merged r1970 lp:~vorlon/apt/lp.968828
[apt.git] / apt-pkg / pkgcachegen.cc
index 7ca8fbfdaa27b6afd00b959f5a005fd3ebea6b03..ec072fddd76ac5bd9757673c4c76c0ce36e8c20d 100644 (file)
@@ -10,7 +10,7 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#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>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/macros.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 <apti18n.h>
                                                                        /*}}}*/
                                                                        /*}}}*/
-typedef vector<pkgIndexFile *>::iterator FileIterator;
-template <typename Iter> std::set<Iter*> pkgCacheGenerator::Dynamic<Iter>::toReMap;
+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                     /*{{{*/
 // ---------------------------------------------------------------------
@@ -98,6 +103,7 @@ 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));
 }
                                                                        /*}}}*/
@@ -105,6 +111,9 @@ void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newM
    if (oldMap == newMap)
       return;
 
    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;
    Cache.ReMap(false);
 
    CurrentFile += (pkgCache::PackageFile*) newMap - (pkgCache::PackageFile*) oldMap;
@@ -113,27 +122,27 @@ void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newM
       if (UniqHash[i] != 0)
         UniqHash[i] += (pkgCache::StringItem*) newMap - (pkgCache::StringItem*) oldMap;
 
       if (UniqHash[i] != 0)
         UniqHash[i] += (pkgCache::StringItem*) newMap - (pkgCache::StringItem*) oldMap;
 
-   for (std::set<pkgCache::GrpIterator*>::const_iterator i = Dynamic<pkgCache::GrpIterator>::toReMap.begin();
+   for (std::vector<pkgCache::GrpIterator*>::const_iterator i = Dynamic<pkgCache::GrpIterator>::toReMap.begin();
        i != Dynamic<pkgCache::GrpIterator>::toReMap.end(); ++i)
        i != Dynamic<pkgCache::GrpIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
-   for (std::set<pkgCache::PkgIterator*>::const_iterator i = Dynamic<pkgCache::PkgIterator>::toReMap.begin();
+      (*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 != Dynamic<pkgCache::PkgIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
-   for (std::set<pkgCache::VerIterator*>::const_iterator i = Dynamic<pkgCache::VerIterator>::toReMap.begin();
+      (*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 != Dynamic<pkgCache::VerIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
-   for (std::set<pkgCache::DepIterator*>::const_iterator i = Dynamic<pkgCache::DepIterator>::toReMap.begin();
+      (*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 != Dynamic<pkgCache::DepIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
-   for (std::set<pkgCache::DescIterator*>::const_iterator i = Dynamic<pkgCache::DescIterator>::toReMap.begin();
+      (*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 != Dynamic<pkgCache::DescIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
-   for (std::set<pkgCache::PrvIterator*>::const_iterator i = Dynamic<pkgCache::PrvIterator>::toReMap.begin();
+      (*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 != Dynamic<pkgCache::PrvIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
-   for (std::set<pkgCache::PkgFileIterator*>::const_iterator i = Dynamic<pkgCache::PkgFileIterator>::toReMap.begin();
+      (*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 != Dynamic<pkgCache::PkgFileIterator>::toReMap.end(); ++i)
-      (*i)->ReOwn(Cache, oldMap, newMap);
+      (*i)->ReMap(oldMap, newMap);
 }                                                                      /*}}}*/
 // CacheGenerator::WriteStringInMap                                    /*{{{*/
 map_ptrloc pkgCacheGenerator::WriteStringInMap(const char *String,
 }                                                                      /*}}}*/
 // CacheGenerator::WriteStringInMap                                    /*{{{*/
 map_ptrloc pkgCacheGenerator::WriteStringInMap(const char *String,
@@ -178,93 +187,154 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
       if (PackageName.empty() == true)
         return false;
 
       if (PackageName.empty() == true)
         return false;
 
-      /* As we handle Arch all packages as architecture bounded
-         we add all information to every (simulated) arch package */
-      std::vector<string> genArch;
-      if (List.ArchitectureAll() == true) {
-        genArch = APT::Configuration::getArchitectures();
-        if (genArch.size() != 1)
-           genArch.push_back("all");
-      } else
-        genArch.push_back(List.Architecture());
-
-      for (std::vector<string>::const_iterator arch = genArch.begin();
-          arch != genArch.end(); ++arch)
+      Counter++;
+      if (Counter % 100 == 0 && Progress != 0)
+        Progress->Progress(List.Offset());
+
+      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);
       // Get a pointer to the package structure
       pkgCache::PkgIterator Pkg;
       Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
-      if (NewPackage(Pkg, PackageName, *arch) == false)
-        return _error->Error(_("Error occurred while processing %s (NewPackage)"),PackageName.c_str());
-      Counter++;
-      if (Counter % 100 == 0 && Progress != 0)
-        Progress->Progress(List.Offset());
+      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);
+
 
 
-      /* 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();
       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)
-        pkgCache::VerIterator Ver(Cache);
-        Dynamic<pkgCache::VerIterator> DynVer(Ver);
-        if (List.UsePackage(Pkg, Ver) == 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();
-        Ver = Pkg.VersionList();
-
-        for (; Ver.end() == false; ++Ver)
-        {
-           pkgCache::DescIterator Desc = Ver.DescriptionList();
-           Dynamic<pkgCache::DescIterator> DynDesc(Desc);
-           map_ptrloc *LastDesc = &Ver->DescriptionList;
-           bool duplicate=false;
-
-           // don't add a new description if we have one for the given
-           // md5 && language
-           for ( ; Desc.end() == false; Desc++)
-              if (MD5SumValue(Desc.md5()) == CurMd5 && 
-                  Desc.LanguageCode() == List.DescriptionLanguage())
-                 duplicate=true;
-           if(duplicate)
-              continue;
-           
-           for (Desc = Ver.DescriptionList();
-                Desc.end() == false;
-                LastDesc = &Desc->NextDesc, Desc++)
-           {
-              if (MD5SumValue(Desc.md5()) == CurMd5) 
-               {
-                 // Add new description
-                 void const * const oldMap = Map.Data();
-                 map_ptrloc const descindex = NewDescription(Desc, List.DescriptionLanguage(), 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 (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();
-      Dynamic<pkgCache::VerIterator> DynVer(Ver);
-      map_ptrloc *LastVer = &Pkg->VersionList;
-      void const * oldMap = Map.Data();
+   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;
       int Res = 1;
-      unsigned long const Hash = List.VersionHash();
       for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
       {
         Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
       for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
       {
         Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
@@ -282,95 +352,123 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
       if (Res == 0 && Ver.end() == false && Ver->Hash == Hash)
       {
         if (List.UsePackage(Pkg,Ver) == false)
       if (Res == 0 && Ver.end() == false && Ver->Hash == Hash)
       {
         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;
+
+        return true;
       }
       }
+   }
 
 
-      // 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 (NewVersion%d)"),
-                             PackageName.c_str(), 1);
+   // 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 (oldMap != Map.Data())
+   if (oldMap != Map.Data())
         LastVer += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
         LastVer += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
-      *LastVer = verindex;
-      Ver->ParentPkg = Pkg.Index();
-      Ver->Hash = Hash;
+   *LastVer = verindex;
+   Ver->ParentPkg = Pkg.Index();
+   Ver->Hash = Hash;
 
 
-      if (List.NewVersion(Ver) == false)
-        return _error->Error(_("Error occurred while processing %s (NewVersion%d)"),
-                             PackageName.c_str(), 2);
+   if (unlikely(List.NewVersion(Ver) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "NewVersion", 2);
 
 
-      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 (NewVersion%d)"),
-                             PackageName.c_str(), 3);
+   if (unlikely(List.UsePackage(Pkg,Ver) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "UsePackage", 3);
 
 
-      // Read only a single record and return
-      if (OutVer != 0)
-      {
-        *OutVer = Ver;
-        FoundFileDeps |= List.HasFileDeps();
-        return true;
-      }      
+   if (unlikely(NewFileVer(Ver,List) == false))
+      return _error->Error(_("Error occurred while processing %s (%s%d)"),
+                          Pkg.Name(), "NewFileVer", 2);
 
 
-      /* Record the Description data. Description data always exist in
-        Packages and Translation-* files. */
-      pkgCache::DescIterator Desc = Ver.DescriptionList();
-      Dynamic<pkgCache::DescIterator> DynDesc(Desc);
-      map_ptrloc *LastDesc = &Ver->DescriptionList;
+   pkgCache::GrpIterator Grp = Pkg.Group();
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
 
 
-      // Skip to the end of description set
-      for (; Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++);
+   /* 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))
+      {
+        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);
 
 
-      // Add new description
-      oldMap = Map.Data();
-      map_ptrloc const descindex = NewDescription(Desc, List.DescriptionLanguage(), List.Description_md5(), *LastDesc);
-      if (oldMap != Map.Data())
-        LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
-      *LastDesc = descindex;
-      Desc->ParentPkg = Pkg.Index();
+   // Read only a single record and return
+   if (OutVer != 0)
+   {
+      *OutVer = Ver;
+      return true;
+   }
 
 
-      if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false)
-        return _error->Error(_("Error occurred while processing %s (NewFileDesc2)"),PackageName.c_str());
+   /* Record the Description (it is not translated) */
+   MD5SumValue CurMd5 = List.Description_md5();
+   if (CurMd5.Value().empty() == true)
+      return true;
+   std::string CurLang = List.DescriptionLanguage();
+
+   /* 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 
@@ -395,8 +493,8 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
       pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);
       Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
       if (Pkg.end() == true)
       pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);
       Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
       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());
       Counter++;
       if (Counter % 100 == 0 && Progress != 0)
         Progress->Progress(List.Offset());
@@ -404,12 +502,13 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
       unsigned long Hash = List.VersionHash();
       pkgCache::VerIterator Ver = Pkg.VersionList();
       Dynamic<pkgCache::VerIterator> DynVer(Ver);
       unsigned long Hash = List.VersionHash();
       pkgCache::VerIterator Ver = Pkg.VersionList();
       Dynamic<pkgCache::VerIterator> DynVer(Ver);
-      for (; Ver.end() == false; 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;
         }
       }
@@ -491,7 +590,8 @@ bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name
    // Set the name, arch and the ID
    Pkg->Name = Grp->Name;
    Pkg->Group = Grp.Index();
    // Set the name, arch and the ID
    Pkg->Name = Grp->Name;
    Pkg->Group = Grp.Index();
-   map_ptrloc const idxArch = WriteUniqString(Arch.c_str());
+   // 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;
    if (unlikely(idxArch == 0))
       return false;
    Pkg->Arch = idxArch;
@@ -499,6 +599,75 @@ bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name
 
    return true;
 }
 
    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;
+}
+
                                                                        /*}}}*/
 // CacheGenerator::NewFileVer - Create a new File<->Version association        /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // CacheGenerator::NewFileVer - Create a new File<->Version association        /*{{{*/
 // ---------------------------------------------------------------------
@@ -519,7 +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();
@@ -576,7 +745,7 @@ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc,
 
    // Link it to the end of the list
    map_ptrloc *Last = &Desc->FileList;
 
    // 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;
@@ -618,86 +787,6 @@ map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc,
    return Description;
 }
                                                                        /*}}}*/
    return Description;
 }
                                                                        /*}}}*/
-// CacheGenerator::FinishCache - do various finish operations          /*{{{*/
-// ---------------------------------------------------------------------
-/* This prepares the Cache for delivery */
-bool pkgCacheGenerator::FinishCache(OpProgress *Progress)
-{
-   // FIXME: add progress reporting for this operation
-   // Do we have different architectures in your groups ?
-   vector<string> archs = APT::Configuration::getArchitectures();
-   if (archs.size() > 1)
-   {
-      // Create Conflicts in between the group
-      pkgCache::GrpIterator G = GetCache().GrpBegin();
-      Dynamic<pkgCache::GrpIterator> DynG(G);
-      for (; G.end() != true; G++)
-      {
-        string const PkgName = G.Name();
-        pkgCache::PkgIterator P = G.PackageList();
-        Dynamic<pkgCache::PkgIterator> DynP(P);
-        for (; P.end() != true; P = G.NextPkg(P))
-        {
-           if (strcmp(P.Arch(),"all") == 0)
-              continue;
-           pkgCache::PkgIterator allPkg;
-           Dynamic<pkgCache::PkgIterator> DynallPkg(allPkg);
-           pkgCache::VerIterator V = P.VersionList();
-           Dynamic<pkgCache::VerIterator> DynV(V);
-           for (; V.end() != true; V++)
-           {
-              string const Arch = V.Arch(true);
-              map_ptrloc *OldDepLast = NULL;
-              /* MultiArch handling introduces a lot of implicit Dependencies:
-               - MultiArch: same → Co-Installable if they have the same version
-               - Architecture: all → Need to be Co-Installable for internal reasons
-               - All others conflict with all other group members */
-              bool const coInstall = (V->MultiArch == pkgCache::Version::All ||
-                                       V->MultiArch == pkgCache::Version::Same);
-              if (V->MultiArch == pkgCache::Version::All && allPkg.end() == true)
-                 allPkg = G.FindPkg("all");
-              for (vector<string>::const_iterator A = archs.begin(); A != archs.end(); ++A)
-              {
-                 if (*A == Arch)
-                    continue;
-                 /* We allow only one installed arch at the time
-                    per group, therefore each group member conflicts
-                    with all other group members */
-                 pkgCache::PkgIterator D = G.FindPkg(*A);
-                 Dynamic<pkgCache::PkgIterator> DynD(D);
-                 if (D.end() == true)
-                    continue;
-                 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);
-                    if (V->MultiArch == pkgCache::Version::All)
-                    {
-                       // Depend on ${self}:all which does depend on nothing
-                       NewDepends(allPkg, V, V.VerStr(),
-                                  pkgCache::Dep::Equals, pkgCache::Dep::Depends,
-                                  OldDepLast);
-                    }
-                 } else {
-                       // Conflicts: ${self}:other
-                       NewDepends(D, V, "",
-                                  pkgCache::Dep::NoOp, pkgCache::Dep::Conflicts,
-                                  OldDepLast);
-                 }
-              }
-           }
-        }
-      }
-   }
-   return true;
-}
-                                                                       /*}}}*/
 // CacheGenerator::NewDepends - Create a dependency element            /*{{{*/
 // ---------------------------------------------------------------------
 /* This creates a dependency element in the tree. It is linked to the
 // CacheGenerator::NewDepends - Create a dependency element            /*{{{*/
 // ---------------------------------------------------------------------
 /* This creates a dependency element in the tree. It is linked to the
@@ -707,7 +796,7 @@ bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg,
                                   string const &Version,
                                   unsigned int const &Op,
                                   unsigned int const &Type,
                                   string const &Version,
                                   unsigned int const &Op,
                                   unsigned int const &Type,
-                                  map_ptrloc *OldDepLast)
+                                  map_ptrloc* &OldDepLast)
 {
    void const * const oldMap = Map.Data();
    // Get a structure
 {
    void const * const oldMap = Map.Data();
    // Get a structure
@@ -746,7 +835,7 @@ bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg,
    if (OldDepLast == NULL)
    {
       OldDepLast = &Ver->DependsList;
    if (OldDepLast == NULL)
    {
       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;
    } else if (oldMap != Map.Data())
       OldDepLast += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
         OldDepLast = &D->NextDepends;
    } else if (oldMap != Map.Data())
       OldDepLast += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
@@ -806,7 +895,8 @@ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver,
    pkgCache &Cache = Owner->Cache;
 
    // We do not add self referencing provides
    pkgCache &Cache = Owner->Cache;
 
    // We do not add self referencing provides
-   if (Ver.ParentPkg().Name() == PkgName && PkgArch == Ver.Arch(true))
+   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
@@ -937,8 +1027,11 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S,
 /* 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. */
 /* 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
 {
    bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
    // No file, certainly invalid
@@ -949,6 +1042,13 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start,
       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);
    SPtr<MMap> Map = new MMap(CacheF,0);
    // Map it
    FileFd CacheF(CacheFile,FileFd::ReadOnly);
    SPtr<MMap> Map = new MMap(CacheF,0);
@@ -965,7 +1065,7 @@ 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 (Debug == true)
         std::clog << "Checking PkgFile " << (*Start)->Describe() << ": ";
@@ -1032,7 +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;      
@@ -1050,7 +1150,7 @@ static bool BuildCache(pkgCacheGenerator &Gen,
                       FileIterator Start, FileIterator End)
 {
    FileIterator I;
                       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;
@@ -1080,7 +1180,7 @@ static bool BuildCache(pkgCacheGenerator &Gen,
         Progress->Done();
       TotalSize = ComputeSize(Start, End);
       CurrentSize = 0;
         Progress->Done();
       TotalSize = ComputeSize(Start, End);
       CurrentSize = 0;
-      for (I = Start; I != End; I++)
+      for (I = Start; I != End; ++I)
       {
         unsigned long Size = (*I)->Size();
         if (Progress != NULL)
       {
         unsigned long Size = (*I)->Size();
         if (Progress != NULL)
@@ -1094,6 +1194,7 @@ static bool BuildCache(pkgCacheGenerator &Gen,
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/
+// 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);
 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);
@@ -1106,6 +1207,7 @@ DynamicMMap* pkgCacheGenerator::CreateDynamicMMap(FileFd *CacheF, unsigned long
    else
       return new DynamicMMap(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 
 // CacheGenerator::MakeStatusCache - Construct the status cache                /*{{{*/
 // ---------------------------------------------------------------------
 /* This makes sure that the status cache (the cache that has all 
@@ -1121,16 +1223,16 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
                        MMap **OutMap,bool AllowMem)
 {
    bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
                        MMap **OutMap,bool AllowMem)
 {
    bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
-   
-   vector<pkgIndexFile *> Files;
-   for (vector<metaIndex *>::const_iterator i = List.begin();
+
+   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);
    }
    
@@ -1172,7 +1274,7 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
       Progress->OverallProgress(0,1,1,_("Reading package lists"));
 
    // Cache is OK, Fin.
       Progress->OverallProgress(0,1,1,_("Reading package lists"));
 
    // Cache is OK, Fin.
-   if (CheckValidity(CacheFile,Files.begin(),Files.end(),OutMap) == true)
+   if (CheckValidity(CacheFile, List, Files.begin(),Files.end(),OutMap) == true)
    {
       if (Progress != NULL)
         Progress->OverallProgress(1,1,1,_("Reading package lists"));
    {
       if (Progress != NULL)
         Progress->OverallProgress(1,1,1,_("Reading package lists"));
@@ -1189,16 +1291,32 @@ bool pkgCacheGenerator::MakeStatusCache(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);
       Map = CreateDynamicMMap(CacheF, MMap::Public);
       if (_error->PendingError() == true)
       fchmod(CacheF->Fd(),0644);
       Map = CreateDynamicMMap(CacheF, MMap::Public);
       if (_error->PendingError() == true)
-        return false;
-      if (Debug == true)
+      {
+        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;
         std::clog << "Open filebased MMap" << std::endl;
+      }
    }
    }
-   else
+   if (Writeable == false || CacheFile.empty() == true)
    {
       // Just build it in memory..
       Map = CreateDynamicMMap(NULL);
    {
       // Just build it in memory..
       Map = CreateDynamicMMap(NULL);
@@ -1209,7 +1327,7 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
    // 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)
    {
       if (Debug == true)
                     Files.begin()+EndOfSource) == true)
    {
       if (Debug == true)
@@ -1231,9 +1349,6 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
                     Files.begin()+EndOfSource,Files.end()) == false)
         return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
                     Files.begin()+EndOfSource,Files.end()) == false)
         return false;
-
-      // FIXME: move me to a better place
-      Gen.FinishCache(Progress);
    }
    else
    {
    }
    else
    {
@@ -1252,7 +1367,7 @@ bool pkgCacheGenerator::MakeStatusCache(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;
         
@@ -1276,9 +1391,6 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
                     Files.begin()+EndOfSource,Files.end()) == false)
         return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
                     Files.begin()+EndOfSource,Files.end()) == false)
         return false;
-
-      // FIXME: move me to a better place
-      Gen.FinishCache(Progress);
    }
    if (Debug == true)
       std::clog << "Caches are ready for shipping" << std::endl;
    }
    if (Debug == true)
       std::clog << "Caches are ready for shipping" << std::endl;
@@ -1308,7 +1420,7 @@ __deprecated bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutM
    { return pkgCacheGenerator::MakeOnlyStatusCache(&Progress, OutMap); }
 bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap)
 {
    { return pkgCacheGenerator::MakeOnlyStatusCache(&Progress, OutMap); }
 bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap)
 {
-   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;
@@ -1329,9 +1441,6 @@ bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **O
                  Files.begin()+EndOfSource,Files.end()) == false)
       return false;
 
                  Files.begin()+EndOfSource,Files.end()) == false)
       return false;
 
-   // FIXME: move me to a better place
-   Gen.FinishCache(Progress);
-
    if (_error->PendingError() == true)
       return false;
    *OutMap = Map.UnGuard();
    if (_error->PendingError() == true)
       return false;
    *OutMap = Map.UnGuard();
@@ -1339,3 +1448,22 @@ bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **O
    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;
+}
+                                                                       /*}}}*/