add volatile sources support in libapt-pkg

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

diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 2348cca2d0b9c11954fda23685b6594cb56df591..e8c95738e9673848ce6d27c932449a9195234bea 100644 (file)
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -50,27 +50,29 @@ using std::string;
 /* Simply initialize the header */
 pkgCache::Header::Header()
 {
-   Signature = 0x98FE76DC;
-   
+#define APT_HEADER_SET(X,Y) X = Y; static_assert(std::numeric_limits<decltype(X)>::max() > Y, "Size violation detected in pkgCache::Header")
+   APT_HEADER_SET(Signature, 0x98FE76DC);
+
    /* Whenever the structures change the major version should be bumped,
       whenever the generator changes the minor version should be bumped. */
-   MajorVersion = 10;
-   MinorVersion = 0;
-   Dirty = false;
-   
-   HeaderSz = sizeof(pkgCache::Header);
-   GroupSz = sizeof(pkgCache::Group);
-   PackageSz = sizeof(pkgCache::Package);
-   ReleaseFileSz = sizeof(pkgCache::ReleaseFile);
-   PackageFileSz = sizeof(pkgCache::PackageFile);
-   VersionSz = sizeof(pkgCache::Version);
-   DescriptionSz = sizeof(pkgCache::Description);
-   DependencySz = sizeof(pkgCache::Dependency);
-   DependencyDataSz = sizeof(pkgCache::DependencyData);
-   ProvidesSz = sizeof(pkgCache::Provides);
-   VerFileSz = sizeof(pkgCache::VerFile);
-   DescFileSz = sizeof(pkgCache::DescFile);
-   
+   APT_HEADER_SET(MajorVersion, 10);
+   APT_HEADER_SET(MinorVersion, 0);
+   APT_HEADER_SET(Dirty, false);
+
+   APT_HEADER_SET(HeaderSz, sizeof(pkgCache::Header));
+   APT_HEADER_SET(GroupSz, sizeof(pkgCache::Group));
+   APT_HEADER_SET(PackageSz, sizeof(pkgCache::Package));
+   APT_HEADER_SET(ReleaseFileSz, sizeof(pkgCache::ReleaseFile));
+   APT_HEADER_SET(PackageFileSz, sizeof(pkgCache::PackageFile));
+   APT_HEADER_SET(VersionSz, sizeof(pkgCache::Version));
+   APT_HEADER_SET(DescriptionSz, sizeof(pkgCache::Description));
+   APT_HEADER_SET(DependencySz, sizeof(pkgCache::Dependency));
+   APT_HEADER_SET(DependencyDataSz, sizeof(pkgCache::DependencyData));
+   APT_HEADER_SET(ProvidesSz, sizeof(pkgCache::Provides));
+   APT_HEADER_SET(VerFileSz, sizeof(pkgCache::VerFile));
+   APT_HEADER_SET(DescFileSz, sizeof(pkgCache::DescFile));
+#undef APT_HEADER_SET
+
    GroupCount = 0;
    PackageCount = 0;
    VersionCount = 0;
@@ -84,7 +86,7 @@ pkgCache::Header::Header()
    ProvidesCount = 0;
    MaxVerFileSize = 0;
    MaxDescFileSize = 0;
-   
+
    FileList = 0;
    RlsFileList = 0;
    VerSysName = 0;
@@ -725,21 +727,7 @@ bool pkgCache::DepIterator::IsIgnorable(PkgIterator const &PT) const
    // ignore group-conflict on a M-A:same package - but not our implicit dependencies
    // so that we can have M-A:same packages conflicting with their own real name
    if ((PV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
-   {
-      // Replaces: ${self}:other ( << ${binary:Version})
-      if (S2->Type == pkgCache::Dep::Replaces)
-      {
-        if (S2->CompareOp == pkgCache::Dep::Less && strcmp(PV.VerStr(), TargetVer()) == 0)
-           return false;
-      }
-      // Breaks: ${self}:other (!= ${binary:Version})
-      else if (S2->Type == pkgCache::Dep::DpkgBreaks)
-      {
-        if (S2->CompareOp == pkgCache::Dep::NotEquals && strcmp(PV.VerStr(), TargetVer()) == 0)
-           return false;
-      }
-      return true;
-   }
+      return IsMultiArchImplicit() == false;
 
    return false;
 }
@@ -754,27 +742,12 @@ bool pkgCache::DepIterator::IsIgnorable(PrvIterator const &Prv) const
    if (Prv.OwnerPkg()->Group == Pkg->Group)
       return true;
    // Implicit group-conflicts should not be applied on providers of other groups
-   if (Pkg->Group == TargetPkg()->Group && Prv.OwnerPkg()->Group != Pkg->Group)
+   if (IsMultiArchImplicit() && Prv.OwnerPkg()->Group != Pkg->Group)
       return true;
 
    return false;
 }
                                                                        /*}}}*/
-// DepIterator::IsMultiArchImplicit - added by the cache generation    /*{{{*/
-// ---------------------------------------------------------------------
-/* MultiArch can be translated to SingleArch for an resolver and we did so,
-   by adding dependencies to help the resolver understand the problem, but
-   sometimes it is needed to identify these to ignore them… */
-bool pkgCache::DepIterator::IsMultiArchImplicit() const
-{
-   if (ParentPkg()->Arch != TargetPkg()->Arch &&
-       (S2->Type == pkgCache::Dep::Replaces ||
-       S2->Type == pkgCache::Dep::DpkgBreaks ||
-       S2->Type == pkgCache::Dep::Conflicts))
-      return true;
-   return false;
-}
-                                                                       /*}}}*/
 // DepIterator::IsSatisfied - check if a version satisfied the dependency /*{{{*/
 bool pkgCache::DepIterator::IsSatisfied(VerIterator const &Ver) const
 {
@@ -785,6 +758,20 @@ bool pkgCache::DepIterator::IsSatisfied(PrvIterator const &Prv) const
    return Owner->VS->CheckDep(Prv.ProvideVersion(),S2->CompareOp,TargetVer());
 }
                                                                        /*}}}*/
+// DepIterator::IsImplicit - added by the cache generation             /*{{{*/
+bool pkgCache::DepIterator::IsImplicit() const
+{
+   if (IsMultiArchImplicit() == true)
+      return true;
+   if (IsNegative() || S2->Type == pkgCache::Dep::Replaces)
+   {
+      if ((S2->CompareOp & pkgCache::Dep::ArchSpecific) != pkgCache::Dep::ArchSpecific &&
+           strcmp(ParentPkg().Arch(), TargetPkg().Arch()) != 0)
+        return true;
+   }
+   return false;
+}
+                                                                       /*}}}*/
 // ostream operator to handle string representation of a dependecy     /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -1065,19 +1052,5 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
 }
 
                                                                        /*}}}*/
-// PrvIterator::IsMultiArchImplicit - added by the cache generation    /*{{{*/
-// ---------------------------------------------------------------------
-/* MultiArch can be translated to SingleArch for an resolver and we did so,
-   by adding provides to help the resolver understand the problem, but
-   sometimes it is needed to identify these to ignore them… */
-bool pkgCache::PrvIterator::IsMultiArchImplicit() const
-{
-   pkgCache::PkgIterator const Owner = OwnerPkg();
-   pkgCache::PkgIterator const Parent = ParentPkg();
-   if (strcmp(Owner.Arch(), Parent.Arch()) != 0 || Owner.Group()->Name == Parent.Group()->Name)
-      return true;
-   return false;
-}
-                                                                       /*}}}*/
 
 pkgCache::~pkgCache() {}