X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/1aa9b2974d33015102224ffb738b2e8e0a4bcb42..f7feb041e8d8dac5fac3c6cd44c8108e12ea4cd6:/apt-pkg/cacheiterators.h?ds=sidebyside

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index f0b40dbb5..2fdf8404d 100644
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -29,7 +29,15 @@
 									/*}}}*/
 #ifndef PKGLIB_CACHEITERATORS_H
 #define PKGLIB_CACHEITERATORS_H
+#include<apt-pkg/pkgcache.h>
+#include<apt-pkg/macros.h>
+
 #include<iterator>
+#include <iosfwd>
+#include <string>
+
+#include<string.h>
+
 // abstract Iterator template						/*{{{*/
 /* This template provides the very basic iterator methods we
    need to have for doing some walk-over-the-cache magic */
@@ -43,7 +51,7 @@ template<typename Str, typename Itr> class pkgCache::Iterator :
 	 *  The implementation of this method should be pretty short
 	 *  as it will only return the Pointer into the mmap stored
 	 *  in the owner but the name of this pointer is different for
-	 *  each stucture and we want to abstract here at least for the
+	 *  each structure and we want to abstract here at least for the
 	 *  basic methods from the actual structure.
 	 *  \return Pointer to the first structure of this type
 	 */
@@ -52,30 +60,36 @@ template<typename Str, typename Itr> class pkgCache::Iterator :
 	public:
 	// Iteration
 	virtual void operator ++(int) = 0;
-	virtual void operator ++() = 0; // Should be {operator ++(0);};
-	inline bool end() const {return Owner == 0 || S == OwnerPointer();};
+	virtual void operator ++() = 0; // Should be {operator ++(0);}
+	inline bool end() const {return Owner == 0 || S == OwnerPointer();}
 
 	// Comparison
-	inline bool operator ==(const Itr &B) const {return S == B.S;};
-	inline bool operator !=(const Itr &B) const {return S != B.S;};
+	inline bool operator ==(const Itr &B) const {return S == B.S;}
+	inline bool operator !=(const Itr &B) const {return S != B.S;}
 
 	// Accessors
-	inline Str *operator ->() {return S;};
-	inline Str const *operator ->() const {return S;};
-	inline operator Str *() {return S == OwnerPointer() ? 0 : S;};
-	inline operator Str const *() const {return S == OwnerPointer() ? 0 : S;};
-	inline Str &operator *() {return *S;};
-	inline Str const &operator *() const {return *S;};
-	inline pkgCache *Cache() const {return Owner;};
+	inline Str *operator ->() {return S;}
+	inline Str const *operator ->() const {return S;}
+	inline operator Str *() {return S == OwnerPointer() ? 0 : S;}
+	inline operator Str const *() const {return S == OwnerPointer() ? 0 : S;}
+	inline Str &operator *() {return *S;}
+	inline Str const &operator *() const {return *S;}
+	inline pkgCache *Cache() const {return Owner;}
 
 	// Mixed stuff
-	inline void operator =(const Itr &B) {S = B.S; Owner = B.Owner;};
-	inline bool IsGood() const { return S && Owner && ! end();};
-	inline unsigned long Index() const {return S - OwnerPointer();};
+	inline void operator =(const Itr &B) {S = B.S; Owner = B.Owner;}
+	inline bool IsGood() const { return S && Owner && ! end();}
+	inline unsigned long Index() const {return S - OwnerPointer();}
+
+	void ReMap(void const * const oldMap, void const * const newMap) {
+		if (Owner == 0 || S == 0)
+			return;
+		S += (Str const * const)(newMap) - (Str const * const)(oldMap);
+	}
 
 	// Constructors - look out for the variable assigning
-	inline Iterator() : S(0), Owner(0) {};
-	inline Iterator(pkgCache &Owner,Str *T = 0) : S(T), Owner(&Owner) {};
+	inline Iterator() : S(0), Owner(0) {}
+	inline Iterator(pkgCache &Owner,Str *T = 0) : S(T), Owner(&Owner) {}
 };
 									/*}}}*/
 // Group Iterator							/*{{{*/
@@ -88,35 +102,38 @@ class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
 
 	protected:
 	inline Group* OwnerPointer() const {
-		return Owner->GrpP;
-	};
+		return (Owner != 0) ? Owner->GrpP : 0;
+	}
 
 	public:
 	// This constructor is the 'begin' constructor, never use it.
 	inline GrpIterator(pkgCache &Owner) : Iterator<Group, GrpIterator>(Owner), HashIndex(-1) {
 		S = OwnerPointer();
 		operator ++(0);
-	};
+	}
 
 	virtual void operator ++(int);
-	virtual void operator ++() {operator ++(0);};
+	virtual void operator ++() {operator ++(0);}
 
-	inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;};
+	inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;}
 	inline PkgIterator PackageList() const;
-	PkgIterator FindPkg(string Arch = "any");
+	PkgIterator FindPkg(std::string Arch = "any") const;
 	/** \brief find the package with the "best" architecture
 
 	    The best architecture is either the "native" or the first
-	    in the list of Architectures which is not an end-Pointer */
-	PkgIterator FindPreferredPkg();
-	PkgIterator NextPkg(PkgIterator const &Pkg);
+	    in the list of Architectures which is not an end-Pointer
+
+	    \param PreferNonVirtual tries to respond with a non-virtual package
+		   and only if this fails returns the best virtual package */
+	PkgIterator FindPreferredPkg(bool const &PreferNonVirtual = true) const;
+	PkgIterator NextPkg(PkgIterator const &Pkg) const;
 
 	// Constructors
 	inline GrpIterator(pkgCache &Owner, Group *Trg) : Iterator<Group, GrpIterator>(Owner, Trg), HashIndex(0) {
 		if (S == 0)
 			S = OwnerPointer();
-	};
-	inline GrpIterator() : Iterator<Group, GrpIterator>(), HashIndex(0) {};
+	}
+	inline GrpIterator() : Iterator<Group, GrpIterator>(), HashIndex(0) {}
 
 };
 									/*}}}*/
@@ -126,36 +143,36 @@ class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 
 	protected:
 	inline Package* OwnerPointer() const {
-		return Owner->PkgP;
-	};
+		return (Owner != 0) ? Owner->PkgP : 0;
+	}
 
 	public:
 	// This constructor is the 'begin' constructor, never use it.
 	inline PkgIterator(pkgCache &Owner) : Iterator<Package, PkgIterator>(Owner), HashIndex(-1) {
 		S = OwnerPointer();
 		operator ++(0);
-	};
+	}
 
 	virtual void operator ++(int);
-	virtual void operator ++() {operator ++(0);};
+	virtual void operator ++() {operator ++(0);}
 
 	enum OkState {NeedsNothing,NeedsUnpack,NeedsConfigure};
 
 	// Accessors
-	inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;};
-	inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;};
+	inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;}
+	inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;}
 	inline bool Purge() const {return S->CurrentState == pkgCache::State::Purge ||
-		(S->CurrentVer == 0 && S->CurrentState == pkgCache::State::NotInstalled);};
-	inline const char *Arch() const {return S->Arch == 0?0:Owner->StrP + S->Arch;};
-	inline GrpIterator Group() const { return GrpIterator(*Owner, Owner->GrpP + S->Group);};
-
-	inline VerIterator VersionList() const;
-	inline VerIterator CurrentVer() const;
-	inline DepIterator RevDependsList() const;
-	inline PrvIterator ProvidesList() const;
-	OkState State() const;
-	const char *CandVersion() const;
-	const char *CurVersion() const;
+		(S->CurrentVer == 0 && S->CurrentState == pkgCache::State::NotInstalled);}
+	inline const char *Arch() const {return S->Arch == 0?0:Owner->StrP + S->Arch;}
+	inline APT_PURE GrpIterator Group() const { return GrpIterator(*Owner, Owner->GrpP + S->Group);}
+
+	inline VerIterator VersionList() const APT_PURE;
+	inline VerIterator CurrentVer() const APT_PURE;
+	inline DepIterator RevDependsList() const APT_PURE;
+	inline PrvIterator ProvidesList() const APT_PURE;
+	OkState State() const APT_PURE;
+	const char *CandVersion() const APT_PURE;
+	const char *CurVersion() const APT_PURE;
 
 	//Nice printable representation
 	friend std::ostream& operator <<(std::ostream& out, PkgIterator i);
@@ -165,39 +182,41 @@ class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 	inline PkgIterator(pkgCache &Owner,Package *Trg) : Iterator<Package, PkgIterator>(Owner, Trg), HashIndex(0) {
 		if (S == 0)
 			S = OwnerPointer();
-	};
-	inline PkgIterator() : Iterator<Package, PkgIterator>(), HashIndex(0) {};
+	}
+	inline PkgIterator() : Iterator<Package, PkgIterator>(), HashIndex(0) {}
 };
 									/*}}}*/
 // Version Iterator							/*{{{*/
 class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
 	protected:
 	inline Version* OwnerPointer() const {
-		return Owner->VerP;
-	};
+		return (Owner != 0) ? Owner->VerP : 0;
+	}
 
 	public:
 	// Iteration
-	void operator ++(int) {if (S != Owner->VerP) S = Owner->VerP + S->NextVer;};
-	inline void operator ++() {operator ++(0);};
+	void operator ++(int) {if (S != Owner->VerP) S = Owner->VerP + S->NextVer;}
+	inline void operator ++() {operator ++(0);}
 
 	// Comparison
 	int CompareVer(const VerIterator &B) const;
+	/** \brief compares two version and returns if they are similar
+
+	    This method should be used to identify if two pseudo versions are
+	    referring to the same "real" version */
+	inline bool SimilarVer(const VerIterator &B) const {
+		return (B.end() == false && S->Hash == B->Hash && strcmp(VerStr(), B.VerStr()) == 0);
+	}
 
 	// Accessors
-	inline const char *VerStr() const {return S->VerStr == 0?0:Owner->StrP + S->VerStr;};
-	inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;};
+	inline const char *VerStr() const {return S->VerStr == 0?0:Owner->StrP + S->VerStr;}
+	inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;}
 	inline const char *Arch() const {
-		if(S->MultiArch == pkgCache::Version::All)
+		if ((S->MultiArch & pkgCache::Version::All) == pkgCache::Version::All)
 			return "all";
 		return S->ParentPkg == 0?0:Owner->StrP + ParentPkg()->Arch;
-	};
-	inline const char *Arch(bool const pseudo) const {
-		if(pseudo == false)
-			return Arch();
-		return S->ParentPkg == 0?0:Owner->StrP + ParentPkg()->Arch;
-	};
-	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);};
+	}
+	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);}
 
 	inline DescIterator DescriptionList() const;
 	DescIterator TranslatedDescription() const;
@@ -205,45 +224,45 @@ class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
 	inline PrvIterator ProvidesList() const;
 	inline VerFileIterator FileList() const;
 	bool Downloadable() const;
-	inline const char *PriorityType() const {return Owner->Priority(S->Priority);};
-	string RelStr() const;
+	inline const char *PriorityType() const {return Owner->Priority(S->Priority);}
+	const char *MultiArchType() const APT_PURE;
+	std::string RelStr() const;
 
 	bool Automatic() const;
-	bool Pseudo() const;
 	VerFileIterator NewestFile() const;
 
 	inline VerIterator(pkgCache &Owner,Version *Trg = 0) : Iterator<Version, VerIterator>(Owner, Trg) {
 		if (S == 0)
 			S = OwnerPointer();
-	};
-	inline VerIterator() : Iterator<Version, VerIterator>() {};
+	}
+	inline VerIterator() : Iterator<Version, VerIterator>() {}
 };
 									/*}}}*/
 // Description Iterator							/*{{{*/
 class pkgCache::DescIterator : public Iterator<Description, DescIterator> {
 	protected:
 	inline Description* OwnerPointer() const {
-		return Owner->DescP;
-	};
+		return (Owner != 0) ? Owner->DescP : 0;
+	}
 
 	public:
 	// Iteration
-	void operator ++(int) {if (S != Owner->DescP) S = Owner->DescP + S->NextDesc;};
-	inline void operator ++() {operator ++(0);};
+	void operator ++(int) {if (S != Owner->DescP) S = Owner->DescP + S->NextDesc;}
+	inline void operator ++() {operator ++(0);}
 
 	// Comparison
 	int CompareDesc(const DescIterator &B) const;
 
 	// Accessors
-	inline const char *LanguageCode() const {return Owner->StrP + S->language_code;};
-	inline const char *md5() const {return Owner->StrP + S->md5sum;};
+	inline const char *LanguageCode() const {return Owner->StrP + S->language_code;}
+	inline const char *md5() const {return Owner->StrP + S->md5sum;}
 	inline DescFileIterator FileList() const;
 
-	inline DescIterator() : Iterator<Description, DescIterator>() {};
+	inline DescIterator() : Iterator<Description, DescIterator>() {}
 	inline DescIterator(pkgCache &Owner,Description *Trg = 0) : Iterator<Description, DescIterator>(Owner, Trg) {
 		if (S == 0)
 			S = Owner.DescP;
-	};
+	}
 };
 									/*}}}*/
 // Dependency iterator							/*{{{*/
@@ -252,40 +271,49 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 
 	protected:
 	inline Dependency* OwnerPointer() const {
-		return Owner->DepP;
-	};
+		return (Owner != 0) ? Owner->DepP : 0;
+	}
 
 	public:
 	// Iteration
 	void operator ++(int) {if (S != Owner->DepP) S = Owner->DepP +
-		(Type == DepVer ? S->NextDepends : S->NextRevDepends);};
-	inline void operator ++() {operator ++(0);};
+		(Type == DepVer ? S->NextDepends : S->NextRevDepends);}
+	inline void operator ++() {operator ++(0);}
 
 	// Accessors
-	inline const char *TargetVer() const {return S->Version == 0?0:Owner->StrP + S->Version;};
-	inline PkgIterator TargetPkg() {return PkgIterator(*Owner,Owner->PkgP + S->Package);};
-	inline PkgIterator SmartTargetPkg() {PkgIterator R(*Owner,0);SmartTargetPkg(R);return R;};
-	inline VerIterator ParentVer() {return VerIterator(*Owner,Owner->VerP + S->ParentVer);};
-	inline PkgIterator ParentPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->ParentVer].ParentPkg);};
-	inline bool Reverse() {return Type == DepRev;};
-	bool IsCritical();
+	inline const char *TargetVer() const {return S->Version == 0?0:Owner->StrP + S->Version;}
+	inline PkgIterator TargetPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->Package);}
+	inline PkgIterator SmartTargetPkg() const {PkgIterator R(*Owner,0);SmartTargetPkg(R);return R;}
+	inline VerIterator ParentVer() const {return VerIterator(*Owner,Owner->VerP + S->ParentVer);}
+	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->ParentVer].ParentPkg);}
+	inline bool Reverse() const {return Type == DepRev;}
+	bool IsCritical() const APT_PURE;
+	bool IsNegative() const APT_PURE;
+	bool IsIgnorable(PrvIterator const &Prv) const APT_PURE;
+	bool IsIgnorable(PkgIterator const &Pkg) const APT_PURE;
+	bool IsMultiArchImplicit() const APT_PURE;
+	bool IsSatisfied(VerIterator const &Ver) const APT_PURE;
+	bool IsSatisfied(PrvIterator const &Prv) const APT_PURE;
 	void GlobOr(DepIterator &Start,DepIterator &End);
-	Version **AllTargets();
-	bool SmartTargetPkg(PkgIterator &Result);
-	inline const char *CompType() {return Owner->CompType(S->CompareOp);};
-	inline const char *DepType() {return Owner->DepType(S->Type);};
+	Version **AllTargets() const;
+	bool SmartTargetPkg(PkgIterator &Result) const;
+	inline const char *CompType() const {return Owner->CompType(S->CompareOp);}
+	inline const char *DepType() const {return Owner->DepType(S->Type);}
+
+	//Nice printable representation
+	friend std::ostream& operator <<(std::ostream& out, DepIterator D);
 
 	inline DepIterator(pkgCache &Owner, Dependency *Trg, Version* = 0) :
 		Iterator<Dependency, DepIterator>(Owner, Trg), Type(DepVer) {
 		if (S == 0)
 			S = Owner.DepP;
-	};
+	}
 	inline DepIterator(pkgCache &Owner, Dependency *Trg, Package*) :
 		Iterator<Dependency, DepIterator>(Owner, Trg), Type(DepRev) {
 		if (S == 0)
 			S = Owner.DepP;
-	};
-	inline DepIterator() : Iterator<Dependency, DepIterator>(), Type(DepVer) {};
+	}
+	inline DepIterator() : Iterator<Dependency, DepIterator>(), Type(DepVer) {}
 };
 									/*}}}*/
 // Provides iterator							/*{{{*/
@@ -294,127 +322,128 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 
 	protected:
 	inline Provides* OwnerPointer() const {
-		return Owner->ProvideP;
-	};
+		return (Owner != 0) ? Owner->ProvideP : 0;
+	}
 
 	public:
 	// Iteration
 	void operator ++(int) {if (S != Owner->ProvideP) S = Owner->ProvideP +
-		(Type == PrvVer?S->NextPkgProv:S->NextProvides);};
-	inline void operator ++() {operator ++(0);};
+		(Type == PrvVer?S->NextPkgProv:S->NextProvides);}
+	inline void operator ++() {operator ++(0);}
 
 	// Accessors
-	inline const char *Name() const {return Owner->StrP + Owner->PkgP[S->ParentPkg].Name;};
-	inline const char *ProvideVersion() const {return S->ProvideVersion == 0?0:Owner->StrP + S->ProvideVersion;};
-	inline PkgIterator ParentPkg() {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);};
-	inline VerIterator OwnerVer() {return VerIterator(*Owner,Owner->VerP + S->Version);};
-	inline PkgIterator OwnerPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->Version].ParentPkg);};
+	inline const char *Name() const {return Owner->StrP + Owner->PkgP[S->ParentPkg].Name;}
+	inline const char *ProvideVersion() const {return S->ProvideVersion == 0?0:Owner->StrP + S->ProvideVersion;}
+	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);}
+	inline VerIterator OwnerVer() const {return VerIterator(*Owner,Owner->VerP + S->Version);}
+	inline PkgIterator OwnerPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->Version].ParentPkg);}
 
-	inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {};
+	bool IsMultiArchImplicit() const APT_PURE;
 
+	inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {}
 	inline PrvIterator(pkgCache &Owner, Provides *Trg, Version*) :
 		Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvVer) {
 		if (S == 0)
 			S = Owner.ProvideP;
-	};
+	}
 	inline PrvIterator(pkgCache &Owner, Provides *Trg, Package*) :
 		Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvPkg) {
 		if (S == 0)
 			S = Owner.ProvideP;
-	};
+	}
 };
 									/*}}}*/
 // Package file								/*{{{*/
 class pkgCache::PkgFileIterator : public Iterator<PackageFile, PkgFileIterator> {
 	protected:
 	inline PackageFile* OwnerPointer() const {
-		return Owner->PkgFileP;
-	};
+		return (Owner != 0) ? Owner->PkgFileP : 0;
+	}
 
 	public:
 	// Iteration
-	void operator ++(int) {if (S != Owner->PkgFileP) S = Owner->PkgFileP + S->NextFile;};
-	inline void operator ++() {operator ++(0);};
+	void operator ++(int) {if (S != Owner->PkgFileP) S = Owner->PkgFileP + S->NextFile;}
+	inline void operator ++() {operator ++(0);}
 
 	// Accessors
-	inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;};
-	inline const char *Archive() const {return S->Archive == 0?0:Owner->StrP + S->Archive;};
-	inline const char *Component() const {return S->Component == 0?0:Owner->StrP + S->Component;};
-	inline const char *Version() const {return S->Version == 0?0:Owner->StrP + S->Version;};
-	inline const char *Origin() const {return S->Origin == 0?0:Owner->StrP + S->Origin;};
-	inline const char *Codename() const {return S->Codename ==0?0:Owner->StrP + S->Codename;};
-	inline const char *Label() const {return S->Label == 0?0:Owner->StrP + S->Label;};
-	inline const char *Site() const {return S->Site == 0?0:Owner->StrP + S->Site;};
-	inline const char *Architecture() const {return S->Architecture == 0?0:Owner->StrP + S->Architecture;};
-	inline const char *IndexType() const {return S->IndexType == 0?0:Owner->StrP + S->IndexType;};
+	inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;}
+	inline const char *Archive() const {return S->Archive == 0?0:Owner->StrP + S->Archive;}
+	inline const char *Component() const {return S->Component == 0?0:Owner->StrP + S->Component;}
+	inline const char *Version() const {return S->Version == 0?0:Owner->StrP + S->Version;}
+	inline const char *Origin() const {return S->Origin == 0?0:Owner->StrP + S->Origin;}
+	inline const char *Codename() const {return S->Codename ==0?0:Owner->StrP + S->Codename;}
+	inline const char *Label() const {return S->Label == 0?0:Owner->StrP + S->Label;}
+	inline const char *Site() const {return S->Site == 0?0:Owner->StrP + S->Site;}
+	inline const char *Architecture() const {return S->Architecture == 0?0:Owner->StrP + S->Architecture;}
+	inline const char *IndexType() const {return S->IndexType == 0?0:Owner->StrP + S->IndexType;}
 
 	bool IsOk();
-	string RelStr();
+	std::string RelStr();
 
 	// Constructors
-	inline PkgFileIterator() : Iterator<PackageFile, PkgFileIterator>() {};
-	inline PkgFileIterator(pkgCache &Owner) : Iterator<PackageFile, PkgFileIterator>(Owner, Owner.PkgFileP) {};
-	inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Iterator<PackageFile, PkgFileIterator>(Owner, Trg) {};
+	inline PkgFileIterator() : Iterator<PackageFile, PkgFileIterator>() {}
+	inline PkgFileIterator(pkgCache &Owner) : Iterator<PackageFile, PkgFileIterator>(Owner, Owner.PkgFileP) {}
+	inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Iterator<PackageFile, PkgFileIterator>(Owner, Trg) {}
 };
 									/*}}}*/
 // Version File								/*{{{*/
 class pkgCache::VerFileIterator : public pkgCache::Iterator<VerFile, VerFileIterator> {
 	protected:
 	inline VerFile* OwnerPointer() const {
-		return Owner->VerFileP;
-	};
+		return (Owner != 0) ? Owner->VerFileP : 0;
+	}
 
 	public:
 	// Iteration
-	void operator ++(int) {if (S != Owner->VerFileP) S = Owner->VerFileP + S->NextFile;};
-	inline void operator ++() {operator ++(0);};
+	void operator ++(int) {if (S != Owner->VerFileP) S = Owner->VerFileP + S->NextFile;}
+	inline void operator ++() {operator ++(0);}
 
 	// Accessors
-	inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);};
+	inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);}
 
-	inline VerFileIterator() : Iterator<VerFile, VerFileIterator>() {};
-	inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Iterator<VerFile, VerFileIterator>(Owner, Trg) {};
+	inline VerFileIterator() : Iterator<VerFile, VerFileIterator>() {}
+	inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Iterator<VerFile, VerFileIterator>(Owner, Trg) {}
 };
 									/*}}}*/
 // Description File							/*{{{*/
 class pkgCache::DescFileIterator : public Iterator<DescFile, DescFileIterator> {
 	protected:
 	inline DescFile* OwnerPointer() const {
-		return Owner->DescFileP;
-	};
+		return (Owner != 0) ? Owner->DescFileP : 0;
+	}
 
 	public:
 	// Iteration
-	void operator ++(int) {if (S != Owner->DescFileP) S = Owner->DescFileP + S->NextFile;};
-	inline void operator ++() {operator ++(0);};
+	void operator ++(int) {if (S != Owner->DescFileP) S = Owner->DescFileP + S->NextFile;}
+	inline void operator ++() {operator ++(0);}
 
 	// Accessors
-	inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);};
+	inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);}
 
-	inline DescFileIterator() : Iterator<DescFile, DescFileIterator>() {};
-	inline DescFileIterator(pkgCache &Owner,DescFile *Trg) : Iterator<DescFile, DescFileIterator>(Owner, Trg) {};
+	inline DescFileIterator() : Iterator<DescFile, DescFileIterator>() {}
+	inline DescFileIterator(pkgCache &Owner,DescFile *Trg) : Iterator<DescFile, DescFileIterator>(Owner, Trg) {}
 };
 									/*}}}*/
-// Inlined Begin functions cant be in the class because of order problems /*{{{*/
+// Inlined Begin functions can't be in the class because of order problems /*{{{*/
 inline pkgCache::PkgIterator pkgCache::GrpIterator::PackageList() const
-       {return PkgIterator(*Owner,Owner->PkgP + S->FirstPackage);};
+       {return PkgIterator(*Owner,Owner->PkgP + S->FirstPackage);}
 inline pkgCache::VerIterator pkgCache::PkgIterator::VersionList() const
-       {return VerIterator(*Owner,Owner->VerP + S->VersionList);};
+       {return VerIterator(*Owner,Owner->VerP + S->VersionList);}
 inline pkgCache::VerIterator pkgCache::PkgIterator::CurrentVer() const
-       {return VerIterator(*Owner,Owner->VerP + S->CurrentVer);};
+       {return VerIterator(*Owner,Owner->VerP + S->CurrentVer);}
 inline pkgCache::DepIterator pkgCache::PkgIterator::RevDependsList() const
-       {return DepIterator(*Owner,Owner->DepP + S->RevDepends,S);};
+       {return DepIterator(*Owner,Owner->DepP + S->RevDepends,S);}
 inline pkgCache::PrvIterator pkgCache::PkgIterator::ProvidesList() const
-       {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);};
+       {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);}
 inline pkgCache::DescIterator pkgCache::VerIterator::DescriptionList() const
-       {return DescIterator(*Owner,Owner->DescP + S->DescriptionList);};
+       {return DescIterator(*Owner,Owner->DescP + S->DescriptionList);}
 inline pkgCache::PrvIterator pkgCache::VerIterator::ProvidesList() const
-       {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);};
+       {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);}
 inline pkgCache::DepIterator pkgCache::VerIterator::DependsList() const
-       {return DepIterator(*Owner,Owner->DepP + S->DependsList,S);};
+       {return DepIterator(*Owner,Owner->DepP + S->DependsList,S);}
 inline pkgCache::VerFileIterator pkgCache::VerIterator::FileList() const
-       {return VerFileIterator(*Owner,Owner->VerFileP + S->FileList);};
+       {return VerFileIterator(*Owner,Owner->VerFileP + S->FileList);}
 inline pkgCache::DescFileIterator pkgCache::DescIterator::FileList() const
-       {return DescFileIterator(*Owner,Owner->DescFileP + S->FileList);};
+       {return DescFileIterator(*Owner,Owner->DescFileP + S->FileList);}
 									/*}}}*/
 #endif