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 // PackageFrom - selecting the appropriate method for package selection /*{{{*/
  41 bool CacheSetHelper::PackageFrom(enum PkgSelector const select, PackageContainerInterface * const pci,
  42       pkgCacheFile &Cache, std::string const &pattern) {
  43         switch (select) {
  44         case UNKNOWN: return false;
  45         case REGEX: return PackageFromRegEx(pci, Cache, pattern);
  46         case TASK: return PackageFromTask(pci, Cache, pattern);
  47         case FNMATCH: return PackageFromFnmatch(pci, Cache, pattern);
  48         case PACKAGENAME: return PackageFromPackageName(pci, Cache, pattern);
  49         case STRING: return PackageFromString(pci, Cache, pattern);
  50         }
  51         return false;
  52 }
  53                                                                         /*}}}*/
  54 // PackageFromTask - Return all packages in the cache from a specific task /*{{{*/
  55 bool CacheSetHelper::PackageFromTask(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
  56         size_t const archfound = pattern.find_last_of(':');
  57         std::string arch = "native";
  58         if (archfound != std::string::npos) {
  59                 arch = pattern.substr(archfound+1);
  60                 pattern.erase(archfound);
  61         }
  62
  63         if (pattern[pattern.length() -1] != '^')
  64                 return false;
  65         pattern.erase(pattern.length()-1);
  66
  67         if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
  68                 return false;
  69
  70         bool const wasEmpty = pci->empty();
  71         if (wasEmpty == true)
  72                 pci->setConstructor(CacheSetHelper::TASK);
  73
  74         // get the records
  75         pkgRecords Recs(Cache);
  76
  77         // build regexp for the task
  78         regex_t Pattern;
  79         char S[300];
  80         snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
  81         if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
  82                 _error->Error("Failed to compile task regexp");
  83                 return false;
  84         }
  85
  86         bool found = false;
  87         for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
  88                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
  89                 if (Pkg.end() == true)
  90                         continue;
  91                 pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
  92                 if(ver.end() == true)
  93                         continue;
  94
  95                 pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
  96                 const char *start, *end;
  97                 parser.GetRec(start,end);
  98                 unsigned int const length = end - start;
  99                 if (unlikely(length == 0))
 100                    continue;
 101                 char buf[length];
 102                 strncpy(buf, start, length);
 103                 buf[length-1] = '\0';
 104                 if (regexec(&Pattern, buf, 0, 0, 0) != 0)
 105                         continue;
 106
 107                 pci->insert(Pkg);
 108                 showPackageSelection(Pkg, CacheSetHelper::TASK, pattern);
 109                 found = true;
 110         }
 111         regfree(&Pattern);
 112
 113         if (found == false) {
 114                 canNotFindPackage(CacheSetHelper::TASK, pci, Cache, pattern);
 115                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 116                 return false;
 117         }
 118
 119         if (wasEmpty == false && pci->getConstructor() != CacheSetHelper::UNKNOWN)
 120                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 121
 122         return true;
 123 }
 124                                                                         /*}}}*/
 125 // PackageFromRegEx - Return all packages in the cache matching a pattern /*{{{*/
 126 bool CacheSetHelper::PackageFromRegEx(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string pattern) {
 127         static const char * const isregex = ".?+*|[^$";
 128         if (pattern.find_first_of(isregex) == std::string::npos)
 129                 return false;
 130
 131         bool const wasEmpty = pci->empty();
 132         if (wasEmpty == true)
 133                 pci->setConstructor(CacheSetHelper::REGEX);
 134
 135         size_t archfound = pattern.find_last_of(':');
 136         std::string arch = "native";
 137         if (archfound != std::string::npos) {
 138                 arch = pattern.substr(archfound+1);
 139                 if (arch.find_first_of(isregex) == std::string::npos)
 140                         pattern.erase(archfound);
 141                 else
 142                         arch = "native";
 143         }
 144
 145         if (unlikely(Cache.GetPkgCache() == 0))
 146                 return false;
 147
 148         APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
 149
 150         bool found = false;
 151         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 152                 if (regexfilter(Grp) == false)
 153                         continue;
 154                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 155                 if (Pkg.end() == true) {
 156                         if (archfound == std::string::npos)
 157                                 Pkg = Grp.FindPreferredPkg(true);
 158                         if (Pkg.end() == true)
 159                                 continue;
 160                 }
 161
 162                 pci->insert(Pkg);
 163                 showPackageSelection(Pkg, CacheSetHelper::REGEX, pattern);
 164                 found = true;
 165         }
 166
 167         if (found == false) {
 168                 canNotFindPackage(CacheSetHelper::REGEX, pci, Cache, pattern);
 169                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 170                 return false;
 171         }
 172
 173         if (wasEmpty == false && pci->getConstructor() != CacheSetHelper::UNKNOWN)
 174                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 175
 176         return true;
 177 }
 178                                                                         /*}}}*/
 179 // PackageFromFnmatch - Returns the package defined  by this fnmatch    /*{{{*/
 180 bool CacheSetHelper::PackageFromFnmatch(PackageContainerInterface * const pci,
 181                                        pkgCacheFile &Cache, std::string pattern)
 182 {
 183         static const char * const isfnmatch = ".?*[]!";
 184         if (pattern.find_first_of(isfnmatch) == std::string::npos)
 185                 return false;
 186
 187         bool const wasEmpty = pci->empty();
 188         if (wasEmpty == true)
 189                 pci->setConstructor(CacheSetHelper::FNMATCH);
 190
 191         size_t archfound = pattern.find_last_of(':');
 192         std::string arch = "native";
 193         if (archfound != std::string::npos) {
 194                 arch = pattern.substr(archfound+1);
 195                 if (arch.find_first_of(isfnmatch) == std::string::npos)
 196                         pattern.erase(archfound);
 197                 else
 198                         arch = "native";
 199         }
 200
 201         if (unlikely(Cache.GetPkgCache() == 0))
 202                 return false;
 203
 204         APT::CacheFilter::PackageNameMatchesFnmatch filter(pattern);
 205
 206         bool found = false;
 207         for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
 208                 if (filter(Grp) == false)
 209                         continue;
 210                 pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
 211                 if (Pkg.end() == true) {
 212                         if (archfound == std::string::npos)
 213                                 Pkg = Grp.FindPreferredPkg(true);
 214                         if (Pkg.end() == true)
 215                                 continue;
 216                 }
 217
 218                 pci->insert(Pkg);
 219                 showPackageSelection(Pkg, CacheSetHelper::FNMATCH, pattern);
 220                 found = true;
 221         }
 222
 223         if (found == false) {
 224                 canNotFindPackage(CacheSetHelper::FNMATCH, pci, Cache, pattern);
 225                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 226                 return false;
 227         }
 228
 229         if (wasEmpty == false && pci->getConstructor() != CacheSetHelper::UNKNOWN)
 230                 pci->setConstructor(CacheSetHelper::UNKNOWN);
 231
 232         return true;
 233 }
 234                                                                         /*}}}*/
 235 // PackageFromName - Returns the package defined  by this string        /*{{{*/
 236 pkgCache::PkgIterator CacheSetHelper::PackageFromName(pkgCacheFile &Cache,
 237                         std::string const &str) {
 238         std::string pkg = str;
 239         size_t archfound = pkg.find_last_of(':');
 240         std::string arch;
 241         if (archfound != std::string::npos) {
 242                 arch = pkg.substr(archfound+1);
 243                 pkg.erase(archfound);
 244         }
 245
 246         if (Cache.GetPkgCache() == 0)
 247                 return pkgCache::PkgIterator(Cache, 0);
 248
 249         pkgCache::PkgIterator Pkg(Cache, 0);
 250         if (arch.empty() == true) {
 251                 pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 252                 if (Grp.end() == false)
 253                         Pkg = Grp.FindPreferredPkg();
 254         } else
 255                 Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
 256
 257         if (Pkg.end() == true)
 258                 return canNotFindPkgName(Cache, str);
 259         return Pkg;
 260 }
 261                                                                         /*}}}*/
 262 // PackageFromPackageName - Returns the package defined  by this string /*{{{*/
 263 bool CacheSetHelper::PackageFromPackageName(PackageContainerInterface * const pci, pkgCacheFile &Cache,
 264                         std::string pkg) {
 265         if (unlikely(Cache.GetPkgCache() == 0))
 266                 return false;
 267
 268         std::string const pkgstring = pkg;
 269         size_t const archfound = pkg.find_last_of(':');
 270         std::string arch;
 271         if (archfound != std::string::npos) {
 272                 arch = pkg.substr(archfound+1);
 273                 pkg.erase(archfound);
 274                 if (arch == "all" || arch == "native")
 275                         arch = _config->Find("APT::Architecture");
 276         }
 277
 278         pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
 279         if (Grp.end() == false) {
 280                 if (arch.empty() == true) {
 281                         pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
 282                         if (Pkg.end() == false)
 283                         {
 284                            pci->insert(Pkg);
 285                            return true;
 286                         }
 287                 } else {
 288                         bool found = false;
 289                         // for 'linux-any' return the first package matching, for 'linux-*' return all matches
 290                         bool const isGlobal = arch.find('*') != std::string::npos;
 291                         APT::CacheFilter::PackageArchitectureMatchesSpecification pams(arch);
 292                         for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) {
 293                                 if (pams(Pkg) == false)
 294                                         continue;
 295                                 pci->insert(Pkg);
 296                                 found = true;
 297                                 if (isGlobal == false)
 298                                         break;
 299                         }
 300                         if (found == true)
 301                                 return true;
 302                 }
 303         }
 304
 305         pkgCache::PkgIterator Pkg = canNotFindPkgName(Cache, pkgstring);
 306         if (Pkg.end() == true)
 307            return false;
 308
 309         pci->insert(Pkg);
 310         return true;
 311 }
 312                                                                         /*}}}*/
 313 // PackageFromString - Return all packages matching a specific string   /*{{{*/
 314 bool CacheSetHelper::PackageFromString(PackageContainerInterface * const pci, pkgCacheFile &Cache, std::string const &str) {
 315         bool found = true;
 316         _error->PushToStack();
 317
 318         if (PackageFrom(CacheSetHelper::PACKAGENAME, pci, Cache, str) == false &&
 319                  PackageFrom(CacheSetHelper::TASK, pci, Cache, str) == false &&
 320                  // FIXME: hm, hm, regexp/fnmatch incompatible?
 321                  PackageFrom(CacheSetHelper::FNMATCH, pci, Cache, str) == false &&
 322                  PackageFrom(CacheSetHelper::REGEX, pci, Cache, str) == false)
 323         {
 324                 canNotFindPackage(CacheSetHelper::PACKAGENAME, pci, Cache, str);
 325                 found = false;
 326         }
 327
 328         if (found == true)
 329                 _error->RevertToStack();
 330         else
 331                 _error->MergeWithStack();
 332         return found;
 333 }
 334                                                                         /*}}}*/
 335 // PackageFromCommandLine - Return all packages specified on commandline /*{{{*/
 336 bool CacheSetHelper::PackageFromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline) {
 337         bool found = false;
 338         for (const char **I = cmdline; *I != 0; ++I)
 339                 found |= PackageFrom(CacheSetHelper::STRING, pci, Cache, *I);
 340         return found;
 341 }
 342                                                                         /*}}}*/
 343 // FromModifierCommandLine - helper doing the work for PKG:GroupedFromCommandLine       /*{{{*/
 344 bool CacheSetHelper::PackageFromModifierCommandLine(unsigned short &modID, PackageContainerInterface * const pci,
 345                                                         pkgCacheFile &Cache, const char * cmdline,
 346                                                         std::list<PkgModifier> const &mods) {
 347         std::string str = cmdline;
 348         unsigned short fallback = modID;
 349         bool modifierPresent = false;
 350         for (std::list<PkgModifier>::const_iterator mod = mods.begin();
 351              mod != mods.end(); ++mod) {
 352                 size_t const alength = strlen(mod->Alias);
 353                 switch(mod->Pos) {
 354                 case PkgModifier::POSTFIX:
 355                         if (str.compare(str.length() - alength, alength,
 356                                         mod->Alias, 0, alength) != 0)
 357                                 continue;
 358                         str.erase(str.length() - alength);
 359                         modID = mod->ID;
 360                         break;
 361                 case PkgModifier::PREFIX:
 362                         continue;
 363                 case PkgModifier::NONE:
 364                         continue;
 365                 }
 366                 modifierPresent = true;
 367                 break;
 368         }
 369         if (modifierPresent == true) {
 370                 bool const errors = showErrors(false);
 371                 bool const found = PackageFrom(PACKAGENAME, pci, Cache, cmdline);
 372                 showErrors(errors);
 373                 if (found == true) {
 374                         modID = fallback;
 375                         return true;
 376                 }
 377         }
 378         return PackageFrom(CacheSetHelper::PACKAGENAME, pci, Cache, str);
 379 }
 380                                                                         /*}}}*/
 381 // FromModifierCommandLine - helper doing the work for VER:GroupedFromCommandLine       /*{{{*/
 382 bool VersionContainerInterface::FromModifierCommandLine(unsigned short &modID,
 383                                                         VersionContainerInterface * const vci,
 384                                                         pkgCacheFile &Cache, const char * cmdline,
 385                                                         std::list<Modifier> const &mods,
 386                                                         CacheSetHelper &helper) {
 387         CacheSetHelper::VerSelector select = CacheSetHelper::NEWEST;
 388         std::string str = cmdline;
 389         if (unlikely(str.empty() == true))
 390                 return false;
 391         bool modifierPresent = false;
 392         unsigned short fallback = modID;
 393         for (std::list<Modifier>::const_iterator mod = mods.begin();
 394              mod != mods.end(); ++mod) {
 395                 if (modID == fallback && mod->ID == fallback)
 396                         select = mod->SelectVersion;
 397                 size_t const alength = strlen(mod->Alias);
 398                 switch(mod->Pos) {
 399                 case Modifier::POSTFIX:
 400                         if (str.length() <= alength ||
 401                               str.compare(str.length() - alength, alength, mod->Alias, 0, alength) != 0)
 402                                 continue;
 403                         str.erase(str.length() - alength);
 404                         modID = mod->ID;
 405                         select = mod->SelectVersion;
 406                         break;
 407                 case Modifier::PREFIX:
 408                         continue;
 409                 case Modifier::NONE:
 410                         continue;
 411                 }
 412                 modifierPresent = true;
 413                 break;
 414         }
 415         if (modifierPresent == true) {
 416                 bool const errors = helper.showErrors(false);
 417                 bool const found = VersionContainerInterface::FromString(vci, Cache, cmdline, select, helper, true);
 418                 helper.showErrors(errors);
 419                 if (found == true) {
 420                         modID = fallback;
 421                         return true;
 422                 }
 423         }
 424         return FromString(vci, Cache, str, select, helper);
 425 }
 426                                                                         /*}}}*/
 427 // FromCommandLine - Return all versions specified on commandline       /*{{{*/
 428 bool VersionContainerInterface::FromCommandLine(VersionContainerInterface * const vci,
 429                                                 pkgCacheFile &Cache, const char **cmdline,
 430                                                 CacheSetHelper::VerSelector const fallback,
 431                                                 CacheSetHelper &helper) {
 432         bool found = false;
 433         for (const char **I = cmdline; *I != 0; ++I)
 434                 found |= VersionContainerInterface::FromString(vci, Cache, *I, fallback, helper);
 435         return found;
 436 }
 437                                                                         /*}}}*/
 438 // FromString - Returns all versions spedcified by a string             /*{{{*/
 439 bool VersionContainerInterface::FromString(VersionContainerInterface * const vci,
 440                                            pkgCacheFile &Cache, std::string pkg,
 441                                            CacheSetHelper::VerSelector const fallback,
 442                                            CacheSetHelper &helper,
 443                                            bool const onlyFromName) {
 444         std::string ver;
 445         bool verIsRel = false;
 446         size_t const vertag = pkg.find_last_of("/=");
 447         if (vertag != std::string::npos) {
 448                 ver = pkg.substr(vertag+1);
 449                 verIsRel = (pkg[vertag] == '/');
 450                 pkg.erase(vertag);
 451         }
 452
 453         PackageSet pkgset;
 454         if (onlyFromName == false)
 455                 helper.PackageFrom(CacheSetHelper::STRING, &pkgset, Cache, pkg);
 456         else {
 457                 helper.PackageFrom(CacheSetHelper::PACKAGENAME, &pkgset, Cache, pkg);
 458         }
 459
 460         bool errors = true;
 461         if (pkgset.getConstructor() != CacheSetHelper::UNKNOWN)
 462                 errors = helper.showErrors(false);
 463
 464         bool found = false;
 465         for (PackageSet::const_iterator P = pkgset.begin();
 466              P != pkgset.end(); ++P) {
 467                 if (vertag == std::string::npos) {
 468                         found |= VersionContainerInterface::FromPackage(vci, Cache, P, fallback, helper);
 469                         continue;
 470                 }
 471                 pkgCache::VerIterator V;
 472                 if (ver == "installed")
 473                         V = getInstalledVer(Cache, P, helper);
 474                 else if (ver == "candidate")
 475                         V = getCandidateVer(Cache, P, helper);
 476                 else if (ver == "newest") {
 477                         if (P->VersionList != 0)
 478                                 V = P.VersionList();
 479                         else
 480                                 V = helper.canNotGetVersion(CacheSetHelper::NEWEST, Cache, P);
 481                 } else {
 482                         pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
 483                                         pkgVersionMatch::Version));
 484                         V = Match.Find(P);
 485                         if (V.end() == true) {
 486                                 if (verIsRel == true)
 487                                         _error->Error(_("Release '%s' for '%s' was not found"),
 488                                                         ver.c_str(), P.FullName(true).c_str());
 489                                 else
 490                                         _error->Error(_("Version '%s' for '%s' was not found"),
 491                                                         ver.c_str(), P.FullName(true).c_str());
 492                                 continue;
 493                         }
 494                 }
 495                 if (V.end() == true)
 496                         continue;
 497                 if (verIsRel == true)
 498                         helper.showVersionSelection(P, V, CacheSetHelper::RELEASE, ver);
 499                 else
 500                         helper.showVersionSelection(P, V, CacheSetHelper::VERSIONNUMBER, ver);
 501                 vci->insert(V);
 502                 found = true;
 503         }
 504         if (pkgset.getConstructor() != CacheSetHelper::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                                             CacheSetHelper::VerSelector const fallback,
 514                                             CacheSetHelper &helper) {
 515         pkgCache::VerIterator V;
 516         bool showErrors;
 517         bool found = false;
 518         switch(fallback) {
 519         case CacheSetHelper::ALL:
 520                 if (P->VersionList != 0)
 521                         for (V = P.VersionList(); V.end() != true; ++V)
 522                                 found |= vci->insert(V);
 523                 else
 524                         helper.canNotFindVersion(CacheSetHelper::ALL, vci, Cache, P);
 525                 break;
 526         case CacheSetHelper::CANDANDINST:
 527                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 528                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 529                 break;
 530         case CacheSetHelper::CANDIDATE:
 531                 found |= vci->insert(getCandidateVer(Cache, P, helper));
 532                 break;
 533         case CacheSetHelper::INSTALLED:
 534                 found |= vci->insert(getInstalledVer(Cache, P, helper));
 535                 break;
 536         case CacheSetHelper::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.canNotFindVersion(CacheSetHelper::CANDINST, vci, Cache, P);
 546                 break;
 547         case CacheSetHelper::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.canNotFindVersion(CacheSetHelper::INSTCAND, vci, Cache, P);
 557                 break;
 558         case CacheSetHelper::NEWEST:
 559                 if (P->VersionList != 0)
 560                         found |= vci->insert(P.VersionList());
 561                 else
 562                         helper.canNotFindVersion(CacheSetHelper::NEWEST, vci, Cache, P);
 563                 break;
 564         case CacheSetHelper::RELEASE:
 565         case CacheSetHelper::VERSIONNUMBER:
 566                 // both make no sense here, so always false
 567                 return false;
 568         }
 569         return found;
 570 }
 571                                                                         /*}}}*/
 572 // FromDependency - versions satisfying a given dependency              /*{{{*/
 573 bool VersionContainerInterface::FromDependency(VersionContainerInterface * const vci,
 574                                                pkgCacheFile &Cache,
 575                                                pkgCache::DepIterator const &D,
 576                                                CacheSetHelper::VerSelector const selector,
 577                                                CacheSetHelper &helper)
 578 {
 579         bool found = false;
 580         switch(selector) {
 581         case CacheSetHelper::ALL:
 582         {
 583                 pkgCache::PkgIterator const T = D.TargetPkg();
 584                 for (pkgCache::VerIterator Ver = T.VersionList(); Ver.end() == false; ++Ver)
 585                 {
 586                    if (D.IsSatisfied(Ver) == true)
 587                    {
 588                       vci->insert(Ver);
 589                       found = true;
 590                    }
 591                    for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
 592                    {
 593                       pkgCache::VerIterator const V = Prv.OwnerVer();
 594                       if (unlikely(V.end() == true) || D.IsSatisfied(Prv) == false)
 595                          continue;
 596                       vci->insert(V);
 597                       found = true;
 598                    }
 599                 }
 600                 return found;
 601         }
 602         case CacheSetHelper::CANDANDINST:
 603         {
 604                 found = FromDependency(vci, Cache, D, CacheSetHelper::CANDIDATE, helper);
 605                 found &= FromDependency(vci, Cache, D, CacheSetHelper::INSTALLED, helper);
 606                 return found;
 607         }
 608         case CacheSetHelper::CANDIDATE:
 609         {
 610                 pkgCache::PkgIterator const T = D.TargetPkg();
 611                 pkgCache::VerIterator const Cand = Cache[T].CandidateVerIter(Cache);
 612                 if (Cand.end() == false && D.IsSatisfied(Cand) == true)
 613                 {
 614                    vci->insert(Cand);
 615                    found = true;
 616                 }
 617                 for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
 618                 {
 619                    pkgCache::VerIterator const V = Prv.OwnerVer();
 620                    pkgCache::VerIterator const Cand = Cache[Prv.OwnerPkg()].CandidateVerIter(Cache);
 621                    if (Cand.end() == true || V != Cand || D.IsSatisfied(Prv) == false)
 622                       continue;
 623                    vci->insert(Cand);
 624                    found = true;
 625                 }
 626                 return found;
 627         }
 628         case CacheSetHelper::INSTALLED:
 629         {
 630                 pkgCache::PkgIterator const T = D.TargetPkg();
 631                 pkgCache::VerIterator const Cand = T.CurrentVer();
 632                 if (Cand.end() == false && D.IsSatisfied(Cand) == true)
 633                 {
 634                    vci->insert(Cand);
 635                    found = true;
 636                 }
 637                 for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
 638                 {
 639                    pkgCache::VerIterator const V = Prv.OwnerVer();
 640                    pkgCache::VerIterator const Cand = Prv.OwnerPkg().CurrentVer();
 641                    if (Cand.end() == true || V != Cand || D.IsSatisfied(Prv) == false)
 642                       continue;
 643                    vci->insert(Cand);
 644                    found = true;
 645                 }
 646                 return found;
 647         }
 648         case CacheSetHelper::CANDINST:
 649                 return FromDependency(vci, Cache, D, CacheSetHelper::CANDIDATE, helper) ||
 650                    FromDependency(vci, Cache, D, CacheSetHelper::INSTALLED, helper);
 651         case CacheSetHelper::INSTCAND:
 652                 return FromDependency(vci, Cache, D, CacheSetHelper::INSTALLED, helper) ||
 653                    FromDependency(vci, Cache, D, CacheSetHelper::CANDIDATE, helper);
 654         case CacheSetHelper::NEWEST:
 655         {
 656                 pkgCache::PkgIterator const T = D.TargetPkg();
 657                 pkgCache::VerIterator const Cand = T.VersionList();
 658                 if (Cand.end() == false && D.IsSatisfied(Cand) == true)
 659                 {
 660                    vci->insert(Cand);
 661                    found = true;
 662                 }
 663                 for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
 664                 {
 665                    pkgCache::VerIterator const V = Prv.OwnerVer();
 666                    pkgCache::VerIterator const Cand = Prv.OwnerPkg().VersionList();
 667                    if (Cand.end() == true || V != Cand || D.IsSatisfied(Prv) == false)
 668                       continue;
 669                    vci->insert(Cand);
 670                    found = true;
 671                 }
 672                 return found;
 673         }
 674         case CacheSetHelper::RELEASE:
 675         case CacheSetHelper::VERSIONNUMBER:
 676                 // both make no sense here, so always false
 677                 return false;
 678         }
 679         return found;
 680 }
 681                                                                         /*}}}*/
 682 // getCandidateVer - Returns the candidate version of the given package /*{{{*/
 683 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
 684                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 685         pkgCache::VerIterator Cand;
 686         if (Cache.IsDepCacheBuilt() == true) {
 687                 Cand = Cache[Pkg].CandidateVerIter(Cache);
 688         } else if (unlikely(Cache.GetPolicy() == nullptr)) {
 689                 return pkgCache::VerIterator(Cache);
 690         } else {
 691                 Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
 692         }
 693         if (Cand.end() == true)
 694                 return helper.canNotGetVersion(CacheSetHelper::CANDIDATE, Cache, Pkg);
 695         return Cand;
 696 }
 697                                                                         /*}}}*/
 698 // getInstalledVer - Returns the installed version of the given package /*{{{*/
 699 pkgCache::VerIterator VersionContainerInterface::getInstalledVer(pkgCacheFile &Cache,
 700                 pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
 701         if (Pkg->CurrentVer == 0)
 702                 return helper.canNotGetVersion(CacheSetHelper::INSTALLED, Cache, Pkg);
 703         return Pkg.CurrentVer();
 704 }
 705                                                                         /*}}}*/
 706
 707 // canNotFindPackage - with the given selector and pattern              /*{{{*/
 708 void CacheSetHelper::canNotFindPackage(enum PkgSelector const select,
 709       PackageContainerInterface * const pci, pkgCacheFile &Cache,
 710       std::string const &pattern) {
 711         switch (select) {
 712 APT_IGNORE_DEPRECATED_PUSH
 713         case REGEX: canNotFindRegEx(pci, Cache, pattern); break;
 714         case TASK: canNotFindTask(pci, Cache, pattern); break;
 715         case FNMATCH: canNotFindFnmatch(pci, Cache, pattern); break;
 716         case PACKAGENAME: canNotFindPackage(pci, Cache, pattern); break;
 717         case STRING: canNotFindPackage(pci, Cache, pattern); break;
 718         case UNKNOWN: break;
 719 APT_IGNORE_DEPRECATED_POP
 720         }
 721 }
 722 // canNotFindTask - handle the case no package is found for a task      /*{{{*/
 723 void CacheSetHelper::canNotFindTask(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 724         if (ShowError == true)
 725                 _error->Insert(ErrorType, _("Couldn't find task '%s'"), pattern.c_str());
 726 }
 727                                                                         /*}}}*/
 728 // canNotFindRegEx - handle the case no package is found by a regex     /*{{{*/
 729 void CacheSetHelper::canNotFindRegEx(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 730         if (ShowError == true)
 731                 _error->Insert(ErrorType, _("Couldn't find any package by regex '%s'"), pattern.c_str());
 732 }
 733                                                                         /*}}}*/
 734 // canNotFindFnmatch - handle the case no package is found by a fnmatch /*{{{*/
 735    void CacheSetHelper::canNotFindFnmatch(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string pattern) {
 736         if (ShowError == true)
 737                 _error->Insert(ErrorType, _("Couldn't find any package by glob '%s'"), pattern.c_str());
 738 }
 739                                                                         /*}}}*/
 740 // canNotFindPackage - handle the case no package is found from a string/*{{{*/
 741 APT_CONST void CacheSetHelper::canNotFindPackage(PackageContainerInterface * const /*pci*/, pkgCacheFile &/*Cache*/, std::string const &/*str*/) {
 742 }
 743                                                                         /*}}}*/
 744                                                                         /*}}}*/
 745 // canNotFindPkgName - handle the case no package has this name         /*{{{*/
 746 pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
 747                         std::string const &str) {
 748         if (ShowError == true)
 749                 _error->Insert(ErrorType, _("Unable to locate package %s"), str.c_str());
 750         return pkgCache::PkgIterator(Cache, 0);
 751 }
 752                                                                         /*}}}*/
 753 // canNotFindVersion - for package by selector                          /*{{{*/
 754 void CacheSetHelper::canNotFindVersion(enum VerSelector const select, VersionContainerInterface * const vci, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg)
 755 {
 756         switch (select) {
 757 APT_IGNORE_DEPRECATED_PUSH
 758         case ALL: canNotFindAllVer(vci, Cache, Pkg); break;
 759         case INSTCAND: canNotFindInstCandVer(vci, Cache, Pkg); break;
 760         case CANDINST: canNotFindCandInstVer(vci, Cache, Pkg); break;
 761         case NEWEST: canNotFindNewestVer(Cache, Pkg); break;
 762         case CANDIDATE: canNotFindCandidateVer(Cache, Pkg); break;
 763         case INSTALLED: canNotFindInstalledVer(Cache, Pkg); break;
 764 APT_IGNORE_DEPRECATED_POP
 765         case CANDANDINST: canNotGetCandInstVer(Cache, Pkg); break;
 766         case RELEASE:
 767         case VERSIONNUMBER:
 768                 // invalid in this branch
 769                 break;
 770         }
 771 }
 772 // canNotFindAllVer                                                     /*{{{*/
 773 void CacheSetHelper::canNotFindAllVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &/*Cache*/,
 774                 pkgCache::PkgIterator const &Pkg) {
 775         if (ShowError == true)
 776                 _error->Insert(ErrorType, _("Can't select versions from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 777 }
 778                                                                         /*}}}*/
 779 // canNotFindInstCandVer                                                /*{{{*/
 780 void CacheSetHelper::canNotFindInstCandVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &Cache,
 781                 pkgCache::PkgIterator const &Pkg) {
 782         canNotGetInstCandVer(Cache, Pkg);
 783 }
 784                                                                         /*}}}*/
 785 // canNotFindInstCandVer                                                /*{{{*/
 786 void CacheSetHelper::canNotFindCandInstVer(VersionContainerInterface * const /*vci*/, pkgCacheFile &Cache,
 787                 pkgCache::PkgIterator const &Pkg) {
 788         canNotGetCandInstVer(Cache, Pkg);
 789 }
 790                                                                         /*}}}*/
 791                                                                         /*}}}*/
 792 // canNotGetVersion - for package by selector                           /*{{{*/
 793 pkgCache::VerIterator CacheSetHelper::canNotGetVersion(enum VerSelector const select, pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
 794         switch (select) {
 795 APT_IGNORE_DEPRECATED_PUSH
 796         case NEWEST: return canNotFindNewestVer(Cache, Pkg);
 797         case CANDIDATE: return canNotFindCandidateVer(Cache, Pkg);
 798         case INSTALLED: return canNotFindInstalledVer(Cache, Pkg);
 799 APT_IGNORE_DEPRECATED_POP
 800         case CANDINST: return canNotGetCandInstVer(Cache, Pkg);
 801         case INSTCAND: return canNotGetInstCandVer(Cache, Pkg);
 802         case ALL:
 803         case CANDANDINST:
 804         case RELEASE:
 805         case VERSIONNUMBER:
 806                 // invalid in this branch
 807                 return pkgCache::VerIterator(Cache, 0);
 808         }
 809         return pkgCache::VerIterator(Cache, 0);
 810 }
 811 // canNotFindNewestVer                                                  /*{{{*/
 812 pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
 813                 pkgCache::PkgIterator const &Pkg) {
 814         if (ShowError == true)
 815                 _error->Insert(ErrorType, _("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
 816         return pkgCache::VerIterator(Cache, 0);
 817 }
 818                                                                         /*}}}*/
 819 // canNotFindCandidateVer                                               /*{{{*/
 820 pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
 821                 pkgCache::PkgIterator const &Pkg) {
 822         if (ShowError == true)
 823                 _error->Insert(ErrorType, _("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
 824         return pkgCache::VerIterator(Cache, 0);
 825 }
 826                                                                         /*}}}*/
 827 // canNotFindInstalledVer                                               /*{{{*/
 828 pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
 829                 pkgCache::PkgIterator const &Pkg) {
 830         if (ShowError == true)
 831                 _error->Insert(ErrorType, _("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
 832         return pkgCache::VerIterator(Cache, 0);
 833 }
 834                                                                         /*}}}*/
 835 // canNotFindInstCandVer                                                /*{{{*/
 836 pkgCache::VerIterator CacheSetHelper::canNotGetInstCandVer(pkgCacheFile &Cache,
 837                 pkgCache::PkgIterator const &Pkg) {
 838         if (ShowError == true)
 839                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 840         return pkgCache::VerIterator(Cache, 0);
 841 }
 842                                                                         /*}}}*/
 843 // canNotFindInstCandVer                                                /*{{{*/
 844 pkgCache::VerIterator CacheSetHelper::canNotGetCandInstVer(pkgCacheFile &Cache,
 845                 pkgCache::PkgIterator const &Pkg) {
 846         if (ShowError == true)
 847                 _error->Insert(ErrorType, _("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
 848         return pkgCache::VerIterator(Cache, 0);
 849 }
 850                                                                         /*}}}*/
 851                                                                         /*}}}*/
 852 // showPackageSelection - by selector and given pattern                 /*{{{*/
 853 void CacheSetHelper::showPackageSelection(pkgCache::PkgIterator const &pkg, enum PkgSelector const select,
 854                                        std::string const &pattern) {
 855         switch (select) {
 856 APT_IGNORE_DEPRECATED_PUSH
 857         case REGEX: showRegExSelection(pkg, pattern); break;
 858         case TASK: showTaskSelection(pkg, pattern); break;
 859         case FNMATCH: showFnmatchSelection(pkg, pattern); break;
 860 APT_IGNORE_DEPRECATED_POP
 861         case PACKAGENAME: /* no suprises here */ break;
 862         case STRING: /* handled by the special cases */ break;
 863         case UNKNOWN: break;
 864         }
 865 }
 866 // showTaskSelection                                                    /*{{{*/
 867 APT_CONST void CacheSetHelper::showTaskSelection(pkgCache::PkgIterator const &/*pkg*/,
 868                                        std::string const &/*pattern*/) {
 869 }
 870                                                                         /*}}}*/
 871 // showRegExSelection                                                   /*{{{*/
 872 APT_CONST void CacheSetHelper::showRegExSelection(pkgCache::PkgIterator const &/*pkg*/,
 873                                         std::string const &/*pattern*/) {
 874 }
 875                                                                         /*}}}*/
 876 // showFnmatchSelection                                                 /*{{{*/
 877 APT_CONST void CacheSetHelper::showFnmatchSelection(pkgCache::PkgIterator const &/*pkg*/,
 878                                          std::string const &/*pattern*/) {
 879 }
 880                                                                         /*}}}*/
 881                                                                         /*}}}*/
 882 // showVersionSelection                                                 /*{{{*/
 883 void CacheSetHelper::showVersionSelection(pkgCache::PkgIterator const &Pkg,
 884       pkgCache::VerIterator const &Ver, enum VerSelector const select, std::string const &pattern) {
 885         switch (select) {
 886 APT_IGNORE_DEPRECATED_PUSH
 887         case RELEASE:
 888                 showSelectedVersion(Pkg, Ver, pattern, true);
 889                 break;
 890         case VERSIONNUMBER:
 891                 showSelectedVersion(Pkg, Ver, pattern, false);
 892                 break;
 893 APT_IGNORE_DEPRECATED_POP
 894         case NEWEST:
 895         case CANDIDATE:
 896         case INSTALLED:
 897         case CANDINST:
 898         case INSTCAND:
 899         case ALL:
 900         case CANDANDINST:
 901                 // not really suprises, but in fact: just not implemented
 902                 break;
 903         }
 904 }
 905 APT_CONST void CacheSetHelper::showSelectedVersion(pkgCache::PkgIterator const &/*Pkg*/,
 906                                          pkgCache::VerIterator const /*Ver*/,
 907                                          std::string const &/*ver*/,
 908                                          bool const /*verIsRel*/) {
 909 }
 910                                                                         /*}}}*/
 911
 912 CacheSetHelper::CacheSetHelper(bool const ShowError, GlobalError::MsgType ErrorType) :
 913    ShowError(ShowError), ErrorType(ErrorType), d(NULL) {}
 914 CacheSetHelper::~CacheSetHelper() {}
 915
 916 PackageContainerInterface::PackageContainerInterface() : ConstructedBy(CacheSetHelper::UNKNOWN), d(NULL) {}
 917 PackageContainerInterface::PackageContainerInterface(CacheSetHelper::PkgSelector const by) : ConstructedBy(by), d(NULL) {}
 918 PackageContainerInterface& PackageContainerInterface::operator=(PackageContainerInterface const &other) {
 919    if (this != &other)
 920       this->ConstructedBy = other.ConstructedBy;
 921    return *this;
 922 }
 923 PackageContainerInterface::~PackageContainerInterface() {}
 924
 925 PackageUniverse::PackageUniverse(pkgCache * const Owner) : _cont(Owner), d(NULL) {}
 926 PackageUniverse::PackageUniverse(pkgCacheFile * const Owner) : _cont(Owner->GetPkgCache()), d(NULL) {}
 927 PackageUniverse::~PackageUniverse() {}
 928
 929 VersionContainerInterface::VersionContainerInterface() : d(NULL) {}
 930 VersionContainerInterface& VersionContainerInterface::operator=(VersionContainerInterface const &) {
 931    return *this;
 932 }
 933
 934 VersionContainerInterface::~VersionContainerInterface() {}
 935 }