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