apt-pkg/cacheiterators.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4
   5    Cache Iterators - Iterators for navigating the cache structure
   6
   7    The iterators all provides ++,==,!=,->,* and end for their type.
   8    The end function can be used to tell if the list has been fully
   9    traversed.
  10
  11    Unlike STL iterators these contain helper functions to access the data
  12    that is being iterated over. This is because the data structures can't
  13    be formed in a manner that is intuitive to use and also mmapable.
  14
  15    For each variable in the target structure that would need a translation
  16    to be accessed correctly a translating function of the same name is
  17    present in the iterator. If applicable the translating function will
  18    return an iterator.
  19
  20    The DepIterator can iterate over two lists, a list of 'version depends'
  21    or a list of 'package reverse depends'. The type is determined by the
  22    structure passed to the constructor, which should be the structure
  23    that has the depends pointer as a member. The provide iterator has the
  24    same system.
  25
  26    This header is not user includable, please use apt-pkg/pkgcache.h
  27
  28    ##################################################################### */
  29                                                                         /*}}}*/
  30 #ifndef PKGLIB_CACHEITERATORS_H
  31 #define PKGLIB_CACHEITERATORS_H
  32 #include<apt-pkg/pkgcache.h>
  33 #include<apt-pkg/macros.h>
  34
  35 #include<iterator>
  36 #include <iosfwd>
  37 #include <string>
  38 #ifdef APT_PKG_EXPOSE_STRING_VIEW
  39 #include <apt-pkg/string_view.h>
  40 #endif
  41
  42 #include<string.h>
  43
  44 // abstract Iterator template                                           /*{{{*/
  45 /* This template provides the very basic iterator methods we
  46    need to have for doing some walk-over-the-cache magic */
  47 template<typename Str, typename Itr> class pkgCache::Iterator :
  48                         public std::iterator<std::forward_iterator_tag, Str> {
  49         /** \brief Returns the Pointer for this struct in the owner
  50          *  The implementation of this method should be pretty short
  51          *  as it will only return the Pointer into the mmap stored
  52          *  in the owner but the name of this pointer is different for
  53          *  each structure and we want to abstract here at least for the
  54          *  basic methods from the actual structure.
  55          *  \return Pointer to the first structure of this type
  56          */
  57         Str* OwnerPointer() const { return static_cast<Itr const*>(this)->OwnerPointer(); }
  58
  59         protected:
  60         Str *S;
  61         pkgCache *Owner;
  62
  63         public:
  64         // Iteration
  65         inline bool end() const {return Owner == 0 || S == OwnerPointer();}
  66
  67         // Comparison
  68         inline bool operator ==(const Itr &B) const {return S == B.S;}
  69         inline bool operator !=(const Itr &B) const {return S != B.S;}
  70
  71         // Accessors
  72         inline Str *operator ->() {return S;}
  73         inline Str const *operator ->() const {return S;}
  74         inline operator Str *() {return S == OwnerPointer() ? 0 : S;}
  75         inline operator Str const *() const {return S == OwnerPointer() ? 0 : S;}
  76         inline Str &operator *() {return *S;}
  77         inline Str const &operator *() const {return *S;}
  78         inline pkgCache *Cache() const {return Owner;}
  79
  80         // Mixed stuff
  81         inline bool IsGood() const { return S && Owner && ! end();}
  82         inline unsigned long Index() const {return S - OwnerPointer();}
  83
  84         void ReMap(void const * const oldMap, void const * const newMap) {
  85                 if (Owner == 0 || S == 0)
  86                         return;
  87                 S += (Str const * const)(newMap) - (Str const * const)(oldMap);
  88         }
  89
  90         // Constructors - look out for the variable assigning
  91         inline Iterator() : S(0), Owner(0) {}
  92         inline Iterator(pkgCache &Owner,Str *T = 0) : S(T), Owner(&Owner) {}
  93 };
  94                                                                         /*}}}*/
  95 // Group Iterator                                                       /*{{{*/
  96 /* Packages with the same name are collected in a Group so someone only
  97    interest in package names can iterate easily over the names, so the
  98    different architectures can be treated as of the "same" package
  99    (apt internally treat them as totally different packages) */
 100 class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
 101         long HashIndex;
 102
 103         public:
 104         inline Group* OwnerPointer() const {
 105                 return (Owner != 0) ? Owner->GrpP : 0;
 106         }
 107
 108         // This constructor is the 'begin' constructor, never use it.
 109         explicit inline GrpIterator(pkgCache &Owner) : Iterator<Group, GrpIterator>(Owner), HashIndex(-1) {
 110                 S = OwnerPointer();
 111                 operator++();
 112         }
 113
 114         GrpIterator& operator++();
 115         inline GrpIterator operator++(int) { GrpIterator const tmp(*this); operator++(); return tmp; }
 116
 117         inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;}
 118         inline PkgIterator PackageList() const;
 119         PkgIterator FindPkg(std::string Arch = "any") const;
 120 #ifdef APT_PKG_EXPOSE_STRING_VIEW
 121         APT_HIDDEN PkgIterator FindPkg(APT::StringView Arch = APT::StringView("any", 3)) const;
 122         APT_HIDDEN PkgIterator FindPkg(const char *Arch) const;
 123 #endif
 124         /** \brief find the package with the "best" architecture
 125
 126             The best architecture is either the "native" or the first
 127             in the list of Architectures which is not an end-Pointer
 128
 129             \param PreferNonVirtual tries to respond with a non-virtual package
 130                    and only if this fails returns the best virtual package */
 131         PkgIterator FindPreferredPkg(bool const &PreferNonVirtual = true) const;
 132         PkgIterator NextPkg(PkgIterator const &Pkg) const;
 133
 134         // Constructors
 135         inline GrpIterator(pkgCache &Owner, Group *Trg) : Iterator<Group, GrpIterator>(Owner, Trg), HashIndex(0) {
 136                 if (S == 0)
 137                         S = OwnerPointer();
 138         }
 139         inline GrpIterator() : Iterator<Group, GrpIterator>(), HashIndex(0) {}
 140
 141 };
 142                                                                         /*}}}*/
 143 // Package Iterator                                                     /*{{{*/
 144 class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 145         long HashIndex;
 146
 147         public:
 148         inline Package* OwnerPointer() const {
 149                 return (Owner != 0) ? Owner->PkgP : 0;
 150         }
 151
 152         // This constructor is the 'begin' constructor, never use it.
 153         explicit inline PkgIterator(pkgCache &Owner) : Iterator<Package, PkgIterator>(Owner), HashIndex(-1) {
 154                 S = OwnerPointer();
 155                 operator++();
 156         }
 157
 158         PkgIterator& operator++();
 159         inline PkgIterator operator++(int) { PkgIterator const tmp(*this); operator++(); return tmp; }
 160
 161         enum OkState {NeedsNothing,NeedsUnpack,NeedsConfigure};
 162
 163         // Accessors
 164         inline const char *Name() const { return Group().Name(); }
 165         // Versions have sections - and packages can have different versions with different sections
 166         // so this interface is broken by design. Run as fast as you can to Version.Section().
 167         APT_DEPRECATED_MSG("Use the .Section method of VerIterator instead") inline const char *Section() const;
 168         inline bool Purge() const {return S->CurrentState == pkgCache::State::Purge ||
 169                 (S->CurrentVer == 0 && S->CurrentState == pkgCache::State::NotInstalled);}
 170         inline const char *Arch() const {return S->Arch == 0?0:Owner->StrP + S->Arch;}
 171         inline APT_PURE GrpIterator Group() const { return GrpIterator(*Owner, Owner->GrpP + S->Group);}
 172
 173         inline VerIterator VersionList() const APT_PURE;
 174         inline VerIterator CurrentVer() const APT_PURE;
 175         inline DepIterator RevDependsList() const APT_PURE;
 176         inline PrvIterator ProvidesList() const APT_PURE;
 177         OkState State() const APT_PURE;
 178         APT_DEPRECATED_MSG("This method does not respect apt_preferences! Use pkgDepCache::GetCandidateVersion(Pkg)") const char *CandVersion() const APT_PURE;
 179         const char *CurVersion() const APT_PURE;
 180
 181         //Nice printable representation
 182         APT_DEPRECATED_MSG("Use APT::PrettyPkg instead") friend std::ostream& operator <<(std::ostream& out, PkgIterator i);
 183         std::string FullName(bool const &Pretty = false) const;
 184
 185         // Constructors
 186         inline PkgIterator(pkgCache &Owner,Package *Trg) : Iterator<Package, PkgIterator>(Owner, Trg), HashIndex(0) {
 187                 if (S == 0)
 188                         S = OwnerPointer();
 189         }
 190         inline PkgIterator() : Iterator<Package, PkgIterator>(), HashIndex(0) {}
 191 };
 192                                                                         /*}}}*/
 193 // Version Iterator                                                     /*{{{*/
 194 class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
 195         public:
 196         inline Version* OwnerPointer() const {
 197                 return (Owner != 0) ? Owner->VerP : 0;
 198         }
 199
 200         // Iteration
 201         inline VerIterator& operator++() {if (S != Owner->VerP) S = Owner->VerP + S->NextVer; return *this;}
 202         inline VerIterator operator++(int) { VerIterator const tmp(*this); operator++(); return tmp; }
 203
 204         // Comparison
 205         int CompareVer(const VerIterator &B) const;
 206         /** \brief compares two version and returns if they are similar
 207
 208             This method should be used to identify if two pseudo versions are
 209             referring to the same "real" version */
 210         inline bool SimilarVer(const VerIterator &B) const {
 211                 return (B.end() == false && S->Hash == B->Hash && strcmp(VerStr(), B.VerStr()) == 0);
 212         }
 213
 214         // Accessors
 215         inline const char *VerStr() const {return S->VerStr == 0?0:Owner->StrP + S->VerStr;}
 216         inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;}
 217         /** \brief source package name this version comes from
 218            Always contains the name, even if it is the same as the binary name */
 219         inline const char *SourcePkgName() const {return Owner->StrP + S->SourcePkgName;}
 220         /** \brief source version this version comes from
 221            Always contains the version string, even if it is the same as the binary version */
 222         inline const char *SourceVerStr() const {return Owner->StrP + S->SourceVerStr;}
 223         inline const char *Arch() const {
 224                 if ((S->MultiArch & pkgCache::Version::All) == pkgCache::Version::All)
 225                         return "all";
 226                 return S->ParentPkg == 0?0:Owner->StrP + ParentPkg()->Arch;
 227         }
 228         inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);}
 229
 230         inline DescIterator DescriptionList() const;
 231         DescIterator TranslatedDescription() const;
 232         inline DepIterator DependsList() const;
 233         inline PrvIterator ProvidesList() const;
 234         inline TagIterator TagList() const;
 235         inline VerFileIterator FileList() const;
 236         bool Downloadable() const;
 237         inline const char *PriorityType() const {return Owner->Priority(S->Priority);}
 238         const char *MultiArchType() const APT_PURE;
 239         std::string RelStr() const;
 240
 241         bool Automatic() const;
 242         VerFileIterator NewestFile() const;
 243
 244         inline VerIterator(pkgCache &Owner,Version *Trg = 0) : Iterator<Version, VerIterator>(Owner, Trg) {
 245                 if (S == 0)
 246                         S = OwnerPointer();
 247         }
 248         inline VerIterator() : Iterator<Version, VerIterator>() {}
 249 };
 250                                                                         /*}}}*/
 251 // Tag Iterator                                                         /*{{{*/
 252 class pkgCache::TagIterator
 253 {
 254    Tag *Tg;
 255    pkgCache *Owner;
 256
 257    void _dummy();
 258
 259    public:
 260
 261    // Iteration
 262    void operator ++(int) {if (Tg != Owner->TagP) Tg = Owner->TagP + Tg->NextTag;};
 263    inline void operator ++() {operator ++(0);};
 264    inline bool end() const {return Tg == Owner->TagP?true:false;};
 265    inline void operator =(const TagIterator &B) {Tg = B.Tg; Owner = B.Owner;};
 266
 267    // Comparison
 268    inline bool operator ==(const TagIterator &B) const {return Tg == B.Tg;};
 269    inline bool operator !=(const TagIterator &B) const {return Tg != B.Tg;};
 270    int CompareTag(const TagIterator &B) const;
 271
 272    // Accessors
 273    inline Tag *operator ->() {return Tg;};
 274    inline Tag const *operator ->() const {return Tg;};
 275    inline Tag &operator *() {return *Tg;};
 276    inline Tag const &operator *() const {return *Tg;};
 277    inline operator Tag *() {return Tg == Owner->TagP?0:Tg;};
 278    inline operator Tag const *() const {return Tg == Owner->TagP?0:Tg;};
 279    inline pkgCache *Cache() {return Owner;};
 280
 281    inline const char *Name() const {return Owner->StrP + Tg->Name;};
 282    inline unsigned long Index() const {return Tg - Owner->TagP;};
 283
 284    inline TagIterator() : Tg(0), Owner(0) {};
 285    inline TagIterator(pkgCache &Owner,Tag *Trg = 0) : Tg(Trg),
 286               Owner(&Owner)
 287    {
 288       if (Tg == 0)
 289          Tg = Owner.TagP;
 290    };
 291 };
 292                                                                         /*}}}*/
 293 // Description Iterator                                                 /*{{{*/
 294 class pkgCache::DescIterator : public Iterator<Description, DescIterator> {
 295         public:
 296         inline Description* OwnerPointer() const {
 297                 return (Owner != 0) ? Owner->DescP : 0;
 298         }
 299
 300         // Iteration
 301         inline DescIterator& operator++() {if (S != Owner->DescP) S = Owner->DescP + S->NextDesc; return *this;}
 302         inline DescIterator operator++(int) { DescIterator const tmp(*this); operator++(); return tmp; }
 303
 304         // Comparison
 305         int CompareDesc(const DescIterator &B) const;
 306
 307         // Accessors
 308         inline const char *LanguageCode() const {return Owner->StrP + S->language_code;}
 309         inline const char *md5() const {return Owner->StrP + S->md5sum;}
 310         inline DescFileIterator FileList() const;
 311
 312         inline DescIterator() : Iterator<Description, DescIterator>() {}
 313         inline DescIterator(pkgCache &Owner,Description *Trg = 0) : Iterator<Description, DescIterator>(Owner, Trg) {
 314                 if (S == 0)
 315                         S = Owner.DescP;
 316         }
 317 };
 318                                                                         /*}}}*/
 319 // Dependency iterator                                                  /*{{{*/
 320 class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 321         enum {DepVer, DepRev} Type;
 322         DependencyData * S2;
 323
 324         public:
 325         inline Dependency* OwnerPointer() const {
 326                 return (Owner != 0) ? Owner->DepP : 0;
 327         }
 328
 329         // Iteration
 330         DepIterator& operator++();
 331         inline DepIterator operator++(int) { DepIterator const tmp(*this); operator++(); return tmp; }
 332
 333         // Accessors
 334         inline const char *TargetVer() const {return S2->Version == 0?0:Owner->StrP + S2->Version;}
 335         inline PkgIterator TargetPkg() const {return PkgIterator(*Owner,Owner->PkgP + S2->Package);}
 336         inline PkgIterator SmartTargetPkg() const {PkgIterator R(*Owner,0);SmartTargetPkg(R);return R;}
 337         inline VerIterator ParentVer() const {return VerIterator(*Owner,Owner->VerP + S->ParentVer);}
 338         inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->ParentVer].ParentPkg);}
 339         inline bool Reverse() const {return Type == DepRev;}
 340         bool IsCritical() const APT_PURE;
 341         bool IsNegative() const APT_PURE;
 342         bool IsIgnorable(PrvIterator const &Prv) const APT_PURE;
 343         bool IsIgnorable(PkgIterator const &Pkg) const APT_PURE;
 344         /* MultiArch can be translated to SingleArch for an resolver and we did so,
 345            by adding dependencies to help the resolver understand the problem, but
 346            sometimes it is needed to identify these to ignore them… */
 347         inline bool IsMultiArchImplicit() const APT_PURE {
 348                 return (S2->CompareOp & pkgCache::Dep::MultiArchImplicit) == pkgCache::Dep::MultiArchImplicit;
 349         }
 350         /* This covers additionally negative dependencies, which aren't arch-specific,
 351            but change architecture nonetheless as a Conflicts: foo does applies for all archs */
 352         bool IsImplicit() const APT_PURE;
 353
 354         bool IsSatisfied(VerIterator const &Ver) const APT_PURE;
 355         bool IsSatisfied(PrvIterator const &Prv) const APT_PURE;
 356         void GlobOr(DepIterator &Start,DepIterator &End);
 357         Version **AllTargets() const;
 358         bool SmartTargetPkg(PkgIterator &Result) const;
 359         inline const char *CompType() const {return Owner->CompType(S2->CompareOp);}
 360         inline const char *DepType() const {return Owner->DepType(S2->Type);}
 361
 362         // overrides because we are special
 363         struct DependencyProxy
 364         {
 365            map_stringitem_t &Version;
 366            map_pointer_t &Package;
 367            map_id_t &ID;
 368            unsigned char &Type;
 369            unsigned char &CompareOp;
 370            map_pointer_t &ParentVer;
 371            map_pointer_t &DependencyData;
 372            map_pointer_t &NextRevDepends;
 373            map_pointer_t &NextDepends;
 374            map_pointer_t &NextData;
 375            DependencyProxy const * operator->() const { return this; }
 376            DependencyProxy * operator->() { return this; }
 377         };
 378         inline DependencyProxy operator->() const {return (DependencyProxy) { S2->Version, S2->Package, S->ID, S2->Type, S2->CompareOp, S->ParentVer, S->DependencyData, S->NextRevDepends, S->NextDepends, S2->NextData };}
 379         inline DependencyProxy operator->() {return (DependencyProxy) { S2->Version, S2->Package, S->ID, S2->Type, S2->CompareOp, S->ParentVer, S->DependencyData, S->NextRevDepends, S->NextDepends, S2->NextData };}
 380         void ReMap(void const * const oldMap, void const * const newMap)
 381         {
 382                 Iterator<Dependency, DepIterator>::ReMap(oldMap, newMap);
 383                 if (Owner == 0 || S == 0 || S2 == 0)
 384                         return;
 385                 S2 += (DependencyData const * const)(newMap) - (DependencyData const * const)(oldMap);
 386         }
 387
 388         //Nice printable representation
 389         APT_DEPRECATED_MSG("Use APT::PrettyDep instead") friend std::ostream& operator <<(std::ostream& out, DepIterator D);
 390
 391         inline DepIterator(pkgCache &Owner, Dependency *Trg, Version* = 0) :
 392                 Iterator<Dependency, DepIterator>(Owner, Trg), Type(DepVer), S2(Trg == 0 ? Owner.DepDataP : (Owner.DepDataP + Trg->DependencyData)) {
 393                 if (S == 0)
 394                         S = Owner.DepP;
 395         }
 396         inline DepIterator(pkgCache &Owner, Dependency *Trg, Package*) :
 397                 Iterator<Dependency, DepIterator>(Owner, Trg), Type(DepRev), S2(Trg == 0 ? Owner.DepDataP : (Owner.DepDataP + Trg->DependencyData)) {
 398                 if (S == 0)
 399                         S = Owner.DepP;
 400         }
 401         inline DepIterator() : Iterator<Dependency, DepIterator>(), Type(DepVer), S2(0) {}
 402 };
 403                                                                         /*}}}*/
 404 // Provides iterator                                                    /*{{{*/
 405 class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 406         enum {PrvVer, PrvPkg} Type;
 407
 408         public:
 409         inline Provides* OwnerPointer() const {
 410                 return (Owner != 0) ? Owner->ProvideP : 0;
 411         }
 412
 413         // Iteration
 414         inline PrvIterator& operator ++() {if (S != Owner->ProvideP) S = Owner->ProvideP +
 415            (Type == PrvVer?S->NextPkgProv:S->NextProvides); return *this;}
 416         inline PrvIterator operator++(int) { PrvIterator const tmp(*this); operator++(); return tmp; }
 417
 418         // Accessors
 419         inline const char *Name() const {return ParentPkg().Name();}
 420         inline const char *ProvideVersion() const {return S->ProvideVersion == 0?0:Owner->StrP + S->ProvideVersion;}
 421         inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);}
 422         inline VerIterator OwnerVer() const {return VerIterator(*Owner,Owner->VerP + S->Version);}
 423         inline PkgIterator OwnerPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->Version].ParentPkg);}
 424
 425         /* MultiArch can be translated to SingleArch for an resolver and we did so,
 426            by adding provides to help the resolver understand the problem, but
 427            sometimes it is needed to identify these to ignore them… */
 428         bool IsMultiArchImplicit() const APT_PURE
 429         { return (S->Flags & pkgCache::Flag::MultiArchImplicit) == pkgCache::Flag::MultiArchImplicit; }
 430
 431
 432         inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {}
 433         inline PrvIterator(pkgCache &Owner, Provides *Trg, Version*) :
 434                 Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvVer) {
 435                 if (S == 0)
 436                         S = Owner.ProvideP;
 437         }
 438         inline PrvIterator(pkgCache &Owner, Provides *Trg, Package*) :
 439                 Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvPkg) {
 440                 if (S == 0)
 441                         S = Owner.ProvideP;
 442         }
 443 };
 444                                                                         /*}}}*/
 445 // Release file                                                         /*{{{*/
 446 class pkgCache::RlsFileIterator : public Iterator<ReleaseFile, RlsFileIterator> {
 447         public:
 448         inline ReleaseFile* OwnerPointer() const {
 449                 return (Owner != 0) ? Owner->RlsFileP : 0;
 450         }
 451
 452         // Iteration
 453         inline RlsFileIterator& operator++() {if (S != Owner->RlsFileP) S = Owner->RlsFileP + S->NextFile;return *this;}
 454         inline RlsFileIterator operator++(int) { RlsFileIterator const tmp(*this); operator++(); return tmp; }
 455
 456         // Accessors
 457         inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;}
 458         inline const char *Archive() const {return S->Archive == 0?0:Owner->StrP + S->Archive;}
 459         inline const char *Version() const {return S->Version == 0?0:Owner->StrP + S->Version;}
 460         inline const char *Origin() const {return S->Origin == 0?0:Owner->StrP + S->Origin;}
 461         inline const char *Codename() const {return S->Codename ==0?0:Owner->StrP + S->Codename;}
 462         inline const char *Label() const {return S->Label == 0?0:Owner->StrP + S->Label;}
 463         inline const char *Site() const {return S->Site == 0?0:Owner->StrP + S->Site;}
 464         inline bool Flagged(pkgCache::Flag::ReleaseFileFlags const flag) const {return (S->Flags & flag) == flag; }
 465
 466         bool IsOk();
 467         std::string RelStr();
 468
 469         // Constructors
 470         inline RlsFileIterator() : Iterator<ReleaseFile, RlsFileIterator>() {}
 471         explicit inline RlsFileIterator(pkgCache &Owner) : Iterator<ReleaseFile, RlsFileIterator>(Owner, Owner.RlsFileP) {}
 472         inline RlsFileIterator(pkgCache &Owner,ReleaseFile *Trg) : Iterator<ReleaseFile, RlsFileIterator>(Owner, Trg) {}
 473 };
 474                                                                         /*}}}*/
 475 // Package file                                                         /*{{{*/
 476 class pkgCache::PkgFileIterator : public Iterator<PackageFile, PkgFileIterator> {
 477         public:
 478         inline PackageFile* OwnerPointer() const {
 479                 return (Owner != 0) ? Owner->PkgFileP : 0;
 480         }
 481
 482         // Iteration
 483         inline PkgFileIterator& operator++() {if (S != Owner->PkgFileP) S = Owner->PkgFileP + S->NextFile; return *this;}
 484         inline PkgFileIterator operator++(int) { PkgFileIterator const tmp(*this); operator++(); return tmp; }
 485
 486         // Accessors
 487         inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;}
 488         inline pkgCache::RlsFileIterator ReleaseFile() const {return RlsFileIterator(*Owner, Owner->RlsFileP + S->Release);}
 489         inline const char *Archive() const {return S->Release == 0 ? Component() : ReleaseFile().Archive();}
 490         inline const char *Version() const {return S->Release == 0 ? NULL : ReleaseFile().Version();}
 491         inline const char *Origin() const {return S->Release == 0 ? NULL : ReleaseFile().Origin();}
 492         inline const char *Codename() const {return S->Release == 0 ? NULL : ReleaseFile().Codename();}
 493         inline const char *Label() const {return S->Release == 0 ? NULL : ReleaseFile().Label();}
 494         inline const char *Site() const {return S->Release == 0 ? NULL : ReleaseFile().Site();}
 495         inline bool Flagged(pkgCache::Flag::ReleaseFileFlags const flag) const {return S->Release== 0 ? false : ReleaseFile().Flagged(flag);}
 496         inline bool Flagged(pkgCache::Flag::PkgFFlags const flag) const {return (S->Flags & flag) == flag;}
 497         inline const char *Component() const {return S->Component == 0?0:Owner->StrP + S->Component;}
 498         inline const char *Architecture() const {return S->Architecture == 0?0:Owner->StrP + S->Architecture;}
 499         inline const char *IndexType() const {return S->IndexType == 0?0:Owner->StrP + S->IndexType;}
 500
 501         bool IsOk();
 502         std::string RelStr();
 503
 504         // Constructors
 505         inline PkgFileIterator() : Iterator<PackageFile, PkgFileIterator>() {}
 506         explicit inline PkgFileIterator(pkgCache &Owner) : Iterator<PackageFile, PkgFileIterator>(Owner, Owner.PkgFileP) {}
 507         inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Iterator<PackageFile, PkgFileIterator>(Owner, Trg) {}
 508 };
 509                                                                         /*}}}*/
 510 // Version File                                                         /*{{{*/
 511 class pkgCache::VerFileIterator : public pkgCache::Iterator<VerFile, VerFileIterator> {
 512         public:
 513         inline VerFile* OwnerPointer() const {
 514                 return (Owner != 0) ? Owner->VerFileP : 0;
 515         }
 516
 517         // Iteration
 518         inline VerFileIterator& operator++() {if (S != Owner->VerFileP) S = Owner->VerFileP + S->NextFile; return *this;}
 519         inline VerFileIterator operator++(int) { VerFileIterator const tmp(*this); operator++(); return tmp; }
 520
 521         // Accessors
 522         inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);}
 523
 524         inline VerFileIterator() : Iterator<VerFile, VerFileIterator>() {}
 525         inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Iterator<VerFile, VerFileIterator>(Owner, Trg) {}
 526 };
 527                                                                         /*}}}*/
 528 // Description File                                                     /*{{{*/
 529 class pkgCache::DescFileIterator : public Iterator<DescFile, DescFileIterator> {
 530         public:
 531         inline DescFile* OwnerPointer() const {
 532                 return (Owner != 0) ? Owner->DescFileP : 0;
 533         }
 534
 535         // Iteration
 536         inline DescFileIterator& operator++() {if (S != Owner->DescFileP) S = Owner->DescFileP + S->NextFile; return *this;}
 537         inline DescFileIterator operator++(int) { DescFileIterator const tmp(*this); operator++(); return tmp; }
 538
 539         // Accessors
 540         inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);}
 541
 542         inline DescFileIterator() : Iterator<DescFile, DescFileIterator>() {}
 543         inline DescFileIterator(pkgCache &Owner,DescFile *Trg) : Iterator<DescFile, DescFileIterator>(Owner, Trg) {}
 544 };
 545                                                                         /*}}}*/
 546 // Inlined Begin functions can't be in the class because of order problems /*{{{*/
 547 inline pkgCache::PkgIterator pkgCache::GrpIterator::PackageList() const
 548        {return PkgIterator(*Owner,Owner->PkgP + S->FirstPackage);}
 549 inline pkgCache::VerIterator pkgCache::PkgIterator::VersionList() const
 550        {return VerIterator(*Owner,Owner->VerP + S->VersionList);}
 551 inline pkgCache::VerIterator pkgCache::PkgIterator::CurrentVer() const
 552        {return VerIterator(*Owner,Owner->VerP + S->CurrentVer);}
 553 inline pkgCache::DepIterator pkgCache::PkgIterator::RevDependsList() const
 554        {return DepIterator(*Owner,Owner->DepP + S->RevDepends,S);}
 555 inline pkgCache::PrvIterator pkgCache::PkgIterator::ProvidesList() const
 556        {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);}
 557 inline pkgCache::DescIterator pkgCache::VerIterator::DescriptionList() const
 558        {return DescIterator(*Owner,Owner->DescP + S->DescriptionList);}
 559 inline pkgCache::PrvIterator pkgCache::VerIterator::ProvidesList() const
 560        {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);}
 561 inline pkgCache::TagIterator pkgCache::VerIterator::TagList() const
 562        {return TagIterator(*Owner,Owner->TagP + S->TagList);};
 563 inline pkgCache::DepIterator pkgCache::VerIterator::DependsList() const
 564        {return DepIterator(*Owner,Owner->DepP + S->DependsList,S);}
 565 inline pkgCache::VerFileIterator pkgCache::VerIterator::FileList() const
 566        {return VerFileIterator(*Owner,Owner->VerFileP + S->FileList);}
 567 inline pkgCache::DescFileIterator pkgCache::DescIterator::FileList() const
 568        {return DescFileIterator(*Owner,Owner->DescFileP + S->FileList);}
 569 APT_DEPRECATED_MSG("Use the .Section method of VerIterator instead") inline const char * pkgCache::PkgIterator::Section() const
 570        {return S->VersionList == 0 ? 0 : VersionList().Section();}
 571                                                                         /*}}}*/
 572 #endif