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                 if (unlikely(length == 0))
  77                    continue;
  78                 char buf[length];
  79                 strncpy(buf, start, length);
  80                 buf[length-1] = '\0';
  81                 if (regexec(&Pattern, buf, 0, 0, 0) != 0)
  82                         continue;
  83
  84                 pci->insert(Pkg);
  85                 helper.showTaskSelection(Pkg, pattern);
  86                 found = true;
  87         }
  88         regfree(&Pattern);
  89
  90         if (found == false) {
  91                 helper.canNotFindTask(pci, Cache, pattern);
  92                 pci->setConstructor(UNKNOWN);
  93                 return false;
  94         }
  95
  96         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
  97                 pci->setConstructor(UNKNOWN);
  98
  99         return true;
 100 }
 101                                                                         /*}}}*/
 102 // FromRegEx - Return all packages in the cache matching a pattern      /*{{{*/
 103 bool PackageContainerInterface::FromRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
 104         static const char * const isregex = ".?+*|[^$";
 105         if (pattern.find_first_of(isregex) == std::string::npos)
 106                 return false;
 107
 108         bool const wasEmpty = pci->empty();
 109         if (wasEmpty == true)
 110                 pci->setConstructor(REGEX);
 111
 112         size_t archfound = pattern.find_last_of(':');
 113         std::string arch = "native";
 114         if (archfound != std::string::npos) {
 115                 arch = pattern.substr(archfound+1);
 116                 if (arch.find_first_of(isregex) == std::string::npos)
 117                         pattern.erase(archfound);
 118                 else
 119                         arch = "native";
 120         }
 121
 122         if (unlikely(Cache.GetPkgCache() == 0))
 123                 return false;
 124
 125         APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
 126
 127         bool found = false;
 128         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 129                 if (regexfilter(Grp) == false)
 130                         continue;
 131                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 132                 if (Pkg.end() == true) {
 133                         if (archfound == std::string::npos) {
 134                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 135                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 136                                      a != archs.end() && Pkg.end() != true; ++a)
 137                                         Pkg = Grp.FindPkg(*a);
 138                         }
 139                         if (Pkg.end() == true)
 140                                 continue;
 141                 }
 142
 143                 pci->insert(Pkg);
 144                 helper.showRegExSelection(Pkg, pattern);
 145                 found = true;
 146         }
 147
 148         if (found == false) {
 149                 helper.canNotFindRegEx(pci, Cache, pattern);
 150                 pci->setConstructor(UNKNOWN);
 151                 return false;
 152         }
 153
 154         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 155                 pci->setConstructor(UNKNOWN);
 156
 157         return true;
 158 }
 159                                                                         /*}}}*/
 160 // FromFnmatch - Returns the package defined  by this fnmatch           /*{{{*/
 161 bool
 162 PackageContainerInterface::FromFnmatch(PackageContainerInterface * const pci,
 163                                        pkgCacheFile &Cache,
 164                                        std::string pattern,
 165                                        CacheSetHelper &helper)
 166 {
 167         static const char * const isfnmatch = ".?*[]!";
 168         if (pattern.find_first_of(isfnmatch) == std::string::npos)
 169                 return false;
 170
 171         bool const wasEmpty = pci->empty();
 172         if (wasEmpty == true)
 173                 pci->setConstructor(FNMATCH);
 174
 175         size_t archfound = pattern.find_last_of(':');
 176         std::string arch = "native";
 177         if (archfound != std::string::npos) {
 178                 arch = pattern.substr(archfound+1);
 179                 if (arch.find_first_of(isfnmatch) == std::string::npos)
 180                         pattern.erase(archfound);
 181                 else
 182                         arch = "native";
 183         }
 184
 185         if (unlikely(Cache.GetPkgCache() == 0))
 186                 return false;
 187
 188         APT::CacheFilter::PackageNameMatchesFnmatch filter(pattern);
 189
 190         bool found = false;
 191         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 192                 if (filter(Grp) == false)
 193                         continue;
 194                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 195                 if (Pkg.end() == true) {
 196                         if (archfound == std::string::npos) {
 197                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 198                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 199                                      a != archs.end() && Pkg.end() != true; ++a)
 200                                         Pkg = Grp.FindPkg(*a);
 201                         }
 202                         if (Pkg.end() == true)
 203                                 continue;
 204                 }
 205
 206                 pci->insert(Pkg);
 207 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 208                 helper.showFnmatchSelection(Pkg, pattern);
 209 #else
 210                 helper.showRegExSelection(Pkg, pattern);
 211 #endif
 212                 found = true;
 213         }
 214
 215         if (found == false) {
 216 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 217                 helper.canNotFindFnmatch(pci, Cache, pattern);
 218 #else
 219                 helper.canNotFindRegEx(pci, Cache, pattern);
 220 #endif
 221                 pci->setConstructor(UNKNOWN);
 222                 return false;
 223         }
 224
 225         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 226                 pci->setConstructor(UNKNOWN);
 227
 228         return true;
 229 }
 230                                                                         /*}}}*/
 231 // FromName - Returns the package defined  by this string               /*{{{*/
 232 pkgCache::PkgIterator PackageContainerInterface::FromName(pkgCacheFile &Cache,
 233                         std::string const &str, CacheSetHelper &helper) {
 234         std::string pkg = str;
 235         size_t archfound = pkg.find_last_of(':');
 236         std::string arch;
 237         if (archfound != std::string::npos) {
 238                 arch = pkg.substr(archfound+1);
 239                 pkg.erase(archfound);
 240         }
 241
 242         if (Cache.GetPkgCache() == 0)
 243                 return pkgCache::PkgIterator(Cache, 0);
 244
 245         pkgCache::PkgIterator Pkg(Cache, 0);
 246         if (arch.empty() == true) {
 247                 pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 248                 if (Grp.end() == false)
 249                         Pkg = Grp.FindPreferredPkg();
 250         } else
 251                 Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
 252
 253         if (Pkg.end() == true)
 254                 return helper.canNotFindPkgName(Cache, str);
 255         return Pkg;
 256 }
 257                                                                         /*}}}*/
 258 // FromGroup - Returns the package defined  by this string              /*{{{*/
 259 bool PackageContainerInterface::FromGroup(PackageContainerInterface * const pci, pkgCacheFile &Cache,
 260                         std::string pkg, CacheSetHelper &helper) {
 261         if (unlikely(Cache.GetPkgCache() == 0))
 262                 return false;
 263
 264         size_t const archfound = pkg.find_last_of(':');
 265         std::string arch;
 266         if (archfound != std::string::npos) {
 267                 arch = pkg.substr(archfound+1);
 268                 pkg.erase(archfound);
 269                 if (arch == "all" || arch == "native")
 270                         arch = _config->Find("APT::Architecture");
 271         }
 272
 273         pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 274         if (Grp.end() == false) {
 275                 if (arch.empty() == true) {
 276                         pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
 277                         if (Pkg.end() == false)
 278                         {
 279                            pci->insert(Pkg);
 280                            return true;
 281                         }
 282                 } else {
 283                         bool found = false;
 284                         // for 'linux-any' return the first package matching, for 'linux-*' return all matches
 285                         bool const isGlobal = arch.find('*') != std::string::npos;
 286                         APT::CacheFilter::PackageArchitectureMatchesSpecification pams(arch);
 287                         for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) {
 288                                 if (pams(Pkg) == false)
 289                                         continue;
 290                                 pci->insert(Pkg);
 291                                 found = true;
 292                                 if (isGlobal == false)
 293                                         break;
 294                         }
 295                         if (found == true)
 296                                 return true;
 297                 }
 298         }
 299
 300         pkgCache::PkgIterator Pkg = helper.canNotFindPkgName(Cache, pkg);
 301         if (Pkg.end() == true)
 302            return false;
 303
 304         pci->insert(Pkg);
 305         return true;
 306 }
 307                                                                         /*}}}*/
 308 // FromString - Return all packages matching a specific string          /*{{{*/
 309 bool PackageContainerInterface::FromString(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
 310         bool found = true;
 311         _error->PushToStack();
 312
 313         if (FromGroup(pci, Cache, str, helper) == false &&
 314                  FromTask(pci, Cache, str, helper) == false &&
 315                  FromRegEx(pci, Cache, str, helper) == false)
 316         {
 317                 helper.canNotFindPackage(pci, Cache, str);
 318                 found = false;
 319         }
 320
 321         if (found == true)
 322                 _error->RevertToStack();
 323         else
 324                 _error->MergeWithStack();
 325         return found;
 326 }
 327                                                                         /*}}}*/
 328 // FromCommandLine - Return all packages specified on commandline       /*{{{*/
 329 bool PackageContainerInterface::FromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
 330         bool found = false;
 331         for (const char **I = cmdline; *I != 0; ++I)
 332                 found |= PackageContainerInterface::FromString(pci, Cache, *I, helper);
 333         return found;
 334 }
 335                                                                         /*}}}*/
 336 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 337 bool PackageContainerInterface::FromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 338                                                         pkgCacheFile &Cache, const char * cmdline,
 339                                                         std::list<Modifier> const &mods, CacheSetHelper &helper) {
 340         std::string str = cmdline;
 341         unsigned short fallback = modID;
 342         bool modifierPresent = false;
 343         for (std::list<Modifier>::const_iterator mod = mods.begin();
 344              mod != mods.end(); ++mod) {
 345                 size_t const alength = strlen(mod->Alias);
 346                 switch(mod->Pos) {
 347                 case Modifier::POSTFIX:
 348                         if (str.compare(str.length() - alength, alength,
 349                                         mod->Alias, 0, alength) != 0)
 350                                 continue;
 351                         str.erase(str.length() - alength);
 352                         modID = mod->ID;
 353                         break;
 354                 case Modifier::PREFIX:
 355                         continue;
 356                 case Modifier::NONE:
 357                         continue;
 358                 }
 359                 modifierPresent = true;
 360                 break;
 361         }
 362         if (modifierPresent == true) {
 363                 bool const errors = helper.showErrors(false);
 364                 pkgCache::PkgIterator Pkg = FromName(Cache, cmdline, helper);
 365                 helper.showErrors(errors);
 366                 if (Pkg.end() == false) {
 367                         pci->insert(Pkg);
 368                         modID = fallback;
 369                         return true;
 370                 }
 371         }
 372         return FromString(pci, Cache, str, helper);
 373 }
 374                                                                         /*}}}*/
 375 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 376 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 377                                                         VersionContainerInterface * const vci,
 378                                                         pkgCacheFile &Cache, const char * cmdline,
 379                                                         std::list<Modifier> const &mods,
 380                                                         CacheSetHelper &helper) {
 381         Version select = NEWEST;
 382         std::string str = cmdline;
 383         bool modifierPresent = false;
 384         unsigned short fallback = modID;
 385         for (std::list<Modifier>::const_iterator mod = mods.begin();
 386              mod != mods.end(); ++mod) {
 387                 if (modID == fallback && mod->ID == fallback)
 388                         select = mod->SelectVersion;
 389                 size_t const alength = strlen(mod->Alias);
 390                 switch(mod->Pos) {
 391                 case Modifier::POSTFIX:
 392                         if (str.compare(str.length() - alength, alength,
 393                                         mod->Alias, 0, alength) != 0)
 394                                 continue;
 395                         str.erase(str.length() - alength);
 396                         modID = mod->ID;
 397                         select = mod->SelectVersion;
 398                         break;
 399                 case Modifier::PREFIX:
 400                         continue;
 401                 case Modifier::NONE:
 402                         continue;
 403                 }
 404                 modifierPresent = true;
 405                 break;
 406         }
 407         if (modifierPresent == true) {
 408                 bool const errors = helper.showErrors(false);
 409                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 410                 helper.showErrors(errors);
 411                 if (found == true) {
 412                         modID = fallback;
 413                         return true;
 414                 }
 415         }
 416         return FromString(vci, Cache, str, select, helper);
 417 }
 418                                                                         /*}}}*/
 419 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 420 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 421                                                 pkgCacheFile &Cache, const char **cmdline,
 422                                                 Version const &fallback, CacheSetHelper &helper) {
 423         bool found = false;
 424         for (const char **I = cmdline; *I != 0; ++I)
 425                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 426         return found;
 427 }
 428                                                                         /*}}}*/
 429 // FromString - Returns all versions spedcified by a string             /*{{{*/
 430 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 431                                            pkgCacheFile &Cache, std::string pkg,
 432                                            Version const &fallback, CacheSetHelper &helper,
 433                                            bool const onlyFromName) {
 434         std::string ver;
 435         bool verIsRel = false;
 436         size_t const vertag = pkg.find_last_of("/=");
 437         if (vertag != std::string::npos) {
 438                 ver = pkg.substr(vertag+1);
 439                 verIsRel = (pkg[vertag] == '/');
 440                 pkg.erase(vertag);
 441         }
 442         PackageSet pkgset;
 443         if (onlyFromName == false)
 444                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 445         else {
 446                 pkgset.insert(PackageContainerInterface::FromName(Cache, pkg, helper));
 447         }
 448
 449         bool errors = true;
 450         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 451                 errors = helper.showErrors(false);
 452
 453         bool found = false;
 454         for (PackageSet::const_iterator P = pkgset.begin();
 455              P != pkgset.end(); ++P) {
 456                 if (vertag == std::string::npos) {
 457                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 458                         continue;
 459                 }
 460                 pkgCache::VerIterator V;
 461                 if (ver == "installed")
 462                         V = getInstalledVer(Cache, P, helper);
 463                 else if (ver == "candidate")
 464                         V = getCandidateVer(Cache, P, helper);
 465                 else if (ver == "newest") {
 466                         if (P->VersionList != 0)
 467                                 V = P.VersionList();
 468                         else
 469                                 V = helper.canNotFindNewestVer(Cache, P);
 470                 } else {
 471                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 472                                         pkgVersionMatch::Version));
 473                         V = Match.Find(P);
 474                         if (V.end() == true) {
 475                                 if (verIsRel == true)
 476                                         _error->Error(_("Release '%s' for '%s' was not found"),
 477                                                         ver.c_str(), P.FullName(true).c_str());
 478                                 else
 479                                         _error->Error(_("Version '%s' for '%s' was not found"),
 480                                                         ver.c_str(), P.FullName(true).c_str());
 481                                 continue;
 482                         }
 483                 }
 484                 if (V.end() == true)
 485                         continue;
 486                 helper.showSelectedVersion(P, V, ver, verIsRel);
 487                 vci->insert(V);
 488                 found = true;
 489         }
 490         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 491                 helper.showErrors(errors);
 492         return found;
 493 }
 494                                                                         /*}}}*/
 495 // FromPackage - versions from package based on fallback                /*{{{*/
 496 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 497                                             pkgCacheFile &Cache,
 498                                             pkgCache::PkgIterator const &P,
 499                                             Version const &fallback,
 500                                             CacheSetHelper &helper) {
 501         pkgCache::VerIterator V;
 502         bool showErrors;
 503         bool found = false;
 504         switch(fallback) {
 505         case ALL:
 506                 if (P->VersionList != 0)
 507                         for (V = P.VersionList(); V.end() != true; ++V)
 508                                 found |= vci->insert(V);
 509                 else
 510                         helper.canNotFindAllVer(vci, Cache, P);
 511                 break;
 512         case CANDANDINST:
 513                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 514                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 515                 break;
 516         case CANDIDATE:
 517                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 518                 break;
 519         case INSTALLED:
 520                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 521                 break;
 522         case CANDINST:
 523                 showErrors = helper.showErrors(false);
 524                 V = getCandidateVer(Cache, P, helper);
 525                 if (V.end() == true)
 526                         V = getInstalledVer(Cache, P, helper);
 527                 helper.showErrors(showErrors);
 528                 if (V.end() == false)
 529                         found |= vci->insert(V);
 530                 else
 531                         helper.canNotFindInstCandVer(vci, Cache, P);
 532                 break;
 533         case INSTCAND:
 534                 showErrors = helper.showErrors(false);
 535                 V = getInstalledVer(Cache, P, helper);
 536                 if (V.end() == true)
 537                         V = getCandidateVer(Cache, P, helper);
 538                 helper.showErrors(showErrors);
 539                 if (V.end() == false)
 540                         found |= vci->insert(V);
 541                 else
 542                         helper.canNotFindInstCandVer(vci, Cache, P);
 543                 break;
 544         case NEWEST:
 545                 if (P->VersionList != 0)
 546                         found |= vci->insert(P.VersionList());
 547                 else
 548                         helper.canNotFindNewestVer(Cache, P);
 549                 break;
 550         }
 551         return found;
 552 }
 553                                                                         /*}}}*/
 554 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 555 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 556                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 557         pkgCache::VerIterator Cand;
 558         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 559                 if (unlikely(Cache.GetPolicy() == 0))
 560                         return pkgCache::VerIterator(Cache);
 561                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 562         } else {
 563                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 564         }
 565         if (Cand.end() == true)
 566                 return helper.canNotFindCandidateVer(Cache, Pkg);
 567         return Cand;
 568 }
 569                                                                         /*}}}*/
 570 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 571 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 572                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 573         if (Pkg->CurrentVer == 0)
 574                 return helper.canNotFindInstalledVer(Cache, Pkg);
 575         return Pkg.CurrentVer();
 576 }
 577                                                                         /*}}}*/
 578
 579 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 580 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 581                         std::string const &str) {
 582         if (ShowError == true)
 583                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 584         return pkgCache::PkgIterator(Cache, 0);
 585 }
 586                                                                         /*}}}*/
 587 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 588 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 589         if (ShowError == true)
 590                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 591 }
 592                                                                         /*}}}*/
 593 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 594 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 595         if (ShowError == true)
 596                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 597 }
 598 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 599 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 600 void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 601         if (ShowError == true)
 602                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 603 }
 604 #endif                                                                  /*}}}*/
 605 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 606 void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str) {
 607 }
 608                                                                         /*}}}*/
 609 // canNotFindAllVer                                                     /*{{{*/
 610 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const vci, pkgCacheFile &Cache,
 611                 pkgCache::PkgIterator const &Pkg) {
 612         if (ShowError == true)
 613                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 614 }
 615                                                                         /*}}}*/
 616 // canNotFindInstCandVer                                                /*{{{*/
 617 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const vci, pkgCacheFile &Cache,
 618                 pkgCache::PkgIterator const &Pkg) {
 619         if (ShowError == true)
 620                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 621 }
 622                                                                         /*}}}*/
 623 // canNotFindInstCandVer                                                /*{{{*/
 624 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const vci, pkgCacheFile &Cache,
 625                 pkgCache::PkgIterator const &Pkg) {
 626         if (ShowError == true)
 627                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 628 }
 629                                                                         /*}}}*/
 630 // canNotFindNewestVer                                                  /*{{{*/
 631 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 632                 pkgCache::PkgIterator const &Pkg) {
 633         if (ShowError == true)
 634                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 635         return pkgCache::VerIterator(Cache, 0);
 636 }
 637                                                                         /*}}}*/
 638 // canNotFindCandidateVer                                               /*{{{*/
 639 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 640                 pkgCache::PkgIterator const &Pkg) {
 641         if (ShowError == true)
 642                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 643         return pkgCache::VerIterator(Cache, 0);
 644 }
 645                                                                         /*}}}*/
 646 // canNotFindInstalledVer                                               /*{{{*/
 647 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 648                 pkgCache::PkgIterator const &Pkg) {
 649         if (ShowError == true)
 650                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 651         return pkgCache::VerIterator(Cache, 0);
 652 }
 653                                                                         /*}}}*/
 654 // showTaskSelection                                                    /*{{{*/
 655 void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &pkg,
 656                                        std::string const &pattern) {
 657 }
 658                                                                         /*}}}*/
 659 // showRegExSelection                                                   /*{{{*/
 660 void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &pkg,
 661                                         std::string const &pattern) {
 662 }
 663                                                                         /*}}}*/
 664 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 665 // showFnmatchSelection                                                 /*{{{*/
 666 void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &pkg,
 667                                           std::string const &pattern) {
 668 }
 669                                                                         /*}}}*/
 670 #endif
 671 // showSelectedVersion                                                  /*{{{*/
 672 void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &Pkg,
 673                                          pkgCache::VerIterator const Ver,
 674                                          std::string const &ver,
 675                                          bool const verIsRel) {
 676 }
 677                                                                         /*}}}*/
 678 }