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- // -*- mode: cpp; mode: fold -*-
- // Description /*{{{*/
- // $Id: cacheiterators.h,v 1.13 1999/02/23 06:46:24 jgg Exp $
- /* ######################################################################
-
- Cache Iterators - Iterators for navigating the cache structure
-
- The iterators all provides ++,==,!=,->,* and end for their type.
- The end function can be used to tell if the list has been fully
- traversed.
-
- Unlike STL iterators these contain helper functions to access the data
- that is being iterated over. This is because the data structures can't
- be formed in a manner that is intuitive to use and also mmapable.
-
- For each variable in the target structure that would need a translation
- to be accessed correctly a translating function of the same name is
- present in the iterator. If applicable the translating function will
- return an iterator.
-
- The DepIterator can iterate over two lists, a list of 'version depends'
- or a list of 'package reverse depends'. The type is determined by the
- structure passed to the constructor, which should be the structure
- that has the depends pointer as a member. The provide iterator has the
- same system.
-
- This header is not user includable, please use apt-pkg/pkgcache.h
-
- ##################################################################### */
- /*}}}*/
- // Header section: pkglib
- #ifndef PKGLIB_CACHEITERATORS_H
- #define PKGLIB_CACHEITERATORS_H
-
- #ifdef __GNUG__
- #pragma interface "apt-pkg/cacheiterators.h"
- #endif
-
- // Package Iterator
- class pkgCache::PkgIterator
- {
- Package *Pkg;
- pkgCache *Owner;
- long HashIndex;
-
- public:
-
- enum OkState {NeedsNothing,NeedsUnpack,NeedsConfigure};
-
- // Iteration
- void operator ++(int);
- inline void operator ++() {operator ++(0);};
- inline bool end() const {return Owner == 0 || Pkg == Owner->PkgP?true:false;};
-
- // Comparison
- inline bool operator ==(const PkgIterator &B) const {return Pkg == B.Pkg;};
- inline bool operator !=(const PkgIterator &B) const {return Pkg != B.Pkg;};
-
- // Accessors
- inline Package *operator ->() {return Pkg;};
- inline Package const *operator ->() const {return Pkg;};
- inline Package const &operator *() const {return *Pkg;};
- inline operator Package *() {return Pkg == Owner->PkgP?0:Pkg;};
- inline operator Package const *() const {return Pkg == Owner->PkgP?0:Pkg;};
-
- inline const char *Name() const {return Pkg->Name == 0?0:Owner->StrP + Pkg->Name;};
- inline const char *Section() const {return Pkg->Section == 0?0:Owner->StrP + Pkg->Section;};
- inline const char *TargetDist() const {return Pkg->TargetDist == 0?0:Owner->StrP + Pkg->TargetDist;};
- inline VerIterator VersionList() const;
- inline VerIterator TargetVer() const;
- inline VerIterator CurrentVer() const;
- inline DepIterator RevDependsList() const;
- inline PrvIterator ProvidesList() const;
- inline unsigned long Index() const {return Pkg - Owner->PkgP;};
- OkState State() const;
-
- // Constructors
- inline PkgIterator(pkgCache &Owner) : Owner(&Owner), HashIndex(-1)
- {
- Pkg = Owner.PkgP;
- operator ++(0);
- };
- inline PkgIterator(pkgCache &Owner,Package *Trg) : Pkg(Trg), Owner(&Owner),
- HashIndex(0)
- {
- if (Pkg == 0)
- Pkg = Owner.PkgP;
- };
- inline PkgIterator() : Pkg(0), Owner(0), HashIndex(0) {};
- };
-
- // Version Iterator
- class pkgCache::VerIterator
- {
- Version *Ver;
- pkgCache *Owner;
-
- void _dummy();
-
- public:
-
- // Iteration
- void operator ++(int) {if (Ver != Owner->VerP) Ver = Owner->VerP + Ver->NextVer;};
- inline void operator ++() {operator ++(0);};
- inline bool end() const {return Ver == Owner->VerP?true:false;};
- inline void operator =(const VerIterator &B) {Ver = B.Ver; Owner = B.Owner;};
-
- // Comparison
- inline bool operator ==(const VerIterator &B) const {return Ver == B.Ver;};
- inline bool operator !=(const VerIterator &B) const {return Ver != B.Ver;};
- int CompareVer(const VerIterator &B) const;
-
- // Accessors
- inline Version *operator ->() {return Ver;};
- inline Version const *operator ->() const {return Ver;};
- inline Version &operator *() {return *Ver;};
- inline Version const &operator *() const {return *Ver;};
- inline operator Version *() {return Ver == Owner->VerP?0:Ver;};
- inline operator Version const *() const {return Ver == Owner->VerP?0:Ver;};
-
- inline const char *VerStr() const {return Ver->VerStr == 0?0:Owner->StrP + Ver->VerStr;};
- inline const char *Section() const {return Ver->Section == 0?0:Owner->StrP + Ver->Section;};
- inline const char *Arch() const {return Ver->Arch == 0?0:Owner->StrP + Ver->Arch;};
- inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + Ver->ParentPkg);};
- inline DepIterator DependsList() const;
- inline PrvIterator ProvidesList() const;
- inline VerFileIterator FileList() const;
- inline unsigned long Index() const {return Ver - Owner->VerP;};
- bool Downloadable() const;
- const char *PriorityType();
-
- bool Automatic() const;
- VerFileIterator NewestFile() const;
-
- inline VerIterator() : Ver(0), Owner(0) {};
- inline VerIterator(pkgCache &Owner,Version *Trg = 0) : Ver(Trg),
- Owner(&Owner)
- {
- if (Ver == 0)
- Ver = Owner.VerP;
- };
- };
-
- // Dependency iterator
- class pkgCache::DepIterator
- {
- Dependency *Dep;
- enum {DepVer, DepRev} Type;
- pkgCache *Owner;
-
- void _dummy();
-
- public:
-
- // Iteration
- void operator ++(int) {if (Dep != Owner->DepP) Dep = Owner->DepP +
- (Type == DepVer?Dep->NextDepends:Dep->NextRevDepends);};
- inline void operator ++() {operator ++(0);};
- inline bool end() const {return Owner == 0 || Dep == Owner->DepP?true:false;};
-
- // Comparison
- inline bool operator ==(const DepIterator &B) const {return Dep == B.Dep;};
- inline bool operator !=(const DepIterator &B) const {return Dep != B.Dep;};
-
- // Accessors
- inline Dependency *operator ->() {return Dep;};
- inline Dependency const *operator ->() const {return Dep;};
- inline Dependency &operator *() {return *Dep;};
- inline Dependency const &operator *() const {return *Dep;};
- inline operator Dependency *() {return Dep == Owner->DepP?0:Dep;};
- inline operator Dependency const *() const {return Dep == Owner->DepP?0:Dep;};
-
- inline const char *TargetVer() const {return Dep->Version == 0?0:Owner->StrP + Dep->Version;};
- inline PkgIterator TargetPkg() {return PkgIterator(*Owner,Owner->PkgP + Dep->Package);};
- inline PkgIterator SmartTargetPkg() {PkgIterator R(*Owner);SmartTargetPkg(R);return R;};
- inline VerIterator ParentVer() {return VerIterator(*Owner,Owner->VerP + Dep->ParentVer);};
- inline PkgIterator ParentPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[Dep->ParentVer].ParentPkg);};
- inline bool Reverse() {return Type == DepRev;};
- inline unsigned long Index() const {return Dep - Owner->DepP;};
- bool IsCritical();
- void GlobOr(DepIterator &Start,DepIterator &End);
- Version **AllTargets();
- bool SmartTargetPkg(PkgIterator &Result);
- const char *CompType();
- const char *DepType();
-
- inline DepIterator(pkgCache &Owner,Dependency *Trg,Version * = 0) :
- Dep(Trg), Type(DepVer), Owner(&Owner)
- {
- if (Dep == 0)
- Dep = Owner.DepP;
- };
- inline DepIterator(pkgCache &Owner,Dependency *Trg,Package *) :
- Dep(Trg), Type(DepRev), Owner(&Owner)
- {
- if (Dep == 0)
- Dep = Owner.DepP;
- };
- inline DepIterator() : Dep(0), Type(DepVer), Owner(0) {};
- };
-
- // Provides iterator
- class pkgCache::PrvIterator
- {
- Provides *Prv;
- enum {PrvVer, PrvPkg} Type;
- pkgCache *Owner;
-
- void _dummy();
-
- public:
-
- // Iteration
- void operator ++(int) {if (Prv != Owner->ProvideP) Prv = Owner->ProvideP +
- (Type == PrvVer?Prv->NextPkgProv:Prv->NextProvides);};
- inline void operator ++() {operator ++(0);};
- inline bool end() const {return Prv == Owner->ProvideP?true:false;};
-
- // Comparison
- inline bool operator ==(const PrvIterator &B) const {return Prv == B.Prv;};
- inline bool operator !=(const PrvIterator &B) const {return Prv != B.Prv;};
-
- // Accessors
- inline Provides *operator ->() {return Prv;};
- inline Provides const *operator ->() const {return Prv;};
- inline Provides &operator *() {return *Prv;};
- inline Provides const &operator *() const {return *Prv;};
- inline operator Provides *() {return Prv == Owner->ProvideP?0:Prv;};
- inline operator Provides const *() const {return Prv == Owner->ProvideP?0:Prv;};
-
- inline const char *Name() const {return Owner->StrP + Owner->PkgP[Prv->ParentPkg].Name;};
- inline const char *ProvideVersion() const {return Prv->ProvideVersion == 0?0:Owner->StrP + Prv->ProvideVersion;};
- inline PkgIterator ParentPkg() {return PkgIterator(*Owner,Owner->PkgP + Prv->ParentPkg);};
- inline VerIterator OwnerVer() {return VerIterator(*Owner,Owner->VerP + Prv->Version);};
- inline PkgIterator OwnerPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[Prv->Version].ParentPkg);};
- inline unsigned long Index() const {return Prv - Owner->ProvideP;};
-
- inline PrvIterator(pkgCache &Owner,Provides *Trg,Version *) :
- Prv(Trg), Type(PrvVer), Owner(&Owner)
- {
- if (Prv == 0)
- Prv = Owner.ProvideP;
- };
- inline PrvIterator(pkgCache &Owner,Provides *Trg,Package *) :
- Prv(Trg), Type(PrvPkg), Owner(&Owner)
- {
- if (Prv == 0)
- Prv = Owner.ProvideP;
- };
- };
-
- // Package file
- class pkgCache::PkgFileIterator
- {
- pkgCache *Owner;
- PackageFile *File;
-
- public:
-
- // Iteration
- void operator ++(int) {if (File!= Owner->PkgFileP) File = Owner->PkgFileP + File->NextFile;};
- inline void operator ++() {operator ++(0);};
- inline bool end() const {return File == Owner->PkgFileP?true:false;};
-
- // Comparison
- inline bool operator ==(const PkgFileIterator &B) const {return File == B.File;};
- inline bool operator !=(const PkgFileIterator &B) const {return File != B.File;};
-
- // Accessors
- inline PackageFile *operator ->() {return File;};
- inline PackageFile const *operator ->() const {return File;};
- inline PackageFile const &operator *() const {return *File;};
- inline operator PackageFile *() {return File == Owner->PkgFileP?0:File;};
- inline operator PackageFile const *() const {return File == Owner->PkgFileP?0:File;};
-
- inline const char *FileName() const {return File->FileName == 0?0:Owner->StrP + File->FileName;};
- inline const char *Archive() const {return File->Archive == 0?0:Owner->StrP + File->Archive;};
- inline const char *Component() const {return File->Component == 0?0:Owner->StrP + File->Component;};
- inline const char *Version() const {return File->Version == 0?0:Owner->StrP + File->Version;};
- inline const char *Origin() const {return File->Origin == 0?0:Owner->StrP + File->Origin;};
- inline const char *Label() const {return File->Origin == 0?0:Owner->StrP + File->Label;};
- inline const char *Architecture() const {return File->Origin == 0?0:Owner->StrP + File->Architecture;};
-
- inline unsigned long Index() const {return File - Owner->PkgFileP;};
-
- bool IsOk();
-
- // Constructors
- inline PkgFileIterator(pkgCache &Owner) : Owner(&Owner), File(Owner.PkgFileP + Owner.Head().FileList) {};
- inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Owner(&Owner), File(Trg) {};
- };
-
- // Version File
- class pkgCache::VerFileIterator
- {
- pkgCache *Owner;
- VerFile *FileP;
-
- public:
-
- // Iteration
- void operator ++(int) {if (FileP != Owner->VerFileP) FileP = Owner->VerFileP + FileP->NextFile;};
- inline void operator ++() {operator ++(0);};
- inline bool end() const {return FileP == Owner->VerFileP?true:false;};
-
- // Comparison
- inline bool operator ==(const VerFileIterator &B) const {return FileP == B.FileP;};
- inline bool operator !=(const VerFileIterator &B) const {return FileP != B.FileP;};
-
- // Accessors
- inline VerFile *operator ->() {return FileP;};
- inline VerFile const *operator ->() const {return FileP;};
- inline VerFile const &operator *() const {return *FileP;};
- inline operator VerFile *() {return FileP == Owner->VerFileP?0:FileP;};
- inline operator VerFile const *() const {return FileP == Owner->VerFileP?0:FileP;};
-
- inline PkgFileIterator File() const {return PkgFileIterator(*Owner,FileP->File + Owner->PkgFileP);};
- inline unsigned long Index() const {return FileP - Owner->VerFileP;};
-
- inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Owner(&Owner), FileP(Trg) {};
- };
-
- // Inlined Begin functions cant be in the class because of order problems
- inline pkgCache::VerIterator pkgCache::PkgIterator::VersionList() const
- {return VerIterator(*Owner,Owner->VerP + Pkg->VersionList);};
- inline pkgCache::VerIterator pkgCache::PkgIterator::CurrentVer() const
- {return VerIterator(*Owner,Owner->VerP + Pkg->CurrentVer);};
- inline pkgCache::VerIterator pkgCache::PkgIterator::TargetVer() const
- {return VerIterator(*Owner,Owner->VerP + Pkg->TargetVer);};
- inline pkgCache::DepIterator pkgCache::PkgIterator::RevDependsList() const
- {return DepIterator(*Owner,Owner->DepP + Pkg->RevDepends,Pkg);};
- inline pkgCache::PrvIterator pkgCache::PkgIterator::ProvidesList() const
- {return PrvIterator(*Owner,Owner->ProvideP + Pkg->ProvidesList,Pkg);};
- inline pkgCache::PrvIterator pkgCache::VerIterator::ProvidesList() const
- {return PrvIterator(*Owner,Owner->ProvideP + Ver->ProvidesList,Ver);};
- inline pkgCache::DepIterator pkgCache::VerIterator::DependsList() const
- {return DepIterator(*Owner,Owner->DepP + Ver->DependsList,Ver);};
- inline pkgCache::VerFileIterator pkgCache::VerIterator::FileList() const
- {return VerFileIterator(*Owner,Owner->VerFileP + Ver->FileList);};
-
- #endif
-