merge from the debian-sid branch

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

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 63f9de8fc557e2d5bd0a15480b90f4ca0fb93e65..28466cd406aae39c5c08eed2c735229a3fef40cd 100644 (file)
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -32,7 +32,7 @@
 #define PKGLIB_CACHEITERATORS_H
 
 
-// Package Iterator
+// Package Iterator                                                    /*{{{*/
 class pkgCache::PkgIterator
 {
    friend class pkgCache;
@@ -80,7 +80,13 @@ class pkgCache::PkgIterator
    inline PrvIterator ProvidesList() const;
    inline unsigned long Index() const {return Pkg - Owner->PkgP;};
    OkState State() const;
-   
+
+   //Nice printable representation
+   friend std::ostream& operator<<(std::ostream& out, pkgCache::PkgIterator Pkg);
+
+   const char *CandVersion() const;
+   const char *CurVersion() const;
+
    // Constructors
    inline PkgIterator(pkgCache &Owner,Package *Trg) : Pkg(Trg), Owner(&Owner),
           HashIndex(0) 
@@ -90,8 +96,8 @@ class pkgCache::PkgIterator
    };
    inline PkgIterator() : Pkg(0), Owner(0), HashIndex(0) {};
 };
-
-// Version Iterator
+                                                                       /*}}}*/
+// Version Iterator                                                    /*{{{*/
 class pkgCache::VerIterator
 {
    Version *Ver;
@@ -104,14 +110,17 @@ class pkgCache::VerIterator
    // Iteration
    void operator ++(int) {if (Ver != Owner->VerP) Ver = Owner->VerP + Ver->NextVer;};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == NULL || (Ver == Owner->VerP?true:false);};
+   inline bool end() const {return Owner == 0 || (Ver == Owner->VerP?true:false);};
    inline void operator =(const VerIterator &B) {Ver = B.Ver; Owner = B.Owner;};
    
    // Comparison
    inline bool operator ==(const VerIterator &B) const {return Ver == B.Ver;};
    inline bool operator !=(const VerIterator &B) const {return Ver != B.Ver;};
    int CompareVer(const VerIterator &B) const;
-   
+
+   // Testing
+   inline bool IsGood() const { return Ver && Owner && ! end();};
+
    // Accessors
    inline Version *operator ->() {return Ver;};
    inline Version const *operator ->() const {return Ver;};
@@ -146,8 +155,8 @@ class pkgCache::VerIterator
         Ver = Owner.VerP;
    };
 };
-
-// Description Iterator
+                                                                       /*}}}*/
+// Description Iterator                                                        /*{{{*/
 class pkgCache::DescIterator
 {
    Description *Desc;
@@ -160,7 +169,7 @@ class pkgCache::DescIterator
    // Iteration
    void operator ++(int) {if (Desc != Owner->DescP) Desc = Owner->DescP + Desc->NextDesc;};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Desc == Owner->DescP?true:false;};
+   inline bool end() const {return Owner == 0 || Desc == Owner->DescP?true:false;};
    inline void operator =(const DescIterator &B) {Desc = B.Desc; Owner = B.Owner;};
    
    // Comparison
@@ -190,8 +199,8 @@ class pkgCache::DescIterator
         Desc = Owner.DescP;
    };
 };
-
-// Dependency iterator
+                                                                       /*}}}*/
+// Dependency iterator                                                 /*{{{*/
 class pkgCache::DepIterator
 {
    Dependency *Dep;
@@ -249,8 +258,8 @@ class pkgCache::DepIterator
    };
    inline DepIterator() : Dep(0), Type(DepVer), Owner(0) {};
 };
-
-// Provides iterator
+                                                                       /*}}}*/
+// Provides iterator                                                   /*{{{*/
 class pkgCache::PrvIterator
 {
    Provides *Prv;
@@ -302,8 +311,8 @@ class pkgCache::PrvIterator
         Prv = Owner.ProvideP;
    };
 };
-
-// Package file 
+                                                                       /*}}}*/
+// Package file                                                                /*{{{*/
 class pkgCache::PkgFileIterator
 {
    pkgCache *Owner;
@@ -314,7 +323,7 @@ class pkgCache::PkgFileIterator
    // Iteration
    void operator ++(int) {if (File!= Owner->PkgFileP) File = Owner->PkgFileP + File->NextFile;};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return File == Owner->PkgFileP?true:false;};
+   inline bool end() const {return Owner == 0 || File == Owner->PkgFileP?true:false;};
 
    // Comparison
    inline bool operator ==(const PkgFileIterator &B) const {return File == B.File;};
@@ -349,8 +358,8 @@ class pkgCache::PkgFileIterator
    inline PkgFileIterator(pkgCache &Owner) : Owner(&Owner), File(Owner.PkgFileP) {};
    inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Owner(&Owner), File(Trg) {};
 };
-
-// Version File 
+                                                                       /*}}}*/
+// Version File                                                                /*{{{*/
 class pkgCache::VerFileIterator
 {
    pkgCache *Owner;
@@ -361,7 +370,7 @@ class pkgCache::VerFileIterator
    // Iteration
    void operator ++(int) {if (FileP != Owner->VerFileP) FileP = Owner->VerFileP + FileP->NextFile;};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return FileP == Owner->VerFileP?true:false;};
+   inline bool end() const {return Owner == 0 || FileP == Owner->VerFileP?true:false;};
 
    // Comparison
    inline bool operator ==(const VerFileIterator &B) const {return FileP == B.FileP;};
@@ -381,8 +390,8 @@ class pkgCache::VerFileIterator
    inline VerFileIterator() : Owner(0), FileP(0) {};
    inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Owner(&Owner), FileP(Trg) {};
 };
-
-// Description File 
+                                                                       /*}}}*/
+// Description File                                                    /*{{{*/
 class pkgCache::DescFileIterator
 {
    pkgCache *Owner;
@@ -393,7 +402,7 @@ class pkgCache::DescFileIterator
    // Iteration
    void operator ++(int) {if (FileP != Owner->DescFileP) FileP = Owner->DescFileP + FileP->NextFile;};
    inline void operator ++() {operator ++(0);};
-   inline bool end() const {return FileP == Owner->DescFileP?true:false;};
+   inline bool end() const {return Owner == 0 ||  FileP == Owner->DescFileP?true:false;};
 
    // Comparison
    inline bool operator ==(const DescFileIterator &B) const {return FileP == B.FileP;};
@@ -413,8 +422,8 @@ class pkgCache::DescFileIterator
    inline DescFileIterator() : Owner(0), FileP(0) {};
    inline DescFileIterator(pkgCache &Owner,DescFile *Trg) : Owner(&Owner), FileP(Trg) {};
 };
-
-// Inlined Begin functions cant be in the class because of order problems
+                                                                       /*}}}*/
+// Inlined Begin functions cant be in the class because of order problems /*{{{*/
 inline pkgCache::VerIterator pkgCache::PkgIterator::VersionList() const
        {return VerIterator(*Owner,Owner->VerP + Pkg->VersionList);};
 inline pkgCache::VerIterator pkgCache::PkgIterator::CurrentVer() const
@@ -433,5 +442,5 @@ inline pkgCache::VerFileIterator pkgCache::VerIterator::FileList() const
        {return VerFileIterator(*Owner,Owner->VerFileP + Ver->FileList);};
 inline pkgCache::DescFileIterator pkgCache::DescIterator::FileList() const
        {return DescFileIterator(*Owner,Owner->DescFileP + Desc->FileList);};
-
+                                                                       /*}}}*/
 #endif