apt-pkg/cacheset.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4
   5    Simple wrapper around a std::set to provide a similar interface to
   6    a set of cache structures as to the complete set of all structures
   7    in the pkgCache. Currently only Package is supported.
   8
   9    ##################################################################### */
  10                                                                         /*}}}*/
  11 // Include Files                                                        /*{{{*/
  12 #include <config.h>
  13
  14 #include <apt-pkg/aptconfiguration.h>
  15 #include <apt-pkg/cachefile.h>
  16 #include <apt-pkg/cachefilter.h>
  17 #include <apt-pkg/cacheset.h>
  18 #include <apt-pkg/error.h>
  19 #include <apt-pkg/strutl.h>
  20 #include <apt-pkg/versionmatch.h>
  21 #include <apt-pkg/pkgrecords.h>
  22 #include <apt-pkg/policy.h>
  23
  24 #include <vector>
  25
  26 #include <regex.h>
  27
  28 #include <apti18n.h>
  29                                                                         /*}}}*/
  30 namespace APT {
  31 // FromTask - Return all packages in the cache from a specific task     /*{{{*/
  32 bool PackageContainerInterface::FromTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
  33         size_t const archfound = pattern.find_last_of(':');
  34         std::string arch = "native";
  35         if (archfound != std::string::npos) {
  36                 arch = pattern.substr(archfound+1);
  37                 pattern.erase(archfound);
  38         }
  39
  40         if (pattern[pattern.length() -1] != '^')
  41                 return false;
  42         pattern.erase(pattern.length()-1);
  43
  44         if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
  45                 return false;
  46
  47         bool const wasEmpty = pci->empty();
  48         if (wasEmpty == true)
  49                 pci->setConstructor(TASK);
  50
  51         // get the records
  52         pkgRecords Recs(Cache);
  53
  54         // build regexp for the task
  55         regex_t Pattern;
  56         char S[300];
  57         snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
  58         if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
  59                 _error->Error("Failed to compile task regexp");
  60                 return false;
  61         }
  62
  63         bool found = false;
  64         for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
  65                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
  66                 if (Pkg.end() == true)
  67                         continue;
  68                 pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
  69                 if(ver.end() == true)
  70                         continue;
  71
  72                 pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
  73                 const char *start, *end;
  74                 parser.GetRec(start,end);
  75                 unsigned int const length = end - start;
  76                 char buf[length];
  77                 strncpy(buf, start, length);
  78                 buf[length-1] = '\0';
  79                 if (regexec(&Pattern, buf, 0, 0, 0) != 0)
  80                         continue;
  81
  82                 pci->insert(Pkg);
  83                 helper.showTaskSelection(Pkg, pattern);
  84                 found = true;
  85         }
  86         regfree(&Pattern);
  87
  88         if (found == false) {
  89                 helper.canNotFindTask(pci, Cache, pattern);
  90                 pci->setConstructor(UNKNOWN);
  91                 return false;
  92         }
  93
  94         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
  95                 pci->setConstructor(UNKNOWN);
  96
  97         return true;
  98 }
  99                                                                         /*}}}*/
 100 // FromRegEx - Return all packages in the cache matching a pattern      /*{{{*/
 101 bool PackageContainerInterface::FromRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
 102         static const char * const isregex = ".?+*|[^$";
 103         if (pattern.find_first_of(isregex) == std::string::npos)
 104                 return false;
 105
 106         bool const wasEmpty = pci->empty();
 107         if (wasEmpty == true)
 108                 pci->setConstructor(REGEX);
 109
 110         size_t archfound = pattern.find_last_of(':');
 111         std::string arch = "native";
 112         if (archfound != std::string::npos) {
 113                 arch = pattern.substr(archfound+1);
 114                 if (arch.find_first_of(isregex) == std::string::npos)
 115                         pattern.erase(archfound);
 116                 else
 117                         arch = "native";
 118         }
 119
 120         if (unlikely(Cache.GetPkgCache() == 0))
 121                 return false;
 122
 123         APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
 124
 125         bool found = false;
 126         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 127                 if (regexfilter(Grp) == false)
 128                         continue;
 129                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 130                 if (Pkg.end() == true) {
 131                         if (archfound == std::string::npos) {
 132                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 133                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 134                                      a != archs.end() && Pkg.end() != true; ++a)
 135                                         Pkg = Grp.FindPkg(*a);
 136                         }
 137                         if (Pkg.end() == true)
 138                                 continue;
 139                 }
 140
 141                 pci->insert(Pkg);
 142                 helper.showRegExSelection(Pkg, pattern);
 143                 found = true;
 144         }
 145
 146         if (found == false) {
 147                 helper.canNotFindRegEx(pci, Cache, pattern);
 148                 pci->setConstructor(UNKNOWN);
 149                 return false;
 150         }
 151
 152         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 153                 pci->setConstructor(UNKNOWN);
 154
 155         return true;
 156 }
 157                                                                         /*}}}*/
 158 // FromName - Returns the package defined  by this string               /*{{{*/
 159 pkgCache::PkgIterator PackageContainerInterface::FromName(pkgCacheFile &Cache,
 160                         std::string const &str, CacheSetHelper &helper) {
 161         std::string pkg = str;
 162         size_t archfound = pkg.find_last_of(':');
 163         std::string arch;
 164         if (archfound != std::string::npos) {
 165                 arch = pkg.substr(archfound+1);
 166                 pkg.erase(archfound);
 167         }
 168
 169         if (Cache.GetPkgCache() == 0)
 170                 return pkgCache::PkgIterator(Cache, 0);
 171
 172         pkgCache::PkgIterator Pkg(Cache, 0);
 173         if (arch.empty() == true) {
 174                 pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 175                 if (Grp.end() == false)
 176                         Pkg = Grp.FindPreferredPkg();
 177         } else
 178                 Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
 179
 180         if (Pkg.end() == true)
 181                 return helper.canNotFindPkgName(Cache, str);
 182         return Pkg;
 183 }
 184                                                                         /*}}}*/
 185 // FromGroup - Returns the package defined  by this string              /*{{{*/
 186 bool PackageContainerInterface::FromGroup(PackageContainerInterface * const pci, pkgCacheFile &Cache,
 187                         std::string pkg, CacheSetHelper &helper) {
 188         if (unlikely(Cache.GetPkgCache() == 0))
 189                 return false;
 190
 191         size_t const archfound = pkg.find_last_of(':');
 192         std::string arch;
 193         if (archfound != std::string::npos) {
 194                 arch = pkg.substr(archfound+1);
 195                 pkg.erase(archfound);
 196         }
 197
 198         pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 199         if (Grp.end() == false) {
 200                 if (arch.empty() == true) {
 201                         pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
 202                         if (Pkg.end() == false)
 203                         {
 204                            pci->insert(Pkg);
 205                            return true;
 206                         }
 207                 } else {
 208                         bool found = false;
 209                         // for 'linux-any' return the first package matching, for 'linux-*' return all matches
 210                         bool const isGlobal = arch.find('*') != std::string::npos;
 211                         APT::CacheFilter::PackageArchitectureMatchesSpecification pams(arch);
 212                         for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) {
 213                                 if (pams(Pkg) == false)
 214                                         continue;
 215                                 pci->insert(Pkg);
 216                                 found = true;
 217                                 if (isGlobal == false)
 218                                         break;
 219                         }
 220                         if (found == true)
 221                                 return true;
 222                 }
 223         }
 224
 225         pkgCache::PkgIterator Pkg = helper.canNotFindPkgName(Cache, pkg);
 226         if (Pkg.end() == true)
 227            return false;
 228
 229         pci->insert(Pkg);
 230         return true;
 231 }
 232                                                                         /*}}}*/
 233 // FromString - Return all packages matching a specific string          /*{{{*/
 234 bool PackageContainerInterface::FromString(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
 235         bool found = true;
 236         _error->PushToStack();
 237
 238         if (FromGroup(pci, Cache, str, helper) == false &&
 239                  FromTask(pci, Cache, str, helper) == false &&
 240                  FromRegEx(pci, Cache, str, helper) == false)
 241         {
 242                 helper.canNotFindPackage(pci, Cache, str);
 243                 found = false;
 244         }
 245
 246         if (found == true)
 247                 _error->RevertToStack();
 248         else
 249                 _error->MergeWithStack();
 250         return found;
 251 }
 252                                                                         /*}}}*/
 253 // FromCommandLine - Return all packages specified on commandline       /*{{{*/
 254 bool PackageContainerInterface::FromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
 255         bool found = false;
 256         for (const char **I = cmdline; *I != 0; ++I)
 257                 found |= PackageContainerInterface::FromString(pci, Cache, *I, helper);
 258         return found;
 259 }
 260                                                                         /*}}}*/
 261 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 262 bool PackageContainerInterface::FromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 263                                                         pkgCacheFile &Cache, const char * cmdline,
 264                                                         std::list<Modifier> const &mods, CacheSetHelper &helper) {
 265         std::string str = cmdline;
 266         unsigned short fallback = modID;
 267         bool modifierPresent = false;
 268         for (std::list<Modifier>::const_iterator mod = mods.begin();
 269              mod != mods.end(); ++mod) {
 270                 size_t const alength = strlen(mod->Alias);
 271                 switch(mod->Pos) {
 272                 case Modifier::POSTFIX:
 273                         if (str.compare(str.length() - alength, alength,
 274                                         mod->Alias, 0, alength) != 0)
 275                                 continue;
 276                         str.erase(str.length() - alength);
 277                         modID = mod->ID;
 278                         break;
 279                 case Modifier::PREFIX:
 280                         continue;
 281                 case Modifier::NONE:
 282                         continue;
 283                 }
 284                 modifierPresent = true;
 285                 break;
 286         }
 287         if (modifierPresent == true) {
 288                 bool const errors = helper.showErrors(false);
 289                 pkgCache::PkgIterator Pkg = FromName(Cache, cmdline, helper);
 290                 helper.showErrors(errors);
 291                 if (Pkg.end() == false) {
 292                         pci->insert(Pkg);
 293                         modID = fallback;
 294                         return true;
 295                 }
 296         }
 297         return FromString(pci, Cache, str, helper);
 298 }
 299                                                                         /*}}}*/
 300 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 301 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 302                                                         VersionContainerInterface * const vci,
 303                                                         pkgCacheFile &Cache, const char * cmdline,
 304                                                         std::list<Modifier> const &mods,
 305                                                         CacheSetHelper &helper) {
 306         Version select = NEWEST;
 307         std::string str = cmdline;
 308         bool modifierPresent = false;
 309         unsigned short fallback = modID;
 310         for (std::list<Modifier>::const_iterator mod = mods.begin();
 311              mod != mods.end(); ++mod) {
 312                 if (modID == fallback && mod->ID == fallback)
 313                         select = mod->SelectVersion;
 314                 size_t const alength = strlen(mod->Alias);
 315                 switch(mod->Pos) {
 316                 case Modifier::POSTFIX:
 317                         if (str.compare(str.length() - alength, alength,
 318                                         mod->Alias, 0, alength) != 0)
 319                                 continue;
 320                         str.erase(str.length() - alength);
 321                         modID = mod->ID;
 322                         select = mod->SelectVersion;
 323                         break;
 324                 case Modifier::PREFIX:
 325                         continue;
 326                 case Modifier::NONE:
 327                         continue;
 328                 }
 329                 modifierPresent = true;
 330                 break;
 331         }
 332         if (modifierPresent == true) {
 333                 bool const errors = helper.showErrors(false);
 334                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 335                 helper.showErrors(errors);
 336                 if (found == true) {
 337                         modID = fallback;
 338                         return true;
 339                 }
 340         }
 341         return FromString(vci, Cache, str, select, helper);
 342 }
 343                                                                         /*}}}*/
 344 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 345 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 346                                                 pkgCacheFile &Cache, const char **cmdline,
 347                                                 Version const &fallback, CacheSetHelper &helper) {
 348         bool found = false;
 349         for (const char **I = cmdline; *I != 0; ++I)
 350                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 351         return found;
 352 }
 353                                                                         /*}}}*/
 354 // FromString - Returns all versions spedcified by a string             /*{{{*/
 355 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 356                                            pkgCacheFile &Cache, std::string pkg,
 357                                            Version const &fallback, CacheSetHelper &helper,
 358                                            bool const onlyFromName) {
 359         std::string ver;
 360         bool verIsRel = false;
 361         size_t const vertag = pkg.find_last_of("/=");
 362         if (vertag != std::string::npos) {
 363                 ver = pkg.substr(vertag+1);
 364                 verIsRel = (pkg[vertag] == '/');
 365                 pkg.erase(vertag);
 366         }
 367         PackageSet pkgset;
 368         if (onlyFromName == false)
 369                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 370         else {
 371                 pkgset.insert(PackageContainerInterface::FromName(Cache, pkg, helper));
 372         }
 373
 374         bool errors = true;
 375         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 376                 errors = helper.showErrors(false);
 377
 378         bool found = false;
 379         for (PackageSet::const_iterator P = pkgset.begin();
 380              P != pkgset.end(); ++P) {
 381                 if (vertag == std::string::npos) {
 382                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 383                         continue;
 384                 }
 385                 pkgCache::VerIterator V;
 386                 if (ver == "installed")
 387                         V = getInstalledVer(Cache, P, helper);
 388                 else if (ver == "candidate")
 389                         V = getCandidateVer(Cache, P, helper);
 390                 else if (ver == "newest") {
 391                         if (P->VersionList != 0)
 392                                 V = P.VersionList();
 393                         else
 394                                 V = helper.canNotFindNewestVer(Cache, P);
 395                 } else {
 396                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 397                                         pkgVersionMatch::Version));
 398                         V = Match.Find(P);
 399                         if (V.end() == true) {
 400                                 if (verIsRel == true)
 401                                         _error->Error(_("Release '%s' for '%s' was not found"),
 402                                                         ver.c_str(), P.FullName(true).c_str());
 403                                 else
 404                                         _error->Error(_("Version '%s' for '%s' was not found"),
 405                                                         ver.c_str(), P.FullName(true).c_str());
 406                                 continue;
 407                         }
 408                 }
 409                 if (V.end() == true)
 410                         continue;
 411                 helper.showSelectedVersion(P, V, ver, verIsRel);
 412                 vci->insert(V);
 413                 found = true;
 414         }
 415         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 416                 helper.showErrors(errors);
 417         return found;
 418 }
 419                                                                         /*}}}*/
 420 // FromPackage - versions from package based on fallback                /*{{{*/
 421 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 422                                             pkgCacheFile &Cache,
 423                                             pkgCache::PkgIterator const &P,
 424                                             Version const &fallback,
 425                                             CacheSetHelper &helper) {
 426         pkgCache::VerIterator V;
 427         bool showErrors;
 428         bool found = false;
 429         switch(fallback) {
 430         case ALL:
 431                 if (P->VersionList != 0)
 432                         for (V = P.VersionList(); V.end() != true; ++V)
 433                                 found |= vci->insert(V);
 434                 else
 435                         helper.canNotFindAllVer(vci, Cache, P);
 436                 break;
 437         case CANDANDINST:
 438                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 439                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 440                 break;
 441         case CANDIDATE:
 442                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 443                 break;
 444         case INSTALLED:
 445                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 446                 break;
 447         case CANDINST:
 448                 showErrors = helper.showErrors(false);
 449                 V = getCandidateVer(Cache, P, helper);
 450                 if (V.end() == true)
 451                         V = getInstalledVer(Cache, P, helper);
 452                 helper.showErrors(showErrors);
 453                 if (V.end() == false)
 454                         found |= vci->insert(V);
 455                 else
 456                         helper.canNotFindInstCandVer(vci, Cache, P);
 457                 break;
 458         case INSTCAND:
 459                 showErrors = helper.showErrors(false);
 460                 V = getInstalledVer(Cache, P, helper);
 461                 if (V.end() == true)
 462                         V = getCandidateVer(Cache, P, helper);
 463                 helper.showErrors(showErrors);
 464                 if (V.end() == false)
 465                         found |= vci->insert(V);
 466                 else
 467                         helper.canNotFindInstCandVer(vci, Cache, P);
 468                 break;
 469         case NEWEST:
 470                 if (P->VersionList != 0)
 471                         found |= vci->insert(P.VersionList());
 472                 else
 473                         helper.canNotFindNewestVer(Cache, P);
 474                 break;
 475         }
 476         return found;
 477 }
 478                                                                         /*}}}*/
 479 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 480 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 481                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 482         pkgCache::VerIterator Cand;
 483         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 484                 if (unlikely(Cache.GetPolicy() == 0))
 485                         return pkgCache::VerIterator(Cache);
 486                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 487         } else {
 488                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 489         }
 490         if (Cand.end() == true)
 491                 return helper.canNotFindCandidateVer(Cache, Pkg);
 492         return Cand;
 493 }
 494                                                                         /*}}}*/
 495 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 496 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 497                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 498         if (Pkg->CurrentVer == 0)
 499                 return helper.canNotFindInstalledVer(Cache, Pkg);
 500         return Pkg.CurrentVer();
 501 }
 502                                                                         /*}}}*/
 503
 504 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 505 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 506                         std::string const &str) {
 507         if (ShowError == true)
 508                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 509         return pkgCache::PkgIterator(Cache, 0);
 510 }
 511                                                                         /*}}}*/
 512 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 513 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 514         if (ShowError == true)
 515                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 516 }
 517                                                                         /*}}}*/
 518 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 519 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 520         if (ShowError == true)
 521                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 522 }
 523                                                                         /*}}}*/
 524 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 525 void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str) {
 526 }
 527                                                                         /*}}}*/
 528 // canNotFindAllVer                                                     /*{{{*/
 529 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const vci, pkgCacheFile &Cache,
 530                 pkgCache::PkgIterator const &Pkg) {
 531         if (ShowError == true)
 532                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 533 }
 534                                                                         /*}}}*/
 535 // canNotFindInstCandVer                                                /*{{{*/
 536 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const vci, pkgCacheFile &Cache,
 537                 pkgCache::PkgIterator const &Pkg) {
 538         if (ShowError == true)
 539                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 540 }
 541                                                                         /*}}}*/
 542 // canNotFindInstCandVer                                                /*{{{*/
 543 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const vci, pkgCacheFile &Cache,
 544                 pkgCache::PkgIterator const &Pkg) {
 545         if (ShowError == true)
 546                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 547 }
 548                                                                         /*}}}*/
 549 // canNotFindNewestVer                                                  /*{{{*/
 550 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 551                 pkgCache::PkgIterator const &Pkg) {
 552         if (ShowError == true)
 553                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 554         return pkgCache::VerIterator(Cache, 0);
 555 }
 556                                                                         /*}}}*/
 557 // canNotFindCandidateVer                                               /*{{{*/
 558 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 559                 pkgCache::PkgIterator const &Pkg) {
 560         if (ShowError == true)
 561                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 562         return pkgCache::VerIterator(Cache, 0);
 563 }
 564                                                                         /*}}}*/
 565 // canNotFindInstalledVer                                               /*{{{*/
 566 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 567                 pkgCache::PkgIterator const &Pkg) {
 568         if (ShowError == true)
 569                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 570         return pkgCache::VerIterator(Cache, 0);
 571 }
 572                                                                         /*}}}*/
 573 // showTaskSelection                                                    /*{{{*/
 574 void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &pkg,
 575                                        std::string const &pattern) {
 576 }
 577                                                                         /*}}}*/
 578 // showRegExSelection                                                   /*{{{*/
 579 void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &pkg,
 580                                         std::string const &pattern) {
 581 }
 582                                                                         /*}}}*/
 583 // showSelectedVersion                                                  /*{{{*/
 584 void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &Pkg,
 585                                          pkgCache::VerIterator const Ver,
 586                                          std::string const &ver,
 587                                          bool const verIsRel) {
 588 }
 589                                                                         /*}}}*/
 590 }