cmdline/apt-cache.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: apt-cache.cc,v 1.72 2004/04/30 04:34:03 mdz Exp $
   4 /* ######################################################################
   5
   6    apt-cache - Manages the cache files
   7
   8    apt-cache provides some functions fo manipulating the cache files.
   9    It uses the command line interface common to all the APT tools.
  10
  11    Returns 100 on failure, 0 on success.
  12
  13    ##################################################################### */
  14                                                                         /*}}}*/
  15 // Include Files                                                        /*{{{*/
  16 #include <apt-pkg/error.h>
  17 #include <cassert>
  18 #include <apt-pkg/pkgcachegen.h>
  19 #include <apt-pkg/cachefile.h>
  20 #include <apt-pkg/init.h>
  21 #include <apt-pkg/progress.h>
  22 #include <apt-pkg/sourcelist.h>
  23 #include <apt-pkg/cmndline.h>
  24 #include <apt-pkg/strutl.h>
  25 #include <apt-pkg/pkgrecords.h>
  26 #include <apt-pkg/srcrecords.h>
  27 #include <apt-pkg/version.h>
  28 #include <apt-pkg/policy.h>
  29 #include <apt-pkg/tagfile.h>
  30 #include <apt-pkg/algorithms.h>
  31 #include <apt-pkg/sptr.h>
  32
  33 #include "cacheset.h"
  34
  35 #include <config.h>
  36 #include <apti18n.h>
  37
  38 #include <locale.h>
  39 #include <iostream>
  40 #include <unistd.h>
  41 #include <errno.h>
  42 #include <regex.h>
  43 #include <stdio.h>
  44
  45 #include <iomanip>
  46                                                                         /*}}}*/
  47
  48 using namespace std;
  49
  50 // LocalitySort - Sort a version list by package file locality          /*{{{*/
  51 // ---------------------------------------------------------------------
  52 /* */
  53 int LocalityCompare(const void *a, const void *b)
  54 {
  55    pkgCache::VerFile *A = *(pkgCache::VerFile **)a;
  56    pkgCache::VerFile *B = *(pkgCache::VerFile **)b;
  57
  58    if (A == 0 && B == 0)
  59       return 0;
  60    if (A == 0)
  61       return 1;
  62    if (B == 0)
  63       return -1;
  64
  65    if (A->File == B->File)
  66       return A->Offset - B->Offset;
  67    return A->File - B->File;
  68 }
  69
  70 void LocalitySort(pkgCache::VerFile **begin,
  71                   unsigned long Count,size_t Size)
  72 {
  73    qsort(begin,Count,Size,LocalityCompare);
  74 }
  75
  76 void LocalitySort(pkgCache::DescFile **begin,
  77                   unsigned long Count,size_t Size)
  78 {
  79    qsort(begin,Count,Size,LocalityCompare);
  80 }
  81                                                                         /*}}}*/
  82 // UnMet - Show unmet dependencies                                      /*{{{*/
  83 // ---------------------------------------------------------------------
  84 /* */
  85 bool ShowUnMet(pkgCache::VerIterator const &V, bool const &Important)
  86 {
  87          bool Header = false;
  88          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false;)
  89          {
  90             // Collect or groups
  91             pkgCache::DepIterator Start;
  92             pkgCache::DepIterator End;
  93             D.GlobOr(Start,End);
  94
  95             // Important deps only
  96             if (Important == true)
  97                if (End->Type != pkgCache::Dep::PreDepends &&
  98                    End->Type != pkgCache::Dep::Depends)
  99                   continue;
 100
 101             // Skip conflicts and replaces
 102             if (End->Type == pkgCache::Dep::DpkgBreaks ||
 103                 End->Type == pkgCache::Dep::Replaces ||
 104                 End->Type == pkgCache::Dep::Conflicts)
 105                continue;
 106
 107             // Verify the or group
 108             bool OK = false;
 109             pkgCache::DepIterator RealStart = Start;
 110             do
 111             {
 112                // See if this dep is Ok
 113                pkgCache::Version **VList = Start.AllTargets();
 114                if (*VList != 0)
 115                {
 116                   OK = true;
 117                   delete [] VList;
 118                   break;
 119                }
 120                delete [] VList;
 121
 122                if (Start == End)
 123                   break;
 124                Start++;
 125             }
 126             while (1);
 127
 128             // The group is OK
 129             if (OK == true)
 130                continue;
 131
 132             // Oops, it failed..
 133             if (Header == false)
 134                ioprintf(cout,_("Package %s version %s has an unmet dep:\n"),
 135                         V.ParentPkg().FullName(true).c_str(),V.VerStr());
 136             Header = true;
 137
 138             // Print out the dep type
 139             cout << " " << End.DepType() << ": ";
 140
 141             // Show the group
 142             Start = RealStart;
 143             do
 144             {
 145                cout << Start.TargetPkg().FullName(true);
 146                if (Start.TargetVer() != 0)
 147                   cout << " (" << Start.CompType() << " " << Start.TargetVer() <<
 148                   ")";
 149                if (Start == End)
 150                   break;
 151                cout << " | ";
 152                Start++;
 153             }
 154             while (1);
 155
 156             cout << endl;
 157          }
 158    return true;
 159 }
 160 bool UnMet(CommandLine &CmdL)
 161 {
 162    bool const Important = _config->FindB("APT::Cache::Important",false);
 163
 164    pkgCacheFile CacheFile;
 165    if (unlikely(CacheFile.GetPkgCache() == NULL))
 166       return false;
 167
 168    if (CmdL.FileSize() <= 1)
 169    {
 170       for (pkgCache::PkgIterator P = CacheFile.GetPkgCache()->PkgBegin(); P.end() == false; P++)
 171          for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
 172             if (ShowUnMet(V, Important) == false)
 173                return false;
 174    }
 175    else
 176    {
 177       APT::VersionSet verset = APT::VersionSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
 178       for (APT::VersionSet::iterator V = verset.begin(); V != verset.end(); ++V)
 179          if (ShowUnMet(V, Important) == false)
 180             return false;
 181    }
 182    return true;
 183 }
 184                                                                         /*}}}*/
 185 // DumpPackage - Show a dump of a package record                        /*{{{*/
 186 // ---------------------------------------------------------------------
 187 /* */
 188 bool DumpPackage(CommandLine &CmdL)
 189 {
 190    pkgCacheFile CacheFile;
 191    APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
 192
 193    for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 194    {
 195       cout << "Package: " << Pkg.FullName(true) << endl;
 196       cout << "Versions: " << endl;
 197       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 198       {
 199          cout << Cur.VerStr();
 200          for (pkgCache::VerFileIterator Vf = Cur.FileList(); Vf.end() == false; Vf++)
 201             cout << " (" << Vf.File().FileName() << ")";
 202          cout << endl;
 203          for (pkgCache::DescIterator D = Cur.DescriptionList(); D.end() == false; D++)
 204          {
 205             cout << " Description Language: " << D.LanguageCode() << endl
 206                  << "                 File: " << D.FileList().File().FileName() << endl
 207                  << "                  MD5: " << D.md5() << endl;
 208          }
 209          cout << endl;
 210       }
 211
 212       cout << endl;
 213
 214       cout << "Reverse Depends: " << endl;
 215       for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() != true; D++)
 216       {
 217          cout << "  " << D.ParentPkg().FullName(true) << ',' << D.TargetPkg().FullName(true);
 218          if (D->Version != 0)
 219             cout << ' ' << DeNull(D.TargetVer()) << endl;
 220          else
 221             cout << endl;
 222       }
 223
 224       cout << "Dependencies: " << endl;
 225       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 226       {
 227          cout << Cur.VerStr() << " - ";
 228          for (pkgCache::DepIterator Dep = Cur.DependsList(); Dep.end() != true; Dep++)
 229             cout << Dep.TargetPkg().FullName(true) << " (" << (int)Dep->CompareOp << " " << DeNull(Dep.TargetVer()) << ") ";
 230          cout << endl;
 231       }
 232
 233       cout << "Provides: " << endl;
 234       for (pkgCache::VerIterator Cur = Pkg.VersionList(); Cur.end() != true; Cur++)
 235       {
 236          cout << Cur.VerStr() << " - ";
 237          for (pkgCache::PrvIterator Prv = Cur.ProvidesList(); Prv.end() != true; Prv++)
 238             cout << Prv.ParentPkg().FullName(true) << " ";
 239          cout << endl;
 240       }
 241       cout << "Reverse Provides: " << endl;
 242       for (pkgCache::PrvIterator Prv = Pkg.ProvidesList(); Prv.end() != true; Prv++)
 243          cout << Prv.OwnerPkg().FullName(true) << " " << Prv.OwnerVer().VerStr() << endl;
 244    }
 245
 246    return true;
 247 }
 248                                                                         /*}}}*/
 249 // Stats - Dump some nice statistics                                    /*{{{*/
 250 // ---------------------------------------------------------------------
 251 /* */
 252 bool Stats(CommandLine &Cmd)
 253 {
 254    pkgCacheFile CacheFile;
 255    pkgCache *Cache = CacheFile.GetPkgCache();
 256    if (unlikely(Cache == NULL))
 257       return false;
 258
 259    cout << _("Total package names: ") << Cache->Head().GroupCount << " (" <<
 260       SizeToStr(Cache->Head().GroupCount*Cache->Head().GroupSz) << ')' << endl
 261         << _("Total package structures: ") << Cache->Head().PackageCount << " (" <<
 262       SizeToStr(Cache->Head().PackageCount*Cache->Head().PackageSz) << ')' << endl;
 263
 264    int Normal = 0;
 265    int Virtual = 0;
 266    int NVirt = 0;
 267    int DVirt = 0;
 268    int Missing = 0;
 269    pkgCache::PkgIterator I = Cache->PkgBegin();
 270    for (;I.end() != true; I++)
 271    {
 272       if (I->VersionList != 0 && I->ProvidesList == 0)
 273       {
 274          Normal++;
 275          continue;
 276       }
 277
 278       if (I->VersionList != 0 && I->ProvidesList != 0)
 279       {
 280          NVirt++;
 281          continue;
 282       }
 283
 284       if (I->VersionList == 0 && I->ProvidesList != 0)
 285       {
 286          // Only 1 provides
 287          if (I.ProvidesList()->NextProvides == 0)
 288          {
 289             DVirt++;
 290          }
 291          else
 292             Virtual++;
 293          continue;
 294       }
 295       if (I->VersionList == 0 && I->ProvidesList == 0)
 296       {
 297          Missing++;
 298          continue;
 299       }
 300    }
 301    cout << _("  Normal packages: ") << Normal << endl;
 302    cout << _("  Pure virtual packages: ") << Virtual << endl;
 303    cout << _("  Single virtual packages: ") << DVirt << endl;
 304    cout << _("  Mixed virtual packages: ") << NVirt << endl;
 305    cout << _("  Missing: ") << Missing << endl;
 306
 307    cout << _("Total distinct versions: ") << Cache->Head().VersionCount << " (" <<
 308       SizeToStr(Cache->Head().VersionCount*Cache->Head().VersionSz) << ')' << endl;
 309    cout << _("Total distinct descriptions: ") << Cache->Head().DescriptionCount << " (" <<
 310       SizeToStr(Cache->Head().DescriptionCount*Cache->Head().DescriptionSz) << ')' << endl;
 311    cout << _("Total dependencies: ") << Cache->Head().DependsCount << " (" <<
 312       SizeToStr(Cache->Head().DependsCount*Cache->Head().DependencySz) << ')' << endl;
 313
 314    cout << _("Total ver/file relations: ") << Cache->Head().VerFileCount << " (" <<
 315       SizeToStr(Cache->Head().VerFileCount*Cache->Head().VerFileSz) << ')' << endl;
 316    cout << _("Total Desc/File relations: ") << Cache->Head().DescFileCount << " (" <<
 317       SizeToStr(Cache->Head().DescFileCount*Cache->Head().DescFileSz) << ')' << endl;
 318    cout << _("Total Provides mappings: ") << Cache->Head().ProvidesCount << " (" <<
 319       SizeToStr(Cache->Head().ProvidesCount*Cache->Head().ProvidesSz) << ')' << endl;
 320
 321    // String list stats
 322    unsigned long Size = 0;
 323    unsigned long Count = 0;
 324    for (pkgCache::StringItem *I = Cache->StringItemP + Cache->Head().StringList;
 325         I!= Cache->StringItemP; I = Cache->StringItemP + I->NextItem)
 326    {
 327       Count++;
 328       Size += strlen(Cache->StrP + I->String) + 1;
 329    }
 330    cout << _("Total globbed strings: ") << Count << " (" << SizeToStr(Size) << ')' << endl;
 331
 332    unsigned long DepVerSize = 0;
 333    for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; P++)
 334    {
 335       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
 336       {
 337          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false; D++)
 338          {
 339             if (D->Version != 0)
 340                DepVerSize += strlen(D.TargetVer()) + 1;
 341          }
 342       }
 343    }
 344    cout << _("Total dependency version space: ") << SizeToStr(DepVerSize) << endl;
 345
 346    unsigned long Slack = 0;
 347    for (int I = 0; I != 7; I++)
 348       Slack += Cache->Head().Pools[I].ItemSize*Cache->Head().Pools[I].Count;
 349    cout << _("Total slack space: ") << SizeToStr(Slack) << endl;
 350
 351    unsigned long Total = 0;
 352    Total = Slack + Size + Cache->Head().DependsCount*Cache->Head().DependencySz +
 353            Cache->Head().VersionCount*Cache->Head().VersionSz +
 354            Cache->Head().PackageCount*Cache->Head().PackageSz +
 355            Cache->Head().VerFileCount*Cache->Head().VerFileSz +
 356            Cache->Head().ProvidesCount*Cache->Head().ProvidesSz;
 357    cout << _("Total space accounted for: ") << SizeToStr(Total) << endl;
 358
 359    return true;
 360 }
 361                                                                         /*}}}*/
 362 // Dump - show everything                                               /*{{{*/
 363 // ---------------------------------------------------------------------
 364 /* This is worthless except fer debugging things */
 365 bool Dump(CommandLine &Cmd)
 366 {
 367    pkgCacheFile CacheFile;
 368    pkgCache *Cache = CacheFile.GetPkgCache();
 369    if (unlikely(Cache == NULL))
 370       return false;
 371
 372    cout << "Using Versioning System: " << Cache->VS->Label << endl;
 373
 374    for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; P++)
 375    {
 376       cout << "Package: " << P.FullName(true) << endl;
 377       for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++)
 378       {
 379          cout << " Version: " << V.VerStr() << endl;
 380          cout << "     File: " << V.FileList().File().FileName() << endl;
 381          for (pkgCache::DepIterator D = V.DependsList(); D.end() == false; D++)
 382             cout << "  Depends: " << D.TargetPkg().FullName(true) << ' ' <<
 383                              DeNull(D.TargetVer()) << endl;
 384          for (pkgCache::DescIterator D = V.DescriptionList(); D.end() == false; D++)
 385          {
 386             cout << " Description Language: " << D.LanguageCode() << endl
 387                  << "                 File: " << D.FileList().File().FileName() << endl
 388                  << "                  MD5: " << D.md5() << endl;
 389          }
 390       }
 391    }
 392
 393    for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F.end() == false; F++)
 394    {
 395       cout << "File: " << F.FileName() << endl;
 396       cout << " Type: " << F.IndexType() << endl;
 397       cout << " Size: " << F->Size << endl;
 398       cout << " ID: " << F->ID << endl;
 399       cout << " Flags: " << F->Flags << endl;
 400       cout << " Time: " << TimeRFC1123(F->mtime) << endl;
 401       cout << " Archive: " << DeNull(F.Archive()) << endl;
 402       cout << " Component: " << DeNull(F.Component()) << endl;
 403       cout << " Version: " << DeNull(F.Version()) << endl;
 404       cout << " Origin: " << DeNull(F.Origin()) << endl;
 405       cout << " Site: " << DeNull(F.Site()) << endl;
 406       cout << " Label: " << DeNull(F.Label()) << endl;
 407       cout << " Architecture: " << DeNull(F.Architecture()) << endl;
 408    }
 409
 410    return true;
 411 }
 412                                                                         /*}}}*/
 413 // DumpAvail - Print out the available list                             /*{{{*/
 414 // ---------------------------------------------------------------------
 415 /* This is needed to make dpkg --merge happy.. I spent a bit of time to
 416    make this run really fast, perhaps I went a little overboard.. */
 417 bool DumpAvail(CommandLine &Cmd)
 418 {
 419    pkgCacheFile CacheFile;
 420    pkgCache *Cache = CacheFile.GetPkgCache();
 421    if (unlikely(Cache == NULL || CacheFile.BuildPolicy() == false))
 422       return false;
 423
 424    unsigned long Count = Cache->HeaderP->PackageCount+1;
 425    pkgCache::VerFile **VFList = new pkgCache::VerFile *[Count];
 426    memset(VFList,0,sizeof(*VFList)*Count);
 427
 428    // Map versions that we want to write out onto the VerList array.
 429    for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; P++)
 430    {
 431       if (P->VersionList == 0)
 432          continue;
 433
 434       /* Find the proper version to use. If the policy says there are no
 435          possible selections we return the installed version, if available..
 436          This prevents dselect from making it obsolete. */
 437       pkgCache::VerIterator V = CacheFile.GetPolicy()->GetCandidateVer(P);
 438       if (V.end() == true)
 439       {
 440          if (P->CurrentVer == 0)
 441             continue;
 442          V = P.CurrentVer();
 443       }
 444
 445       pkgCache::VerFileIterator VF = V.FileList();
 446       for (; VF.end() == false ; VF++)
 447          if ((VF.File()->Flags & pkgCache::Flag::NotSource) == 0)
 448             break;
 449
 450       /* Okay, here we have a bit of a problem.. The policy has selected the
 451          currently installed package - however it only exists in the
 452          status file.. We need to write out something or dselect will mark
 453          the package as obsolete! Thus we emit the status file entry, but
 454          below we remove the status line to make it valid for the
 455          available file. However! We only do this if their do exist *any*
 456          non-source versions of the package - that way the dselect obsolete
 457          handling works OK. */
 458       if (VF.end() == true)
 459       {
 460          for (pkgCache::VerIterator Cur = P.VersionList(); Cur.end() != true; Cur++)
 461          {
 462             for (VF = Cur.FileList(); VF.end() == false; VF++)
 463             {
 464                if ((VF.File()->Flags & pkgCache::Flag::NotSource) == 0)
 465                {
 466                   VF = V.FileList();
 467                   break;
 468                }
 469             }
 470
 471             if (VF.end() == false)
 472                break;
 473          }
 474       }
 475
 476       VFList[P->ID] = VF;
 477    }
 478
 479    LocalitySort(VFList,Count,sizeof(*VFList));
 480
 481    // Iterate over all the package files and write them out.
 482    char *Buffer = new char[Cache->HeaderP->MaxVerFileSize+10];
 483    for (pkgCache::VerFile **J = VFList; *J != 0;)
 484    {
 485       pkgCache::PkgFileIterator File(*Cache,(*J)->File + Cache->PkgFileP);
 486       if (File.IsOk() == false)
 487       {
 488          _error->Error(_("Package file %s is out of sync."),File.FileName());
 489          break;
 490       }
 491
 492       FileFd PkgF(File.FileName(),FileFd::ReadOnly);
 493       if (_error->PendingError() == true)
 494          break;
 495
 496       /* Write all of the records from this package file, since we
 497          already did locality sorting we can now just seek through the
 498          file in read order. We apply 1 more optimization here, since often
 499          there will be < 1 byte gaps between records (for the \n) we read that
 500          into the next buffer and offset a bit.. */
 501       unsigned long Pos = 0;
 502       for (; *J != 0; J++)
 503       {
 504          if ((*J)->File + Cache->PkgFileP != File)
 505             break;
 506
 507          const pkgCache::VerFile &VF = **J;
 508
 509          // Read the record and then write it out again.
 510          unsigned long Jitter = VF.Offset - Pos;
 511          if (Jitter > 8)
 512          {
 513             if (PkgF.Seek(VF.Offset) == false)
 514                break;
 515             Jitter = 0;
 516          }
 517
 518          if (PkgF.Read(Buffer,VF.Size + Jitter) == false)
 519             break;
 520          Buffer[VF.Size + Jitter] = '\n';
 521
 522          // See above..
 523          if ((File->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
 524          {
 525             pkgTagSection Tags;
 526             TFRewriteData RW[] = {{"Status",0},{"Config-Version",0},{}};
 527             const char *Zero = 0;
 528             if (Tags.Scan(Buffer+Jitter,VF.Size+1) == false ||
 529                 TFRewrite(stdout,Tags,&Zero,RW) == false)
 530             {
 531                _error->Error("Internal Error, Unable to parse a package record");
 532                break;
 533             }
 534             fputc('\n',stdout);
 535          }
 536          else
 537          {
 538             if (fwrite(Buffer+Jitter,VF.Size+1,1,stdout) != 1)
 539                break;
 540          }
 541
 542          Pos = VF.Offset + VF.Size;
 543       }
 544
 545       fflush(stdout);
 546       if (_error->PendingError() == true)
 547          break;
 548    }
 549
 550    delete [] Buffer;
 551    delete [] VFList;
 552    return !_error->PendingError();
 553 }
 554                                                                         /*}}}*/
 555 // Depends - Print out a dependency tree                                /*{{{*/
 556 // ---------------------------------------------------------------------
 557 /* */
 558 bool Depends(CommandLine &CmdL)
 559 {
 560    pkgCacheFile CacheFile;
 561    pkgCache *Cache = CacheFile.GetPkgCache();
 562    if (unlikely(Cache == NULL))
 563       return false;
 564
 565    SPtrArray<unsigned> Colours = new unsigned[Cache->Head().PackageCount];
 566    memset(Colours,0,sizeof(*Colours)*Cache->Head().PackageCount);
 567
 568    APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
 569    for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 570       Colours[Pkg->ID] = 1;
 571
 572    bool Recurse = _config->FindB("APT::Cache::RecurseDepends",false);
 573    bool Installed = _config->FindB("APT::Cache::Installed",false);
 574    bool Important = _config->FindB("APT::Cache::Important",false);
 575    bool DidSomething;
 576    do
 577    {
 578       DidSomething = false;
 579       for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
 580       {
 581          if (Colours[Pkg->ID] != 1)
 582             continue;
 583          Colours[Pkg->ID] = 2;
 584          DidSomething = true;
 585
 586          pkgCache::VerIterator Ver = Pkg.VersionList();
 587          if (Ver.end() == true)
 588          {
 589             cout << '<' << Pkg.FullName(true) << '>' << endl;
 590             continue;
 591          }
 592
 593          cout << Pkg.FullName(true) << endl;
 594
 595          for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
 596          {
 597             // Important deps only
 598             if (Important == true)
 599                if (D->Type != pkgCache::Dep::PreDepends &&
 600                    D->Type != pkgCache::Dep::Depends)
 601                   continue;
 602
 603             pkgCache::PkgIterator Trg = D.TargetPkg();
 604
 605             if((Installed && Trg->CurrentVer != 0) || !Installed)
 606               {
 607
 608                 if ((D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
 609                   cout << " |";
 610                 else
 611                   cout << "  ";
 612
 613                 // Show the package
 614                 if (Trg->VersionList == 0)
 615                   cout << D.DepType() << ": <" << Trg.FullName(true) << ">" << endl;
 616                 else
 617                   cout << D.DepType() << ": " << Trg.FullName(true) << endl;
 618
 619                 if (Recurse == true)
 620                   Colours[D.TargetPkg()->ID]++;
 621
 622               }
 623
 624             // Display all solutions
 625             SPtrArray<pkgCache::Version *> List = D.AllTargets();
 626             pkgPrioSortList(*Cache,List);
 627             for (pkgCache::Version **I = List; *I != 0; I++)
 628             {
 629                pkgCache::VerIterator V(*Cache,*I);
 630                if (V != Cache->VerP + V.ParentPkg()->VersionList ||
 631                    V->ParentPkg == D->Package)
 632                   continue;
 633                cout << "    " << V.ParentPkg().FullName(true) << endl;
 634
 635                if (Recurse == true)
 636                   Colours[D.ParentPkg()->ID]++;
 637             }
 638          }
 639       }
 640    }
 641    while (DidSomething == true);
 642
 643    return true;
 644 }
 645                                                                         /*}}}*/
 646 // RDepends - Print out a reverse dependency tree - mbc                 /*{{{*/
 647 // ---------------------------------------------------------------------
 648 /* */
 649 bool RDepends(CommandLine &CmdL)
 650 {
 651    pkgCacheFile CacheFile;
 652    pkgCache *Cache = CacheFile.GetPkgCache();
 653    if (unlikely(Cache == NULL))
 654       return false;
 655
 656    SPtrArray<unsigned> Colours = new unsigned[Cache->Head().PackageCount];
 657    memset(Colours,0,sizeof(*Colours)*Cache->Head().PackageCount);
 658
 659    APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
 660    for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
 661       Colours[Pkg->ID] = 1;
 662
 663    bool Recurse = _config->FindB("APT::Cache::RecurseDepends",false);
 664    bool Installed = _config->FindB("APT::Cache::Installed",false);
 665    bool DidSomething;
 666    do
 667    {
 668       DidSomething = false;
 669       for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
 670       {
 671          if (Colours[Pkg->ID] != 1)
 672             continue;
 673          Colours[Pkg->ID] = 2;
 674          DidSomething = true;
 675
 676          pkgCache::VerIterator Ver = Pkg.VersionList();
 677          if (Ver.end() == true)
 678          {
 679             cout << '<' << Pkg.FullName(true) << '>' << endl;
 680             continue;
 681          }
 682
 683          cout << Pkg.FullName(true) << endl;
 684
 685          cout << "Reverse Depends:" << endl;
 686          for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() == false; D++)
 687          {
 688             // Show the package
 689             pkgCache::PkgIterator Trg = D.ParentPkg();
 690
 691             if((Installed && Trg->CurrentVer != 0) || !Installed)
 692               {
 693
 694                 if ((D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
 695                   cout << " |";
 696                 else
 697                   cout << "  ";
 698
 699                 if (Trg->VersionList == 0)
 700                   cout << D.DepType() << ": <" << Trg.FullName(true) << ">" << endl;
 701                 else
 702                   cout << Trg.FullName(true) << endl;
 703
 704                 if (Recurse == true)
 705                   Colours[D.ParentPkg()->ID]++;
 706
 707               }
 708
 709             // Display all solutions
 710             SPtrArray<pkgCache::Version *> List = D.AllTargets();
 711             pkgPrioSortList(*Cache,List);
 712             for (pkgCache::Version **I = List; *I != 0; I++)
 713             {
 714                pkgCache::VerIterator V(*Cache,*I);
 715                if (V != Cache->VerP + V.ParentPkg()->VersionList ||
 716                    V->ParentPkg == D->Package)
 717                   continue;
 718                cout << "    " << V.ParentPkg().FullName(true) << endl;
 719
 720                if (Recurse == true)
 721                   Colours[D.ParentPkg()->ID]++;
 722             }
 723          }
 724       }
 725    }
 726    while (DidSomething == true);
 727
 728    return true;
 729 }
 730                                                                         /*}}}*/
 731 // xvcg - Generate a graph for xvcg                                     /*{{{*/
 732 // ---------------------------------------------------------------------
 733 // Code contributed from Junichi Uekawa <dancer@debian.org> on 20 June 2002.
 734
 735 bool XVcg(CommandLine &CmdL)
 736 {
 737    pkgCacheFile CacheFile;
 738    pkgCache *Cache = CacheFile.GetPkgCache();
 739    if (unlikely(Cache == NULL))
 740       return false;
 741
 742    bool GivenOnly = _config->FindB("APT::Cache::GivenOnly",false);
 743
 744    /* Normal packages are boxes
 745       Pure Provides are triangles
 746       Mixed are diamonds
 747       rhomb are missing packages*/
 748    const char *Shapes[] = {"ellipse","triangle","box","rhomb"};
 749
 750    /* Initialize the list of packages to show.
 751       1 = To Show
 752       2 = To Show no recurse
 753       3 = Emitted no recurse
 754       4 = Emitted
 755       0 = None */
 756    enum States {None=0, ToShow, ToShowNR, DoneNR, Done};
 757    enum TheFlags {ForceNR=(1<<0)};
 758    unsigned char *Show = new unsigned char[Cache->Head().PackageCount];
 759    unsigned char *Flags = new unsigned char[Cache->Head().PackageCount];
 760    unsigned char *ShapeMap = new unsigned char[Cache->Head().PackageCount];
 761
 762    // Show everything if no arguments given
 763    if (CmdL.FileList[1] == 0)
 764       for (unsigned long I = 0; I != Cache->Head().PackageCount; I++)
 765          Show[I] = ToShow;
 766    else
 767       for (unsigned long I = 0; I != Cache->Head().PackageCount; I++)
 768          Show[I] = None;
 769    memset(Flags,0,sizeof(*Flags)*Cache->Head().PackageCount);
 770
 771    // Map the shapes
 772    for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
 773    {
 774       if (Pkg->VersionList == 0)
 775       {
 776          // Missing
 777          if (Pkg->ProvidesList == 0)
 778             ShapeMap[Pkg->ID] = 0;
 779          else
 780             ShapeMap[Pkg->ID] = 1;
 781       }
 782       else
 783       {
 784          // Normal
 785          if (Pkg->ProvidesList == 0)
 786             ShapeMap[Pkg->ID] = 2;
 787          else
 788             ShapeMap[Pkg->ID] = 3;
 789       }
 790    }
 791
 792    // Load the list of packages from the command line into the show list
 793    std::list<APT::PackageSet::Modifier> mods;
 794    mods.push_back(APT::PackageSet::Modifier(0, ",", APT::PackageSet::Modifier::POSTFIX));
 795    mods.push_back(APT::PackageSet::Modifier(1, "^", APT::PackageSet::Modifier::POSTFIX));
 796    std::map<unsigned short, APT::PackageSet> pkgsets =
 797                 APT::PackageSet::GroupedFromCommandLine(CacheFile, CmdL.FileList + 1, mods, 0);
 798
 799    for (APT::PackageSet::const_iterator Pkg = pkgsets[0].begin();
 800         Pkg != pkgsets[0].end(); ++Pkg)
 801       Show[Pkg->ID] = ToShow;
 802    for (APT::PackageSet::const_iterator Pkg = pkgsets[1].begin();
 803         Pkg != pkgsets[1].end(); ++Pkg)
 804    {
 805       Show[Pkg->ID] = ToShow;
 806       Flags[Pkg->ID] |= ForceNR;
 807    }
 808
 809    // Little header
 810    cout << "graph: { title: \"packages\"" << endl <<
 811      "xmax: 700 ymax: 700 x: 30 y: 30" << endl <<
 812      "layout_downfactor: 8" << endl;
 813
 814    bool Act = true;
 815    while (Act == true)
 816    {
 817       Act = false;
 818       for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
 819       {
 820          // See we need to show this package
 821          if (Show[Pkg->ID] == None || Show[Pkg->ID] >= DoneNR)
 822             continue;
 823
 824          //printf ("node: { title: \"%s\" label: \"%s\" }\n", Pkg.Name(), Pkg.Name());
 825
 826          // Colour as done
 827          if (Show[Pkg->ID] == ToShowNR || (Flags[Pkg->ID] & ForceNR) == ForceNR)
 828          {
 829             // Pure Provides and missing packages have no deps!
 830             if (ShapeMap[Pkg->ID] == 0 || ShapeMap[Pkg->ID] == 1)
 831                Show[Pkg->ID] = Done;
 832             else
 833                Show[Pkg->ID] = DoneNR;
 834          }
 835          else
 836             Show[Pkg->ID] = Done;
 837          Act = true;
 838
 839          // No deps to map out
 840          if (Pkg->VersionList == 0 || Show[Pkg->ID] == DoneNR)
 841             continue;
 842
 843          pkgCache::VerIterator Ver = Pkg.VersionList();
 844          for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
 845          {
 846             // See if anything can meet this dep
 847             // Walk along the actual package providing versions
 848             bool Hit = false;
 849             pkgCache::PkgIterator DPkg = D.TargetPkg();
 850             for (pkgCache::VerIterator I = DPkg.VersionList();
 851                       I.end() == false && Hit == false; I++)
 852             {
 853                if (Cache->VS->CheckDep(I.VerStr(),D->CompareOp,D.TargetVer()) == true)
 854                   Hit = true;
 855             }
 856
 857             // Follow all provides
 858             for (pkgCache::PrvIterator I = DPkg.ProvidesList();
 859                       I.end() == false && Hit == false; I++)
 860             {
 861                if (Cache->VS->CheckDep(I.ProvideVersion(),D->CompareOp,D.TargetVer()) == false)
 862                   Hit = true;
 863             }
 864
 865
 866             // Only graph critical deps
 867             if (D.IsCritical() == true)
 868             {
 869                printf ("edge: { sourcename: \"%s\" targetname: \"%s\" class: 2 ",Pkg.FullName(true).c_str(), D.TargetPkg().FullName(true).c_str() );
 870
 871                // Colour the node for recursion
 872                if (Show[D.TargetPkg()->ID] <= DoneNR)
 873                {
 874                   /* If a conflicts does not meet anything in the database
 875                      then show the relation but do not recurse */
 876                   if (Hit == false &&
 877                       (D->Type == pkgCache::Dep::Conflicts ||
 878                        D->Type == pkgCache::Dep::DpkgBreaks ||
 879                        D->Type == pkgCache::Dep::Obsoletes))
 880                   {
 881                      if (Show[D.TargetPkg()->ID] == None &&
 882                          Show[D.TargetPkg()->ID] != ToShow)
 883                         Show[D.TargetPkg()->ID] = ToShowNR;
 884                   }
 885                   else
 886                   {
 887                      if (GivenOnly == true && Show[D.TargetPkg()->ID] != ToShow)
 888                         Show[D.TargetPkg()->ID] = ToShowNR;
 889                      else
 890                         Show[D.TargetPkg()->ID] = ToShow;
 891                   }
 892                }
 893
 894                // Edge colour
 895                switch(D->Type)
 896                {
 897                   case pkgCache::Dep::Conflicts:
 898                     printf("label: \"conflicts\" color: lightgreen }\n");
 899                     break;
 900                   case pkgCache::Dep::DpkgBreaks:
 901                     printf("label: \"breaks\" color: lightgreen }\n");
 902                     break;
 903                   case pkgCache::Dep::Obsoletes:
 904                     printf("label: \"obsoletes\" color: lightgreen }\n");
 905                     break;
 906
 907                   case pkgCache::Dep::PreDepends:
 908                     printf("label: \"predepends\" color: blue }\n");
 909                     break;
 910
 911                   default:
 912                     printf("}\n");
 913                   break;
 914                }
 915             }
 916          }
 917       }
 918    }
 919
 920    /* Draw the box colours after the fact since we can not tell what colour
 921       they should be until everything is finished drawing */
 922    for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
 923    {
 924       if (Show[Pkg->ID] < DoneNR)
 925          continue;
 926
 927       if (Show[Pkg->ID] == DoneNR)
 928          printf("node: { title: \"%s\" label: \"%s\" color: orange shape: %s }\n", Pkg.FullName(true).c_str(), Pkg.FullName(true).c_str(),
 929                 Shapes[ShapeMap[Pkg->ID]]);
 930       else
 931         printf("node: { title: \"%s\" label: \"%s\" shape: %s }\n", Pkg.FullName(true).c_str(), Pkg.FullName(true).c_str(),
 932                 Shapes[ShapeMap[Pkg->ID]]);
 933
 934    }
 935
 936    delete[] Show;
 937    delete[] Flags;
 938    delete[] ShapeMap;
 939
 940    printf("}\n");
 941    return true;
 942 }
 943                                                                         /*}}}*/
 944 // Dotty - Generate a graph for Dotty                                   /*{{{*/
 945 // ---------------------------------------------------------------------
 946 /* Dotty is the graphvis program for generating graphs. It is a fairly
 947    simple queuing algorithm that just writes dependencies and nodes.
 948    http://www.research.att.com/sw/tools/graphviz/ */
 949 bool Dotty(CommandLine &CmdL)
 950 {
 951    pkgCacheFile CacheFile;
 952    pkgCache *Cache = CacheFile.GetPkgCache();
 953    if (unlikely(Cache == NULL))
 954       return false;
 955
 956    bool GivenOnly = _config->FindB("APT::Cache::GivenOnly",false);
 957
 958    /* Normal packages are boxes
 959       Pure Provides are triangles
 960       Mixed are diamonds
 961       Hexagons are missing packages*/
 962    const char *Shapes[] = {"hexagon","triangle","box","diamond"};
 963
 964    /* Initialize the list of packages to show.
 965       1 = To Show
 966       2 = To Show no recurse
 967       3 = Emitted no recurse
 968       4 = Emitted
 969       0 = None */
 970    enum States {None=0, ToShow, ToShowNR, DoneNR, Done};
 971    enum TheFlags {ForceNR=(1<<0)};
 972    unsigned char *Show = new unsigned char[Cache->Head().PackageCount];
 973    unsigned char *Flags = new unsigned char[Cache->Head().PackageCount];
 974    unsigned char *ShapeMap = new unsigned char[Cache->Head().PackageCount];
 975
 976    // Show everything if no arguments given
 977    if (CmdL.FileList[1] == 0)
 978       for (unsigned long I = 0; I != Cache->Head().PackageCount; I++)
 979          Show[I] = ToShow;
 980    else
 981       for (unsigned long I = 0; I != Cache->Head().PackageCount; I++)
 982          Show[I] = None;
 983    memset(Flags,0,sizeof(*Flags)*Cache->Head().PackageCount);
 984
 985    // Map the shapes
 986    for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
 987    {
 988       if (Pkg->VersionList == 0)
 989       {
 990          // Missing
 991          if (Pkg->ProvidesList == 0)
 992             ShapeMap[Pkg->ID] = 0;
 993          else
 994             ShapeMap[Pkg->ID] = 1;
 995       }
 996       else
 997       {
 998          // Normal
 999          if (Pkg->ProvidesList == 0)
1000             ShapeMap[Pkg->ID] = 2;
1001          else
1002             ShapeMap[Pkg->ID] = 3;
1003       }
1004    }
1005
1006    // Load the list of packages from the command line into the show list
1007    std::list<APT::PackageSet::Modifier> mods;
1008    mods.push_back(APT::PackageSet::Modifier(0, ",", APT::PackageSet::Modifier::POSTFIX));
1009    mods.push_back(APT::PackageSet::Modifier(1, "^", APT::PackageSet::Modifier::POSTFIX));
1010    std::map<unsigned short, APT::PackageSet> pkgsets =
1011                 APT::PackageSet::GroupedFromCommandLine(CacheFile, CmdL.FileList + 1, mods, 0);
1012
1013    for (APT::PackageSet::const_iterator Pkg = pkgsets[0].begin();
1014         Pkg != pkgsets[0].end(); ++Pkg)
1015       Show[Pkg->ID] = ToShow;
1016    for (APT::PackageSet::const_iterator Pkg = pkgsets[1].begin();
1017         Pkg != pkgsets[1].end(); ++Pkg)
1018    {
1019       Show[Pkg->ID] = ToShow;
1020       Flags[Pkg->ID] |= ForceNR;
1021    }
1022
1023    // Little header
1024    printf("digraph packages {\n");
1025    printf("concentrate=true;\n");
1026    printf("size=\"30,40\";\n");
1027
1028    bool Act = true;
1029    while (Act == true)
1030    {
1031       Act = false;
1032       for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
1033       {
1034          // See we need to show this package
1035          if (Show[Pkg->ID] == None || Show[Pkg->ID] >= DoneNR)
1036             continue;
1037
1038          // Colour as done
1039          if (Show[Pkg->ID] == ToShowNR || (Flags[Pkg->ID] & ForceNR) == ForceNR)
1040          {
1041             // Pure Provides and missing packages have no deps!
1042             if (ShapeMap[Pkg->ID] == 0 || ShapeMap[Pkg->ID] == 1)
1043                Show[Pkg->ID] = Done;
1044             else
1045                Show[Pkg->ID] = DoneNR;
1046          }
1047          else
1048             Show[Pkg->ID] = Done;
1049          Act = true;
1050
1051          // No deps to map out
1052          if (Pkg->VersionList == 0 || Show[Pkg->ID] == DoneNR)
1053             continue;
1054
1055          pkgCache::VerIterator Ver = Pkg.VersionList();
1056          for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
1057          {
1058             // See if anything can meet this dep
1059             // Walk along the actual package providing versions
1060             bool Hit = false;
1061             pkgCache::PkgIterator DPkg = D.TargetPkg();
1062             for (pkgCache::VerIterator I = DPkg.VersionList();
1063                       I.end() == false && Hit == false; I++)
1064             {
1065                if (Cache->VS->CheckDep(I.VerStr(),D->CompareOp,D.TargetVer()) == true)
1066                   Hit = true;
1067             }
1068
1069             // Follow all provides
1070             for (pkgCache::PrvIterator I = DPkg.ProvidesList();
1071                       I.end() == false && Hit == false; I++)
1072             {
1073                if (Cache->VS->CheckDep(I.ProvideVersion(),D->CompareOp,D.TargetVer()) == false)
1074                   Hit = true;
1075             }
1076
1077             // Only graph critical deps
1078             if (D.IsCritical() == true)
1079             {
1080                printf("\"%s\" -> \"%s\"",Pkg.FullName(true).c_str(),D.TargetPkg().FullName(true).c_str());
1081
1082                // Colour the node for recursion
1083                if (Show[D.TargetPkg()->ID] <= DoneNR)
1084                {
1085                   /* If a conflicts does not meet anything in the database
1086                      then show the relation but do not recurse */
1087                   if (Hit == false &&
1088                       (D->Type == pkgCache::Dep::Conflicts ||
1089                        D->Type == pkgCache::Dep::Obsoletes))
1090                   {
1091                      if (Show[D.TargetPkg()->ID] == None &&
1092                          Show[D.TargetPkg()->ID] != ToShow)
1093                         Show[D.TargetPkg()->ID] = ToShowNR;
1094                   }
1095                   else
1096                   {
1097                      if (GivenOnly == true && Show[D.TargetPkg()->ID] != ToShow)
1098                         Show[D.TargetPkg()->ID] = ToShowNR;
1099                      else
1100                         Show[D.TargetPkg()->ID] = ToShow;
1101                   }
1102                }
1103
1104                // Edge colour
1105                switch(D->Type)
1106                {
1107                   case pkgCache::Dep::Conflicts:
1108                   case pkgCache::Dep::Obsoletes:
1109                   printf("[color=springgreen];\n");
1110                   break;
1111
1112                   case pkgCache::Dep::PreDepends:
1113                   printf("[color=blue];\n");
1114                   break;
1115
1116                   default:
1117                   printf(";\n");
1118                   break;
1119                }
1120             }
1121          }
1122       }
1123    }
1124
1125    /* Draw the box colours after the fact since we can not tell what colour
1126       they should be until everything is finished drawing */
1127    for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); Pkg.end() == false; Pkg++)
1128    {
1129       if (Show[Pkg->ID] < DoneNR)
1130          continue;
1131
1132       // Orange box for early recursion stoppage
1133       if (Show[Pkg->ID] == DoneNR)
1134          printf("\"%s\" [color=orange,shape=%s];\n",Pkg.FullName(true).c_str(),
1135                 Shapes[ShapeMap[Pkg->ID]]);
1136       else
1137          printf("\"%s\" [shape=%s];\n",Pkg.FullName(true).c_str(),
1138                 Shapes[ShapeMap[Pkg->ID]]);
1139    }
1140
1141    printf("}\n");
1142    return true;
1143 }
1144                                                                         /*}}}*/
1145 // DoAdd - Perform an adding operation                                  /*{{{*/
1146 // ---------------------------------------------------------------------
1147 /* */
1148 bool DoAdd(CommandLine &CmdL)
1149 {
1150    return _error->Error("Unimplemented");
1151 #if 0
1152    // Make sure there is at least one argument
1153    if (CmdL.FileSize() <= 1)
1154       return _error->Error("You must give at least one file name");
1155
1156    // Open the cache
1157    FileFd CacheF(_config->FindFile("Dir::Cache::pkgcache"),FileFd::WriteAny);
1158    if (_error->PendingError() == true)
1159       return false;
1160
1161    DynamicMMap Map(CacheF,MMap::Public);
1162    if (_error->PendingError() == true)
1163       return false;
1164
1165    OpTextProgress Progress(*_config);
1166    pkgCacheGenerator Gen(Map,Progress);
1167    if (_error->PendingError() == true)
1168       return false;
1169
1170    unsigned long Length = CmdL.FileSize() - 1;
1171    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1172    {
1173       Progress.OverallProgress(I - CmdL.FileList,Length,1,"Generating cache");
1174       Progress.SubProgress(Length);
1175
1176       // Do the merge
1177       FileFd TagF(*I,FileFd::ReadOnly);
1178       debListParser Parser(TagF);
1179       if (_error->PendingError() == true)
1180          return _error->Error("Problem opening %s",*I);
1181
1182       if (Gen.SelectFile(*I,"") == false)
1183          return _error->Error("Problem with SelectFile");
1184
1185       if (Gen.MergeList(Parser) == false)
1186          return _error->Error("Problem with MergeList");
1187    }
1188
1189    Progress.Done();
1190    GCache = &Gen.GetCache();
1191    Stats(CmdL);
1192
1193    return true;
1194 #endif
1195 }
1196                                                                         /*}}}*/
1197 // DisplayRecord - Displays the complete record for the package         /*{{{*/
1198 // ---------------------------------------------------------------------
1199 /* This displays the package record from the proper package index file.
1200    It is not used by DumpAvail for performance reasons. */
1201 bool DisplayRecord(pkgCacheFile &CacheFile, pkgCache::VerIterator V)
1202 {
1203    pkgCache *Cache = CacheFile.GetPkgCache();
1204    if (unlikely(Cache == NULL))
1205       return false;
1206
1207    // Find an appropriate file
1208    pkgCache::VerFileIterator Vf = V.FileList();
1209    for (; Vf.end() == false; Vf++)
1210       if ((Vf.File()->Flags & pkgCache::Flag::NotSource) == 0)
1211          break;
1212    if (Vf.end() == true)
1213       Vf = V.FileList();
1214
1215    // Check and load the package list file
1216    pkgCache::PkgFileIterator I = Vf.File();
1217    if (I.IsOk() == false)
1218       return _error->Error(_("Package file %s is out of sync."),I.FileName());
1219
1220    FileFd PkgF;
1221    if (PkgF.Open(I.FileName(), FileFd::ReadOnly) == false)
1222       return false;
1223
1224    // Read the record
1225    unsigned char *Buffer = new unsigned char[Cache->HeaderP->MaxVerFileSize+1];
1226    Buffer[V.FileList()->Size] = '\n';
1227    if (PkgF.Seek(V.FileList()->Offset) == false ||
1228        PkgF.Read(Buffer,V.FileList()->Size) == false)
1229    {
1230       delete [] Buffer;
1231       return false;
1232    }
1233
1234    // Get a pointer to start of Description field
1235    const unsigned char *DescP = (unsigned char*)strstr((char*)Buffer, "Description:");
1236
1237    // Write all but Description
1238    if (fwrite(Buffer,1,DescP - Buffer,stdout) < (size_t)(DescP - Buffer))
1239    {
1240       delete [] Buffer;
1241       return false;
1242    }
1243
1244    // Show the right description
1245    pkgRecords Recs(*Cache);
1246    pkgCache::DescIterator Desc = V.TranslatedDescription();
1247    pkgRecords::Parser &P = Recs.Lookup(Desc.FileList());
1248    cout << "Description" << ( (strcmp(Desc.LanguageCode(),"") != 0) ? "-" : "" ) << Desc.LanguageCode() << ": " << P.LongDesc();
1249
1250    // Find the first field after the description (if there is any)
1251    for(DescP++;DescP != &Buffer[V.FileList()->Size];DescP++)
1252    {
1253       if(*DescP == '\n' && *(DescP+1) != ' ')
1254       {
1255          // write the rest of the buffer
1256          const unsigned char *end=&Buffer[V.FileList()->Size];
1257          if (fwrite(DescP,1,end-DescP,stdout) < (size_t)(end-DescP))
1258          {
1259             delete [] Buffer;
1260             return false;
1261          }
1262
1263          break;
1264       }
1265    }
1266    // write a final newline (after the description)
1267    cout<<endl;
1268    delete [] Buffer;
1269
1270    return true;
1271 }
1272                                                                         /*}}}*/
1273
1274 struct ExDescFile
1275 {
1276    pkgCache::DescFile *Df;
1277    bool NameMatch;
1278 };
1279
1280 // Search - Perform a search                                            /*{{{*/
1281 // ---------------------------------------------------------------------
1282 /* This searches the package names and package descriptions for a pattern */
1283 bool Search(CommandLine &CmdL)
1284 {
1285    bool const ShowFull = _config->FindB("APT::Cache::ShowFull",false);
1286    bool const NamesOnly = _config->FindB("APT::Cache::NamesOnly",false);
1287    unsigned int const NumPatterns = CmdL.FileSize() -1;
1288
1289    pkgCacheFile CacheFile;
1290    pkgCache *Cache = CacheFile.GetPkgCache();
1291    pkgDepCache::Policy *Plcy = CacheFile.GetPolicy();
1292    if (unlikely(Cache == NULL || Plcy == NULL))
1293       return false;
1294
1295    // Make sure there is at least one argument
1296    if (NumPatterns < 1)
1297       return _error->Error(_("You must give at least one search pattern"));
1298
1299    // Compile the regex pattern
1300    regex_t *Patterns = new regex_t[NumPatterns];
1301    memset(Patterns,0,sizeof(*Patterns)*NumPatterns);
1302    for (unsigned I = 0; I != NumPatterns; I++)
1303    {
1304       if (regcomp(&Patterns[I],CmdL.FileList[I+1],REG_EXTENDED | REG_ICASE |
1305                   REG_NOSUB) != 0)
1306       {
1307          for (; I != 0; I--)
1308             regfree(&Patterns[I]);
1309          return _error->Error("Regex compilation error");
1310       }
1311    }
1312
1313    if (_error->PendingError() == true)
1314    {
1315       for (unsigned I = 0; I != NumPatterns; I++)
1316          regfree(&Patterns[I]);
1317       return false;
1318    }
1319
1320    ExDescFile *DFList = new ExDescFile[Cache->HeaderP->GroupCount+1];
1321    memset(DFList,0,sizeof(*DFList)*Cache->HeaderP->GroupCount+1);
1322
1323    // Map versions that we want to write out onto the VerList array.
1324    for (pkgCache::GrpIterator G = Cache->GrpBegin(); G.end() == false; ++G)
1325    {
1326       if (DFList[G->ID].NameMatch == true)
1327          continue;
1328
1329       DFList[G->ID].NameMatch = true;
1330       for (unsigned I = 0; I != NumPatterns; I++)
1331       {
1332          if (regexec(&Patterns[I],G.Name(),0,0,0) == 0)
1333             continue;
1334          DFList[G->ID].NameMatch = false;
1335          break;
1336       }
1337
1338       // Doing names only, drop any that dont match..
1339       if (NamesOnly == true && DFList[G->ID].NameMatch == false)
1340          continue;
1341
1342       // Find the proper version to use
1343       pkgCache::PkgIterator P = G.FindPreferredPkg();
1344       if (P.end() == true)
1345          continue;
1346       pkgCache::VerIterator V = Plcy->GetCandidateVer(P);
1347       if (V.end() == false)
1348          DFList[G->ID].Df = V.DescriptionList().FileList();
1349
1350       if (DFList[G->ID].NameMatch == false)
1351          continue;
1352
1353       // Include all the packages that provide matching names too
1354       for (pkgCache::PrvIterator Prv = P.ProvidesList() ; Prv.end() == false; Prv++)
1355       {
1356          pkgCache::VerIterator V = Plcy->GetCandidateVer(Prv.OwnerPkg());
1357          if (V.end() == true)
1358             continue;
1359
1360          unsigned long id = Prv.OwnerPkg().Group()->ID;
1361          DFList[id].Df = V.DescriptionList().FileList();
1362          DFList[id].NameMatch = true;
1363       }
1364    }
1365
1366    LocalitySort(&DFList->Df,Cache->HeaderP->GroupCount,sizeof(*DFList));
1367
1368    // Create the text record parser
1369    pkgRecords Recs(*Cache);
1370    // Iterate over all the version records and check them
1371    for (ExDescFile *J = DFList; J->Df != 0; J++)
1372    {
1373       pkgRecords::Parser &P = Recs.Lookup(pkgCache::DescFileIterator(*Cache,J->Df));
1374
1375       if (J->NameMatch == false && NamesOnly == false)
1376       {
1377          string const LongDesc = P.LongDesc();
1378          J->NameMatch = true;
1379          for (unsigned I = 0; I != NumPatterns; I++)
1380          {
1381             if (regexec(&Patterns[I],LongDesc.c_str(),0,0,0) == 0)
1382                continue;
1383             J->NameMatch = false;
1384             break;
1385          }
1386       }
1387
1388       if (J->NameMatch == true)
1389       {
1390          if (ShowFull == true)
1391          {
1392             const char *Start;
1393             const char *End;
1394             P.GetRec(Start,End);
1395             fwrite(Start,End-Start,1,stdout);
1396             putc('\n',stdout);
1397          }
1398          else
1399             printf("%s - %s\n",P.Name().c_str(),P.ShortDesc().c_str());
1400       }
1401    }
1402
1403    delete [] DFList;
1404    for (unsigned I = 0; I != NumPatterns; I++)
1405       regfree(&Patterns[I]);
1406    if (ferror(stdout))
1407        return _error->Error("Write to stdout failed");
1408    return true;
1409 }
1410
1411
1412 /* show automatically installed packages (sorted) */
1413 bool ShowAuto(CommandLine &CmdL)
1414 {
1415    pkgCacheFile CacheFile;
1416    pkgCache *Cache = CacheFile.GetPkgCache();
1417    pkgDepCache *DepCache = CacheFile.GetDepCache();
1418    if (unlikely(Cache == NULL || DepCache == NULL))
1419       return false;
1420
1421    std::vector<string> packages;
1422    packages.reserve(Cache->HeaderP->PackageCount / 3);
1423
1424    for (pkgCache::PkgIterator P = Cache->PkgBegin(); P.end() == false; P++)
1425       if ((*DepCache)[P].Flags & pkgCache::Flag::Auto)
1426          packages.push_back(P.Name());
1427
1428     std::sort(packages.begin(), packages.end());
1429
1430     for (vector<string>::iterator I = packages.begin(); I != packages.end(); I++)
1431             cout << *I << "\n";
1432
1433    return true;
1434 }
1435                                                                         /*}}}*/
1436 // ShowPackage - Dump the package record to the screen                  /*{{{*/
1437 // ---------------------------------------------------------------------
1438 /* */
1439 bool ShowPackage(CommandLine &CmdL)
1440 {
1441    pkgCacheFile CacheFile;
1442    APT::VersionSet::Version const select = _config->FindB("APT::Cache::AllVersions", true) ?
1443                         APT::VersionSet::ALL : APT::VersionSet::CANDIDATE;
1444    APT::VersionSet const verset = APT::VersionSet::FromCommandLine(CacheFile, CmdL.FileList + 1, select);
1445    for (APT::VersionSet::const_iterator Ver = verset.begin(); Ver != verset.end(); ++Ver)
1446       if (DisplayRecord(CacheFile, Ver) == false)
1447          return false;
1448
1449    if (verset.empty() == false)
1450         return true;
1451    return _error->Error(_("No packages found"));
1452 }
1453                                                                         /*}}}*/
1454 // ShowPkgNames - Show package names                                    /*{{{*/
1455 // ---------------------------------------------------------------------
1456 /* This does a prefix match on the first argument */
1457 bool ShowPkgNames(CommandLine &CmdL)
1458 {
1459    pkgCacheFile CacheFile;
1460    if (unlikely(CacheFile.BuildCaches(NULL, false) == false))
1461       return false;
1462    pkgCache::GrpIterator I = CacheFile.GetPkgCache()->GrpBegin();
1463    bool const All = _config->FindB("APT::Cache::AllNames","false");
1464
1465    if (CmdL.FileList[1] != 0)
1466    {
1467       for (;I.end() != true; I++)
1468       {
1469          if (All == false && I->FirstPackage == 0)
1470             continue;
1471          if (I.FindPkg("any")->VersionList == 0)
1472             continue;
1473          if (strncmp(I.Name(),CmdL.FileList[1],strlen(CmdL.FileList[1])) == 0)
1474             cout << I.Name() << endl;
1475       }
1476
1477       return true;
1478    }
1479
1480    // Show all pkgs
1481    for (;I.end() != true; I++)
1482    {
1483       if (All == false && I->FirstPackage == 0)
1484          continue;
1485       if (I.FindPkg("any")->VersionList == 0)
1486          continue;
1487       cout << I.Name() << endl;
1488    }
1489
1490    return true;
1491 }
1492                                                                         /*}}}*/
1493 // ShowSrcPackage - Show source package records                         /*{{{*/
1494 // ---------------------------------------------------------------------
1495 /* */
1496 bool ShowSrcPackage(CommandLine &CmdL)
1497 {
1498    pkgCacheFile CacheFile;
1499    pkgSourceList *List = CacheFile.GetSourceList();
1500    if (unlikely(List == NULL))
1501       return false;
1502
1503    // Create the text record parsers
1504    pkgSrcRecords SrcRecs(*List);
1505    if (_error->PendingError() == true)
1506       return false;
1507
1508    unsigned found = 0;
1509    for (const char **I = CmdL.FileList + 1; *I != 0; I++)
1510    {
1511       SrcRecs.Restart();
1512
1513       pkgSrcRecords::Parser *Parse;
1514       unsigned found_this = 0;
1515       while ((Parse = SrcRecs.Find(*I,false)) != 0) {
1516         cout << Parse->AsStr() << endl;;
1517         found++;
1518         found_this++;
1519       }
1520       if (found_this == 0) {
1521         _error->Warning(_("Unable to locate package %s"),*I);
1522         continue;
1523       }
1524    }
1525    if (found > 0)
1526         return true;
1527    return _error->Error(_("No packages found"));
1528 }
1529                                                                         /*}}}*/
1530 // Policy - Show the results of the preferences file                    /*{{{*/
1531 // ---------------------------------------------------------------------
1532 /* */
1533 bool Policy(CommandLine &CmdL)
1534 {
1535    pkgCacheFile CacheFile;
1536    pkgCache *Cache = CacheFile.GetPkgCache();
1537    pkgPolicy *Plcy = CacheFile.GetPolicy();
1538    pkgSourceList *SrcList = CacheFile.GetSourceList();
1539    if (unlikely(Cache == NULL || Plcy == NULL || SrcList == NULL))
1540       return false;
1541
1542    /* Should the MultiArchKiller be run to see which pseudo packages for an
1543       arch all package are currently installed? Activating it gives a speed
1544       penality for no real gain beside enhanced debugging, so in general no. */
1545    if (_config->FindB("APT::Cache::Policy::DepCache", false) == true)
1546       CacheFile.GetDepCache();
1547
1548    // Print out all of the package files
1549    if (CmdL.FileList[1] == 0)
1550    {
1551       cout << _("Package files:") << endl;
1552       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F.end() == false; F++)
1553       {
1554          // Locate the associated index files so we can derive a description
1555          pkgIndexFile *Indx;
1556          if (SrcList->FindIndex(F,Indx) == false &&
1557              _system->FindIndex(F,Indx) == false)
1558             return _error->Error(_("Cache is out of sync, can't x-ref a package file"));
1559
1560          printf("%4i %s\n",
1561                 Plcy->GetPriority(F),Indx->Describe(true).c_str());
1562
1563          // Print the reference information for the package
1564          string Str = F.RelStr();
1565          if (Str.empty() == false)
1566             printf("     release %s\n",F.RelStr().c_str());
1567          if (F.Site() != 0 && F.Site()[0] != 0)
1568             printf("     origin %s\n",F.Site());
1569       }
1570
1571       // Show any packages have explicit pins
1572       cout << _("Pinned packages:") << endl;
1573       pkgCache::PkgIterator I = Cache->PkgBegin();
1574       for (;I.end() != true; I++)
1575       {
1576          if (Plcy->GetPriority(I) == 0)
1577             continue;
1578
1579          // Print the package name and the version we are forcing to
1580          cout << "     " << I.FullName(true) << " -> ";
1581
1582          pkgCache::VerIterator V = Plcy->GetMatch(I);
1583          if (V.end() == true)
1584             cout << _("(not found)") << endl;
1585          else
1586             cout << V.VerStr() << endl;
1587       }
1588
1589       return true;
1590    }
1591
1592    string const myArch = _config->Find("APT::Architecture");
1593    char const * const msgInstalled = _("  Installed: ");
1594    char const * const msgCandidate = _("  Candidate: ");
1595    short const InstalledLessCandidate =
1596                 mbstowcs(NULL, msgInstalled, 0) - mbstowcs(NULL, msgCandidate, 0);
1597    short const deepInstalled =
1598                 (InstalledLessCandidate < 0 ? (InstalledLessCandidate*-1) : 0) - 1;
1599    short const deepCandidate =
1600                 (InstalledLessCandidate > 0 ? (InstalledLessCandidate) : 0) - 1;
1601
1602    // Print out detailed information for each package
1603    APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
1604    for (APT::PackageSet::const_iterator I = pkgset.begin(); I != pkgset.end(); ++I)
1605    {
1606       pkgCache::PkgIterator Pkg = I.Group().FindPkg("any");
1607
1608       for (; Pkg.end() != true; Pkg = I.Group().NextPkg(Pkg)) {
1609       if (strcmp(Pkg.Arch(),"all") == 0)
1610          continue;
1611
1612       cout << Pkg.FullName(true) << ":" << endl;
1613
1614       // Installed version
1615       cout << msgInstalled << OutputInDepth(deepInstalled, " ");
1616       if (Pkg->CurrentVer == 0)
1617          cout << _("(none)") << endl;
1618       else
1619          cout << Pkg.CurrentVer().VerStr() << endl;
1620
1621       // Candidate Version
1622       cout << msgCandidate << OutputInDepth(deepCandidate, " ");
1623       pkgCache::VerIterator V = Plcy->GetCandidateVer(Pkg);
1624       if (V.end() == true)
1625          cout << _("(none)") << endl;
1626       else
1627          cout << V.VerStr() << endl;
1628
1629       // Pinned version
1630       if (Plcy->GetPriority(Pkg) != 0)
1631       {
1632          cout << _("  Package pin: ");
1633          V = Plcy->GetMatch(Pkg);
1634          if (V.end() == true)
1635             cout << _("(not found)") << endl;
1636          else
1637             cout << V.VerStr() << endl;
1638       }
1639
1640       // Show the priority tables
1641       cout << _("  Version table:") << endl;
1642       for (V = Pkg.VersionList(); V.end() == false; V++)
1643       {
1644          if (Pkg.CurrentVer() == V)
1645             cout << " *** " << V.VerStr();
1646          else
1647             cout << "     " << V.VerStr();
1648          cout << " " << Plcy->GetPriority(Pkg) << endl;
1649          for (pkgCache::VerFileIterator VF = V.FileList(); VF.end() == false; VF++)
1650          {
1651             // Locate the associated index files so we can derive a description
1652             pkgIndexFile *Indx;
1653             if (SrcList->FindIndex(VF.File(),Indx) == false &&
1654                 _system->FindIndex(VF.File(),Indx) == false)
1655                return _error->Error(_("Cache is out of sync, can't x-ref a package file"));
1656             printf("       %4i %s\n",Plcy->GetPriority(VF.File()),
1657                    Indx->Describe(true).c_str());
1658          }
1659       }
1660       }
1661    }
1662
1663    return true;
1664 }
1665                                                                         /*}}}*/
1666 // Madison - Look a bit like katie's madison                            /*{{{*/
1667 // ---------------------------------------------------------------------
1668 /* */
1669 bool Madison(CommandLine &CmdL)
1670 {
1671    pkgCacheFile CacheFile;
1672    pkgSourceList *SrcList = CacheFile.GetSourceList();
1673
1674    if (SrcList == 0)
1675       return false;
1676
1677    // Create the src text record parsers and ignore errors about missing
1678    // deb-src lines that are generated from pkgSrcRecords::pkgSrcRecords
1679    pkgSrcRecords SrcRecs(*SrcList);
1680    if (_error->PendingError() == true)
1681       _error->Discard();
1682
1683    APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
1684    for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
1685    {
1686       if (Pkg.end() == false)
1687       {
1688          for (pkgCache::VerIterator V = Pkg.VersionList(); V.end() == false; V++)
1689          {
1690             for (pkgCache::VerFileIterator VF = V.FileList(); VF.end() == false; VF++)
1691             {
1692 // This might be nice, but wouldn't uniquely identify the source -mdz
1693 //                if (VF.File().Archive() != 0)
1694 //                {
1695 //                   cout << setw(10) << Pkg.Name() << " | " << setw(10) << V.VerStr() << " | "
1696 //                        << VF.File().Archive() << endl;
1697 //                }
1698
1699                // Locate the associated index files so we can derive a description
1700                for (pkgSourceList::const_iterator S = SrcList->begin(); S != SrcList->end(); S++)
1701                {
1702                     vector<pkgIndexFile *> *Indexes = (*S)->GetIndexFiles();
1703                     for (vector<pkgIndexFile *>::const_iterator IF = Indexes->begin();
1704                          IF != Indexes->end(); IF++)
1705                     {
1706                          if ((*IF)->FindInCache(*(VF.File().Cache())) == VF.File())
1707                          {
1708                                    cout << setw(10) << Pkg.FullName(true) << " | " << setw(10) << V.VerStr() << " | "
1709                                         << (*IF)->Describe(true) << endl;
1710                          }
1711                     }
1712                }
1713             }
1714          }
1715       }
1716
1717
1718       SrcRecs.Restart();
1719       pkgSrcRecords::Parser *SrcParser;
1720       while ((SrcParser = SrcRecs.Find(Pkg.Name(),false)) != 0)
1721       {
1722          // Maybe support Release info here too eventually
1723          cout << setw(10) << SrcParser->Package() << " | "
1724               << setw(10) << SrcParser->Version() << " | "
1725               << SrcParser->Index().Describe(true) << endl;
1726       }
1727    }
1728
1729    return true;
1730 }
1731                                                                         /*}}}*/
1732 // GenCaches - Call the main cache generator                            /*{{{*/
1733 // ---------------------------------------------------------------------
1734 /* */
1735 bool GenCaches(CommandLine &Cmd)
1736 {
1737    OpTextProgress Progress(*_config);
1738
1739    pkgCacheFile CacheFile;
1740    return CacheFile.BuildCaches(&Progress, true);
1741 }
1742                                                                         /*}}}*/
1743 // ShowHelp - Show a help screen                                        /*{{{*/
1744 // ---------------------------------------------------------------------
1745 /* */
1746 bool ShowHelp(CommandLine &Cmd)
1747 {
1748    ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
1749             COMMON_ARCH,__DATE__,__TIME__);
1750
1751    if (_config->FindB("version") == true)
1752      return true;
1753
1754    cout <<
1755     _("Usage: apt-cache [options] command\n"
1756       "       apt-cache [options] add file1 [file2 ...]\n"
1757       "       apt-cache [options] showpkg pkg1 [pkg2 ...]\n"
1758       "       apt-cache [options] showsrc pkg1 [pkg2 ...]\n"
1759       "\n"
1760       "apt-cache is a low-level tool used to manipulate APT's binary\n"
1761       "cache files, and query information from them\n"
1762       "\n"
1763       "Commands:\n"
1764       "   add - Add a package file to the source cache\n"
1765       "   gencaches - Build both the package and source cache\n"
1766       "   showpkg - Show some general information for a single package\n"
1767       "   showsrc - Show source records\n"
1768       "   stats - Show some basic statistics\n"
1769       "   dump - Show the entire file in a terse form\n"
1770       "   dumpavail - Print an available file to stdout\n"
1771       "   unmet - Show unmet dependencies\n"
1772       "   search - Search the package list for a regex pattern\n"
1773       "   show - Show a readable record for the package\n"
1774       "   showauto - Display a list of automatically installed packages\n"
1775       "   depends - Show raw dependency information for a package\n"
1776       "   rdepends - Show reverse dependency information for a package\n"
1777       "   pkgnames - List the names of all packages in the system\n"
1778       "   dotty - Generate package graphs for GraphViz\n"
1779       "   xvcg - Generate package graphs for xvcg\n"
1780       "   policy - Show policy settings\n"
1781       "\n"
1782       "Options:\n"
1783       "  -h   This help text.\n"
1784       "  -p=? The package cache.\n"
1785       "  -s=? The source cache.\n"
1786       "  -q   Disable progress indicator.\n"
1787       "  -i   Show only important deps for the unmet command.\n"
1788       "  -c=? Read this configuration file\n"
1789       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
1790       "See the apt-cache(8) and apt.conf(5) manual pages for more information.\n");
1791    return true;
1792 }
1793                                                                         /*}}}*/
1794 // CacheInitialize - Initialize things for apt-cache                    /*{{{*/
1795 // ---------------------------------------------------------------------
1796 /* */
1797 void CacheInitialize()
1798 {
1799    _config->Set("quiet",0);
1800    _config->Set("help",false);
1801 }
1802                                                                         /*}}}*/
1803 int main(int argc,const char *argv[])                                   /*{{{*/
1804 {
1805    CommandLine::Args Args[] = {
1806       {'h',"help","help",0},
1807       {'v',"version","version",0},
1808       {'p',"pkg-cache","Dir::Cache::pkgcache",CommandLine::HasArg},
1809       {'s',"src-cache","Dir::Cache::srcpkgcache",CommandLine::HasArg},
1810       {'q',"quiet","quiet",CommandLine::IntLevel},
1811       {'i',"important","APT::Cache::Important",0},
1812       {'f',"full","APT::Cache::ShowFull",0},
1813       {'g',"generate","APT::Cache::Generate",0},
1814       {'a',"all-versions","APT::Cache::AllVersions",0},
1815       {'n',"names-only","APT::Cache::NamesOnly",0},
1816       {0,"all-names","APT::Cache::AllNames",0},
1817       {0,"recurse","APT::Cache::RecurseDepends",0},
1818       {'t',"target-release","APT::Default-Release",CommandLine::HasArg},
1819       {'t',"default-release","APT::Default-Release",CommandLine::HasArg},
1820       {'c',"config-file",0,CommandLine::ConfigFile},
1821       {'o',"option",0,CommandLine::ArbItem},
1822       {0,"installed","APT::Cache::Installed",0},
1823       {0,0,0,0}};
1824    CommandLine::Dispatch CmdsA[] = {{"help",&ShowHelp},
1825                                     {"add",&DoAdd},
1826                                     {"gencaches",&GenCaches},
1827                                     {"showsrc",&ShowSrcPackage},
1828                                     {0,0}};
1829    CommandLine::Dispatch CmdsB[] = {{"showpkg",&DumpPackage},
1830                                     {"stats",&Stats},
1831                                     {"dump",&Dump},
1832                                     {"dumpavail",&DumpAvail},
1833                                     {"unmet",&UnMet},
1834                                     {"search",&Search},
1835                                     {"depends",&Depends},
1836                                     {"rdepends",&RDepends},
1837                                     {"dotty",&Dotty},
1838                                     {"xvcg",&XVcg},
1839                                     {"show",&ShowPackage},
1840                                     {"pkgnames",&ShowPkgNames},
1841                                     {"showauto",&ShowAuto},
1842                                     {"policy",&Policy},
1843                                     {"madison",&Madison},
1844                                     {0,0}};
1845
1846    CacheInitialize();
1847
1848    // Set up gettext support
1849    setlocale(LC_ALL,"");
1850    textdomain(PACKAGE);
1851
1852    // Parse the command line and initialize the package library
1853    CommandLine CmdL(Args,_config);
1854    if (pkgInitConfig(*_config) == false ||
1855        CmdL.Parse(argc,argv) == false ||
1856        pkgInitSystem(*_config,_system) == false)
1857    {
1858       _error->DumpErrors();
1859       return 100;
1860    }
1861
1862    // See if the help should be shown
1863    if (_config->FindB("help") == true ||
1864        CmdL.FileSize() == 0)
1865    {
1866       ShowHelp(CmdL);
1867       return 0;
1868    }
1869
1870    // Deal with stdout not being a tty
1871    if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
1872       _config->Set("quiet","1");
1873
1874    if (_config->Exists("APT::Cache::Generate") == true)
1875       _config->Set("pkgCacheFile::Generate", _config->FindB("APT::Cache::Generate", true));
1876
1877    if (CmdL.DispatchArg(CmdsA,false) == false && _error->PendingError() == false)
1878       CmdL.DispatchArg(CmdsB);
1879
1880    // Print any errors or warnings found during parsing
1881    bool const Errors = _error->PendingError();
1882    if (_config->FindI("quiet",0) > 0)
1883       _error->DumpErrors();
1884    else
1885       _error->DumpErrors(GlobalError::DEBUG);
1886    return Errors == true ? 100 : 0;
1887 }
1888                                                                         /*}}}*/