* apt-pkg/pkgcache.cc:

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

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 28e062f3c502038a814d9475f58b9cf1c122b076..e5b23a81880a78ca2b94b80500329bcecd8a7c6c 100644 (file)
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -29,10 +29,12 @@
                                                                        /*}}}*/
 #ifndef PKGLIB_CACHEITERATORS_H
 #define PKGLIB_CACHEITERATORS_H
+#include<iterator>
 // abstract Iterator template                                          /*{{{*/
 /* This template provides the very basic iterator methods we
    need to have for doing some walk-over-the-cache magic */
-template<typename Str, typename Itr> class pkgCache::Iterator {
+template<typename Str, typename Itr> class pkgCache::Iterator :
+                       public std::iterator<std::forward_iterator_tag, Str> {
        protected:
        Str *S;
        pkgCache *Owner;
@@ -62,8 +64,9 @@ template<typename Str, typename Itr> class pkgCache::Iterator {
        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() {return Owner;};
+       inline pkgCache *Cache() const {return Owner;};
 
        // Mixed stuff
        inline void operator =(const Itr &B) {S = B.S; Owner = B.Owner;};
@@ -101,6 +104,11 @@ class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
        inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;};
        inline PkgIterator PackageList() const;
        PkgIterator FindPkg(string Arch = "any");
+       /** \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);
 
        // Constructors