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
  41 // PackageFrom - selecting the appropriate method for package selection /*{{{*/
  42 bool CacheSetHelper::PackageFrom(enum PkgSelector const select, PackageContainerInterface * const pci,
  43       pkgCacheFile &Cache, std::string const &pattern) {
  44         switch (select) {
  45         case UNKNOWN: return false;
  46         case REGEX: return PackageFromRegEx(pci, Cache, pattern);
  47         case TASK: return PackageFromTask(pci, Cache, pattern);
  48         case FNMATCH: return PackageFromFnmatch(pci, Cache, pattern);
  49         case PACKAGENAME: return PackageFromPackageName(pci, Cache, pattern);
  50         case STRING: return PackageFromString(pci, Cache, pattern);
  51         }
  52         return false;
  53 }
  54                                                                         /*}}}*/
  55 // PackageFromTask - Return all packages in the cache from a specific task /*{{{*/
  56 bool CacheSetHelper::PackageFromTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
  57         size_t const archfound = pattern.find_last_of(':');
  58         std::string arch = "native";
  59         if (archfound != std::string::npos) {
  60                 arch = pattern.substr(archfound+1);
  61                 pattern.erase(archfound);
  62         }
  63
  64         if (pattern[pattern.length() -1] != '^')
  65                 return false;
  66         pattern.erase(pattern.length()-1);
  67
  68         if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
  69                 return false;
  70
  71         bool const wasEmpty = pci->empty();
  72         if (wasEmpty == true)
  73                 pci->setConstructor(CacheSetHelper::TASK);
  74
  75         // get the records
  76         pkgRecords Recs(Cache);
  77
  78         // build regexp for the task
  79         regex_t Pattern;
  80         char S[300];
  81         snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
  82         if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
  83                 _error->Error("Failed to compile task regexp");
  84                 return false;
  85         }
  86
  87         bool found = false;
  88         for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
  89                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
  90                 if (Pkg.end() == true)
  91                         continue;
  92                 pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
  93                 if(ver.end() == true)
  94                         continue;
  95
  96                 pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
  97                 const char *start, *end;
  98                 parser.GetRec(start,end);
  99                 unsigned int const length = end - start;
 100                 if (unlikely(length == 0))
 101                    continue;
 102                 char buf[length];
 103                 strncpy(buf, start, length);
 104                 buf[length-1] = '\0';
 105                 if (regexec(&Pattern, buf, 0, 0, 0) != 0)
 106                         continue;
 107
 108                 pci->insert(Pkg);
 109                 showPackageSelection(Pkg, CacheSetHelper::TASK, pattern);
 110                 found = true;
 111         }
 112         regfree(&Pattern);
 113
 114         if (found == false) {
 115                 canNotFindPackage(CacheSetHelper::TASK, pci, Cache, pattern);
 116                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 117                 return false;
 118         }
 119
 120         if (wasEmpty == false && pci->getConstructor() != CacheSetHelper::UNKNOWN)
 121                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 122
 123         return true;
 124 }
 125                                                                         /*}}}*/
 126 // PackageFromRegEx - Return all packages in the cache matching a pattern /*{{{*/
 127 bool CacheSetHelper::PackageFromRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 128         static const char * const isregex = ".?+*|[^$";
 129         if (pattern.find_first_of(isregex) == std::string::npos)
 130                 return false;
 131
 132         bool const wasEmpty = pci->empty();
 133         if (wasEmpty == true)
 134                 pci->setConstructor(CacheSetHelper::REGEX);
 135
 136         size_t archfound = pattern.find_last_of(':');
 137         std::string arch = "native";
 138         if (archfound != std::string::npos) {
 139                 arch = pattern.substr(archfound+1);
 140                 if (arch.find_first_of(isregex) == std::string::npos)
 141                         pattern.erase(archfound);
 142                 else
 143                         arch = "native";
 144         }
 145
 146         if (unlikely(Cache.GetPkgCache() == 0))
 147                 return false;
 148
 149         APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
 150
 151         bool found = false;
 152         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 153                 if (regexfilter(Grp) == false)
 154                         continue;
 155                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 156                 if (Pkg.end() == true) {
 157                         if (archfound == std::string::npos) {
 158                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 159                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 160                                      a != archs.end() && Pkg.end() != true; ++a)
 161                                         Pkg = Grp.FindPkg(*a);
 162                         }
 163                         if (Pkg.end() == true)
 164                                 continue;
 165                 }
 166
 167                 pci->insert(Pkg);
 168                 showPackageSelection(Pkg, CacheSetHelper::REGEX, pattern);
 169                 found = true;
 170         }
 171
 172         if (found == false) {
 173                 canNotFindPackage(CacheSetHelper::REGEX, pci, Cache, pattern);
 174                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 175                 return false;
 176         }
 177
 178         if (wasEmpty == false && pci->getConstructor() != CacheSetHelper::UNKNOWN)
 179                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 180
 181         return true;
 182 }
 183                                                                         /*}}}*/
 184 // PackageFromFnmatch - Returns the package defined  by this fnmatch    /*{{{*/
 185 bool CacheSetHelper::PackageFromFnmatch(PackageContainerInterface * const pci,
 186                                        pkgCacheFile &Cache, std::string pattern)
 187 {
 188         static const char * const isfnmatch = ".?*[]!";
 189         if (pattern.find_first_of(isfnmatch) == std::string::npos)
 190                 return false;
 191
 192         bool const wasEmpty = pci->empty();
 193         if (wasEmpty == true)
 194                 pci->setConstructor(CacheSetHelper::FNMATCH);
 195
 196         size_t archfound = pattern.find_last_of(':');
 197         std::string arch = "native";
 198         if (archfound != std::string::npos) {
 199                 arch = pattern.substr(archfound+1);
 200                 if (arch.find_first_of(isfnmatch) == std::string::npos)
 201                         pattern.erase(archfound);
 202                 else
 203                         arch = "native";
 204         }
 205
 206         if (unlikely(Cache.GetPkgCache() == 0))
 207                 return false;
 208
 209         APT::CacheFilter::PackageNameMatchesFnmatch filter(pattern);
 210
 211         bool found = false;
 212         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 213                 if (filter(Grp) == false)
 214                         continue;
 215                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 216                 if (Pkg.end() == true) {
 217                         if (archfound == std::string::npos) {
 218                                 std::vector<std::string> archs = APT::Configuration::getArchitectures();
 219                                 for (std::vector<std::string>::const_iterator a = archs.begin();
 220                                      a != archs.end() && Pkg.end() != true; ++a)
 221                                         Pkg = Grp.FindPkg(*a);
 222                         }
 223                         if (Pkg.end() == true)
 224                                 continue;
 225                 }
 226
 227                 pci->insert(Pkg);
 228                 showPackageSelection(Pkg, CacheSetHelper::FNMATCH, pattern);
 229                 found = true;
 230         }
 231
 232         if (found == false) {
 233                 canNotFindPackage(CacheSetHelper::FNMATCH, pci, Cache, pattern);
 234                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 235                 return false;
 236         }
 237
 238         if (wasEmpty == false && pci->getConstructor() != CacheSetHelper::UNKNOWN)
 239                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 240
 241         return true;
 242 }
 243                                                                         /*}}}*/
 244 // PackageFromName - Returns the package defined  by this string        /*{{{*/
 245 pkgCache::PkgIterator CacheSetHelper::PackageFromName(pkgCacheFile &Cache,
 246                         std::string const &str) {
 247         std::string pkg = str;
 248         size_t archfound = pkg.find_last_of(':');
 249         std::string arch;
 250         if (archfound != std::string::npos) {
 251                 arch = pkg.substr(archfound+1);
 252                 pkg.erase(archfound);
 253         }
 254
 255         if (Cache.GetPkgCache() == 0)
 256                 return pkgCache::PkgIterator(Cache, 0);
 257
 258         pkgCache::PkgIterator Pkg(Cache, 0);
 259         if (arch.empty() == true) {
 260                 pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 261                 if (Grp.end() == false)
 262                         Pkg = Grp.FindPreferredPkg();
 263         } else
 264                 Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
 265
 266         if (Pkg.end() == true)
 267                 return canNotFindPkgName(Cache, str);
 268         return Pkg;
 269 }
 270                                                                         /*}}}*/
 271 // PackageFromPackageName - Returns the package defined  by this string /*{{{*/
 272 bool CacheSetHelper::PackageFromPackageName(PackageContainerInterface * const pci, pkgCacheFile &Cache,
 273                         std::string pkg) {
 274         if (unlikely(Cache.GetPkgCache() == 0))
 275                 return false;
 276
 277         size_t const archfound = pkg.find_last_of(':');
 278         std::string arch;
 279         if (archfound != std::string::npos) {
 280                 arch = pkg.substr(archfound+1);
 281                 pkg.erase(archfound);
 282                 if (arch == "all" || arch == "native")
 283                         arch = _config->Find("APT::Architecture");
 284         }
 285
 286         pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 287         if (Grp.end() == false) {
 288                 if (arch.empty() == true) {
 289                         pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
 290                         if (Pkg.end() == false)
 291                         {
 292                            pci->insert(Pkg);
 293                            return true;
 294                         }
 295                 } else {
 296                         bool found = false;
 297                         // for 'linux-any' return the first package matching, for 'linux-*' return all matches
 298                         bool const isGlobal = arch.find('*') != std::string::npos;
 299                         APT::CacheFilter::PackageArchitectureMatchesSpecification pams(arch);
 300                         for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) {
 301                                 if (pams(Pkg) == false)
 302                                         continue;
 303                                 pci->insert(Pkg);
 304                                 found = true;
 305                                 if (isGlobal == false)
 306                                         break;
 307                         }
 308                         if (found == true)
 309                                 return true;
 310                 }
 311         }
 312
 313         pkgCache::PkgIterator Pkg = canNotFindPkgName(Cache, pkg);
 314         if (Pkg.end() == true)
 315            return false;
 316
 317         pci->insert(Pkg);
 318         return true;
 319 }
 320                                                                         /*}}}*/
 321 // PackageFromString - Return all packages matching a specific string   /*{{{*/
 322 bool CacheSetHelper::PackageFromString(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str) {
 323         bool found = true;
 324         _error->PushToStack();
 325
 326         if (PackageFrom(CacheSetHelper::PACKAGENAME, pci, Cache, str) == false &&
 327                  PackageFrom(CacheSetHelper::TASK, pci, Cache, str) == false &&
 328                  // FIXME: hm, hm, regexp/fnmatch incompatible?
 329                  PackageFrom(CacheSetHelper::FNMATCH, pci, Cache, str) == false &&
 330                  PackageFrom(CacheSetHelper::REGEX, pci, Cache, str) == false)
 331         {
 332                 canNotFindPackage(CacheSetHelper::PACKAGENAME, pci, Cache, str);
 333                 found = false;
 334         }
 335
 336         if (found == true)
 337                 _error->RevertToStack();
 338         else
 339                 _error->MergeWithStack();
 340         return found;
 341 }
 342                                                                         /*}}}*/
 343 // PackageFromCommandLine - Return all packages specified on commandline /*{{{*/
 344 bool CacheSetHelper::PackageFromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline) {
 345         bool found = false;
 346         for (const char **I = cmdline; *I != 0; ++I)
 347                 found |= PackageFrom(CacheSetHelper::PACKAGENAME, pci, Cache, *I);
 348         return found;
 349 }
 350                                                                         /*}}}*/
 351 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 352 bool CacheSetHelper::PackageFromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 353                                                         pkgCacheFile &Cache, const char * cmdline,
 354                                                         std::list<PkgModifier> const &mods) {
 355         std::string str = cmdline;
 356         unsigned short fallback = modID;
 357         bool modifierPresent = false;
 358         for (std::list<PkgModifier>::const_iterator mod = mods.begin();
 359              mod != mods.end(); ++mod) {
 360                 size_t const alength = strlen(mod->Alias);
 361                 switch(mod->Pos) {
 362                 case PkgModifier::POSTFIX:
 363                         if (str.compare(str.length() - alength, alength,
 364                                         mod->Alias, 0, alength) != 0)
 365                                 continue;
 366                         str.erase(str.length() - alength);
 367                         modID = mod->ID;
 368                         break;
 369                 case PkgModifier::PREFIX:
 370                         continue;
 371                 case PkgModifier::NONE:
 372                         continue;
 373                 }
 374                 modifierPresent = true;
 375                 break;
 376         }
 377         if (modifierPresent == true) {
 378                 bool const errors = showErrors(false);
 379                 bool const found = PackageFrom(PACKAGENAME, pci, Cache, cmdline);
 380                 showErrors(errors);
 381                 if (found == true) {
 382                         modID = fallback;
 383                         return true;
 384                 }
 385         }
 386         return PackageFrom(CacheSetHelper::PACKAGENAME, pci, Cache, str);
 387 }
 388                                                                         /*}}}*/
 389 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 390 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 391                                                         VersionContainerInterface * const vci,
 392                                                         pkgCacheFile &Cache, const char * cmdline,
 393                                                         std::list<Modifier> const &mods,
 394                                                         CacheSetHelper &helper) {
 395         CacheSetHelper::VerSelector select = CacheSetHelper::NEWEST;
 396         std::string str = cmdline;
 397         if (unlikely(str.empty() == true))
 398                 return false;
 399         bool modifierPresent = false;
 400         unsigned short fallback = modID;
 401         for (std::list<Modifier>::const_iterator mod = mods.begin();
 402              mod != mods.end(); ++mod) {
 403                 if (modID == fallback && mod->ID == fallback)
 404                         select = mod->SelectVersion;
 405                 size_t const alength = strlen(mod->Alias);
 406                 switch(mod->Pos) {
 407                 case Modifier::POSTFIX:
 408                         if (str.length() <= alength ||
 409                               str.compare(str.length() - alength, alength, mod->Alias, 0, alength) != 0)
 410                                 continue;
 411                         str.erase(str.length() - alength);
 412                         modID = mod->ID;
 413                         select = mod->SelectVersion;
 414                         break;
 415                 case Modifier::PREFIX:
 416                         continue;
 417                 case Modifier::NONE:
 418                         continue;
 419                 }
 420                 modifierPresent = true;
 421                 break;
 422         }
 423         if (modifierPresent == true) {
 424                 bool const errors = helper.showErrors(false);
 425                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 426                 helper.showErrors(errors);
 427                 if (found == true) {
 428                         modID = fallback;
 429                         return true;
 430                 }
 431         }
 432         return FromString(vci, Cache, str, select, helper);
 433 }
 434                                                                         /*}}}*/
 435 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 436 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 437                                                 pkgCacheFile &Cache, const char **cmdline,
 438                                                 CacheSetHelper::VerSelector const fallback,
 439                                                 CacheSetHelper &helper) {
 440         bool found = false;
 441         for (const char **I = cmdline; *I != 0; ++I)
 442                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 443         return found;
 444 }
 445                                                                         /*}}}*/
 446 // FromString - Returns all versions spedcified by a string             /*{{{*/
 447 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 448                                            pkgCacheFile &Cache, std::string pkg,
 449                                            CacheSetHelper::VerSelector const fallback,
 450                                            CacheSetHelper &helper,
 451                                            bool const onlyFromName) {
 452         PackageSet pkgset;
 453         if(FileExists(pkg)) {
 454                 helper.PackageFrom(CacheSetHelper::STRING, &pkgset, Cache, pkg);
 455                 if(pkgset.empty() == true)
 456                         return false;
 457                 return VersionContainerInterface::FromPackage(vci, Cache, pkgset.begin(), fallback, helper);
 458         }
 459
 460         std::string ver;
 461         bool verIsRel = false;
 462         size_t const vertag = pkg.find_last_of("/=");
 463         if (vertag != std::string::npos) {
 464                 ver = pkg.substr(vertag+1);
 465                 verIsRel = (pkg[vertag] == '/');
 466                 pkg.erase(vertag);
 467         }
 468         if (onlyFromName == false)
 469                 helper.PackageFrom(CacheSetHelper::STRING, &pkgset, Cache, pkg);
 470         else {
 471                 helper.PackageFrom(CacheSetHelper::PACKAGENAME, &pkgset, Cache, pkg);
 472         }
 473
 474         bool errors = true;
 475         if (pkgset.getConstructor() != CacheSetHelper::UNKNOWN)
 476                 errors = helper.showErrors(false);
 477
 478         bool found = false;
 479         for (PackageSet::const_iterator P = pkgset.begin();
 480              P != pkgset.end(); ++P) {
 481                 if (vertag == std::string::npos) {
 482                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 483                         continue;
 484                 }
 485                 pkgCache::VerIterator V;
 486                 if (ver == "installed")
 487                         V = getInstalledVer(Cache, P, helper);
 488                 else if (ver == "candidate")
 489                         V = getCandidateVer(Cache, P, helper);
 490                 else if (ver == "newest") {
 491                         if (P->VersionList != 0)
 492                                 V = P.VersionList();
 493                         else
 494                                 V = helper.canNotGetVersion(CacheSetHelper::NEWEST, Cache, P);
 495                 } else {
 496                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 497                                         pkgVersionMatch::Version));
 498                         V = Match.Find(P);
 499                         if (V.end() == true) {
 500                                 if (verIsRel == true)
 501                                         _error->Error(_("Release '%s' for '%s' was not found"),
 502                                                         ver.c_str(), P.FullName(true).c_str());
 503                                 else
 504                                         _error->Error(_("Version '%s' for '%s' was not found"),
 505                                                         ver.c_str(), P.FullName(true).c_str());
 506                                 continue;
 507                         }
 508                 }
 509                 if (V.end() == true)
 510                         continue;
 511                 if (verIsRel == true)
 512                         helper.showVersionSelection(P, V, CacheSetHelper::RELEASE, ver);
 513                 else
 514                         helper.showVersionSelection(P, V, CacheSetHelper::VERSIONNUMBER, ver);
 515                 vci->insert(V);
 516                 found = true;
 517         }
 518         if (pkgset.getConstructor() != CacheSetHelper::UNKNOWN)
 519                 helper.showErrors(errors);
 520         return found;
 521 }
 522                                                                         /*}}}*/
 523 // FromPackage - versions from package based on fallback                /*{{{*/
 524 bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vci,
 525                                             pkgCacheFile &Cache,
 526                                             pkgCache::PkgIterator const &P,
 527                                             CacheSetHelper::VerSelector const fallback,
 528                                             CacheSetHelper &helper) {
 529         pkgCache::VerIterator V;
 530         bool showErrors;
 531         bool found = false;
 532         switch(fallback) {
 533         case CacheSetHelper::ALL:
 534                 if (P->VersionList != 0)
 535                         for (V = P.VersionList(); V.end() != true; ++V)
 536                                 found |= vci->insert(V);
 537                 else
 538                         helper.canNotFindVersion(CacheSetHelper::ALL, vci, Cache, P);
 539                 break;
 540         case CacheSetHelper::CANDANDINST:
 541                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 542                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 543                 break;
 544         case CacheSetHelper::CANDIDATE:
 545                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 546                 break;
 547         case CacheSetHelper::INSTALLED:
 548                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 549                 break;
 550         case CacheSetHelper::CANDINST:
 551                 showErrors = helper.showErrors(false);
 552                 V = getCandidateVer(Cache, P, helper);
 553                 if (V.end() == true)
 554                         V = getInstalledVer(Cache, P, helper);
 555                 helper.showErrors(showErrors);
 556                 if (V.end() == false)
 557                         found |= vci->insert(V);
 558                 else
 559                         helper.canNotFindVersion(CacheSetHelper::CANDINST, vci, Cache, P);
 560                 break;
 561         case CacheSetHelper::INSTCAND:
 562                 showErrors = helper.showErrors(false);
 563                 V = getInstalledVer(Cache, P, helper);
 564                 if (V.end() == true)
 565                         V = getCandidateVer(Cache, P, helper);
 566                 helper.showErrors(showErrors);
 567                 if (V.end() == false)
 568                         found |= vci->insert(V);
 569                 else
 570                         helper.canNotFindVersion(CacheSetHelper::INSTCAND, vci, Cache, P);
 571                 break;
 572         case CacheSetHelper::NEWEST:
 573                 if (P->VersionList != 0)
 574                         found |= vci->insert(P.VersionList());
 575                 else
 576                         helper.canNotFindVersion(CacheSetHelper::NEWEST, vci, Cache, P);
 577                 break;
 578         case CacheSetHelper::RELEASE:
 579         case CacheSetHelper::VERSIONNUMBER:
 580                 // both make no sense here, so always false
 581                 return false;
 582         }
 583         return found;
 584 }
 585                                                                         /*}}}*/
 586 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 587 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 588                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 589         pkgCache::VerIterator Cand;
 590         if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
 591                 if (unlikely(Cache.GetPolicy() == 0))
 592                         return pkgCache::VerIterator(Cache);
 593                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 594         } else {
 595                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 596         }
 597         if (Cand.end() == true)
 598                 return helper.canNotGetVersion(CacheSetHelper::CANDIDATE, Cache, Pkg);
 599         return Cand;
 600 }
 601                                                                         /*}}}*/
 602 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 603 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 604                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 605         if (Pkg->CurrentVer == 0)
 606                 return helper.canNotGetVersion(CacheSetHelper::INSTALLED, Cache, Pkg);
 607         return Pkg.CurrentVer();
 608 }
 609                                                                         /*}}}*/
 610
 611 // canNotFindPackage - with the given selector and pattern              /*{{{*/
 612 void CacheSetHelper::canNotFindPackage(enum PkgSelector const select,
 613       PackageContainerInterface * const pci, pkgCacheFile &Cache,
 614       std::string const &pattern) {
 615         switch (select) {
 616 APT_IGNORE_DEPRECATED_PUSH
 617         case REGEX: canNotFindRegEx(pci, Cache, pattern); break;
 618         case TASK: canNotFindTask(pci, Cache, pattern); break;
 619         case FNMATCH: canNotFindFnmatch(pci, Cache, pattern); break;
 620         case PACKAGENAME: canNotFindPackage(pci, Cache, pattern); break;
 621         case STRING: canNotFindPackage(pci, Cache, pattern); break;
 622         case UNKNOWN: break;
 623 APT_IGNORE_DEPRECATED_POP
 624         }
 625 }
 626 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 627 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 628         if (ShowError == true)
 629                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 630 }
 631                                                                         /*}}}*/
 632 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 633 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 634         if (ShowError == true)
 635                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 636 }
 637                                                                         /*}}}*/
 638 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 639    void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 640         if (ShowError == true)
 641                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 642 }
 643                                                                         /*}}}*/
 644 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 645 APT_CONST void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string const &/*str*/) {
 646 }
 647                                                                         /*}}}*/
 648                                                                         /*}}}*/
 649 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 650 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 651                         std::string const &str) {
 652         if (ShowError == true)
 653                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 654         return pkgCache::PkgIterator(Cache, 0);
 655 }
 656                                                                         /*}}}*/
 657 // canNotFindVersion - for package by selector                          /*{{{*/
 658 void CacheSetHelper::canNotFindVersion(enum VerSelector const select, VersionContainerInterface * const vci, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg)
 659 {
 660         switch (select) {
 661 APT_IGNORE_DEPRECATED_PUSH
 662         case ALL: canNotFindAllVer(vci, Cache, Pkg); break;
 663         case INSTCAND: canNotFindInstCandVer(vci, Cache, Pkg); break;
 664         case CANDINST: canNotFindCandInstVer(vci, Cache, Pkg); break;
 665         case NEWEST: canNotFindNewestVer(Cache, Pkg); break;
 666         case CANDIDATE: canNotFindCandidateVer(Cache, Pkg); break;
 667         case INSTALLED: canNotFindInstalledVer(Cache, Pkg); break;
 668 APT_IGNORE_DEPRECATED_POP
 669         case CANDANDINST: canNotGetCandInstVer(Cache, Pkg); break;
 670         case RELEASE:
 671         case VERSIONNUMBER:
 672                 // invalid in this branch
 673                 break;
 674         }
 675 }
 676 // canNotFindAllVer                                                     /*{{{*/
 677 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 678                 pkgCache::PkgIterator const &Pkg) {
 679         if (ShowError == true)
 680                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 681 }
 682                                                                         /*}}}*/
 683 // canNotFindInstCandVer                                                /*{{{*/
 684 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &Cache,
 685                 pkgCache::PkgIterator const &Pkg) {
 686         canNotGetInstCandVer(Cache, Pkg);
 687 }
 688                                                                         /*}}}*/
 689 // canNotFindInstCandVer                                                /*{{{*/
 690 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &Cache,
 691                 pkgCache::PkgIterator const &Pkg) {
 692         canNotGetCandInstVer(Cache, Pkg);
 693 }
 694                                                                         /*}}}*/
 695                                                                         /*}}}*/
 696 // canNotGetVersion - for package by selector                           /*{{{*/
 697 pkgCache::VerIterator CacheSetHelper::canNotGetVersion(enum VerSelector const select, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 698         switch (select) {
 699 APT_IGNORE_DEPRECATED_PUSH
 700         case NEWEST: return canNotFindNewestVer(Cache, Pkg);
 701         case CANDIDATE: return canNotFindCandidateVer(Cache, Pkg);
 702         case INSTALLED: return canNotFindInstalledVer(Cache, Pkg);
 703 APT_IGNORE_DEPRECATED_POP
 704         case CANDINST: return canNotGetCandInstVer(Cache, Pkg);
 705         case INSTCAND: return canNotGetInstCandVer(Cache, Pkg);
 706         case ALL:
 707         case CANDANDINST:
 708         case RELEASE:
 709         case VERSIONNUMBER:
 710                 // invalid in this branch
 711                 return pkgCache::VerIterator(Cache, 0);
 712         }
 713         return pkgCache::VerIterator(Cache, 0);
 714 }
 715 // canNotFindNewestVer                                                  /*{{{*/
 716 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 717                 pkgCache::PkgIterator const &Pkg) {
 718         if (ShowError == true)
 719                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 720         return pkgCache::VerIterator(Cache, 0);
 721 }
 722                                                                         /*}}}*/
 723 // canNotFindCandidateVer                                               /*{{{*/
 724 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 725                 pkgCache::PkgIterator const &Pkg) {
 726         if (ShowError == true)
 727                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 728         return pkgCache::VerIterator(Cache, 0);
 729 }
 730                                                                         /*}}}*/
 731 // canNotFindInstalledVer                                               /*{{{*/
 732 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 733                 pkgCache::PkgIterator const &Pkg) {
 734         if (ShowError == true)
 735                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 736         return pkgCache::VerIterator(Cache, 0);
 737 }
 738                                                                         /*}}}*/
 739 // canNotFindInstCandVer                                                /*{{{*/
 740 pkgCache::VerIterator CacheSetHelper::canNotGetInstCandVer(pkgCacheFile &Cache,
 741                 pkgCache::PkgIterator const &Pkg) {
 742         if (ShowError == true)
 743                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 744         return pkgCache::VerIterator(Cache, 0);
 745 }
 746                                                                         /*}}}*/
 747 // canNotFindInstCandVer                                                /*{{{*/
 748 pkgCache::VerIterator CacheSetHelper::canNotGetCandInstVer(pkgCacheFile &Cache,
 749                 pkgCache::PkgIterator const &Pkg) {
 750         if (ShowError == true)
 751                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 752         return pkgCache::VerIterator(Cache, 0);
 753 }
 754                                                                         /*}}}*/
 755                                                                         /*}}}*/
 756 // showPackageSelection - by selector and given pattern                 /*{{{*/
 757 APT_CONST void CacheSetHelper::showPackageSelection(pkgCache::PkgIterator const &pkg, enum PkgSelector const select,
 758                                        std::string const &pattern) {
 759         switch (select) {
 760 APT_IGNORE_DEPRECATED_PUSH
 761         case REGEX: showRegExSelection(pkg, pattern); break;
 762         case TASK: showTaskSelection(pkg, pattern); break;
 763         case FNMATCH: showFnmatchSelection(pkg, pattern); break;
 764 APT_IGNORE_DEPRECATED_POP
 765         case PACKAGENAME: /* no suprises here */ break;
 766         case STRING: /* handled by the special cases */ break;
 767         case UNKNOWN: break;
 768         }
 769 }
 770 // showTaskSelection                                                    /*{{{*/
 771 APT_CONST void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &/*pkg*/,
 772                                        std::string const &/*pattern*/) {
 773 }
 774                                                                         /*}}}*/
 775 // showRegExSelection                                                   /*{{{*/
 776 APT_CONST void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &/*pkg*/,
 777                                         std::string const &/*pattern*/) {
 778 }
 779                                                                         /*}}}*/
 780 // showFnmatchSelection                                                 /*{{{*/
 781 APT_CONST void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &/*pkg*/,
 782                                          std::string const &/*pattern*/) {
 783 }
 784                                                                         /*}}}*/
 785                                                                         /*}}}*/
 786 // showVersionSelection                                                 /*{{{*/
 787 APT_CONST void CacheSetHelper::showVersionSelection(pkgCache::PkgIterator const &Pkg,
 788       pkgCache::VerIterator const &Ver, enum VerSelector const select, std::string const &pattern) {
 789         switch (select) {
 790 APT_IGNORE_DEPRECATED_PUSH
 791         case RELEASE:
 792                 showSelectedVersion(Pkg, Ver, pattern, true);
 793                 break;
 794         case VERSIONNUMBER:
 795                 showSelectedVersion(Pkg, Ver, pattern, false);
 796                 break;
 797 APT_IGNORE_DEPRECATED_POP
 798         case NEWEST:
 799         case CANDIDATE:
 800         case INSTALLED:
 801         case CANDINST:
 802         case INSTCAND:
 803         case ALL:
 804         case CANDANDINST:
 805                 // not really suprises, but in fact: just not implemented
 806                 break;
 807         }
 808 }
 809 APT_CONST void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/,
 810                                          pkgCache::VerIterator const /*Ver*/,
 811                                          std::string const &/*ver*/,
 812                                          bool const /*verIsRel*/) {
 813 }
 814                                                                         /*}}}*/
 815 }