {
 253                                         // do we already have the requested arch?
 254                                         if (strcmp(Pkg.Arch(), Prov.Arch()) == 0 ||
 255                                             strcmp(Prov.Arch(), "all") == 0 ||
 256                                             unlikely(strcmp(PPkg.Arch(), Prov.Arch()) == 0)) // packages have only on candidate, but just to be sure
 257                                                 continue;
 258                                         // see which architecture we prefer more and switch to it
 259                                         std::vector<std::string> archs = APT::Configuration::getArchitectures();
 260                                         if (std::find(archs.begin(), archs.end(), PPkg.Arch()) < std::find(archs.begin(), archs.end(), Prov.Arch()))
 261                                                 Prov = PPkg;
 262                                         continue;
 263                                 }
 264                                 found_one = false; // we found at least two
 265                                 break;
 266                         }
 267                 }
 268
 269                 if (found_one == true) {
 270                         ioprintf(out, _("Note, selecting '%s' instead of '%s'\n"),
 271                                  Prov.FullName(true).c_str(), Pkg.FullName(true).c_str());
 272                         return APT::VersionSet::FromPackage(Cache, Prov, select, *this);
 273                 }
 274                 return APT::VersionSet();
 275         }
 276
 277         inline bool allPkgNamedExplicitly() const { return explicitlyNamed; }
 278
 279 };
 280                                                                         /*}}}*/
 281
 282 #endif