X-Git-Url: https://git.saurik.com/apt-legacy.git/blobdiff_plain/00ec24d01361c416e4f6c5e7d2698d9912f82ee2..acdafb440bd086fdb81bd61e03d5c89b057f0f6c:/apt-pkg/cacheiterators.h.orig

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+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+// $Id: cacheiterators.h,v 1.18.2.1 2004/05/08 22:44:27 mdz 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
+   
+   ##################################################################### */
+									/*}}}*/
+#ifndef PKGLIB_CACHEITERATORS_H
+#define PKGLIB_CACHEITERATORS_H
+
+
+// Package Iterator
+class pkgCache::PkgIterator
+{
+   friend class pkgCache;
+   Package *Pkg;
+   pkgCache *Owner;
+   long HashIndex;
+
+   protected:
+   
+   // This constructor is the 'begin' constructor, never use it.
+   inline PkgIterator(pkgCache &Owner) : Owner(&Owner), HashIndex(-1)
+   {
+      Pkg = Owner.PkgP;
+      operator ++(0);
+   };
+   
+   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 pkgCache *Cache() {return Owner;};
+   
+   inline const char *Name() const {return Pkg->Name == 0?0:Owner->StrP + Pkg->Name;};
+   inline const char *Display() const {return Pkg->Display == 0?0:Owner->StrP + Pkg->Display;};
+   inline const char *Section() const {return Pkg->Section == 0?0:Owner->StrP + Pkg->Section;};
+   inline bool Purge() const {return Pkg->CurrentState == pkgCache::State::Purge ||
+	 (Pkg->CurrentVer == 0 && Pkg->CurrentState == pkgCache::State::NotInstalled);};
+   inline VerIterator VersionList() 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,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 Owner == NULL || (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 pkgCache *Cache() {return Owner;};
+      
+   inline const char *VerStr() const {return Ver->VerStr == 0?0:Owner->StrP + Ver->VerStr;};
+   inline const char *Display() const {return Ver->Display == 0?0:Owner->StrP + Ver->Display;};
+   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 DescIterator DescriptionList() const;
+   DescIterator TranslatedDescription() const;
+   inline DepIterator DependsList() const;
+   inline PrvIterator ProvidesList() const;
+   inline VerFileIterator FileList() const;
+   inline unsigned long Index() const {return Ver - Owner->VerP;};
+   bool Downloadable() const;
+   inline const char *PriorityType() {return Owner->Priority(Ver->Priority);};
+   string RelStr();
+   
+   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;
+   };
+};
+
+// Description Iterator
+class pkgCache::DescIterator
+{
+   Description *Desc;
+   pkgCache *Owner;
+   
+   void _dummy();
+   
+   public:
+
+   // Iteration
+   void operator ++(int) {if (Desc != Owner->DescP) Desc = Owner->DescP + Desc->NextDesc;};
+   inline void operator ++() {operator ++(0);};
+   inline bool end() const {return Desc == Owner->DescP?true:false;};
+   inline void operator =(const DescIterator &B) {Desc = B.Desc; Owner = B.Owner;};
+   
+   // Comparison
+   inline bool operator ==(const DescIterator &B) const {return Desc == B.Desc;};
+   inline bool operator !=(const DescIterator &B) const {return Desc != B.Desc;};
+   int CompareDesc(const DescIterator &B) const;
+   
+   // Accessors
+   inline Description *operator ->() {return Desc;};
+   inline Description const *operator ->() const {return Desc;};
+   inline Description &operator *() {return *Desc;};
+   inline Description const &operator *() const {return *Desc;};
+   inline operator Description *() {return Desc == Owner->DescP?0:Desc;};
+   inline operator Description const *() const {return Desc == Owner->DescP?0:Desc;};
+   inline pkgCache *Cache() {return Owner;};
+      
+   inline const char *LanguageCode() const {return Owner->StrP + Desc->language_code;};
+   inline const char *md5() const {return Owner->StrP + Desc->md5sum;};
+   inline DescFileIterator FileList() const;
+   inline unsigned long Index() const {return Desc - Owner->DescP;};
+
+   inline DescIterator() : Desc(0), Owner(0) {};   
+   inline DescIterator(pkgCache &Owner,Description *Trg = 0) : Desc(Trg), 
+              Owner(&Owner) 
+   { 
+      if (Desc == 0)
+	 Desc = Owner.DescP;
+   };
+};
+
+// 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 pkgCache *Cache() {return Owner;};
+   
+   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,0);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);
+   inline const char *CompType() {return Owner->CompType(Dep->CompareOp);};
+   inline const char *DepType() {return Owner->DepType(Dep->Type);};
+   
+   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 Owner == 0 || 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 pkgCache *Cache() {return Owner;};
+
+   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() : Prv(0), Type(PrvVer), Owner(0)  {};
+
+   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 pkgCache *Cache() {return Owner;};
+
+   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->Label == 0?0:Owner->StrP + File->Label;};
+   inline const char *Site() const {return File->Site == 0?0:Owner->StrP + File->Site;};
+   inline const char *Architecture() const {return File->Architecture == 0?0:Owner->StrP + File->Architecture;};
+   inline const char *IndexType() const {return File->IndexType == 0?0:Owner->StrP + File->IndexType;};
+
+   inline unsigned long Index() const {return File - Owner->PkgFileP;};
+
+   bool IsOk();
+   string RelStr();
+   
+   // Constructors
+   inline PkgFileIterator() : Owner(0), File(0) {};
+   inline PkgFileIterator(pkgCache &Owner) : Owner(&Owner), File(Owner.PkgFileP) {};
+   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 pkgCache *Cache() {return Owner;};
+  
+   inline PkgFileIterator File() const {return PkgFileIterator(*Owner,FileP->File + Owner->PkgFileP);};
+   inline unsigned long Index() const {return FileP - Owner->VerFileP;};
+      
+   inline VerFileIterator() : Owner(0), FileP(0) {};
+   inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Owner(&Owner), FileP(Trg) {};
+};
+
+// Description File 
+class pkgCache::DescFileIterator
+{
+   pkgCache *Owner;
+   DescFile *FileP;
+
+   public:
+
+   // Iteration
+   void operator ++(int) {if (FileP != Owner->DescFileP) FileP = Owner->DescFileP + FileP->NextFile;};
+   inline void operator ++() {operator ++(0);};
+   inline bool end() const {return FileP == Owner->DescFileP?true:false;};
+
+   // Comparison
+   inline bool operator ==(const DescFileIterator &B) const {return FileP == B.FileP;};
+   inline bool operator !=(const DescFileIterator &B) const {return FileP != B.FileP;};
+			   
+   // Accessors
+   inline DescFile *operator ->() {return FileP;};
+   inline DescFile const *operator ->() const {return FileP;};
+   inline DescFile const &operator *() const {return *FileP;};
+   inline operator DescFile *() {return FileP == Owner->DescFileP?0:FileP;};
+   inline operator DescFile const *() const {return FileP == Owner->DescFileP?0:FileP;};
+   inline pkgCache *Cache() {return Owner;};
+  
+   inline PkgFileIterator File() const {return PkgFileIterator(*Owner,FileP->File + Owner->PkgFileP);};
+   inline unsigned long Index() const {return FileP - Owner->DescFileP;};
+      
+   inline DescFileIterator() : Owner(0), FileP(0) {};
+   inline DescFileIterator(pkgCache &Owner,DescFile *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::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::DescIterator pkgCache::VerIterator::DescriptionList() const
+       {return DescIterator(*Owner,Owner->DescP + Ver->DescriptionList);};
+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);};
+inline pkgCache::DescFileIterator pkgCache::DescIterator::FileList() const
+       {return DescFileIterator(*Owner,Owner->DescFileP + Desc->FileList);};
+
+#endif