X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/7ea4af9da25a802516461434b12a61e21743f960..3c54407f8783d5e27363eabf41dbc3d031526ffe:/apt-pkg/cacheiterators.h

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index dfe5707e1..449d4b441 100644
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -75,6 +75,12 @@ template<typename Str, typename Itr> class pkgCache::Iterator :
 	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*)(newMap) - (Str*)(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) {};
@@ -90,7 +96,7 @@ class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
 
 	protected:
 	inline Group* OwnerPointer() const {
-		return Owner->GrpP;
+		return (Owner != 0) ? Owner->GrpP : 0;
 	};
 
 	public:
@@ -109,8 +115,11 @@ class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
 	/** \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() const;
+	    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
@@ -128,7 +137,7 @@ class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 
 	protected:
 	inline Package* OwnerPointer() const {
-		return Owner->PkgP;
+		return (Owner != 0) ? Owner->PkgP : 0;
 	};
 
 	public:
@@ -175,7 +184,7 @@ class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
 	protected:
 	inline Version* OwnerPointer() const {
-		return Owner->VerP;
+		return (Owner != 0) ? Owner->VerP : 0;
 	};
 
 	public:
@@ -232,7 +241,7 @@ class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
 class pkgCache::DescIterator : public Iterator<Description, DescIterator> {
 	protected:
 	inline Description* OwnerPointer() const {
-		return Owner->DescP;
+		return (Owner != 0) ? Owner->DescP : 0;
 	};
 
 	public:
@@ -261,7 +270,7 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 
 	protected:
 	inline Dependency* OwnerPointer() const {
-		return Owner->DepP;
+		return (Owner != 0) ? Owner->DepP : 0;
 	};
 
 	public:
@@ -284,6 +293,9 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 	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)
@@ -303,7 +315,7 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 
 	protected:
 	inline Provides* OwnerPointer() const {
-		return Owner->ProvideP;
+		return (Owner != 0) ? Owner->ProvideP : 0;
 	};
 
 	public:
@@ -337,7 +349,7 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 class pkgCache::PkgFileIterator : public Iterator<PackageFile, PkgFileIterator> {
 	protected:
 	inline PackageFile* OwnerPointer() const {
-		return Owner->PkgFileP;
+		return (Owner != 0) ? Owner->PkgFileP : 0;
 	};
 
 	public:
@@ -370,7 +382,7 @@ class pkgCache::PkgFileIterator : public Iterator<PackageFile, PkgFileIterator>
 class pkgCache::VerFileIterator : public pkgCache::Iterator<VerFile, VerFileIterator> {
 	protected:
 	inline VerFile* OwnerPointer() const {
-		return Owner->VerFileP;
+		return (Owner != 0) ? Owner->VerFileP : 0;
 	};
 
 	public:
@@ -389,7 +401,7 @@ class pkgCache::VerFileIterator : public pkgCache::Iterator<VerFile, VerFileIter
 class pkgCache::DescFileIterator : public Iterator<DescFile, DescFileIterator> {
 	protected:
 	inline DescFile* OwnerPointer() const {
-		return Owner->DescFileP;
+		return (Owner != 0) ? Owner->DescFileP : 0;
 	};
 
 	public: