merged from lp:~donkult/apt/sid

[apt.git] / apt-pkg / cacheiterators.h

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 1dcc345329aa3a88922ee657019a039db0ee42f6..449d4b4412f1d2f673d6ea6cb469be73959348b0 100644 (file)
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -96,7 +96,7 @@ class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
 
        protected:
        inline Group* OwnerPointer() const {
-               return Owner->GrpP;
+               return (Owner != 0) ? Owner->GrpP : 0;
        };
 
        public:
@@ -115,8 +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
@@ -134,7 +137,7 @@ class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 
        protected:
        inline Package* OwnerPointer() const {
-               return Owner->PkgP;
+               return (Owner != 0) ? Owner->PkgP : 0;
        };
 
        public:
@@ -181,7 +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:
@@ -238,7 +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:
@@ -267,7 +270,7 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 
        protected:
        inline Dependency* OwnerPointer() const {
-               return Owner->DepP;
+               return (Owner != 0) ? Owner->DepP : 0;
        };
 
        public:
@@ -290,6 +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)
@@ -309,7 +315,7 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 
        protected:
        inline Provides* OwnerPointer() const {
-               return Owner->ProvideP;
+               return (Owner != 0) ? Owner->ProvideP : 0;
        };
 
        public:
@@ -343,7 +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:
@@ -376,7 +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:
@@ -395,7 +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: