add new pid_t ExecFork(std::set<int> KeepFDs) to get rid of the super ugly APT::Keep...

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

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index dfe5707e10d292973bd0b17d7cff8e6757740941..886d84838ab7b8f99b1d3b03933b8611557e3028 100644 (file)
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -32,6 +32,7 @@
 #include<iterator>
 
 #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 */
@@ -75,6 +76,12 @@ 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 +97,7 @@ class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
 
        protected:
        inline Group* OwnerPointer() const {
-               return Owner->GrpP;
+               return (Owner != 0) ? Owner->GrpP : 0;
        };
 
        public:
@@ -105,12 +112,15 @@ 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") const;
+       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() 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 +138,7 @@ class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
 
        protected:
        inline Package* OwnerPointer() const {
-               return Owner->PkgP;
+               return (Owner != 0) ? Owner->PkgP : 0;
        };
 
        public:
@@ -175,7 +185,7 @@ 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:
@@ -197,15 +207,10 @@ class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
        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 DescIterator DescriptionList() const;
@@ -215,10 +220,10 @@ class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
        inline VerFileIterator FileList() const;
        bool Downloadable() const;
        inline const char *PriorityType() const {return Owner->Priority(S->Priority);};
-       string RelStr() const;
+       const char *MultiArchType() const;
+       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) {
@@ -232,7 +237,7 @@ 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 +266,7 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 
        protected:
        inline Dependency* OwnerPointer() const {
-               return Owner->DepP;
+               return (Owner != 0) ? Owner->DepP : 0;
        };
 
        public:
@@ -278,12 +283,21 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
        inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->ParentVer].ParentPkg);};
        inline bool Reverse() const {return Type == DepRev;};
        bool IsCritical() const;
+       bool IsNegative() const;
+       bool IsIgnorable(PrvIterator const &Prv) const;
+       bool IsIgnorable(PkgIterator const &Pkg) const;
+       bool IsMultiArchImplicit() const;
+       bool IsSatisfied(VerIterator const &Ver) const;
+       bool IsSatisfied(PrvIterator const &Prv) const;
        void GlobOr(DepIterator &Start,DepIterator &End);
        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)
@@ -303,7 +317,7 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 
        protected:
        inline Provides* OwnerPointer() const {
-               return Owner->ProvideP;
+               return (Owner != 0) ? Owner->ProvideP : 0;
        };
 
        public:
@@ -319,8 +333,9 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
        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;
 
+       inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {};
        inline PrvIterator(pkgCache &Owner, Provides *Trg, Version*) :
                Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvVer) {
                if (S == 0)
@@ -337,7 +352,7 @@ 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:
@@ -358,7 +373,7 @@ class pkgCache::PkgFileIterator : public Iterator<PackageFile, PkgFileIterator>
        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>() {};
@@ -370,7 +385,7 @@ 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 +404,7 @@ 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: