* added APT::NeverAutoRemove (a list of regexp for package names that should never...

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

diff --git a/apt-pkg/depcache.h b/apt-pkg/depcache.h
index 6ce204e659901b92a6371c4cc335d76b13c04055..619daf8f67293b04230336e94aabd5eb83912cb7 100644 (file)
--- a/apt-pkg/depcache.h
+++ b/apt-pkg/depcache.h
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: depcache.h,v 1.12 1999/10/22 05:58:54 jgg Exp $
+// $Id: depcache.h,v 1.14 2001/02/20 07:03:17 jgg Exp $
 /* ######################################################################
 
    DepCache - Dependency Extension data for the cache
@@ -35,7 +35,6 @@
    
    ##################################################################### */
                                                                        /*}}}*/
-// Header section: pkglib
 #ifndef PKGLIB_DEPCACHE_H
 #define PKGLIB_DEPCACHE_H
 
@@ -46,7 +45,7 @@
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/progress.h>
 
-class pkgDepCache : public pkgCache
+class pkgDepCache : protected pkgCache::Namespace
 {
    public:
    
@@ -64,6 +63,7 @@ class pkgDepCache : public pkgCache
       
    enum VersionTypes {NowVersion, InstallVersion, CandidateVersion};
    enum ModeList {ModeDelete = 0, ModeKeep = 1, ModeInstall = 2};
+
    struct StateCache
    {
       // Epoch stripped text versions of the two version fields
@@ -75,16 +75,20 @@ class pkgDepCache : public pkgCache
 
       // Pointer to the install version.
       Version *InstallVer;
+      
+      // Copy of Package::Flags
+      unsigned short Flags;
+      unsigned short iFlags;           // Internal flags
+
+      // mark and sweep flags
+      bool Marked;
+      bool Garbage;
 
       // Various tree indicators
       signed char Status;              // -1,0,1,2
       unsigned char Mode;              // ModeList
       unsigned char DepState;          // DepState Flags
 
-      // Copy of Package::Flags
-      unsigned short Flags;
-      unsigned short iFlags;           // Internal flags
-
       // Update of candidate version
       const char *StripEpoch(const char *Ver);
       void Update(PkgIterator Pkg,pkgCache &Cache);
@@ -95,7 +99,7 @@ class pkgDepCache : public pkgCache
       inline bool Keep() const {return Mode == ModeKeep;};
       inline bool Upgrade() const {return Status > 0 && Mode == ModeInstall;};
       inline bool Upgradable() const {return Status >= 1;};
-      inline bool Downgrade() const {return Status < 0;};
+      inline bool Downgrade() const {return Status < 0 && Mode == ModeInstall;};
       inline bool Held() const {return Status != 0 && Keep();};
       inline bool NowBroken() const {return (DepState & DepNowMin) != DepNowMin;};
       inline bool InstBroken() const {return (DepState & DepInstMin) != DepInstMin;};
@@ -110,29 +114,42 @@ class pkgDepCache : public pkgCache
    void BuildGroupOrs(VerIterator const &V);
    void UpdateVerState(PkgIterator Pkg);
 
-   bool Init(OpProgress *Prog);
-
+   // User Policy control
+   class Policy
+   {
+      public:
+      
+      virtual VerIterator GetCandidateVer(PkgIterator Pkg);
+      virtual bool IsImportantDep(DepIterator Dep);
+      
+      virtual ~Policy() {};
+   };
+     
    protected:
 
    // State information
+   pkgCache *Cache;
    StateCache *PkgState;
    unsigned char *DepState;
    
-   signed long iUsrSize;
-   unsigned long iDownloadSize;
+   double iUsrSize;
+   double iDownloadSize;
    unsigned long iInstCount;
    unsigned long iDelCount;
    unsigned long iKeepCount;
    unsigned long iBrokenCount;
    unsigned long iBadCount;
-      
+   
+   Policy *delLocalPolicy;           // For memory clean up..
+   Policy *LocalPolicy;
+   
    // Check for a matching provides
    bool CheckDep(DepIterator Dep,int Type,PkgIterator &Res);
    inline bool CheckDep(DepIterator Dep,int Type)
    {
-      PkgIterator Res(*this);
+      PkgIterator Res(*this,0);
       return CheckDep(Dep,Type,Res);
-   } 
+   }
    
    // Computes state information for deps and versions (w/o storing)
    unsigned char DependencyState(DepIterator &D);
@@ -145,17 +162,27 @@ class pkgDepCache : public pkgCache
    void Update(PkgIterator const &P);
    
    // Count manipulators
-   void AddSizes(const PkgIterator &Pkg,long Mult = 1);
+   void AddSizes(const PkgIterator &Pkg,signed long Mult = 1);
    inline void RemoveSizes(const PkgIterator &Pkg) {AddSizes(Pkg,-1);};
    void AddStates(const PkgIterator &Pkg,int Add = 1);
    inline void RemoveStates(const PkgIterator &Pkg) {AddStates(Pkg,-1);};
-
+   
    public:
 
+   // Legacy.. We look like a pkgCache
+   inline operator pkgCache &() {return *Cache;};
+   inline Header &Head() {return *Cache->HeaderP;};
+   inline PkgIterator PkgBegin() {return Cache->PkgBegin();};
+   inline PkgIterator FindPkg(string const &Name) {return Cache->FindPkg(Name);};
+
+   inline pkgCache &GetCache() {return *Cache;};
+   inline pkgVersioningSystem &VS() {return *Cache->VS;};
+   
    // Policy implementation
-   virtual VerIterator GetCandidateVer(PkgIterator Pkg,bool AllowCurrent = true);
-   virtual bool IsImportantDep(DepIterator Dep);
-         
+   inline VerIterator GetCandidateVer(PkgIterator Pkg) {return LocalPolicy->GetCandidateVer(Pkg);};
+   inline bool IsImportantDep(DepIterator Dep) {return LocalPolicy->IsImportantDep(Dep);};
+   inline Policy &GetPolicy() {return *LocalPolicy;};
+   
    // Accessors
    inline StateCache &operator [](PkgIterator const &I) {return PkgState[I->ID];};
    inline unsigned char &operator [](DepIterator const &I) {return DepState[I->ID];};
@@ -163,23 +190,30 @@ class pkgDepCache : public pkgCache
    // Manipulators
    void MarkKeep(PkgIterator const &Pkg,bool Soft = false);
    void MarkDelete(PkgIterator const &Pkg,bool Purge = false);
-   void MarkInstall(PkgIterator const &Pkg,bool AutoInst = true);
+   void MarkInstall(PkgIterator const &Pkg,bool AutoInst = true,
+                   unsigned long Depth = 0);
    void SetReInstall(PkgIterator const &Pkg,bool To);
+   void SetCandidateVersion(VerIterator TargetVer);
    
    // This is for debuging
    void Update(OpProgress *Prog = 0);
+
+   // read persistent states
+   bool readStateFile(OpProgress *prog);
+   bool writeStateFile(OpProgress *prog);
    
    // Size queries
-   inline signed long UsrSize() {return iUsrSize;};
-   inline unsigned long DebSize() {return iDownloadSize;};
+   inline double UsrSize() {return iUsrSize;};
+   inline double DebSize() {return iDownloadSize;};
    inline unsigned long DelCount() {return iDelCount;};
    inline unsigned long KeepCount() {return iKeepCount;};
    inline unsigned long InstCount() {return iInstCount;};
    inline unsigned long BrokenCount() {return iBrokenCount;};
    inline unsigned long BadCount() {return iBadCount;};
+
+   bool Init(OpProgress *Prog);
    
-   pkgDepCache(MMap &Map,OpProgress &Prog);
-   pkgDepCache(MMap &Map);
+   pkgDepCache(pkgCache *Cache,Policy *Plcy = 0);
    virtual ~pkgDepCache();
 };