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/versionmatch.h>
  20 #include <apt-pkg/pkgrecords.h>
  21 #include <apt-pkg/policy.h>
  22 #include <apt-pkg/cacheiterators.h>
  23 #include <apt-pkg/configuration.h>
  24 #include <apt-pkg/depcache.h>
  25 #include <apt-pkg/macros.h>
  26 #include <apt-pkg/pkgcache.h>
  27
  28 #include <stddef.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <regex.h>
  32 #include <list>
  33 #include <string>
  34 #include <vector>
  35
  36 #include <apti18n.h>
  37                                                                         /*}}}*/
  38 namespace APT {
  39 // FromTask - Return all packages in the cache from a specific task     /*{{{*/
  40 bool PackageContainerInterface::FromTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
  41         size_t const archfound = pattern.find_last_of(':');
  42         std::string arch = "native";
  43         if (archfound != std::string::npos) {
  44                 arch = pattern.substr(archfound+1);
  45                 pattern.erase(archfound);
  46         }
  47
  48         if (pattern[pattern.length() -1] != '^')
  49                 return false;
  50         pattern.erase(pattern.length()-1);
  51
  52         if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
  53                 return false;
  54
  55         bool const wasEmpty = pci->empty();
  56         if (wasEmpty == true)
  57                 pci->setConstructor(TASK);
  58
  59         // get the records
  60         pkgRecords Recs(Cache);
  61
  62         // build regexp for the task
  63         regex_t Pattern;
  64         char S[300];
  65         snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
  66         if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
  67                 _error->Error("Failed to compile task regexp");
  68                 return false;
  69         }
  70
  71         bool found = false;
  72         for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
  73                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
  74                 if (Pkg.end() == true)
  75                         continue;
  76                 pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
  77                 if(ver.end() == true)
  78                         continue;
  79
  80                 pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
  81                 const char *start, *end;
  82                 parser.GetRec(start,end);
  83                 unsigned int const length = end - start;
  84                 if (unlikely(length == 0))
  85                    continue;
  86                 char buf[length];
  87                 strncpy(buf, start, length);
  88                 buf[length-1] = '\0';
  89                 if (regexec(&Pattern, buf, 0, 0, 0) != 0)
  90                         continue;
  91
  92                 pci->insert(Pkg);
  93                 helper.showTaskSelection(Pkg, pattern);
  94                 found = true;
  95         }
  96         regfree(&Pattern);
  97
  98         if (found == false) {
  99                 helper.canNotFindTask(pci, Cache, pattern);
 100                 pci->setConstructor(UNKNOWN);
 101                 return false;
 102         }
 103
 104         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 105                 pci->setConstructor(UNKNOWN);
 106
 107         return true;
 108 }
 109                                                                         /*}}}*/
 110 // FromRegEx - Return all packages in the cache matching a pattern      /*{{{*/
 111 bool PackageContainerInterface::FromRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
 112         static const char * const isregex = ".?+*|[^$";
 113         if (pattern.find_first_of(isregex) == std::string::npos)
 114                 return false;
 115
 116         bool const wasEmpty = pci->empty();
 117         if (wasEmpty == true)
 118                 pci->setConstructor(REGEX);
 119
 120         size_t archfound = pattern.find_last_of(':');
 121         std::string arch = "native";
 122         if (archfound != std::string::npos) {
 123                 arch = pattern.substr(archfound+1);
 124                 if (arch.find_first_of(isregex) == std::string::npos)
 125                         pattern.erase(archfound);
 126                 else
 127                         arch = "native";
 128         }
 129
 130         if (unlikely(Cache.GetPkgCache() == 0))
 131                 return false;
 132
 133         APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
 134
 135         bool found = false;
 136         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 137                 if (regexfilter(Grp) == false)
 138                         continue;
 139                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 140                 if (Pkg.end() == true) {
 141                         if (archfound == std::string::npos) {
 142                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 143                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 144                                      a != archs.end() && Pkg.end() != true; ++a)
 145                                         Pkg = Grp.FindPkg(*a);
 146                         }
 147                         if (Pkg.end() == true)
 148                                 continue;
 149                 }
 150
 151                 pci->insert(Pkg);
 152                 helper.showRegExSelection(Pkg, pattern);
 153                 found = true;
 154         }
 155
 156         if (found == false) {
 157                 helper.canNotFindRegEx(pci, Cache, pattern);
 158                 pci->setConstructor(UNKNOWN);
 159                 return false;
 160         }
 161
 162         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 163                 pci->setConstructor(UNKNOWN);
 164
 165         return true;
 166 }
 167                                                                         /*}}}*/
 168 // FromFnmatch - Returns the package defined  by this fnmatch           /*{{{*/
 169 bool
 170 PackageContainerInterface::FromFnmatch(PackageContainerInterface * const pci,
 171                                        pkgCacheFile &Cache,
 172                                        std::string pattern,
 173                                        CacheSetHelper &helper)
 174 {
 175         static const char * const isfnmatch = ".?*[]!";
 176         if (pattern.find_first_of(isfnmatch) == std::string::npos)
 177                 return false;
 178
 179         bool const wasEmpty = pci->empty();
 180         if (wasEmpty == true)
 181                 pci->setConstructor(FNMATCH);
 182
 183         size_t archfound = pattern.find_last_of(':');
 184         std::string arch = "native";
 185         if (archfound != std::string::npos) {
 186                 arch = pattern.substr(archfound+1);
 187                 if (arch.find_first_of(isfnmatch) == std::string::npos)
 188                         pattern.erase(archfound);
 189                 else
 190                         arch = "native";
 191         }
 192
 193         if (unlikely(Cache.GetPkgCache() == 0))
 194                 return false;
 195
 196         APT::CacheFilter::PackageNameMatchesFnmatch filter(pattern);
 197
 198         bool found = false;
 199         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 200                 if (filter(Grp) == false)
 201                         continue;
 202                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 203                 if (Pkg.end() == true) {
 204                         if (archfound == std::string::npos) {
 205                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 206                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 207                                      a != archs.end() && Pkg.end() != true; ++a)
 208                                         Pkg = Grp.FindPkg(*a);
 209                         }
 210                         if (Pkg.end() == true)
 211                                 continue;
 212                 }
 213
 214                 pci->insert(Pkg);
 215 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 216                 helper.showFnmatchSelection(Pkg, pattern);
 217 #else
 218                 helper.showRegExSelection(Pkg, pattern);
 219 #endif
 220                 found = true;
 221         }
 222
 223         if (found == false) {
 224 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 225                 helper.canNotFindFnmatch(pci, Cache, pattern);
 226 #else
 227                 helper.canNotFindRegEx(pci, Cache, pattern);
 228 #endif
 229                 pci->setConstructor(UNKNOWN);
 230                 return false;
 231         }
 232
 233         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 234                 pci->setConstructor(UNKNOWN);
 235
 236         return true;
 237 }
 238                                                                         /*}}}*/
 239 // FromName - Returns the package defined  by this string               /*{{{*/
 240 pkgCache::PkgIterator PackageContainerInterface::FromName(pkgCacheFile &Cache,
 241                         std::string const &str, CacheSetHelper &helper) {
 242         std::string pkg = str;
 243         size_t archfound = pkg.find_last_of(':');
 244         std::string arch;
 245         if (archfound != std::string::npos) {
 246                 arch = pkg.substr(archfound+1);
 247                 pkg.erase(archfound);
 248         }
 249
 250         if (Cache.GetPkgCache() == 0)
 251                 return pkgCache::PkgIterator(Cache, 0);
 252
 253         pkgCache::PkgIterator Pkg(Cache, 0);
 254         if (arch.empty() == true) {
 255                 pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 256                 if (Grp.end() == false)
 257                         Pkg = Grp.FindPreferredPkg();
 258         } else
 259                 Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
 260
 261         if (Pkg.end() == true)
 262                 return helper.canNotFindPkgName(Cache, str);
 263         return Pkg;
 264 }
 265                                                                         /*}}}*/
 266 // FromGroup - Returns the package defined  by this string              /*{{{*/
 267 bool PackageContainerInterface::FromGroup(PackageContainerInterface * const pci, pkgCacheFile &Cache,
 268                         std::string pkg, CacheSetHelper &helper) {
 269         if (unlikely(Cache.GetPkgCache() == 0))
 270                 return false;
 271
 272         size_t const archfound = pkg.find_last_of(':');
 273         std::string arch;
 274         if (archfound != std::string::npos) {
 275                 arch = pkg.substr(archfound+1);
 276                 pkg.erase(archfound);
 277                 if (arch == "all" || arch == "native")
 278                         arch = _config->Find("APT::Architecture");
 279         }
 280
 281         pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 282         if (Grp.end() == false) {
 283                 if (arch.empty() == true) {
 284                         pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
 285                         if (Pkg.end() == false)
 286                         {
 287                            pci->insert(Pkg);
 288                            return true;
 289                         }
 290                 } else {
 291                         bool found = false;
 292                         // for 'linux-any' return the first package matching, for 'linux-*' return all matches
 293                         bool const isGlobal = arch.find('*') != std::string::npos;
 294                         APT::CacheFilter::PackageArchitectureMatchesSpecification pams(arch);
 295                         for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) {
 296                                 if (pams(Pkg) == false)
 297                                         continue;
 298                                 pci->insert(Pkg);
 299                                 found = true;
 300                                 if (isGlobal == false)
 301                                         break;
 302                         }
 303                         if (found == true)
 304                                 return true;
 305                 }
 306         }
 307
 308         pkgCache::PkgIterator Pkg = helper.canNotFindPkgName(Cache, pkg);
 309         if (Pkg.end() == true)
 310            return false;
 311
 312         pci->insert(Pkg);
 313         return true;
 314 }
 315                                                                         /*}}}*/
 316 // FromString - Return all packages matching a specific string          /*{{{*/
 317 bool PackageContainerInterface::FromString(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
 318         bool found = true;
 319         _error->PushToStack();
 320
 321         if (FromGroup(pci, Cache, str, helper) == false &&
 322                  FromTask(pci, Cache, str, helper) == false &&
 323 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 324                  FromFnmatch(pci, Cache, str, helper) == false)
 325 #endif
 326                  FromRegEx(pci, Cache, str, helper) == false)
 327         {
 328                 helper.canNotFindPackage(pci, Cache, str);
 329                 found = false;
 330         }
 331
 332         if (found == true)
 333                 _error->RevertToStack();
 334         else
 335                 _error->MergeWithStack();
 336         return found;
 337 }
 338                                                                         /*}}}*/
 339 // FromCommandLine - Return all packages specified on commandline       /*{{{*/
 340 bool PackageContainerInterface::FromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
 341         bool found = false;
 342         for (const char **I = cmdline; *I != 0; ++I)
 343                 found |= PackageContainerInterface::FromString(pci, Cache, *I, helper);
 344         return found;
 345 }
 346                                                                         /*}}}*/
 347 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 348 bool PackageContainerInterface::FromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 349                                                         pkgCacheFile &Cache, const char * cmdline,
 350                                                         std::list<Modifier> const &mods, CacheSetHelper &helper) {
 351         std::string str = cmdline;
 352         unsigned short fallback = modID;
 353         bool modifierPresent = false;
 354         for (std::list<Modifier>::const_iterator mod = mods.begin();
 355              mod != mods.end(); ++mod) {
 356                 size_t const alength = strlen(mod->Alias);
 357                 switch(mod->Pos) {
 358                 case Modifier::POSTFIX:
 359                         if (str.compare(str.length() - alength, alength,
 360                                         mod->Alias, 0, alength) != 0)
 361                                 continue;
 362                         str.erase(str.length() - alength);
 363                         modID = mod->ID;
 364                         break;
 365                 case Modifier::PREFIX:
 366                         continue;
 367                 case Modifier::NONE:
 368                         continue;
 369                 }
 370                 modifierPresent = true;
 371                 break;
 372         }
 373         if (modifierPresent == true) {
 374                 bool const errors = helper.showErrors(false);
 375                 pkgCache::PkgIterator Pkg = FromName(Cache, cmdline, helper);
 376                 helper.showErrors(errors);
 377                 if (Pkg.end() == false) {
 378                         pci->insert(Pkg);
 379                         modID = fallback;
 380                         return true;
 381                 }
 382         }
 383         return FromString(pci, Cache, str, helper);
 384 }
 385                                                                         /*}}}*/
 386 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 387 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 388                                                         VersionContainerInterface * const vci,
 389                                                         pkgCacheFile &Cache, const char * cmdline,
 390                                                         std::list<Modifier> const &mods,
 391                                                         CacheSetHelper &helper) {
 392         Version select = NEWEST;
 393         std::string str = cmdline;
 394         if (unlikely(str.empty() == true))
 395                 return false;
 396         bool modifierPresent = false;
 397         unsigned short fallback = modID;
 398         for (std::list<Modifier>::const_iterator mod = mods.begin();
 399              mod != mods.end(); ++mod) {
 400                 if (modID == fallback && mod->ID == fallback)
 401                         select = mod->SelectVersion;
 402                 size_t const alength = strlen(mod->Alias);
 403                 switch(mod->Pos) {
 404                 case Modifier::POSTFIX:
 405                         if (str.length() <= alength ||
 406                               str.compare(str.length() - alength, alength, mod->Alias, 0, alength) != 0)
 407                                 continue;
 408                         str.erase(str.length() - alength);
 409                         modID = mod->ID;
 410                         select = mod->SelectVersion;
 411                         break;
 412                 case Modifier::PREFIX:
 413                         continue;
 414                 case Modifier::NONE:
 415                         continue;
 416                 }
 417                 modifierPresent = true;
 418                 break;
 419         }
 420         if (modifierPresent == true) {
 421                 bool const errors = helper.showErrors(false);
 422                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 423                 helper.showErrors(errors);
 424                 if (found == true) {
 425                         modID = fallback;
 426                         return true;
 427                 }
 428         }
 429         return FromString(vci, Cache, str, select, helper);
 430 }
 431                                                                         /*}}}*/
 432 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 433 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 434                                                 pkgCacheFile &Cache, const char **cmdline,
 435                                                 Version const &fallback, CacheSetHelper &helper) {
 436         bool found = false;
 437         for (const char **I = cmdline; *I != 0; ++I)
 438                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 439         return found;
 440 }
 441                                                                         /*}}}*/
 442 // FromString - Returns all versions spedcified by a string             /*{{{*/
 443 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 444                                            pkgCacheFile &Cache, std::string pkg,
 445                                            Version const &fallback, CacheSetHelper &helper,
 446                                            bool const onlyFromName) {
 447         std::string ver;
 448         bool verIsRel = false;
 449         size_t const vertag = pkg.find_last_of("/=");
 450         if (vertag != std::string::npos) {
 451                 ver = pkg.substr(vertag+1);
 452                 verIsRel = (pkg[vertag] == '/');
 453                 pkg.erase(vertag);
 454         }
 455         PackageSet pkgset;
 456         if (onlyFromName == false)
 457                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 458         else {
 459                 pkgset.insert(PackageContainerInterface::FromName(Cache, pkg, helper));
 460         }
 461
 462         bool errors = true;
 463         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 464                 errors = helper.showErrors(false);
 465
 466         bool found = false;
 467         for (PackageSet::const_iterator P = pkgset.begin();
 468              P != pkgset.end(); ++P) {
 469                 if (vertag == std::string::npos) {
 470                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 471                         continue;
 472                 }
 473                 pkgCache::VerIterator V;
 474                 if (ver == "installed")
 475                         V = getInstalledVer(Cache, P, helper);
 476                 else if (ver == "candidate")
 477                         V = getCandidateVer(Cache, P, helper);
 478                 else if (ver == "newest") {
 479                         if (P->VersionList != 0)
 480                                 V = P.VersionList();
 481                         else
 482                                 V = helper.canNotFindNewestVer(Cache, P);
 483                 } else {
 484                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 485                                         pkgVersionMatch::Version));
 486                         V = Match.Find(P);
 487                         if (V.end() == true) {
 488                                 if (verIsRel == true)
 489                                         _error->Error(_("Release '%s' for '%s' was not found"),
 490                                                         ver.c_str(), P.FullName(true).c_str());
 491                                 else
 492                                         _error->Error(_("Version '%s' for '%s' was not found"),
 493                                                         ver.c_str(), P.FullName(true).c_str());
 494                                 continue;
 495                         }
 496                 }
 497                 if (V.end() == true)
 498                         continue;
 499                 helper.showSelectedVersion(P, V, ver, verIsRel);
 500                 vci->insert(V);
 501                 found = true;
 502         }
 503         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 504                 helper.showErrors(errors);
 505         return found;
 506 }
 507                                                                         /*}}}*/
 508 // FromPackage - versions from package based on fallback                /*{{{*/
 509 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 510                                             pkgCacheFile &Cache,
 511                                             pkgCache::PkgIterator const &P,
 512                                             Version const &fallback,
 513                                             CacheSetHelper &helper) {
 514         pkgCache::VerIterator V;
 515         bool showErrors;
 516         bool found = false;
 517         switch(fallback) {
 518         case ALL:
 519                 if (P->VersionList != 0)
 520                         for (V = P.VersionList(); V.end() != true; ++V)
 521                                 found |= vci->insert(V);
 522                 else
 523                         helper.canNotFindAllVer(vci, Cache, P);
 524                 break;
 525         case CANDANDINST:
 526                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 527                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 528                 break;
 529         case CANDIDATE:
 530                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 531                 break;
 532         case INSTALLED:
 533                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 534                 break;
 535         case CANDINST:
 536                 showErrors = helper.showErrors(false);
 537                 V = getCandidateVer(Cache, P, helper);
 538                 if (V.end() == true)
 539                         V = getInstalledVer(Cache, P, helper);
 540                 helper.showErrors(showErrors);
 541                 if (V.end() == false)
 542                         found |= vci->insert(V);
 543                 else
 544                         helper.canNotFindInstCandVer(vci, Cache, P);
 545                 break;
 546         case INSTCAND:
 547                 showErrors = helper.showErrors(false);
 548                 V = getInstalledVer(Cache, P, helper);
 549                 if (V.end() == true)
 550                         V = getCandidateVer(Cache, P, helper);
 551                 helper.showErrors(showErrors);
 552                 if (V.end() == false)
 553                         found |= vci->insert(V);
 554                 else
 555                         helper.canNotFindInstCandVer(vci, Cache, P);
 556                 break;
 557         case NEWEST:
 558                 if (P->VersionList != 0)
 559                         found |= vci->insert(P.VersionList());
 560                 else
 561                         helper.canNotFindNewestVer(Cache, P);
 562                 break;
 563         }
 564         return found;
 565 }
 566                                                                         /*}}}*/
 567 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 568 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 569                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 570         pkgCache::VerIterator Cand;
 571         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 572                 if (unlikely(Cache.GetPolicy() == 0))
 573                         return pkgCache::VerIterator(Cache);
 574                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 575         } else {
 576                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 577         }
 578         if (Cand.end() == true)
 579                 return helper.canNotFindCandidateVer(Cache, Pkg);
 580         return Cand;
 581 }
 582                                                                         /*}}}*/
 583 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 584 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 585                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 586         if (Pkg->CurrentVer == 0)
 587                 return helper.canNotFindInstalledVer(Cache, Pkg);
 588         return Pkg.CurrentVer();
 589 }
 590                                                                         /*}}}*/
 591
 592 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 593 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 594                         std::string const &str) {
 595         if (ShowError == true)
 596                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 597         return pkgCache::PkgIterator(Cache, 0);
 598 }
 599                                                                         /*}}}*/
 600 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 601 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 602         if (ShowError == true)
 603                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 604 }
 605                                                                         /*}}}*/
 606 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 607 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 608         if (ShowError == true)
 609                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 610 }
 611 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 612 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 613 void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 614         if (ShowError == true)
 615                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 616 }
 617 #endif                                                                  /*}}}*/
 618 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 619 APT_CONST void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string const &/*str*/) {
 620 }
 621                                                                         /*}}}*/
 622 // canNotFindAllVer                                                     /*{{{*/
 623 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 624                 pkgCache::PkgIterator const &Pkg) {
 625         if (ShowError == true)
 626                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 627 }
 628                                                                         /*}}}*/
 629 // canNotFindInstCandVer                                                /*{{{*/
 630 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 631                 pkgCache::PkgIterator const &Pkg) {
 632         if (ShowError == true)
 633                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 634 }
 635                                                                         /*}}}*/
 636 // canNotFindInstCandVer                                                /*{{{*/
 637 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 638                 pkgCache::PkgIterator const &Pkg) {
 639         if (ShowError == true)
 640                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 641 }
 642                                                                         /*}}}*/
 643 // canNotFindNewestVer                                                  /*{{{*/
 644 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 645                 pkgCache::PkgIterator const &Pkg) {
 646         if (ShowError == true)
 647                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 648         return pkgCache::VerIterator(Cache, 0);
 649 }
 650                                                                         /*}}}*/
 651 // canNotFindCandidateVer                                               /*{{{*/
 652 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 653                 pkgCache::PkgIterator const &Pkg) {
 654         if (ShowError == true)
 655                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 656         return pkgCache::VerIterator(Cache, 0);
 657 }
 658                                                                         /*}}}*/
 659 // canNotFindInstalledVer                                               /*{{{*/
 660 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 661                 pkgCache::PkgIterator const &Pkg) {
 662         if (ShowError == true)
 663                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 664         return pkgCache::VerIterator(Cache, 0);
 665 }
 666                                                                         /*}}}*/
 667 // showTaskSelection                                                    /*{{{*/
 668 APT_CONST void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &/*pkg*/,
 669                                        std::string const &/*pattern*/) {
 670 }
 671                                                                         /*}}}*/
 672 // showRegExSelection                                                   /*{{{*/
 673 APT_CONST void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &/*pkg*/,
 674                                         std::string const &/*pattern*/) {
 675 }
 676                                                                         /*}}}*/
 677 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 678 // showFnmatchSelection                                                 /*{{{*/
 679 APT_CONST void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &pkg,
 680                                           std::string const &pattern) {
 681 }
 682                                                                         /*}}}*/
 683 #endif
 684 // showSelectedVersion                                                  /*{{{*/
 685 APT_CONST void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/,
 686                                          pkgCache::VerIterator const /*Ver*/,
 687                                          std::string const &/*ver*/,
 688                                          bool const /*verIsRel*/) {
 689 }
 690                                                                         /*}}}*/
 691 }