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 #include <apt-pkg/fileutl.h>
  28
  29 #include <stddef.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <regex.h>
  33 #include <list>
  34 #include <string>
  35 #include <vector>
  36
  37 #include <apti18n.h>
  38                                                                         /*}}}*/
  39 namespace APT {
  40 // FromTask - Return all packages in the cache from a specific task     /*{{{*/
  41 bool PackageContainerInterface::FromTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
  42         size_t const archfound = pattern.find_last_of(':');
  43         std::string arch = "native";
  44         if (archfound != std::string::npos) {
  45                 arch = pattern.substr(archfound+1);
  46                 pattern.erase(archfound);
  47         }
  48
  49         if (pattern[pattern.length() -1] != '^')
  50                 return false;
  51         pattern.erase(pattern.length()-1);
  52
  53         if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
  54                 return false;
  55
  56         bool const wasEmpty = pci->empty();
  57         if (wasEmpty == true)
  58                 pci->setConstructor(TASK);
  59
  60         // get the records
  61         pkgRecords Recs(Cache);
  62
  63         // build regexp for the task
  64         regex_t Pattern;
  65         char S[300];
  66         snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
  67         if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
  68                 _error->Error("Failed to compile task regexp");
  69                 return false;
  70         }
  71
  72         bool found = false;
  73         for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
  74                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
  75                 if (Pkg.end() == true)
  76                         continue;
  77                 pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
  78                 if(ver.end() == true)
  79                         continue;
  80
  81                 pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
  82                 const char *start, *end;
  83                 parser.GetRec(start,end);
  84                 unsigned int const length = end - start;
  85                 if (unlikely(length == 0))
  86                    continue;
  87                 char buf[length];
  88                 strncpy(buf, start, length);
  89                 buf[length-1] = '\0';
  90                 if (regexec(&Pattern, buf, 0, 0, 0) != 0)
  91                         continue;
  92
  93                 pci->insert(Pkg);
  94                 helper.showTaskSelection(Pkg, pattern);
  95                 found = true;
  96         }
  97         regfree(&Pattern);
  98
  99         if (found == false) {
 100                 helper.canNotFindTask(pci, Cache, pattern);
 101                 pci->setConstructor(UNKNOWN);
 102                 return false;
 103         }
 104
 105         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 106                 pci->setConstructor(UNKNOWN);
 107
 108         return true;
 109 }
 110                                                                         /*}}}*/
 111 // FromRegEx - Return all packages in the cache matching a pattern      /*{{{*/
 112 bool PackageContainerInterface::FromRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
 113         static const char * const isregex = ".?+*|[^$";
 114         if (pattern.find_first_of(isregex) == std::string::npos)
 115                 return false;
 116
 117         bool const wasEmpty = pci->empty();
 118         if (wasEmpty == true)
 119                 pci->setConstructor(REGEX);
 120
 121         size_t archfound = pattern.find_last_of(':');
 122         std::string arch = "native";
 123         if (archfound != std::string::npos) {
 124                 arch = pattern.substr(archfound+1);
 125                 if (arch.find_first_of(isregex) == std::string::npos)
 126                         pattern.erase(archfound);
 127                 else
 128                         arch = "native";
 129         }
 130
 131         if (unlikely(Cache.GetPkgCache() == 0))
 132                 return false;
 133
 134         APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
 135
 136         bool found = false;
 137         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 138                 if (regexfilter(Grp) == false)
 139                         continue;
 140                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 141                 if (Pkg.end() == true) {
 142                         if (archfound == std::string::npos) {
 143                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 144                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 145                                      a != archs.end() && Pkg.end() != true; ++a)
 146                                         Pkg = Grp.FindPkg(*a);
 147                         }
 148                         if (Pkg.end() == true)
 149                                 continue;
 150                 }
 151
 152                 pci->insert(Pkg);
 153                 helper.showRegExSelection(Pkg, pattern);
 154                 found = true;
 155         }
 156
 157         if (found == false) {
 158                 helper.canNotFindRegEx(pci, Cache, pattern);
 159                 pci->setConstructor(UNKNOWN);
 160                 return false;
 161         }
 162
 163         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 164                 pci->setConstructor(UNKNOWN);
 165
 166         return true;
 167 }
 168                                                                         /*}}}*/
 169 // FromFnmatch - Returns the package defined  by this fnmatch           /*{{{*/
 170 bool
 171 PackageContainerInterface::FromFnmatch(PackageContainerInterface * const pci,
 172                                        pkgCacheFile &Cache,
 173                                        std::string pattern,
 174                                        CacheSetHelper &helper)
 175 {
 176         static const char * const isfnmatch = ".?*[]!";
 177         if (pattern.find_first_of(isfnmatch) == std::string::npos)
 178                 return false;
 179
 180         bool const wasEmpty = pci->empty();
 181         if (wasEmpty == true)
 182                 pci->setConstructor(FNMATCH);
 183
 184         size_t archfound = pattern.find_last_of(':');
 185         std::string arch = "native";
 186         if (archfound != std::string::npos) {
 187                 arch = pattern.substr(archfound+1);
 188                 if (arch.find_first_of(isfnmatch) == std::string::npos)
 189                         pattern.erase(archfound);
 190                 else
 191                         arch = "native";
 192         }
 193
 194         if (unlikely(Cache.GetPkgCache() == 0))
 195                 return false;
 196
 197         APT::CacheFilter::PackageNameMatchesFnmatch filter(pattern);
 198
 199         bool found = false;
 200         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 201                 if (filter(Grp) == false)
 202                         continue;
 203                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 204                 if (Pkg.end() == true) {
 205                         if (archfound == std::string::npos) {
 206                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 207                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 208                                      a != archs.end() && Pkg.end() != true; ++a)
 209                                         Pkg = Grp.FindPkg(*a);
 210                         }
 211                         if (Pkg.end() == true)
 212                                 continue;
 213                 }
 214
 215                 pci->insert(Pkg);
 216 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 217                 helper.showFnmatchSelection(Pkg, pattern);
 218 #else
 219                 helper.showRegExSelection(Pkg, pattern);
 220 #endif
 221                 found = true;
 222         }
 223
 224         if (found == false) {
 225 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 226                 helper.canNotFindFnmatch(pci, Cache, pattern);
 227 #else
 228                 helper.canNotFindRegEx(pci, Cache, pattern);
 229 #endif
 230                 pci->setConstructor(UNKNOWN);
 231                 return false;
 232         }
 233
 234         if (wasEmpty == false && pci->getConstructor() != UNKNOWN)
 235                 pci->setConstructor(UNKNOWN);
 236
 237         return true;
 238 }
 239                                                                         /*}}}*/
 240 // FromName - Returns the package defined  by this string               /*{{{*/
 241 pkgCache::PkgIterator PackageContainerInterface::FromName(pkgCacheFile &Cache,
 242                         std::string const &str, CacheSetHelper &helper) {
 243         std::string pkg = str;
 244         size_t archfound = pkg.find_last_of(':');
 245         std::string arch;
 246         if (archfound != std::string::npos) {
 247                 arch = pkg.substr(archfound+1);
 248                 pkg.erase(archfound);
 249         }
 250
 251         if (Cache.GetPkgCache() == 0)
 252                 return pkgCache::PkgIterator(Cache, 0);
 253
 254         pkgCache::PkgIterator Pkg(Cache, 0);
 255         if (arch.empty() == true) {
 256                 pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 257                 if (Grp.end() == false)
 258                         Pkg = Grp.FindPreferredPkg();
 259         } else
 260                 Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
 261
 262         if (Pkg.end() == true)
 263                 return helper.canNotFindPkgName(Cache, str);
 264         return Pkg;
 265 }
 266                                                                         /*}}}*/
 267 // FromGroup - Returns the package defined  by this string              /*{{{*/
 268 bool PackageContainerInterface::FromGroup(PackageContainerInterface * const pci, pkgCacheFile &Cache,
 269                         std::string pkg, CacheSetHelper &helper) {
 270         if (unlikely(Cache.GetPkgCache() == 0))
 271                 return false;
 272
 273         size_t const archfound = pkg.find_last_of(':');
 274         std::string arch;
 275         if (archfound != std::string::npos) {
 276                 arch = pkg.substr(archfound+1);
 277                 pkg.erase(archfound);
 278                 if (arch == "all" || arch == "native")
 279                         arch = _config->Find("APT::Architecture");
 280         }
 281
 282         pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 283         if (Grp.end() == false) {
 284                 if (arch.empty() == true) {
 285                         pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
 286                         if (Pkg.end() == false)
 287                         {
 288                            pci->insert(Pkg);
 289                            return true;
 290                         }
 291                 } else {
 292                         bool found = false;
 293                         // for 'linux-any' return the first package matching, for 'linux-*' return all matches
 294                         bool const isGlobal = arch.find('*') != std::string::npos;
 295                         APT::CacheFilter::PackageArchitectureMatchesSpecification pams(arch);
 296                         for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) {
 297                                 if (pams(Pkg) == false)
 298                                         continue;
 299                                 pci->insert(Pkg);
 300                                 found = true;
 301                                 if (isGlobal == false)
 302                                         break;
 303                         }
 304                         if (found == true)
 305                                 return true;
 306                 }
 307         }
 308
 309         pkgCache::PkgIterator Pkg = helper.canNotFindPkgName(Cache, pkg);
 310         if (Pkg.end() == true)
 311            return false;
 312
 313         pci->insert(Pkg);
 314         return true;
 315 }
 316                                                                         /*}}}*/
 317 // FromString - Return all packages matching a specific string          /*{{{*/
 318 bool PackageContainerInterface::FromString(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
 319         bool found = true;
 320         _error->PushToStack();
 321
 322         if (FromGroup(pci, Cache, str, helper) == false &&
 323                  FromTask(pci, Cache, str, helper) == false &&
 324 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 325                  // FIXME: hm, hm, regexp/fnmatch incompatible?
 326                  FromFnmatch(pci, Cache, str, helper) == false &&
 327 #endif
 328                  FromRegEx(pci, Cache, str, helper) == false)
 329         {
 330                 helper.canNotFindPackage(pci, Cache, str);
 331                 found = false;
 332         }
 333
 334         if (found == true)
 335                 _error->RevertToStack();
 336         else
 337                 _error->MergeWithStack();
 338         return found;
 339 }
 340                                                                         /*}}}*/
 341 // FromCommandLine - Return all packages specified on commandline       /*{{{*/
 342 bool PackageContainerInterface::FromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
 343         bool found = false;
 344         for (const char **I = cmdline; *I != 0; ++I)
 345                 found |= PackageContainerInterface::FromString(pci, Cache, *I, helper);
 346         return found;
 347 }
 348                                                                         /*}}}*/
 349 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 350 bool PackageContainerInterface::FromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 351                                                         pkgCacheFile &Cache, const char * cmdline,
 352                                                         std::list<Modifier> const &mods, CacheSetHelper &helper) {
 353         std::string str = cmdline;
 354         unsigned short fallback = modID;
 355         bool modifierPresent = false;
 356         for (std::list<Modifier>::const_iterator mod = mods.begin();
 357              mod != mods.end(); ++mod) {
 358                 size_t const alength = strlen(mod->Alias);
 359                 switch(mod->Pos) {
 360                 case Modifier::POSTFIX:
 361                         if (str.compare(str.length() - alength, alength,
 362                                         mod->Alias, 0, alength) != 0)
 363                                 continue;
 364                         str.erase(str.length() - alength);
 365                         modID = mod->ID;
 366                         break;
 367                 case Modifier::PREFIX:
 368                         continue;
 369                 case Modifier::NONE:
 370                         continue;
 371                 }
 372                 modifierPresent = true;
 373                 break;
 374         }
 375         if (modifierPresent == true) {
 376                 bool const errors = helper.showErrors(false);
 377                 pkgCache::PkgIterator Pkg = FromName(Cache, cmdline, helper);
 378                 helper.showErrors(errors);
 379                 if (Pkg.end() == false) {
 380                         pci->insert(Pkg);
 381                         modID = fallback;
 382                         return true;
 383                 }
 384         }
 385         return FromString(pci, Cache, str, helper);
 386 }
 387                                                                         /*}}}*/
 388 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 389 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 390                                                         VersionContainerInterface * const vci,
 391                                                         pkgCacheFile &Cache, const char * cmdline,
 392                                                         std::list<Modifier> const &mods,
 393                                                         CacheSetHelper &helper) {
 394         Version select = NEWEST;
 395         std::string str = cmdline;
 396         if (unlikely(str.empty() == true))
 397                 return false;
 398         bool modifierPresent = false;
 399         unsigned short fallback = modID;
 400         for (std::list<Modifier>::const_iterator mod = mods.begin();
 401              mod != mods.end(); ++mod) {
 402                 if (modID == fallback && mod->ID == fallback)
 403                         select = mod->SelectVersion;
 404                 size_t const alength = strlen(mod->Alias);
 405                 switch(mod->Pos) {
 406                 case Modifier::POSTFIX:
 407                         if (str.length() <= alength ||
 408                               str.compare(str.length() - alength, alength, mod->Alias, 0, alength) != 0)
 409                                 continue;
 410                         str.erase(str.length() - alength);
 411                         modID = mod->ID;
 412                         select = mod->SelectVersion;
 413                         break;
 414                 case Modifier::PREFIX:
 415                         continue;
 416                 case Modifier::NONE:
 417                         continue;
 418                 }
 419                 modifierPresent = true;
 420                 break;
 421         }
 422         if (modifierPresent == true) {
 423                 bool const errors = helper.showErrors(false);
 424                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 425                 helper.showErrors(errors);
 426                 if (found == true) {
 427                         modID = fallback;
 428                         return true;
 429                 }
 430         }
 431         return FromString(vci, Cache, str, select, helper);
 432 }
 433                                                                         /*}}}*/
 434 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 435 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 436                                                 pkgCacheFile &Cache, const char **cmdline,
 437                                                 Version const &fallback, CacheSetHelper &helper) {
 438         bool found = false;
 439         for (const char **I = cmdline; *I != 0; ++I)
 440                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 441         return found;
 442 }
 443                                                                         /*}}}*/
 444 // FromString - Returns all versions spedcified by a string             /*{{{*/
 445 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 446                                            pkgCacheFile &Cache, std::string pkg,
 447                                            Version const &fallback, CacheSetHelper &helper,
 448                                            bool const onlyFromName) {
 449         PackageSet pkgset;
 450         if(FileExists(pkg))
 451         {
 452                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 453                 return VersionContainerInterface::FromPackage(vci, Cache, pkgset.begin(), fallback, helper);
 454         }
 455
 456         std::string ver;
 457         bool verIsRel = false;
 458         size_t const vertag = pkg.find_last_of("/=");
 459         if (vertag != std::string::npos) {
 460                 ver = pkg.substr(vertag+1);
 461                 verIsRel = (pkg[vertag] == '/');
 462                 pkg.erase(vertag);
 463         }
 464         if (onlyFromName == false)
 465                 PackageContainerInterface::FromString(&pkgset, Cache, pkg, helper);
 466         else {
 467                 pkgset.insert(PackageContainerInterface::FromName(Cache, pkg, helper));
 468         }
 469
 470         bool errors = true;
 471         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 472                 errors = helper.showErrors(false);
 473
 474         bool found = false;
 475         for (PackageSet::const_iterator P = pkgset.begin();
 476              P != pkgset.end(); ++P) {
 477                 if (vertag == std::string::npos) {
 478                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 479                         continue;
 480                 }
 481                 pkgCache::VerIterator V;
 482                 if (ver == "installed")
 483                         V = getInstalledVer(Cache, P, helper);
 484                 else if (ver == "candidate")
 485                         V = getCandidateVer(Cache, P, helper);
 486                 else if (ver == "newest") {
 487                         if (P->VersionList != 0)
 488                                 V = P.VersionList();
 489                         else
 490                                 V = helper.canNotFindNewestVer(Cache, P);
 491                 } else {
 492                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 493                                         pkgVersionMatch::Version));
 494                         V = Match.Find(P);
 495                         if (V.end() == true) {
 496                                 if (verIsRel == true)
 497                                         _error->Error(_("Release '%s' for '%s' was not found"),
 498                                                         ver.c_str(), P.FullName(true).c_str());
 499                                 else
 500                                         _error->Error(_("Version '%s' for '%s' was not found"),
 501                                                         ver.c_str(), P.FullName(true).c_str());
 502                                 continue;
 503                         }
 504                 }
 505                 if (V.end() == true)
 506                         continue;
 507                 helper.showSelectedVersion(P, V, ver, verIsRel);
 508                 vci->insert(V);
 509                 found = true;
 510         }
 511         if (pkgset.getConstructor() != PackageSet::UNKNOWN)
 512                 helper.showErrors(errors);
 513         return found;
 514 }
 515                                                                         /*}}}*/
 516 // FromPackage - versions from package based on fallback                /*{{{*/
 517 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 518                                             pkgCacheFile &Cache,
 519                                             pkgCache::PkgIterator const &P,
 520                                             Version const &fallback,
 521                                             CacheSetHelper &helper) {
 522         pkgCache::VerIterator V;
 523         bool showErrors;
 524         bool found = false;
 525         switch(fallback) {
 526         case ALL:
 527                 if (P->VersionList != 0)
 528                         for (V = P.VersionList(); V.end() != true; ++V)
 529                                 found |= vci->insert(V);
 530                 else
 531                         helper.canNotFindAllVer(vci, Cache, P);
 532                 break;
 533         case CANDANDINST:
 534                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 535                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 536                 break;
 537         case CANDIDATE:
 538                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 539                 break;
 540         case INSTALLED:
 541                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 542                 break;
 543         case CANDINST:
 544                 showErrors = helper.showErrors(false);
 545                 V = getCandidateVer(Cache, P, helper);
 546                 if (V.end() == true)
 547                         V = getInstalledVer(Cache, P, helper);
 548                 helper.showErrors(showErrors);
 549                 if (V.end() == false)
 550                         found |= vci->insert(V);
 551                 else
 552                         helper.canNotFindInstCandVer(vci, Cache, P);
 553                 break;
 554         case INSTCAND:
 555                 showErrors = helper.showErrors(false);
 556                 V = getInstalledVer(Cache, P, helper);
 557                 if (V.end() == true)
 558                         V = getCandidateVer(Cache, P, helper);
 559                 helper.showErrors(showErrors);
 560                 if (V.end() == false)
 561                         found |= vci->insert(V);
 562                 else
 563                         helper.canNotFindInstCandVer(vci, Cache, P);
 564                 break;
 565         case NEWEST:
 566                 if (P->VersionList != 0)
 567                         found |= vci->insert(P.VersionList());
 568                 else
 569                         helper.canNotFindNewestVer(Cache, P);
 570                 break;
 571         }
 572         return found;
 573 }
 574                                                                         /*}}}*/
 575 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 576 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 577                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 578         pkgCache::VerIterator Cand;
 579         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 580                 if (unlikely(Cache.GetPolicy() == 0))
 581                         return pkgCache::VerIterator(Cache);
 582                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 583         } else {
 584                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 585         }
 586         if (Cand.end() == true)
 587                 return helper.canNotFindCandidateVer(Cache, Pkg);
 588         return Cand;
 589 }
 590                                                                         /*}}}*/
 591 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 592 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 593                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 594         if (Pkg->CurrentVer == 0)
 595                 return helper.canNotFindInstalledVer(Cache, Pkg);
 596         return Pkg.CurrentVer();
 597 }
 598                                                                         /*}}}*/
 599
 600 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 601 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 602                         std::string const &str) {
 603         if (ShowError == true)
 604                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 605         return pkgCache::PkgIterator(Cache, 0);
 606 }
 607                                                                         /*}}}*/
 608 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 609 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 610         if (ShowError == true)
 611                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 612 }
 613                                                                         /*}}}*/
 614 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 615 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 616         if (ShowError == true)
 617                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 618 }
 619 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 620 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 621    void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 622         if (ShowError == true)
 623                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 624 }
 625 #endif                                                                  /*}}}*/
 626 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 627 APT_CONST void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string const &/*str*/) {
 628 }
 629                                                                         /*}}}*/
 630 // canNotFindAllVer                                                     /*{{{*/
 631 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 632                 pkgCache::PkgIterator const &Pkg) {
 633         if (ShowError == true)
 634                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 635 }
 636                                                                         /*}}}*/
 637 // canNotFindInstCandVer                                                /*{{{*/
 638 void CacheSetHelper::canNotFindInstCandVer(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 // canNotFindInstCandVer                                                /*{{{*/
 645 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 646                 pkgCache::PkgIterator const &Pkg) {
 647         if (ShowError == true)
 648                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 649 }
 650                                                                         /*}}}*/
 651 // canNotFindNewestVer                                                  /*{{{*/
 652 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 653                 pkgCache::PkgIterator const &Pkg) {
 654         if (ShowError == true)
 655                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 656         return pkgCache::VerIterator(Cache, 0);
 657 }
 658                                                                         /*}}}*/
 659 // canNotFindCandidateVer                                               /*{{{*/
 660 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 661                 pkgCache::PkgIterator const &Pkg) {
 662         if (ShowError == true)
 663                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 664         return pkgCache::VerIterator(Cache, 0);
 665 }
 666                                                                         /*}}}*/
 667 // canNotFindInstalledVer                                               /*{{{*/
 668 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 669                 pkgCache::PkgIterator const &Pkg) {
 670         if (ShowError == true)
 671                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 672         return pkgCache::VerIterator(Cache, 0);
 673 }
 674                                                                         /*}}}*/
 675 // showTaskSelection                                                    /*{{{*/
 676 APT_CONST void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &/*pkg*/,
 677                                        std::string const &/*pattern*/) {
 678 }
 679                                                                         /*}}}*/
 680 // showRegExSelection                                                   /*{{{*/
 681 APT_CONST void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &/*pkg*/,
 682                                         std::string const &/*pattern*/) {
 683 }
 684                                                                         /*}}}*/
 685 #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 686 // showFnmatchSelection                                                 /*{{{*/
 687 APT_CONST void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &/*pkg*/,
 688                                          std::string const &/*pattern*/) {
 689 }
 690                                                                         /*}}}*/
 691 #endif
 692 // showSelectedVersion                                                  /*{{{*/
 693 APT_CONST void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/,
 694                                          pkgCache::VerIterator const /*Ver*/,
 695                                          std::string const &/*ver*/,
 696                                          bool const /*verIsRel*/) {
 697 }
 698                                                                         /*}}}*/
 699 }