recheck dependencies in SmartUnpack after a change, too

[apt.git] / apt-pkg / pkgcachegen.cc

diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index 8ec6a171975ce1a28e7eee26beadbcc1a32adf38..ec072fddd76ac5bd9757673c4c76c0ce36e8c20d 100644 (file)
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -10,11 +10,7 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

-#ifdef __GNUG__
-#pragma implementation "apt-pkg/pkgcachegen.h"
-#endif
-
-#define APT_COMPATIBILITY 986
+#include <config.h>

 
 #include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/error.h>
 
 #include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/error.h>


@@ -22,27 +18,34 @@
 #include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/configuration.h>

+#include <apt-pkg/aptconfiguration.h>

 #include <apt-pkg/strutl.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/pkgsystem.h>

-
+#include <apt-pkg/macros.h>

 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/tagfile.h>

-
-#include <apti18n.h>
+#include <apt-pkg/metaindex.h>
+#include <apt-pkg/fileutl.h>

 
 #include <vector>
 
 #include <vector>

-

 #include <sys/stat.h>
 #include <unistd.h>
 #include <errno.h>
 #include <stdio.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <errno.h>
 #include <stdio.h>

-#include <system.h>
+
+#include <apti18n.h>

                                                                        /*}}}*/
                                                                        /*}}}*/

-typedef vector<pkgIndexFile *>::iterator FileIterator;
+typedef std::vector<pkgIndexFile *>::iterator FileIterator;
+template <typename Iter> std::vector<Iter*> pkgCacheGenerator::Dynamic<Iter>::toReMap;
+
+bool IsDuplicateDescription(pkgCache::DescIterator Desc,
+                           MD5SumValue const &CurMd5, std::string const &CurLang);
+
+using std::string;

 
 // CacheGenerator::pkgCacheGenerator - Constructor                     /*{{{*/
 // ---------------------------------------------------------------------
 
 // CacheGenerator::pkgCacheGenerator - Constructor                     /*{{{*/
 // ---------------------------------------------------------------------

-/* We set the diry flag and make sure that is written to the disk */
+/* We set the dirty flag and make sure that is written to the disk */

 pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) :
                    Map(*pMap), Cache(pMap,false), Progress(Prog),
                    FoundFileDeps(0)
 pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) :
                    Map(*pMap), Cache(pMap,false), Progress(Prog),
                    FoundFileDeps(0)


@@ -57,14 +60,20 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) :
    {
       // Setup the map interface..
       Cache.HeaderP = (pkgCache::Header *)Map.Data();
    {
       // Setup the map interface..
       Cache.HeaderP = (pkgCache::Header *)Map.Data();

-      Map.RawAllocate(sizeof(pkgCache::Header));
+      if (Map.RawAllocate(sizeof(pkgCache::Header)) == 0 && _error->PendingError() == true)
+        return;
+

       Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0]));
       Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0]));

-      
+

       // Starting header
       *Cache.HeaderP = pkgCache::Header();
       // Starting header
       *Cache.HeaderP = pkgCache::Header();

-      Cache.HeaderP->VerSysName = Map.WriteString(_system->VS->Label);
-      Cache.HeaderP->Architecture = Map.WriteString(_config->Find("APT::Architecture"));
-      Cache.ReMap(); 
+      map_ptrloc const idxVerSysName = WriteStringInMap(_system->VS->Label);
+      Cache.HeaderP->VerSysName = idxVerSysName;
+      map_ptrloc const idxArchitecture = WriteStringInMap(_config->Find("APT::Architecture"));
+      Cache.HeaderP->Architecture = idxArchitecture;
+      if (unlikely(idxVerSysName == 0 || idxArchitecture == 0))
+        return;
+      Cache.ReMap();

    }
    else
    {
    }
    else
    {


@@ -94,9 +103,74 @@ pkgCacheGenerator::~pkgCacheGenerator()
       return;
    
    Cache.HeaderP->Dirty = false;
       return;
    
    Cache.HeaderP->Dirty = false;

+   Cache.HeaderP->CacheFileSize = Map.Size();

    Map.Sync(0,sizeof(pkgCache::Header));
 }
                                                                        /*}}}*/
    Map.Sync(0,sizeof(pkgCache::Header));
 }
                                                                        /*}}}*/

+void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newMap) {/*{{{*/
+   if (oldMap == newMap)
+      return;
+
+   if (_config->FindB("Debug::pkgCacheGen", false))
+      std::clog << "Remaping from " << oldMap << " to " << newMap << std::endl;
+
+   Cache.ReMap(false);
+
+   CurrentFile += (pkgCache::PackageFile*) newMap - (pkgCache::PackageFile*) oldMap;
+
+   for (size_t i = 0; i < _count(UniqHash); ++i)
+      if (UniqHash[i] != 0)
+        UniqHash[i] += (pkgCache::StringItem*) newMap - (pkgCache::StringItem*) oldMap;
+
+   for (std::vector<pkgCache::GrpIterator*>::const_iterator i = Dynamic<pkgCache::GrpIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::GrpIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::PkgIterator*>::const_iterator i = Dynamic<pkgCache::PkgIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::PkgIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::VerIterator*>::const_iterator i = Dynamic<pkgCache::VerIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::VerIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::DepIterator*>::const_iterator i = Dynamic<pkgCache::DepIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::DepIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::DescIterator*>::const_iterator i = Dynamic<pkgCache::DescIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::DescIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::PrvIterator*>::const_iterator i = Dynamic<pkgCache::PrvIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::PrvIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::PkgFileIterator*>::const_iterator i = Dynamic<pkgCache::PkgFileIterator>::toReMap.begin();
+       i != Dynamic<pkgCache::PkgFileIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+}                                                                      /*}}}*/
+// CacheGenerator::WriteStringInMap                                    /*{{{*/
+map_ptrloc pkgCacheGenerator::WriteStringInMap(const char *String,
+                                       const unsigned long &Len) {
+   void const * const oldMap = Map.Data();
+   map_ptrloc const index = Map.WriteString(String, Len);
+   if (index != 0)
+      ReMap(oldMap, Map.Data());
+   return index;
+}
+                                                                       /*}}}*/
+// CacheGenerator::WriteStringInMap                                    /*{{{*/
+map_ptrloc pkgCacheGenerator::WriteStringInMap(const char *String) {
+   void const * const oldMap = Map.Data();
+   map_ptrloc const index = Map.WriteString(String);
+   if (index != 0)
+      ReMap(oldMap, Map.Data());
+   return index;
+}
+                                                                       /*}}}*/
+map_ptrloc pkgCacheGenerator::AllocateInMap(const unsigned long &size) {/*{{{*/
+   void const * const oldMap = Map.Data();
+   map_ptrloc const index = Map.Allocate(size);
+   if (index != 0)
+      ReMap(oldMap, Map.Data());
+   return index;
+}
+                                                                       /*}}}*/

 // CacheGenerator::MergeList - Merge the package list                  /*{{{*/
 // ---------------------------------------------------------------------
 /* This provides the generation of the entries in the cache. Each loop
 // CacheGenerator::MergeList - Merge the package list                  /*{{{*/
 // ---------------------------------------------------------------------
 /* This provides the generation of the entries in the cache. Each loop


@@ -109,163 +183,292 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
    unsigned int Counter = 0;
    while (List.Step() == true)
    {
    unsigned int Counter = 0;
    while (List.Step() == true)
    {

-      // Get a pointer to the package structure
-      string PackageName = List.Package();
+      string const PackageName = List.Package();

       if (PackageName.empty() == true)
         return false;
       if (PackageName.empty() == true)
         return false;

-      
-      pkgCache::PkgIterator Pkg;
-      if (NewPackage(Pkg,PackageName) == false)
-        return _error->Error(_("Error occurred while processing %s (NewPackage)"),PackageName.c_str());
+

       Counter++;
       if (Counter % 100 == 0 && Progress != 0)
         Progress->Progress(List.Offset());
 
       Counter++;
       if (Counter % 100 == 0 && Progress != 0)
         Progress->Progress(List.Offset());
 

-      /* Get a pointer to the version structure. We know the list is sorted
-         so we use that fact in the search. Insertion of new versions is
-        done with correct sorting */
-      string Version = List.Version();
+      string Arch = List.Architecture();
+      string const Version = List.Version();
+      if (Version.empty() == true && Arch.empty() == true)
+      {
+        if (MergeListGroup(List, PackageName) == false)
+           return false;
+      }
+
+      if (Arch.empty() == true)
+        Arch = _config->Find("APT::Architecture");
+
+      // Get a pointer to the package structure
+      pkgCache::PkgIterator Pkg;
+      Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+      if (NewPackage(Pkg, PackageName, Arch) == false)
+        // TRANSLATOR: The first placeholder is a package name,
+        // the other two should be copied verbatim as they include debug info
+        return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                             PackageName.c_str(), "NewPackage", 1);
+
+

       if (Version.empty() == true)
       {
       if (Version.empty() == true)
       {

-        // we first process the package, then the descriptions
-        // (this has the bonus that we get MMap error when we run out
-        //  of MMap space)
-        if (List.UsePackage(Pkg,pkgCache::VerIterator(Cache)) == false)
-           return _error->Error(_("Error occurred while processing %s (UsePackage1)"),
-                                PackageName.c_str());
-
-        // Find the right version to write the description
-        MD5SumValue CurMd5 = List.Description_md5();
-        pkgCache::VerIterator Ver = Pkg.VersionList();
-        map_ptrloc *LastVer = &Pkg->VersionList;
-
-        for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++) 
-        {
-           pkgCache::DescIterator Desc = Ver.DescriptionList();
-           map_ptrloc *LastDesc = &Ver->DescriptionList;
-
-           for (; Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++)
-           {
-
-              if (MD5SumValue(Desc.md5()) == CurMd5) 
-               {
-                 // Add new description
-                 *LastDesc = NewDescription(Desc, List.DescriptionLanguage(), CurMd5, *LastDesc);
-                 Desc->ParentPkg = Pkg.Index();
-                 
-                 if (NewFileDesc(Desc,List) == false)
-                    return _error->Error(_("Error occured while processing %s (NewFileDesc1)"),PackageName.c_str());
-                 break;
-              }
-           }
-        }
+        if (MergeListPackage(List, Pkg) == false)
+           return false;
+      }
+      else
+      {
+        if (MergeListVersion(List, Pkg, Version, OutVer) == false)
+           return false;
+      }

 
 

-        continue;
+      if (OutVer != 0)
+      {
+        FoundFileDeps |= List.HasFileDeps();
+        return true;

       }
       }

+   }

 
 

-      pkgCache::VerIterator Ver = Pkg.VersionList();
-      map_ptrloc *LastVer = &Pkg->VersionList;
+   if (Cache.HeaderP->PackageCount >= (1ULL<<sizeof(Cache.PkgP->ID)*8)-1)
+      return _error->Error(_("Wow, you exceeded the number of package "
+                            "names this APT is capable of."));
+   if (Cache.HeaderP->VersionCount >= (1ULL<<(sizeof(Cache.VerP->ID)*8))-1)
+      return _error->Error(_("Wow, you exceeded the number of versions "
+                            "this APT is capable of."));
+   if (Cache.HeaderP->DescriptionCount >= (1ULL<<(sizeof(Cache.DescP->ID)*8))-1)
+      return _error->Error(_("Wow, you exceeded the number of descriptions "
+                            "this APT is capable of."));
+   if (Cache.HeaderP->DependsCount >= (1ULL<<(sizeof(Cache.DepP->ID)*8))-1ULL)
+      return _error->Error(_("Wow, you exceeded the number of dependencies "
+                            "this APT is capable of."));
+
+   FoundFileDeps |= List.HasFileDeps();
+   return true;
+}
+// CacheGenerator::MergeListGroup                                      /*{{{*/
+bool pkgCacheGenerator::MergeListGroup(ListParser &List, std::string const &GrpName)
+{
+   pkgCache::GrpIterator Grp = Cache.FindGrp(GrpName);
+   // a group has no data on it's own, only packages have it but these
+   // stanzas like this come from Translation- files to add descriptions,
+   // but without a version we don't need a description for it…
+   if (Grp.end() == true)
+      return true;
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
+
+   pkgCache::PkgIterator Pkg;
+   Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+   for (Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
+      if (MergeListPackage(List, Pkg) == false)
+        return false;
+
+   return true;
+}
+                                                                       /*}}}*/
+// CacheGenerator::MergeListPackage                                    /*{{{*/
+bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator &Pkg)
+{
+   // we first process the package, then the descriptions
+   // (for deb this package processing is in fact a no-op)
+   pkgCache::VerIterator Ver(Cache);
+   Dynamic<pkgCache::VerIterator> DynVer(Ver);
+   if (List.UsePackage(Pkg, Ver) == false)
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "UsePackage", 1);
+
+   // Find the right version to write the description
+   MD5SumValue CurMd5 = List.Description_md5();
+   std::string CurLang = List.DescriptionLanguage();
+
+   for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
+   {
+      pkgCache::DescIterator Desc = Ver.DescriptionList();
+
+      // a version can only have one md5 describing it
+      if (MD5SumValue(Desc.md5()) != CurMd5)
+        continue;
+
+      // don't add a new description if we have one for the given
+      // md5 && language
+      if (IsDuplicateDescription(Desc, CurMd5, CurLang) == true)
+        continue;
+
+      Dynamic<pkgCache::DescIterator> DynDesc(Desc);
+      // we add at the end, so that the start is constant as we need
+      // that to be able to efficiently share these lists
+      map_ptrloc *LastDesc = &Ver->DescriptionList;
+      for (;Desc.end() == false && Desc->NextDesc != 0; ++Desc);
+      if (Desc.end() == false)
+        LastDesc = &Desc->NextDesc;
+
+      void const * const oldMap = Map.Data();
+      map_ptrloc const descindex = NewDescription(Desc, CurLang, CurMd5, *LastDesc);
+      if (oldMap != Map.Data())
+        LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+      *LastDesc = descindex;
+      Desc->ParentPkg = Pkg.Index();
+
+      if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false)
+        return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                             Pkg.Name(), "NewFileDesc", 1);
+
+      // we can stop here as all "same" versions will share the description
+      break;
+   }
+
+   return true;
+}
+                                                                       /*}}}*/
+// CacheGenerator::MergeListVersion                                    /*{{{*/
+bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator &Pkg,
+                                        std::string const &Version, pkgCache::VerIterator* &OutVer)
+{
+   pkgCache::VerIterator Ver = Pkg.VersionList();
+   Dynamic<pkgCache::VerIterator> DynVer(Ver);
+   map_ptrloc *LastVer = &Pkg->VersionList;
+   void const * oldMap = Map.Data();
+
+   unsigned long const Hash = List.VersionHash();
+   if (Ver.end() == false)
+   {
+      /* We know the list is sorted so we use that fact in the search.
+         Insertion of new versions is done with correct sorting */

       int Res = 1;
       for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
       {
         Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
       int Res = 1;
       for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
       {
         Res = Cache.VS->CmpVersion(Version,Ver.VerStr());

-        if (Res >= 0)
+        // Version is higher as current version - insert here
+        if (Res > 0)
+           break;
+        // Versionstrings are equal - is hash also equal?
+        if (Res == 0 && Ver->Hash == Hash)

            break;
            break;

+        // proceed with the next till we have either the right
+        // or we found another version (which will be lower)

       }
       }

-      
-      /* We already have a version for this item, record that we
-         saw it */
-      unsigned long Hash = List.VersionHash();
-      if (Res == 0 && Ver->Hash == Hash)
+
+      /* We already have a version for this item, record that we saw it */
+      if (Res == 0 && Ver.end() == false && Ver->Hash == Hash)

       {
         if (List.UsePackage(Pkg,Ver) == false)
       {
         if (List.UsePackage(Pkg,Ver) == false)

-           return _error->Error(_("Error occurred while processing %s (UsePackage2)"),
-                                PackageName.c_str());
+           return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                                Pkg.Name(), "UsePackage", 2);

 
         if (NewFileVer(Ver,List) == false)
 
         if (NewFileVer(Ver,List) == false)

-           return _error->Error(_("Error occurred while processing %s (NewFileVer1)"),
-                                PackageName.c_str());
-        
+           return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                                Pkg.Name(), "NewFileVer", 1);
+

         // Read only a single record and return
         if (OutVer != 0)
         {
            *OutVer = Ver;
         // Read only a single record and return
         if (OutVer != 0)
         {
            *OutVer = Ver;

-           FoundFileDeps |= List.HasFileDeps();

            return true;
         }
            return true;
         }

-        
-        continue;
-      }      

 
 

-      // Skip to the end of the same version set.
-      if (Res == 0)
-      {
-        for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
-        {
-           Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
-           if (Res != 0)
-              break;
-        }
+        return true;

       }
       }

+   }

 
 

-      // Add a new version
-      *LastVer = NewVersion(Ver,Version,*LastVer);
-      Ver->ParentPkg = Pkg.Index();
-      Ver->Hash = Hash;
+   // Add a new version
+   map_ptrloc const verindex = NewVersion(Ver,Version,*LastVer);
+   if (verindex == 0 && _error->PendingError())
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "NewVersion", 1);

 
 

-      if (List.NewVersion(Ver) == false)
-        return _error->Error(_("Error occurred while processing %s (NewVersion1)"),
-                             PackageName.c_str());
+   if (oldMap != Map.Data())
+        LastVer += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+   *LastVer = verindex;
+   Ver->ParentPkg = Pkg.Index();
+   Ver->Hash = Hash;

 
 

-      if (List.UsePackage(Pkg,Ver) == false)
-        return _error->Error(_("Error occurred while processing %s (UsePackage3)"),
-                             PackageName.c_str());
-      
-      if (NewFileVer(Ver,List) == false)
-        return _error->Error(_("Error occurred while processing %s (NewVersion2)"),
-                             PackageName.c_str());
+   if (unlikely(List.NewVersion(Ver) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "NewVersion", 2);

 
 

-      // Read only a single record and return
-      if (OutVer != 0)
+   if (unlikely(List.UsePackage(Pkg,Ver) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "UsePackage", 3);
+
+   if (unlikely(NewFileVer(Ver,List) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "NewFileVer", 2);
+
+   pkgCache::GrpIterator Grp = Pkg.Group();
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
+
+   /* If it is the first version of this package we need to add implicit
+      Multi-Arch dependencies to all other package versions in the group now -
+      otherwise we just add them for this new version */
+   if (Pkg.VersionList()->NextVer == 0)
+   {
+      pkgCache::PkgIterator P = Grp.PackageList();
+      Dynamic<pkgCache::PkgIterator> DynP(P);
+      for (; P.end() != true; P = Grp.NextPkg(P))

       {
       {

-        *OutVer = Ver;
-        FoundFileDeps |= List.HasFileDeps();
-        return true;
-      }      
+        if (P->ID == Pkg->ID)
+           continue;
+        pkgCache::VerIterator V = P.VersionList();
+        Dynamic<pkgCache::VerIterator> DynV(V);
+        for (; V.end() != true; ++V)
+           if (unlikely(AddImplicitDepends(V, Pkg) == false))
+              return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                                   Pkg.Name(), "AddImplicitDepends", 1);
+      }
+   }
+   if (unlikely(AddImplicitDepends(Grp, Pkg, Ver) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "AddImplicitDepends", 2);

 
 

-      /* Record the Description data. Description data always exist in
-        Packages and Translation-* files. */
-      pkgCache::DescIterator Desc = Ver.DescriptionList();
-      map_ptrloc *LastDesc = &Ver->DescriptionList;
-      
-      // Skip to the end of description set
-      for (; Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++);
+   // Read only a single record and return
+   if (OutVer != 0)
+   {
+      *OutVer = Ver;
+      return true;
+   }

 
 

-      // Add new description
-      *LastDesc = NewDescription(Desc, List.DescriptionLanguage(), List.Description_md5(), *LastDesc);
-      Desc->ParentPkg = Pkg.Index();
+   /* Record the Description (it is not translated) */
+   MD5SumValue CurMd5 = List.Description_md5();
+   if (CurMd5.Value().empty() == true)
+      return true;
+   std::string CurLang = List.DescriptionLanguage();

 
 

-      if (NewFileDesc(Desc,List) == false)
-        return _error->Error(_("Error occured while processing %s (NewFileDesc2)"),PackageName.c_str());
+   /* Before we add a new description we first search in the group for
+      a version with a description of the same MD5 - if so we reuse this
+      description group instead of creating our own for this version */
+   for (pkgCache::PkgIterator P = Grp.PackageList();
+       P.end() == false; P = Grp.NextPkg(P))
+   {
+      for (pkgCache::VerIterator V = P.VersionList();
+          V.end() == false; ++V)
+      {
+        if (IsDuplicateDescription(V.DescriptionList(), CurMd5, "") == false)
+           continue;
+        Ver->DescriptionList = V->DescriptionList;
+        return true;
+      }

    }
 
    }
 

-   FoundFileDeps |= List.HasFileDeps();
+   // We haven't found reusable descriptions, so add the first description
+   pkgCache::DescIterator Desc = Ver.DescriptionList();
+   Dynamic<pkgCache::DescIterator> DynDesc(Desc);
+   map_ptrloc *LastDesc = &Ver->DescriptionList;
+
+   oldMap = Map.Data();
+   map_ptrloc const descindex = NewDescription(Desc, CurLang, CurMd5, *LastDesc);
+   if (oldMap != Map.Data())
+       LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+   *LastDesc = descindex;
+   Desc->ParentPkg = Pkg.Index();
+
+   if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false)
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "NewFileDesc", 2);

 
 

-   if (Cache.HeaderP->PackageCount >= (1ULL<<sizeof(Cache.PkgP->ID)*8)-1)
-      return _error->Error(_("Wow, you exceeded the number of package "
-                            "names this APT is capable of."));
-   if (Cache.HeaderP->VersionCount >= (1ULL<<(sizeof(Cache.VerP->ID)*8))-1)
-      return _error->Error(_("Wow, you exceeded the number of versions "
-                            "this APT is capable of."));
-   if (Cache.HeaderP->DescriptionCount >= (1ULL<<(sizeof(Cache.DescP->ID)*8))-1)
-      return _error->Error(_("Wow, you exceeded the number of descriptions "
-                            "this APT is capable of."));
-   if (Cache.HeaderP->DependsCount >= (1ULL<<(sizeof(Cache.DepP->ID)*8))-1ULL)
-      return _error->Error(_("Wow, you exceeded the number of dependencies "
-                            "this APT is capable of."));

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

+                                                                       /*}}}*/

 // CacheGenerator::MergeFileProvides - Merge file provides             /*{{{*/
 // ---------------------------------------------------------------------
 /* If we found any file depends while parsing the main list we need to 
 // CacheGenerator::MergeFileProvides - Merge file provides             /*{{{*/
 // ---------------------------------------------------------------------
 /* If we found any file depends while parsing the main list we need to 


@@ -288,21 +491,24 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
         continue;
       
       pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);
         continue;
       
       pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);

+      Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);

       if (Pkg.end() == true)
       if (Pkg.end() == true)

-        return _error->Error(_("Error occurred while processing %s (FindPkg)"),
-                               PackageName.c_str());
+        return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                               PackageName.c_str(), "FindPkg", 1);

       Counter++;
       if (Counter % 100 == 0 && Progress != 0)
         Progress->Progress(List.Offset());
 
       unsigned long Hash = List.VersionHash();
       pkgCache::VerIterator Ver = Pkg.VersionList();
       Counter++;
       if (Counter % 100 == 0 && Progress != 0)
         Progress->Progress(List.Offset());
 
       unsigned long Hash = List.VersionHash();
       pkgCache::VerIterator Ver = Pkg.VersionList();

-      for (; Ver.end() == false; Ver++)
+      Dynamic<pkgCache::VerIterator> DynVer(Ver);
+      for (; Ver.end() == false; ++Ver)

       {
         if (Ver->Hash == Hash && Version.c_str() == Ver.VerStr())
         {
            if (List.CollectFileProvides(Cache,Ver) == false)
       {
         if (Ver->Hash == Hash && Version.c_str() == Ver.VerStr())
         {
            if (List.CollectFileProvides(Cache,Ver) == false)

-              return _error->Error(_("Error occurred while processing %s (CollectFileProvides)"),PackageName.c_str());
+              return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                                   PackageName.c_str(), "CollectFileProvides", 1);

            break;
         }
       }
            break;
         }
       }


@@ -314,35 +520,154 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-// CacheGenerator::NewPackage - Add a new package                      /*{{{*/
+// CacheGenerator::NewGroup - Add a new group                          /*{{{*/

 // ---------------------------------------------------------------------
 // ---------------------------------------------------------------------

-/* This creates a new package structure and adds it to the hash table */
-bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name)
+/* This creates a new group structure and adds it to the hash table */
+bool pkgCacheGenerator::NewGroup(pkgCache::GrpIterator &Grp, const string &Name)

 {
 {

-   Pkg = Cache.FindPkg(Name);
-   if (Pkg.end() == false)
+   Grp = Cache.FindGrp(Name);
+   if (Grp.end() == false)

       return true;
 
    // Get a structure
       return true;
 
    // Get a structure

-   unsigned long Package = Map.Allocate(sizeof(pkgCache::Package));
-   if (Package == 0)
+   map_ptrloc const Group = AllocateInMap(sizeof(pkgCache::Group));
+   if (unlikely(Group == 0))

       return false;
       return false;

-   
-   Pkg = pkgCache::PkgIterator(Cache,Cache.PkgP + Package);
-   
+
+   Grp = pkgCache::GrpIterator(Cache, Cache.GrpP + Group);
+   map_ptrloc const idxName = WriteStringInMap(Name);
+   if (unlikely(idxName == 0))
+      return false;
+   Grp->Name = idxName;
+

    // Insert it into the hash table
    // Insert it into the hash table

-   unsigned long Hash = Cache.Hash(Name);
-   Pkg->NextPackage = Cache.HeaderP->HashTable[Hash];
-   Cache.HeaderP->HashTable[Hash] = Package;
-   
-   // Set the name and the ID
-   Pkg->Name = Map.WriteString(Name);
-   if (Pkg->Name == 0)
+   unsigned long const Hash = Cache.Hash(Name);
+   Grp->Next = Cache.HeaderP->GrpHashTable[Hash];
+   Cache.HeaderP->GrpHashTable[Hash] = Group;
+
+   Grp->ID = Cache.HeaderP->GroupCount++;
+   return true;
+}
+                                                                       /*}}}*/
+// CacheGenerator::NewPackage - Add a new package                      /*{{{*/
+// ---------------------------------------------------------------------
+/* This creates a new package structure and adds it to the hash table */
+bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name,
+                                       const string &Arch) {
+   pkgCache::GrpIterator Grp;
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
+   if (unlikely(NewGroup(Grp, Name) == false))

       return false;
       return false;

+
+   Pkg = Grp.FindPkg(Arch);
+      if (Pkg.end() == false)
+        return true;
+
+   // Get a structure
+   map_ptrloc const Package = AllocateInMap(sizeof(pkgCache::Package));
+   if (unlikely(Package == 0))
+      return false;
+   Pkg = pkgCache::PkgIterator(Cache,Cache.PkgP + Package);
+
+   // Insert the package into our package list
+   if (Grp->FirstPackage == 0) // the group is new
+   {
+      // Insert it into the hash table
+      unsigned long const Hash = Cache.Hash(Name);
+      Pkg->NextPackage = Cache.HeaderP->PkgHashTable[Hash];
+      Cache.HeaderP->PkgHashTable[Hash] = Package;
+      Grp->FirstPackage = Package;
+   }
+   else // Group the Packages together
+   {
+      // this package is the new last package
+      pkgCache::PkgIterator LastPkg(Cache, Cache.PkgP + Grp->LastPackage);
+      Pkg->NextPackage = LastPkg->NextPackage;
+      LastPkg->NextPackage = Package;
+   }
+   Grp->LastPackage = Package;
+
+   // Set the name, arch and the ID
+   Pkg->Name = Grp->Name;
+   Pkg->Group = Grp.Index();
+   // all is mapped to the native architecture
+   map_ptrloc const idxArch = (Arch == "all") ? Cache.HeaderP->Architecture : WriteUniqString(Arch.c_str());
+   if (unlikely(idxArch == 0))
+      return false;
+   Pkg->Arch = idxArch;

    Pkg->ID = Cache.HeaderP->PackageCount++;
    Pkg->ID = Cache.HeaderP->PackageCount++;

-   
+
+   return true;
+}
+                                                                       /*}}}*/
+// CacheGenerator::AddImplicitDepends                                  /*{{{*/
+bool pkgCacheGenerator::AddImplicitDepends(pkgCache::GrpIterator &G,
+                                          pkgCache::PkgIterator &P,
+                                          pkgCache::VerIterator &V)
+{
+   // copy P.Arch() into a string here as a cache remap
+   // in NewDepends() later may alter the pointer location
+   string Arch = P.Arch() == NULL ? "" : P.Arch();
+   map_ptrloc *OldDepLast = NULL;
+   /* MultiArch handling introduces a lot of implicit Dependencies:
+      - MultiArch: same → Co-Installable if they have the same version
+      - All others conflict with all other group members */
+   bool const coInstall = ((V->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same);
+   pkgCache::PkgIterator D = G.PackageList();
+   Dynamic<pkgCache::PkgIterator> DynD(D);
+   for (; D.end() != true; D = G.NextPkg(D))
+   {
+      if (Arch == D.Arch() || D->VersionList == 0)
+        continue;
+      /* We allow only one installed arch at the time
+        per group, therefore each group member conflicts
+        with all other group members */
+      if (coInstall == true)
+      {
+        // Replaces: ${self}:other ( << ${binary:Version})
+        NewDepends(D, V, V.VerStr(),
+                   pkgCache::Dep::Less, pkgCache::Dep::Replaces,
+                   OldDepLast);
+        // Breaks: ${self}:other (!= ${binary:Version})
+        NewDepends(D, V, V.VerStr(),
+                   pkgCache::Dep::NotEquals, pkgCache::Dep::DpkgBreaks,
+                   OldDepLast);
+      } else {
+        // Conflicts: ${self}:other
+        NewDepends(D, V, "",
+                   pkgCache::Dep::NoOp, pkgCache::Dep::Conflicts,
+                   OldDepLast);
+      }
+   }
+   return true;
+}
+bool pkgCacheGenerator::AddImplicitDepends(pkgCache::VerIterator &V,
+                                          pkgCache::PkgIterator &D)
+{
+   /* MultiArch handling introduces a lot of implicit Dependencies:
+      - MultiArch: same → Co-Installable if they have the same version
+      - All others conflict with all other group members */
+   map_ptrloc *OldDepLast = NULL;
+   bool const coInstall = ((V->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same);
+   if (coInstall == true)
+   {
+      // Replaces: ${self}:other ( << ${binary:Version})
+      NewDepends(D, V, V.VerStr(),
+                pkgCache::Dep::Less, pkgCache::Dep::Replaces,
+                OldDepLast);
+      // Breaks: ${self}:other (!= ${binary:Version})
+      NewDepends(D, V, V.VerStr(),
+                pkgCache::Dep::NotEquals, pkgCache::Dep::DpkgBreaks,
+                OldDepLast);
+   } else {
+      // Conflicts: ${self}:other
+      NewDepends(D, V, "",
+                pkgCache::Dep::NoOp, pkgCache::Dep::Conflicts,
+                OldDepLast);
+   }

    return true;
 }
    return true;
 }

+

                                                                        /*}}}*/
 // CacheGenerator::NewFileVer - Create a new File<->Version association        /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // CacheGenerator::NewFileVer - Create a new File<->Version association        /*{{{*/
 // ---------------------------------------------------------------------


@@ -354,7 +679,7 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver,
       return true;
    
    // Get a structure
       return true;
    
    // Get a structure

-   unsigned long VerFile = Map.Allocate(sizeof(pkgCache::VerFile));
+   map_ptrloc const VerFile = AllocateInMap(sizeof(pkgCache::VerFile));

    if (VerFile == 0)
       return 0;
    
    if (VerFile == 0)
       return 0;
    


@@ -363,7 +688,7 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver,
    
    // Link it to the end of the list
    map_ptrloc *Last = &Ver->FileList;
    
    // Link it to the end of the list
    map_ptrloc *Last = &Ver->FileList;

-   for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; V++)
+   for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; ++V)

       Last = &V->NextFile;
    VF->NextFile = *Last;
    *Last = VF.Index();
       Last = &V->NextFile;
    VF->NextFile = *Last;
    *Last = VF.Index();


@@ -385,7 +710,7 @@ unsigned long pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver,
                                            unsigned long Next)
 {
    // Get a structure
                                            unsigned long Next)
 {
    // Get a structure

-   unsigned long Version = Map.Allocate(sizeof(pkgCache::Version));
+   map_ptrloc const Version = AllocateInMap(sizeof(pkgCache::Version));

    if (Version == 0)
       return 0;
    
    if (Version == 0)
       return 0;
    


@@ -393,9 +718,10 @@ unsigned long pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver,
    Ver = pkgCache::VerIterator(Cache,Cache.VerP + Version);
    Ver->NextVer = Next;
    Ver->ID = Cache.HeaderP->VersionCount++;
    Ver = pkgCache::VerIterator(Cache,Cache.VerP + Version);
    Ver->NextVer = Next;
    Ver->ID = Cache.HeaderP->VersionCount++;

-   Ver->VerStr = Map.WriteString(VerStr);
-   if (Ver->VerStr == 0)
+   map_ptrloc const idxVerStr = WriteStringInMap(VerStr);
+   if (unlikely(idxVerStr == 0))

       return 0;
       return 0;

+   Ver->VerStr = idxVerStr;

    
    return Version;
 }
    
    return Version;
 }


@@ -410,16 +736,16 @@ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc,
       return true;
    
    // Get a structure
       return true;
    
    // Get a structure

-   unsigned long DescFile = Map.Allocate(sizeof(pkgCache::DescFile));
+   map_ptrloc const DescFile = AllocateInMap(sizeof(pkgCache::DescFile));

    if (DescFile == 0)
    if (DescFile == 0)

-      return 0;
+      return false;

 
    pkgCache::DescFileIterator DF(Cache,Cache.DescFileP + DescFile);
    DF->File = CurrentFile - Cache.PkgFileP;
 
    // Link it to the end of the list
    map_ptrloc *Last = &Desc->FileList;
 
    pkgCache::DescFileIterator DF(Cache,Cache.DescFileP + DescFile);
    DF->File = CurrentFile - Cache.PkgFileP;
 
    // Link it to the end of the list
    map_ptrloc *Last = &Desc->FileList;

-   for (pkgCache::DescFileIterator D = Desc.FileList(); D.end() == false; D++)
+   for (pkgCache::DescFileIterator D = Desc.FileList(); D.end() == false; ++D)

       Last = &D->NextFile;
 
    DF->NextFile = *Last;
       Last = &D->NextFile;
 
    DF->NextFile = *Last;


@@ -438,11 +764,12 @@ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc,
 // ---------------------------------------------------------------------
 /* This puts a description structure in the linked list */
 map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc,
 // ---------------------------------------------------------------------
 /* This puts a description structure in the linked list */
 map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc,

-                                           const string &Lang, const MD5SumValue &md5sum,
+                                           const string &Lang, 
+                                            const MD5SumValue &md5sum,

                                            map_ptrloc Next)
 {
    // Get a structure
                                            map_ptrloc Next)
 {
    // Get a structure

-   map_ptrloc Description = Map.Allocate(sizeof(pkgCache::Description));
+   map_ptrloc const Description = AllocateInMap(sizeof(pkgCache::Description));

    if (Description == 0)
       return 0;
 
    if (Description == 0)
       return 0;
 


@@ -450,71 +777,69 @@ map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc,
    Desc = pkgCache::DescIterator(Cache,Cache.DescP + Description);
    Desc->NextDesc = Next;
    Desc->ID = Cache.HeaderP->DescriptionCount++;
    Desc = pkgCache::DescIterator(Cache,Cache.DescP + Description);
    Desc->NextDesc = Next;
    Desc->ID = Cache.HeaderP->DescriptionCount++;

-   Desc->language_code = Map.WriteString(Lang);
-   Desc->md5sum = Map.WriteString(md5sum.Value());
+   map_ptrloc const idxlanguage_code = WriteStringInMap(Lang);
+   map_ptrloc const idxmd5sum = WriteStringInMap(md5sum.Value());
+   if (unlikely(idxlanguage_code == 0 || idxmd5sum == 0))
+      return 0;
+   Desc->language_code = idxlanguage_code;
+   Desc->md5sum = idxmd5sum;

 
    return Description;
 }
                                                                        /*}}}*/
 
    return Description;
 }
                                                                        /*}}}*/

-// ListParser::NewDepends - Create a dependency element                        /*{{{*/
+// CacheGenerator::NewDepends - Create a dependency element            /*{{{*/

 // ---------------------------------------------------------------------
 /* This creates a dependency element in the tree. It is linked to the
    version and to the package that it is pointing to. */
 // ---------------------------------------------------------------------
 /* This creates a dependency element in the tree. It is linked to the
    version and to the package that it is pointing to. */

-bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver,
-                                              const string &PackageName,
-                                              const string &Version,
-                                              unsigned int Op,
-                                              unsigned int Type)
+bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg,
+                                  pkgCache::VerIterator &Ver,
+                                  string const &Version,
+                                  unsigned int const &Op,
+                                  unsigned int const &Type,
+                                  map_ptrloc* &OldDepLast)

 {
 {

-   pkgCache &Cache = Owner->Cache;
-   
+   void const * const oldMap = Map.Data();

    // Get a structure
    // Get a structure

-   unsigned long Dependency = Owner->Map.Allocate(sizeof(pkgCache::Dependency));
-   if (Dependency == 0)
+   map_ptrloc const Dependency = AllocateInMap(sizeof(pkgCache::Dependency));
+   if (unlikely(Dependency == 0))

       return false;
    
    // Fill it in
    pkgCache::DepIterator Dep(Cache,Cache.DepP + Dependency);
       return false;
    
    // Fill it in
    pkgCache::DepIterator Dep(Cache,Cache.DepP + Dependency);

+   Dynamic<pkgCache::DepIterator> DynDep(Dep);

    Dep->ParentVer = Ver.Index();
    Dep->Type = Type;
    Dep->CompareOp = Op;
    Dep->ID = Cache.HeaderP->DependsCount++;
    Dep->ParentVer = Ver.Index();
    Dep->Type = Type;
    Dep->CompareOp = Op;
    Dep->ID = Cache.HeaderP->DependsCount++;

-   
-   // Locate the target package
-   pkgCache::PkgIterator Pkg;
-   if (Owner->NewPackage(Pkg,PackageName) == false)
-      return false;
-   
+

    // Probe the reverse dependency list for a version string that matches
    if (Version.empty() == false)
    {
 /*      for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++)
         if (I->Version != 0 && I.TargetVer() == Version)
            Dep->Version = I->Version;*/
    // Probe the reverse dependency list for a version string that matches
    if (Version.empty() == false)
    {
 /*      for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++)
         if (I->Version != 0 && I.TargetVer() == Version)
            Dep->Version = I->Version;*/

-      if (Dep->Version == 0)
-        if ((Dep->Version = WriteString(Version)) == 0)
+      if (Dep->Version == 0) {
+        map_ptrloc const index = WriteStringInMap(Version);
+        if (unlikely(index == 0))

            return false;
            return false;

+        Dep->Version = index;
+      }

    }
    }

-      
+

    // Link it to the package
    Dep->Package = Pkg.Index();
    Dep->NextRevDepends = Pkg->RevDepends;
    Pkg->RevDepends = Dep.Index();
    // Link it to the package
    Dep->Package = Pkg.Index();
    Dep->NextRevDepends = Pkg->RevDepends;
    Pkg->RevDepends = Dep.Index();

-   
-   /* Link it to the version (at the end of the list)
-      Caching the old end point speeds up generation substantially */
-   if (OldDepVer != Ver)
+
+   // Do we know where to link the Dependency to?
+   if (OldDepLast == NULL)

    {
       OldDepLast = &Ver->DependsList;
    {
       OldDepLast = &Ver->DependsList;

-      for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
+      for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; ++D)

         OldDepLast = &D->NextDepends;
         OldDepLast = &D->NextDepends;

-      OldDepVer = Ver;
-   }
+   } else if (oldMap != Map.Data())
+      OldDepLast += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;

 
 

-   // Is it a file dependency?
-   if (PackageName[0] == '/')
-      FoundFileDeps = true;
-   

    Dep->NextDepends = *OldDepLast;
    *OldDepLast = Dep.Index();
    OldDepLast = &Dep->NextDepends;
    Dep->NextDepends = *OldDepLast;
    *OldDepLast = Dep.Index();
    OldDepLast = &Dep->NextDepends;


@@ -522,36 +847,77 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver,
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

+// ListParser::NewDepends - Create the environment for a new dependency        /*{{{*/
+// ---------------------------------------------------------------------
+/* This creates a Group and the Package to link this dependency to if
+   needed and handles also the caching of the old endpoint */
+bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator &Ver,
+                                              const string &PackageName,
+                                              const string &Arch,
+                                              const string &Version,
+                                              unsigned int Op,
+                                              unsigned int Type)
+{
+   pkgCache::GrpIterator Grp;
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
+   if (unlikely(Owner->NewGroup(Grp, PackageName) == false))
+      return false;
+
+   // Locate the target package
+   pkgCache::PkgIterator Pkg = Grp.FindPkg(Arch);
+   Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+   if (Pkg.end() == true) {
+      if (unlikely(Owner->NewPackage(Pkg, PackageName, Arch) == false))
+        return false;
+   }
+
+   // Is it a file dependency?
+   if (unlikely(PackageName[0] == '/'))
+      FoundFileDeps = true;
+
+   /* Caching the old end point speeds up generation substantially */
+   if (OldDepVer != Ver) {
+      OldDepLast = NULL;
+      OldDepVer = Ver;
+   }
+
+   return Owner->NewDepends(Pkg, Ver, Version, Op, Type, OldDepLast);
+}
+                                                                       /*}}}*/

 // ListParser::NewProvides - Create a Provides element                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ListParser::NewProvides - Create a Provides element                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver,
-                                               const string &PackageName,
+bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver,
+                                               const string &PkgName,
+                                               const string &PkgArch,

                                                const string &Version)
 {
    pkgCache &Cache = Owner->Cache;
 
    // We do not add self referencing provides
                                                const string &Version)
 {
    pkgCache &Cache = Owner->Cache;
 
    // We do not add self referencing provides

-   if (Ver.ParentPkg().Name() == PackageName)
+   if (Ver.ParentPkg().Name() == PkgName && (PkgArch == Ver.ParentPkg().Arch() ||
+       (PkgArch == "all" && strcmp((Cache.StrP + Cache.HeaderP->Architecture), Ver.ParentPkg().Arch()) == 0)))

       return true;
    
    // Get a structure
       return true;
    
    // Get a structure

-   unsigned long Provides = Owner->Map.Allocate(sizeof(pkgCache::Provides));
-   if (Provides == 0)
+   map_ptrloc const Provides = Owner->AllocateInMap(sizeof(pkgCache::Provides));
+   if (unlikely(Provides == 0))

       return false;
    Cache.HeaderP->ProvidesCount++;
    
    // Fill it in
    pkgCache::PrvIterator Prv(Cache,Cache.ProvideP + Provides,Cache.PkgP);
       return false;
    Cache.HeaderP->ProvidesCount++;
    
    // Fill it in
    pkgCache::PrvIterator Prv(Cache,Cache.ProvideP + Provides,Cache.PkgP);

+   Dynamic<pkgCache::PrvIterator> DynPrv(Prv);

    Prv->Version = Ver.Index();
    Prv->NextPkgProv = Ver->ProvidesList;
    Ver->ProvidesList = Prv.Index();
    Prv->Version = Ver.Index();
    Prv->NextPkgProv = Ver->ProvidesList;
    Ver->ProvidesList = Prv.Index();

-   if (Version.empty() == false && (Prv->ProvideVersion = WriteString(Version)) == 0)
+   if (Version.empty() == false && unlikely((Prv->ProvideVersion = WriteString(Version)) == 0))

       return false;
    
    // Locate the target package
    pkgCache::PkgIterator Pkg;
       return false;
    
    // Locate the target package
    pkgCache::PkgIterator Pkg;

-   if (Owner->NewPackage(Pkg,PackageName) == false)
+   Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+   if (unlikely(Owner->NewPackage(Pkg,PkgName, PkgArch) == false))

       return false;
    
    // Link it to the package
       return false;
    
    // Link it to the package


@@ -571,24 +937,29 @@ bool pkgCacheGenerator::SelectFile(const string &File,const string &Site,
                                   unsigned long Flags)
 {
    // Get some space for the structure
                                   unsigned long Flags)
 {
    // Get some space for the structure

-   CurrentFile = Cache.PkgFileP + Map.Allocate(sizeof(*CurrentFile));
-   if (CurrentFile == Cache.PkgFileP)
+   map_ptrloc const idxFile = AllocateInMap(sizeof(*CurrentFile));
+   if (unlikely(idxFile == 0))

       return false;
       return false;

-   
+   CurrentFile = Cache.PkgFileP + idxFile;
+

    // Fill it in
    // Fill it in

-   CurrentFile->FileName = Map.WriteString(File);
-   CurrentFile->Site = WriteUniqString(Site);
+   map_ptrloc const idxFileName = WriteStringInMap(File);
+   map_ptrloc const idxSite = WriteUniqString(Site);
+   if (unlikely(idxFileName == 0 || idxSite == 0))
+      return false;
+   CurrentFile->FileName = idxFileName;
+   CurrentFile->Site = idxSite;

    CurrentFile->NextFile = Cache.HeaderP->FileList;
    CurrentFile->Flags = Flags;
    CurrentFile->ID = Cache.HeaderP->PackageFileCount;
    CurrentFile->NextFile = Cache.HeaderP->FileList;
    CurrentFile->Flags = Flags;
    CurrentFile->ID = Cache.HeaderP->PackageFileCount;

-   CurrentFile->IndexType = WriteUniqString(Index.GetType()->Label);
+   map_ptrloc const idxIndexType = WriteUniqString(Index.GetType()->Label);
+   if (unlikely(idxIndexType == 0))
+      return false;
+   CurrentFile->IndexType = idxIndexType;

    PkgFileName = File;
    Cache.HeaderP->FileList = CurrentFile - Cache.PkgFileP;
    Cache.HeaderP->PackageFileCount++;
 
    PkgFileName = File;
    Cache.HeaderP->FileList = CurrentFile - Cache.PkgFileP;
    Cache.HeaderP->PackageFileCount++;
 

-   if (CurrentFile->FileName == 0)
-      return false;
-   

    if (Progress != 0)
       Progress->SubProgress(Index.Size());
    return true;
    if (Progress != 0)
       Progress->SubProgress(Index.Size());
    return true;


@@ -628,41 +999,64 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S,
    }
    
    // Get a structure
    }
    
    // Get a structure

-   unsigned long Item = Map.Allocate(sizeof(pkgCache::StringItem));
+   void const * const oldMap = Map.Data();
+   map_ptrloc const Item = AllocateInMap(sizeof(pkgCache::StringItem));

    if (Item == 0)
       return 0;
 
    if (Item == 0)
       return 0;
 

+   map_ptrloc const idxString = WriteStringInMap(S,Size);
+   if (unlikely(idxString == 0))
+      return 0;
+   if (oldMap != Map.Data()) {
+      Last += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+      I += (pkgCache::StringItem*) Map.Data() - (pkgCache::StringItem*) oldMap;
+   }
+   *Last = Item;
+

    // Fill in the structure
    pkgCache::StringItem *ItemP = Cache.StringItemP + Item;
    ItemP->NextItem = I - Cache.StringItemP;
    // Fill in the structure
    pkgCache::StringItem *ItemP = Cache.StringItemP + Item;
    ItemP->NextItem = I - Cache.StringItemP;

-   *Last = Item;
-   ItemP->String = Map.WriteString(S,Size);
-   if (ItemP->String == 0)
-      return 0;
-   
+   ItemP->String = idxString;
+

    Bucket = ItemP;
    return ItemP->String;
 }
                                                                        /*}}}*/
    Bucket = ItemP;
    return ItemP->String;
 }
                                                                        /*}}}*/

-

 // CheckValidity - Check that a cache is up-to-date                    /*{{{*/
 // ---------------------------------------------------------------------
 /* This just verifies that each file in the list of index files exists,
    has matching attributes with the cache and the cache does not have
    any extra files. */
 // CheckValidity - Check that a cache is up-to-date                    /*{{{*/
 // ---------------------------------------------------------------------
 /* This just verifies that each file in the list of index files exists,
    has matching attributes with the cache and the cache does not have
    any extra files. */

-static bool CheckValidity(const string &CacheFile, FileIterator Start, 
-                          FileIterator End,MMap **OutMap = 0)
+static bool CheckValidity(const string &CacheFile, 
+                          pkgSourceList &List,
+                          FileIterator Start, 
+                          FileIterator End,
+                          MMap **OutMap = 0)

 {
 {

+   bool const Debug = _config->FindB("Debug::pkgCacheGen", false);

    // No file, certainly invalid
    if (CacheFile.empty() == true || FileExists(CacheFile) == false)
    // No file, certainly invalid
    if (CacheFile.empty() == true || FileExists(CacheFile) == false)

+   {
+      if (Debug == true)
+        std::clog << "CacheFile doesn't exist" << std::endl;

       return false;
       return false;

-   
+   }
+
+   if (List.GetLastModifiedTime() > GetModificationTime(CacheFile))
+   {
+      if (Debug == true)
+        std::clog << "sources.list is newer than the cache" << std::endl;
+      return false;
+   }
+

    // Map it
    FileFd CacheF(CacheFile,FileFd::ReadOnly);
    // Map it
    FileFd CacheF(CacheFile,FileFd::ReadOnly);

-   SPtr<MMap> Map = new MMap(CacheF,MMap::Public | MMap::ReadOnly);
+   SPtr<MMap> Map = new MMap(CacheF,0);

    pkgCache Cache(Map);
    if (_error->PendingError() == true || Map->Size() == 0)
    {
    pkgCache Cache(Map);
    if (_error->PendingError() == true || Map->Size() == 0)
    {

+      if (Debug == true)
+        std::clog << "Errors are pending or Map is empty()" << std::endl;

       _error->Discard();
       return false;
    }
       _error->Discard();
       return false;
    }


@@ -671,10 +1065,16 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start,
       verify the IMS data and check that it is on the disk too.. */
    SPtrArray<bool> Visited = new bool[Cache.HeaderP->PackageFileCount];
    memset(Visited,0,sizeof(*Visited)*Cache.HeaderP->PackageFileCount);
       verify the IMS data and check that it is on the disk too.. */
    SPtrArray<bool> Visited = new bool[Cache.HeaderP->PackageFileCount];
    memset(Visited,0,sizeof(*Visited)*Cache.HeaderP->PackageFileCount);

-   for (; Start != End; Start++)
-   {      
+   for (; Start != End; ++Start)
+   {
+      if (Debug == true)
+        std::clog << "Checking PkgFile " << (*Start)->Describe() << ": ";

       if ((*Start)->HasPackages() == false)
       if ((*Start)->HasPackages() == false)

+      {
+         if (Debug == true)
+           std::clog << "Has NO packages" << std::endl;

         continue;
         continue;

+      }

     
       if ((*Start)->Exists() == false)
       {
     
       if ((*Start)->Exists() == false)
       {


@@ -682,23 +1082,40 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start,
         _error->WarningE("stat",_("Couldn't stat source package list %s"),
                          (*Start)->Describe().c_str());
 #endif
         _error->WarningE("stat",_("Couldn't stat source package list %s"),
                          (*Start)->Describe().c_str());
 #endif

+         if (Debug == true)
+           std::clog << "file doesn't exist" << std::endl;

         continue;
       }
 
       // FindInCache is also expected to do an IMS check.
       pkgCache::PkgFileIterator File = (*Start)->FindInCache(Cache);
       if (File.end() == true)
         continue;
       }
 
       // FindInCache is also expected to do an IMS check.
       pkgCache::PkgFileIterator File = (*Start)->FindInCache(Cache);
       if (File.end() == true)

+      {
+        if (Debug == true)
+           std::clog << "FindInCache returned end-Pointer" << std::endl;

         return false;
         return false;

+      }

 
       Visited[File->ID] = true;
 
       Visited[File->ID] = true;

+      if (Debug == true)
+        std::clog << "with ID " << File->ID << " is valid" << std::endl;

    }
    
    for (unsigned I = 0; I != Cache.HeaderP->PackageFileCount; I++)
       if (Visited[I] == false)
    }
    
    for (unsigned I = 0; I != Cache.HeaderP->PackageFileCount; I++)
       if (Visited[I] == false)

+      {
+        if (Debug == true)
+           std::clog << "File with ID" << I << " wasn't visited" << std::endl;

         return false;
         return false;

+      }

    
    if (_error->PendingError() == true)
    {
    
    if (_error->PendingError() == true)
    {

+      if (Debug == true)
+      {
+        std::clog << "Validity failed because of pending errors:" << std::endl;
+        _error->DumpErrors();
+      }

       _error->Discard();
       return false;
    }
       _error->Discard();
       return false;
    }


@@ -715,7 +1132,7 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start,
 static unsigned long ComputeSize(FileIterator Start,FileIterator End)
 {
    unsigned long TotalSize = 0;
 static unsigned long ComputeSize(FileIterator Start,FileIterator End)
 {
    unsigned long TotalSize = 0;

-   for (; Start != End; Start++)
+   for (; Start != End; ++Start)

    {
       if ((*Start)->HasPackages() == false)
         continue;      
    {
       if ((*Start)->HasPackages() == false)
         continue;      


@@ -728,12 +1145,12 @@ static unsigned long ComputeSize(FileIterator Start,FileIterator End)
 // ---------------------------------------------------------------------
 /* */
 static bool BuildCache(pkgCacheGenerator &Gen,
 // ---------------------------------------------------------------------
 /* */
 static bool BuildCache(pkgCacheGenerator &Gen,

-                      OpProgress &Progress,
+                      OpProgress *Progress,

                       unsigned long &CurrentSize,unsigned long TotalSize,
                       FileIterator Start, FileIterator End)
 {
    FileIterator I;
                       unsigned long &CurrentSize,unsigned long TotalSize,
                       FileIterator Start, FileIterator End)
 {
    FileIterator I;

-   for (I = Start; I != End; I++)
+   for (I = Start; I != End; ++I)

    {
       if ((*I)->HasPackages() == false)
         continue;
    {
       if ((*I)->HasPackages() == false)
         continue;


@@ -749,7 +1166,8 @@ static bool BuildCache(pkgCacheGenerator &Gen,
       }
       
       unsigned long Size = (*I)->Size();
       }
       
       unsigned long Size = (*I)->Size();

-      Progress.OverallProgress(CurrentSize,TotalSize,Size,_("Reading package lists"));
+      if (Progress != NULL)
+        Progress->OverallProgress(CurrentSize,TotalSize,Size,_("Reading package lists"));

       CurrentSize += Size;
       
       if ((*I)->Merge(Gen,Progress) == false)
       CurrentSize += Size;
       
       if ((*I)->Merge(Gen,Progress) == false)


@@ -758,13 +1176,15 @@ static bool BuildCache(pkgCacheGenerator &Gen,
 
    if (Gen.HasFileDeps() == true)
    {
 
    if (Gen.HasFileDeps() == true)
    {

-      Progress.Done();
+      if (Progress != NULL)
+        Progress->Done();

       TotalSize = ComputeSize(Start, End);
       CurrentSize = 0;
       TotalSize = ComputeSize(Start, End);
       CurrentSize = 0;

-      for (I = Start; I != End; I++)
+      for (I = Start; I != End; ++I)

       {
         unsigned long Size = (*I)->Size();
       {
         unsigned long Size = (*I)->Size();

-        Progress.OverallProgress(CurrentSize,TotalSize,Size,_("Collecting File Provides"));
+        if (Progress != NULL)
+           Progress->OverallProgress(CurrentSize,TotalSize,Size,_("Collecting File Provides"));

         CurrentSize += Size;
         if ((*I)->MergeFileProvides(Gen,Progress) == false)
            return false;
         CurrentSize += Size;
         if ((*I)->MergeFileProvides(Gen,Progress) == false)
            return false;


@@ -774,7 +1194,21 @@ static bool BuildCache(pkgCacheGenerator &Gen,
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-// MakeStatusCache - Construct the status cache                                /*{{{*/
+// CacheGenerator::CreateDynamicMMap - load an mmap with configuration options /*{{{*/
+DynamicMMap* pkgCacheGenerator::CreateDynamicMMap(FileFd *CacheF, unsigned long Flags) {
+   unsigned long const MapStart = _config->FindI("APT::Cache-Start", 24*1024*1024);
+   unsigned long const MapGrow = _config->FindI("APT::Cache-Grow", 1*1024*1024);
+   unsigned long const MapLimit = _config->FindI("APT::Cache-Limit", 0);
+   Flags |= MMap::Moveable;
+   if (_config->FindB("APT::Cache-Fallback", false) == true)
+      Flags |= MMap::Fallback;
+   if (CacheF != NULL)
+      return new DynamicMMap(*CacheF, Flags, MapStart, MapGrow, MapLimit);
+   else
+      return new DynamicMMap(Flags, MapStart, MapGrow, MapLimit);
+}
+                                                                       /*}}}*/
+// CacheGenerator::MakeStatusCache - Construct the status cache                /*{{{*/

 // ---------------------------------------------------------------------
 /* This makes sure that the status cache (the cache that has all 
    index files from the sources list and all local ones) is ready
 // ---------------------------------------------------------------------
 /* This makes sure that the status cache (the cache that has all 
    index files from the sources list and all local ones) is ready


@@ -782,31 +1216,47 @@ static bool BuildCache(pkgCacheGenerator &Gen,
    the cache will be stored there. This is pretty much mandetory if you
    are using AllowMem. AllowMem lets the function be run as non-root
    where it builds the cache 'fast' into a memory buffer. */
    the cache will be stored there. This is pretty much mandetory if you
    are using AllowMem. AllowMem lets the function be run as non-root
    where it builds the cache 'fast' into a memory buffer. */

-bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
+__deprecated bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
+                       MMap **OutMap, bool AllowMem)
+   { return pkgCacheGenerator::MakeStatusCache(List, &Progress, OutMap, AllowMem); }
+bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress,

                        MMap **OutMap,bool AllowMem)
 {
                        MMap **OutMap,bool AllowMem)
 {

-   unsigned long MapSize = _config->FindI("APT::Cache-Limit",16*1024*1024);
-   
-   vector<pkgIndexFile *> Files;
-   for (vector<metaIndex *>::const_iterator i = List.begin();
+   bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
+
+   std::vector<pkgIndexFile *> Files;
+   for (std::vector<metaIndex *>::const_iterator i = List.begin();

         i != List.end();
         i != List.end();

-        i++)
+        ++i)

    {
    {

-      vector <pkgIndexFile *> *Indexes = (*i)->GetIndexFiles();
-      for (vector<pkgIndexFile *>::const_iterator j = Indexes->begin();
+      std::vector <pkgIndexFile *> *Indexes = (*i)->GetIndexFiles();
+      for (std::vector<pkgIndexFile *>::const_iterator j = Indexes->begin();

           j != Indexes->end();
           j != Indexes->end();

-          j++)
+          ++j)

          Files.push_back (*j);
    }
    
          Files.push_back (*j);
    }
    

-   unsigned long EndOfSource = Files.size();
+   unsigned long const EndOfSource = Files.size();

    if (_system->AddStatusFiles(Files) == false)
       return false;
    if (_system->AddStatusFiles(Files) == false)
       return false;

-   
+

    // Decide if we can write to the files..
    // Decide if we can write to the files..

-   string CacheFile = _config->FindFile("Dir::Cache::pkgcache");
-   string SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
-   
+   string const CacheFile = _config->FindFile("Dir::Cache::pkgcache");
+   string const SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
+
+   // ensure the cache directory exists
+   if (CacheFile.empty() == false || SrcCacheFile.empty() == false)
+   {
+      string dir = _config->FindDir("Dir::Cache");
+      size_t const len = dir.size();
+      if (len > 5 && dir.find("/apt/", len - 6, 5) == len - 5)
+        dir = dir.substr(0, len - 5);
+      if (CacheFile.empty() == false)
+        CreateDirectory(dir, flNotFile(CacheFile));
+      if (SrcCacheFile.empty() == false)
+        CreateDirectory(dir, flNotFile(SrcCacheFile));
+   }
+

    // Decide if we can write to the cache
    bool Writeable = false;
    if (CacheFile.empty() == false)
    // Decide if we can write to the cache
    bool Writeable = false;
    if (CacheFile.empty() == false)


@@ -814,18 +1264,26 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    else
       if (SrcCacheFile.empty() == false)
         Writeable = access(flNotFile(SrcCacheFile).c_str(),W_OK) == 0;
    else
       if (SrcCacheFile.empty() == false)
         Writeable = access(flNotFile(SrcCacheFile).c_str(),W_OK) == 0;

-   
+   if (Debug == true)
+      std::clog << "Do we have write-access to the cache files? " << (Writeable ? "YES" : "NO") << std::endl;
+

    if (Writeable == false && AllowMem == false && CacheFile.empty() == false)
       return _error->Error(_("Unable to write to %s"),flNotFile(CacheFile).c_str());
    if (Writeable == false && AllowMem == false && CacheFile.empty() == false)
       return _error->Error(_("Unable to write to %s"),flNotFile(CacheFile).c_str());

-   
-   Progress.OverallProgress(0,1,1,_("Reading package lists"));
-   
+
+   if (Progress != NULL)
+      Progress->OverallProgress(0,1,1,_("Reading package lists"));
+

    // Cache is OK, Fin.
    // Cache is OK, Fin.

-   if (CheckValidity(CacheFile,Files.begin(),Files.end(),OutMap) == true)
+   if (CheckValidity(CacheFile, List, Files.begin(),Files.end(),OutMap) == true)

    {
    {

-      Progress.OverallProgress(1,1,1,_("Reading package lists"));
+      if (Progress != NULL)
+        Progress->OverallProgress(1,1,1,_("Reading package lists"));
+      if (Debug == true)
+        std::clog << "pkgcache.bin is valid - no need to build anything" << std::endl;

       return true;
    }
       return true;
    }

+   else if (Debug == true)
+        std::clog << "pkgcache.bin is NOT valid" << std::endl;

    
    /* At this point we know we need to reconstruct the package cache,
       begin. */
    
    /* At this point we know we need to reconstruct the package cache,
       begin. */


@@ -833,35 +1291,59 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    SPtr<DynamicMMap> Map;
    if (Writeable == true && CacheFile.empty() == false)
    {
    SPtr<DynamicMMap> Map;
    if (Writeable == true && CacheFile.empty() == false)
    {

+      _error->PushToStack();

       unlink(CacheFile.c_str());
       unlink(CacheFile.c_str());

-      CacheF = new FileFd(CacheFile,FileFd::WriteEmpty);
+      CacheF = new FileFd(CacheFile,FileFd::WriteAtomic);

       fchmod(CacheF->Fd(),0644);
       fchmod(CacheF->Fd(),0644);

-      Map = new DynamicMMap(*CacheF,MMap::Public,MapSize);
+      Map = CreateDynamicMMap(CacheF, MMap::Public);

       if (_error->PendingError() == true)
       if (_error->PendingError() == true)

-        return false;
+      {
+        delete CacheF.UnGuard();
+        delete Map.UnGuard();
+        if (Debug == true)
+           std::clog << "Open filebased MMap FAILED" << std::endl;
+        Writeable = false;
+        if (AllowMem == false)
+        {
+           _error->MergeWithStack();
+           return false;
+        }
+        _error->RevertToStack();
+      }
+      else if (Debug == true)
+      {
+        _error->MergeWithStack();
+        std::clog << "Open filebased MMap" << std::endl;
+      }

    }
    }

-   else
+   if (Writeable == false || CacheFile.empty() == true)

    {
       // Just build it in memory..
    {
       // Just build it in memory..

-      Map = new DynamicMMap(MMap::Public,MapSize);
+      Map = CreateDynamicMMap(NULL);
+      if (Debug == true)
+        std::clog << "Open memory Map (not filebased)" << std::endl;

    }
    
    // Lets try the source cache.
    unsigned long CurrentSize = 0;
    unsigned long TotalSize = 0;
    }
    
    // Lets try the source cache.
    unsigned long CurrentSize = 0;
    unsigned long TotalSize = 0;

-   if (CheckValidity(SrcCacheFile,Files.begin(),
+   if (CheckValidity(SrcCacheFile, List, Files.begin(),

                     Files.begin()+EndOfSource) == true)
    {
                     Files.begin()+EndOfSource) == true)
    {

+      if (Debug == true)
+        std::clog << "srcpkgcache.bin is valid - populate MMap with it." << std::endl;

       // Preload the map with the source cache
       FileFd SCacheF(SrcCacheFile,FileFd::ReadOnly);
       // Preload the map with the source cache
       FileFd SCacheF(SrcCacheFile,FileFd::ReadOnly);

-      if (SCacheF.Read((unsigned char *)Map->Data() + Map->RawAllocate(SCacheF.Size()),
-                      SCacheF.Size()) == false)
+      unsigned long const alloc = Map->RawAllocate(SCacheF.Size());
+      if ((alloc == 0 && _error->PendingError())
+               || SCacheF.Read((unsigned char *)Map->Data() + alloc,
+                               SCacheF.Size()) == false)

         return false;
 
       TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
         return false;
 
       TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());

-      
+

       // Build the status cache
       // Build the status cache

-      pkgCacheGenerator Gen(Map.Get(),&Progress);
+      pkgCacheGenerator Gen(Map.Get(),Progress);

       if (_error->PendingError() == true)
         return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
       if (_error->PendingError() == true)
         return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,


@@ -870,10 +1352,12 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    }
    else
    {
    }
    else
    {

+      if (Debug == true)
+        std::clog << "srcpkgcache.bin is NOT valid - rebuild" << std::endl;

       TotalSize = ComputeSize(Files.begin(),Files.end());
       
       // Build the source cache
       TotalSize = ComputeSize(Files.begin(),Files.end());
       
       // Build the source cache

-      pkgCacheGenerator Gen(Map.Get(),&Progress);
+      pkgCacheGenerator Gen(Map.Get(),Progress);

       if (_error->PendingError() == true)
         return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
       if (_error->PendingError() == true)
         return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,


@@ -883,7 +1367,7 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       // Write it back
       if (Writeable == true && SrcCacheFile.empty() == false)
       {
       // Write it back
       if (Writeable == true && SrcCacheFile.empty() == false)
       {

-        FileFd SCacheF(SrcCacheFile,FileFd::WriteEmpty);
+        FileFd SCacheF(SrcCacheFile,FileFd::WriteAtomic);

         if (_error->PendingError() == true)
            return false;
         
         if (_error->PendingError() == true)
            return false;
         


@@ -908,6 +1392,8 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
                     Files.begin()+EndOfSource,Files.end()) == false)
         return false;
    }
                     Files.begin()+EndOfSource,Files.end()) == false)
         return false;
    }

+   if (Debug == true)
+      std::clog << "Caches are ready for shipping" << std::endl;

 
    if (_error->PendingError() == true)
       return false;
 
    if (_error->PendingError() == true)
       return false;


@@ -916,7 +1402,7 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       if (CacheF != 0)
       {
         delete Map.UnGuard();
       if (CacheF != 0)
       {
         delete Map.UnGuard();

-        *OutMap = new MMap(*CacheF,MMap::Public | MMap::ReadOnly);
+        *OutMap = new MMap(*CacheF,0);

       }
       else
       {
       }
       else
       {


@@ -927,33 +1413,34 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-// MakeOnlyStatusCache - Build a cache with just the status files      /*{{{*/
+// CacheGenerator::MakeOnlyStatusCache - Build only a status files cache/*{{{*/

 // ---------------------------------------------------------------------
 /* */
 // ---------------------------------------------------------------------
 /* */

-bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap)
+__deprecated bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap)
+   { return pkgCacheGenerator::MakeOnlyStatusCache(&Progress, OutMap); }
+bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap)

 {
 {

-   unsigned long MapSize = _config->FindI("APT::Cache-Limit",12*1024*1024);
-   vector<pkgIndexFile *> Files;
+   std::vector<pkgIndexFile *> Files;

    unsigned long EndOfSource = Files.size();
    if (_system->AddStatusFiles(Files) == false)
       return false;
    unsigned long EndOfSource = Files.size();
    if (_system->AddStatusFiles(Files) == false)
       return false;

-   
-   SPtr<DynamicMMap> Map;   
-   Map = new DynamicMMap(MMap::Public,MapSize);
+
+   SPtr<DynamicMMap> Map = CreateDynamicMMap(NULL);

    unsigned long CurrentSize = 0;
    unsigned long TotalSize = 0;
    
    TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
    
    // Build the status cache
    unsigned long CurrentSize = 0;
    unsigned long TotalSize = 0;
    
    TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
    
    // Build the status cache

-   Progress.OverallProgress(0,1,1,_("Reading package lists"));
-   pkgCacheGenerator Gen(Map.Get(),&Progress);
+   if (Progress != NULL)
+      Progress->OverallProgress(0,1,1,_("Reading package lists"));
+   pkgCacheGenerator Gen(Map.Get(),Progress);

    if (_error->PendingError() == true)
       return false;
    if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
                  Files.begin()+EndOfSource,Files.end()) == false)
       return false;
    if (_error->PendingError() == true)
       return false;
    if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
                  Files.begin()+EndOfSource,Files.end()) == false)
       return false;

-   
+

    if (_error->PendingError() == true)
       return false;
    *OutMap = Map.UnGuard();
    if (_error->PendingError() == true)
       return false;
    *OutMap = Map.UnGuard();


@@ -961,3 +1448,22 @@ bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap)
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

+// IsDuplicateDescription                                              /*{{{*/
+bool IsDuplicateDescription(pkgCache::DescIterator Desc,
+                           MD5SumValue const &CurMd5, std::string const &CurLang)
+{
+   // Descriptions in the same link-list have all the same md5
+   if (MD5SumValue(Desc.md5()) != CurMd5)
+      return false;
+   for (; Desc.end() == false; ++Desc)
+      if (Desc.LanguageCode() == CurLang)
+        return true;
+   return false;
+}
+                                                                       /*}}}*/
+// CacheGenerator::FinishCache                                         /*{{{*/
+bool pkgCacheGenerator::FinishCache(OpProgress *Progress)
+{
+   return true;
+}
+                                                                       /*}}}*/