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 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 316                  FromFnmatch(pci, Cache, str, helper) == false)
 317 #endif
 318                  FromRegEx(pci, Cache, str, helper) == false)
 319         {
 320                 helper.canNotFindPackage(pci, Cache, str);
 321                 found = false;
 322         }
 323
 324         if (found == true)
 325                 _error->RevertToStack();
 326         else
 327                 _error->MergeWithStack();
 328         return found;
 329 }
 330                                                                         /*}}}*/
 331 // FromCommandLine - Return all packages specified on commandline       /*{{{*/
 332 bool PackageContainerInterface::FromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
 333         bool found = false;
 334         for (const char **I = cmdline; *I != 0; ++I)
 335                 found |= PackageContainerInterface::FromString(pci, Cache, *I, helper);
 336         return found;
 337 }
 338                                                                         /*}}}*/
 339 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 340 bool PackageContainerInterface::FromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 341                                                         pkgCacheFile &Cache, const char * cmdline,
 342                                                         std::list<Modifier> const &mods, CacheSetHelper &helper) {
 343         std::string str = cmdline;
 344         unsigned short fallback = modID;
 345         bool modifierPresent = false;
 346         for (std::list<Modifier>::const_iterator mod = mods.begin();
 347              mod != mods.end(); ++mod) {
 348                 size_t const alength = strlen(mod->Alias);
 349                 switch(mod->Pos) {
 350                 case Modifier::POSTFIX:
 351                         if (str.compare(str.length() - alength, alength,
 352                                         mod->Alias, 0, alength) != 0)
 353                                 continue;
 354                         str.erase(str.length() - alength);
 355                         modID = mod->ID;
 356                         break;
 357                 case Modifier::PREFIX:
 358                         continue;
 359                 case Modifier::NONE:
 360                         continue;
 361                 }
 362                 modifierPresent = true;
 363                 break;
 364         }
 365         if (modifierPresent == true) {
 366                 bool const errors = helper.showErrors(false);
 367                 pkgCache::PkgIterator Pkg = FromName(Cache, cmdline, helper);
 368                 helper.showErrors(errors);
 369                 if (Pkg.end() == false) {
 370                         pci->insert(Pkg);
 371                         modID = fallback;
 372                         return true;
 373                 }
 374         }
 375         return FromString(pci, Cache, str, helper);
 376 }
 377                                                                         /*}}}*/
 378 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 379 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 380                                                         VersionContainerInterface * const vci,
 381                                                         pkgCacheFile &Cache, const char * cmdline,
 382                                                         std::list<Modifier> const &mods,
 383                                                         CacheSetHelper &helper) {
 384         Version select = NEWEST;
 385         std::string str = cmdline;
 386         bool modifierPresent = false;
 387         unsigned short fallback = modID;
 388         for (std::list<Modifier>::const_iterator mod = mods.begin();
 389              mod != mods.end(); ++mod) {
 390                 if (modID == fallback && mod->ID == fallback)
 391                         select = mod->SelectVersion;
 392                 size_t const alength = strlen(mod->Alias);
 393                 switch(mod->Pos) {
 394                 case Modifier::POSTFIX:
 395                         if (str.compare(str.length() - alength, alength,
 396                                         mod->Alias, 0, alength) != 0)
 397                                 continue;
 398                         str.erase(str.length() - alength);
 399                         modID = mod->ID;
 400                         select = mod->SelectVersion;
 401                         break;
 402                 case Modifier::PREFIX:
 403                         continue;
 404                 case Modifier::NONE:
 405                         continue;
 406                 }
 407                 modifierPresent = true;
 408                 break;
 409         }
 410         if (modifierPresent == true) {
 411                 bool const errors = helper.showErrors(false);
 412                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 413                 helper.showErrors(errors);
 414                 if (found == true) {
 415                         modID = fallback;
 416                         return true;
 417                 }
 418         }
 419         return FromString(vci, Cache, str, select, helper);
 420 }
 421                                                                         /*}}}*/
 422 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 423 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 424                                                 pkgCacheFile &Cache, const char **cmdline,
 425                                                 Version const &fallback, CacheSetHelper &helper) {
 426         bool found = false;
 427         for (const char **I = cmdline; *I != 0; ++I)
 428                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 429         return found;
 430 }
 431                                                                         /*}}}*/
 432 // FromString - Returns all versions spedcified by a string             /*{{{*/
 433 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 434                                            pkgCacheFile &Cache, std::string pkg,
 435                                            Version const &fallback, CacheSetHelper &helper,
 436                                            bool const onlyFromName) {
 437         std::string ver;
 438         bool verIsRel = false;
 439         size_t const vertag = pkg.find_last_of("/=");
 440         if (vertag != std::string::npos) {
 441                 ver = pkg.substr(vertag+1);
 442                 verIsRel = (pkg[vertag] == '/');
 443                 pkg.erase(vertag);
 444         }
 445         PackageSet pkgset;
 446         if (onlyFromName == false)
 447                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 448         else {
 449                 pkgset.insert(PackageContainerInterface::FromName(Cache, pkg, helper));
 450         }
 451
 452         bool errors = true;
 453         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 454                 errors = helper.showErrors(false);
 455
 456         bool found = false;
 457         for (PackageSet::const_iterator P = pkgset.begin();
 458              P != pkgset.end(); ++P) {
 459                 if (vertag == std::string::npos) {
 460                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 461                         continue;
 462                 }
 463                 pkgCache::VerIterator V;
 464                 if (ver == "installed")
 465                         V = getInstalledVer(Cache, P, helper);
 466                 else if (ver == "candidate")
 467                         V = getCandidateVer(Cache, P, helper);
 468                 else if (ver == "newest") {
 469                         if (P->VersionList != 0)
 470                                 V = P.VersionList();
 471                         else
 472                                 V = helper.canNotFindNewestVer(Cache, P);
 473                 } else {
 474                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 475                                         pkgVersionMatch::Version));
 476                         V = Match.Find(P);
 477                         if (V.end() == true) {
 478                                 if (verIsRel == true)
 479                                         _error->Error(_("Release '%s' for '%s' was not found"),
 480                                                         ver.c_str(), P.FullName(true).c_str());
 481                                 else
 482                                         _error->Error(_("Version '%s' for '%s' was not found"),
 483                                                         ver.c_str(), P.FullName(true).c_str());
 484                                 continue;
 485                         }
 486                 }
 487                 if (V.end() == true)
 488                         continue;
 489                 helper.showSelectedVersion(P, V, ver, verIsRel);
 490                 vci->insert(V);
 491                 found = true;
 492         }
 493         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 494                 helper.showErrors(errors);
 495         return found;
 496 }
 497                                                                         /*}}}*/
 498 // FromPackage - versions from package based on fallback                /*{{{*/
 499 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 500                                             pkgCacheFile &Cache,
 501                                             pkgCache::PkgIterator const &P,
 502                                             Version const &fallback,
 503                                             CacheSetHelper &helper) {
 504         pkgCache::VerIterator V;
 505         bool showErrors;
 506         bool found = false;
 507         switch(fallback) {
 508         case ALL:
 509                 if (P->VersionList != 0)
 510                         for (V = P.VersionList(); V.end() != true; ++V)
 511                                 found |= vci->insert(V);
 512                 else
 513                         helper.canNotFindAllVer(vci, Cache, P);
 514                 break;
 515         case CANDANDINST:
 516                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 517                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 518                 break;
 519         case CANDIDATE:
 520                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 521                 break;
 522         case INSTALLED:
 523                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 524                 break;
 525         case CANDINST:
 526                 showErrors = helper.showErrors(false);
 527                 V = getCandidateVer(Cache, P, helper);
 528                 if (V.end() == true)
 529                         V = getInstalledVer(Cache, P, helper);
 530                 helper.showErrors(showErrors);
 531                 if (V.end() == false)
 532                         found |= vci->insert(V);
 533                 else
 534                         helper.canNotFindInstCandVer(vci, Cache, P);
 535                 break;
 536         case INSTCAND:
 537                 showErrors = helper.showErrors(false);
 538                 V = getInstalledVer(Cache, P, helper);
 539                 if (V.end() == true)
 540                         V = getCandidateVer(Cache, P, helper);
 541                 helper.showErrors(showErrors);
 542                 if (V.end() == false)
 543                         found |= vci->insert(V);
 544                 else
 545                         helper.canNotFindInstCandVer(vci, Cache, P);
 546                 break;
 547         case NEWEST:
 548                 if (P->VersionList != 0)
 549                         found |= vci->insert(P.VersionList());
 550                 else
 551                         helper.canNotFindNewestVer(Cache, P);
 552                 break;
 553         }
 554         return found;
 555 }
 556                                                                         /*}}}*/
 557 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 558 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 559                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 560         pkgCache::VerIterator Cand;
 561         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 562                 if (unlikely(Cache.GetPolicy() == 0))
 563                         return pkgCache::VerIterator(Cache);
 564                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 565         } else {
 566                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 567         }
 568         if (Cand.end() == true)
 569                 return helper.canNotFindCandidateVer(Cache, Pkg);
 570         return Cand;
 571 }
 572                                                                         /*}}}*/
 573 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 574 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 575                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 576         if (Pkg->CurrentVer == 0)
 577                 return helper.canNotFindInstalledVer(Cache, Pkg);
 578         return Pkg.CurrentVer();
 579 }
 580                                                                         /*}}}*/
 581
 582 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 583 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 584                         std::string const &str) {
 585         if (ShowError == true)
 586                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 587         return pkgCache::PkgIterator(Cache, 0);
 588 }
 589                                                                         /*}}}*/
 590 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 591 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 592         if (ShowError == true)
 593                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 594 }
 595                                                                         /*}}}*/
 596 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 597 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 598         if (ShowError == true)
 599                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 600 }
 601 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 602 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 603 void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 604         if (ShowError == true)
 605                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 606 }
 607 #endif                                                                  /*}}}*/
 608 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 609 void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string const &/*str*/) {
 610 }
 611                                                                         /*}}}*/
 612 // canNotFindAllVer                                                     /*{{{*/
 613 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 614                 pkgCache::PkgIterator const &Pkg) {
 615         if (ShowError == true)
 616                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 617 }
 618                                                                         /*}}}*/
 619 // canNotFindInstCandVer                                                /*{{{*/
 620 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 621                 pkgCache::PkgIterator const &Pkg) {
 622         if (ShowError == true)
 623                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 624 }
 625                                                                         /*}}}*/
 626 // canNotFindInstCandVer                                                /*{{{*/
 627 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 628                 pkgCache::PkgIterator const &Pkg) {
 629         if (ShowError == true)
 630                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 631 }
 632                                                                         /*}}}*/
 633 // canNotFindNewestVer                                                  /*{{{*/
 634 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 635                 pkgCache::PkgIterator const &Pkg) {
 636         if (ShowError == true)
 637                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 638         return pkgCache::VerIterator(Cache, 0);
 639 }
 640                                                                         /*}}}*/
 641 // canNotFindCandidateVer                                               /*{{{*/
 642 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 643                 pkgCache::PkgIterator const &Pkg) {
 644         if (ShowError == true)
 645                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 646         return pkgCache::VerIterator(Cache, 0);
 647 }
 648                                                                         /*}}}*/
 649 // canNotFindInstalledVer                                               /*{{{*/
 650 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 651                 pkgCache::PkgIterator const &Pkg) {
 652         if (ShowError == true)
 653                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 654         return pkgCache::VerIterator(Cache, 0);
 655 }
 656                                                                         /*}}}*/
 657 // showTaskSelection                                                    /*{{{*/
 658 void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &/*pkg*/,
 659                                        std::string const &/*pattern*/) {
 660 }
 661                                                                         /*}}}*/
 662 // showRegExSelection                                                   /*{{{*/
 663 void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &/*pkg*/,
 664                                         std::string const &/*pattern*/) {
 665 }
 666                                                                         /*}}}*/
 667 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 668 // showFnmatchSelection                                                 /*{{{*/
 669 void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &pkg,
 670                                           std::string const &pattern) {
 671 }
 672                                                                         /*}}}*/
 673 #endif
 674 // showSelectedVersion                                                  /*{{{*/
 675 void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/,
 676                                          pkgCache::VerIterator const /*Ver*/,
 677                                          std::string const &/*ver*/,
 678                                          bool const /*verIsRel*/) {
 679 }
 680                                                                         /*}}}*/
 681 }