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                  // FIXME: hm, hm, regexp/fnmatch incompatible?
 325                  FromFnmatch(pci, Cache, str, helper) == false &&
 326 #endif
 327                  FromRegEx(pci, Cache, str, helper) == false)
 328         {
 329                 helper.canNotFindPackage(pci, Cache, str);
 330                 found = false;
 331         }
 332
 333         if (found == true)
 334                 _error->RevertToStack();
 335         else
 336                 _error->MergeWithStack();
 337         return found;
 338 }
 339                                                                         /*}}}*/
 340 // FromCommandLine - Return all packages specified on commandline       /*{{{*/
 341 bool PackageContainerInterface::FromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
 342         bool found = false;
 343         for (const char **I = cmdline; *I != 0; ++I)
 344                 found |= PackageContainerInterface::FromString(pci, Cache, *I, helper);
 345         return found;
 346 }
 347                                                                         /*}}}*/
 348 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 349 bool PackageContainerInterface::FromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 350                                                         pkgCacheFile &Cache, const char * cmdline,
 351                                                         std::list<Modifier> const &mods, CacheSetHelper &helper) {
 352         std::string str = cmdline;
 353         unsigned short fallback = modID;
 354         bool modifierPresent = false;
 355         for (std::list<Modifier>::const_iterator mod = mods.begin();
 356              mod != mods.end(); ++mod) {
 357                 size_t const alength = strlen(mod->Alias);
 358                 switch(mod->Pos) {
 359                 case Modifier::POSTFIX:
 360                         if (str.compare(str.length() - alength, alength,
 361                                         mod->Alias, 0, alength) != 0)
 362                                 continue;
 363                         str.erase(str.length() - alength);
 364                         modID = mod->ID;
 365                         break;
 366                 case Modifier::PREFIX:
 367                         continue;
 368                 case Modifier::NONE:
 369                         continue;
 370                 }
 371                 modifierPresent = true;
 372                 break;
 373         }
 374         if (modifierPresent == true) {
 375                 bool const errors = helper.showErrors(false);
 376                 pkgCache::PkgIterator Pkg = FromName(Cache, cmdline, helper);
 377                 helper.showErrors(errors);
 378                 if (Pkg.end() == false) {
 379                         pci->insert(Pkg);
 380                         modID = fallback;
 381                         return true;
 382                 }
 383         }
 384         return FromString(pci, Cache, str, helper);
 385 }
 386                                                                         /*}}}*/
 387 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 388 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 389                                                         VersionContainerInterface * const vci,
 390                                                         pkgCacheFile &Cache, const char * cmdline,
 391                                                         std::list<Modifier> const &mods,
 392                                                         CacheSetHelper &helper) {
 393         Version select = NEWEST;
 394         std::string str = cmdline;
 395         if (unlikely(str.empty() == true))
 396                 return false;
 397         bool modifierPresent = false;
 398         unsigned short fallback = modID;
 399         for (std::list<Modifier>::const_iterator mod = mods.begin();
 400              mod != mods.end(); ++mod) {
 401                 if (modID == fallback && mod->ID == fallback)
 402                         select = mod->SelectVersion;
 403                 size_t const alength = strlen(mod->Alias);
 404                 switch(mod->Pos) {
 405                 case Modifier::POSTFIX:
 406                         if (str.length() <= alength ||
 407                               str.compare(str.length() - alength, alength, mod->Alias, 0, alength) != 0)
 408                                 continue;
 409                         str.erase(str.length() - alength);
 410                         modID = mod->ID;
 411                         select = mod->SelectVersion;
 412                         break;
 413                 case Modifier::PREFIX:
 414                         continue;
 415                 case Modifier::NONE:
 416                         continue;
 417                 }
 418                 modifierPresent = true;
 419                 break;
 420         }
 421         if (modifierPresent == true) {
 422                 bool const errors = helper.showErrors(false);
 423                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 424                 helper.showErrors(errors);
 425                 if (found == true) {
 426                         modID = fallback;
 427                         return true;
 428                 }
 429         }
 430         return FromString(vci, Cache, str, select, helper);
 431 }
 432                                                                         /*}}}*/
 433 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 434 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 435                                                 pkgCacheFile &Cache, const char **cmdline,
 436                                                 Version const &fallback, CacheSetHelper &helper) {
 437         bool found = false;
 438         for (const char **I = cmdline; *I != 0; ++I)
 439                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 440         return found;
 441 }
 442                                                                         /*}}}*/
 443 // FromString - Returns all versions spedcified by a string             /*{{{*/
 444 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 445                                            pkgCacheFile &Cache, std::string pkg,
 446                                            Version const &fallback, CacheSetHelper &helper,
 447                                            bool const onlyFromName) {
 448         std::string ver;
 449         bool verIsRel = false;
 450         size_t const vertag = pkg.find_last_of("/=");
 451         if (vertag != std::string::npos) {
 452                 ver = pkg.substr(vertag+1);
 453                 verIsRel = (pkg[vertag] == '/');
 454                 pkg.erase(vertag);
 455         }
 456         PackageSet pkgset;
 457         if (onlyFromName == false)
 458                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 459         else {
 460                 pkgset.insert(PackageContainerInterface::FromName(Cache, pkg, helper));
 461         }
 462
 463         bool errors = true;
 464         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 465                 errors = helper.showErrors(false);
 466
 467         bool found = false;
 468         for (PackageSet::const_iterator P = pkgset.begin();
 469              P != pkgset.end(); ++P) {
 470                 if (vertag == std::string::npos) {
 471                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 472                         continue;
 473                 }
 474                 pkgCache::VerIterator V;
 475                 if (ver == "installed")
 476                         V = getInstalledVer(Cache, P, helper);
 477                 else if (ver == "candidate")
 478                         V = getCandidateVer(Cache, P, helper);
 479                 else if (ver == "newest") {
 480                         if (P->VersionList != 0)
 481                                 V = P.VersionList();
 482                         else
 483                                 V = helper.canNotFindNewestVer(Cache, P);
 484                 } else {
 485                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 486                                         pkgVersionMatch::Version));
 487                         V = Match.Find(P);
 488                         if (V.end() == true) {
 489                                 if (verIsRel == true)
 490                                         _error->Error(_("Release '%s' for '%s' was not found"),
 491                                                         ver.c_str(), P.FullName(true).c_str());
 492                                 else
 493                                         _error->Error(_("Version '%s' for '%s' was not found"),
 494                                                         ver.c_str(), P.FullName(true).c_str());
 495                                 continue;
 496                         }
 497                 }
 498                 if (V.end() == true)
 499                         continue;
 500                 helper.showSelectedVersion(P, V, ver, verIsRel);
 501                 vci->insert(V);
 502                 found = true;
 503         }
 504         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 505                 helper.showErrors(errors);
 506         return found;
 507 }
 508                                                                         /*}}}*/
 509 // FromPackage - versions from package based on fallback                /*{{{*/
 510 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 511                                             pkgCacheFile &Cache,
 512                                             pkgCache::PkgIterator const &P,
 513                                             Version const &fallback,
 514                                             CacheSetHelper &helper) {
 515         pkgCache::VerIterator V;
 516         bool showErrors;
 517         bool found = false;
 518         switch(fallback) {
 519         case ALL:
 520                 if (P->VersionList != 0)
 521                         for (V = P.VersionList(); V.end() != true; ++V)
 522                                 found |= vci->insert(V);
 523                 else
 524                         helper.canNotFindAllVer(vci, Cache, P);
 525                 break;
 526         case CANDANDINST:
 527                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 528                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 529                 break;
 530         case CANDIDATE:
 531                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 532                 break;
 533         case INSTALLED:
 534                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 535                 break;
 536         case CANDINST:
 537                 showErrors = helper.showErrors(false);
 538                 V = getCandidateVer(Cache, P, helper);
 539                 if (V.end() == true)
 540                         V = getInstalledVer(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 INSTCAND:
 548                 showErrors = helper.showErrors(false);
 549                 V = getInstalledVer(Cache, P, helper);
 550                 if (V.end() == true)
 551                         V = getCandidateVer(Cache, P, helper);
 552                 helper.showErrors(showErrors);
 553                 if (V.end() == false)
 554                         found |= vci->insert(V);
 555                 else
 556                         helper.canNotFindInstCandVer(vci, Cache, P);
 557                 break;
 558         case NEWEST:
 559                 if (P->VersionList != 0)
 560                         found |= vci->insert(P.VersionList());
 561                 else
 562                         helper.canNotFindNewestVer(Cache, P);
 563                 break;
 564         }
 565         return found;
 566 }
 567                                                                         /*}}}*/
 568 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 569 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 570                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 571         pkgCache::VerIterator Cand;
 572         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 573                 if (unlikely(Cache.GetPolicy() == 0))
 574                         return pkgCache::VerIterator(Cache);
 575                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 576         } else {
 577                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 578         }
 579         if (Cand.end() == true)
 580                 return helper.canNotFindCandidateVer(Cache, Pkg);
 581         return Cand;
 582 }
 583                                                                         /*}}}*/
 584 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 585 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 586                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 587         if (Pkg->CurrentVer == 0)
 588                 return helper.canNotFindInstalledVer(Cache, Pkg);
 589         return Pkg.CurrentVer();
 590 }
 591                                                                         /*}}}*/
 592
 593 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 594 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 595                         std::string const &str) {
 596         if (ShowError == true)
 597                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 598         return pkgCache::PkgIterator(Cache, 0);
 599 }
 600                                                                         /*}}}*/
 601 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 602 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 603         if (ShowError == true)
 604                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 605 }
 606                                                                         /*}}}*/
 607 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 608 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 609         if (ShowError == true)
 610                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 611 }
 612 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 613 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 614    void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 615         if (ShowError == true)
 616                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 617 }
 618 #endif                                                                  /*}}}*/
 619 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 620 APT_CONST void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string const &/*str*/) {
 621 }
 622                                                                         /*}}}*/
 623 // canNotFindAllVer                                                     /*{{{*/
 624 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 625                 pkgCache::PkgIterator const &Pkg) {
 626         if (ShowError == true)
 627                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 628 }
 629                                                                         /*}}}*/
 630 // canNotFindInstCandVer                                                /*{{{*/
 631 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 632                 pkgCache::PkgIterator const &Pkg) {
 633         if (ShowError == true)
 634                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 635 }
 636                                                                         /*}}}*/
 637 // canNotFindInstCandVer                                                /*{{{*/
 638 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 639                 pkgCache::PkgIterator const &Pkg) {
 640         if (ShowError == true)
 641                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 642 }
 643                                                                         /*}}}*/
 644 // canNotFindNewestVer                                                  /*{{{*/
 645 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 646                 pkgCache::PkgIterator const &Pkg) {
 647         if (ShowError == true)
 648                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 649         return pkgCache::VerIterator(Cache, 0);
 650 }
 651                                                                         /*}}}*/
 652 // canNotFindCandidateVer                                               /*{{{*/
 653 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 654                 pkgCache::PkgIterator const &Pkg) {
 655         if (ShowError == true)
 656                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 657         return pkgCache::VerIterator(Cache, 0);
 658 }
 659                                                                         /*}}}*/
 660 // canNotFindInstalledVer                                               /*{{{*/
 661 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 662                 pkgCache::PkgIterator const &Pkg) {
 663         if (ShowError == true)
 664                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 665         return pkgCache::VerIterator(Cache, 0);
 666 }
 667                                                                         /*}}}*/
 668 // showTaskSelection                                                    /*{{{*/
 669 APT_CONST void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &/*pkg*/,
 670                                        std::string const &/*pattern*/) {
 671 }
 672                                                                         /*}}}*/
 673 // showRegExSelection                                                   /*{{{*/
 674 APT_CONST void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &/*pkg*/,
 675                                         std::string const &/*pattern*/) {
 676 }
 677                                                                         /*}}}*/
 678 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 679 // showFnmatchSelection                                                 /*{{{*/
 680 APT_CONST void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &/*pkg*/,
 681                                          std::string const &/*pattern*/) {
 682 }
 683                                                                         /*}}}*/
 684 #endif
 685 // showSelectedVersion                                                  /*{{{*/
 686 APT_CONST void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/,
 687                                          pkgCache::VerIterator const /*Ver*/,
 688                                          std::string const &/*ver*/,
 689                                          bool const /*verIsRel*/) {
 690 }
 691                                                                         /*}}}*/
 692 }