apt-pkg, methods: Convert users of WriteEmpty to WriteAtomic.

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

diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 8af8ef7de596d967314dc973b8cbb29fe3b27980..ae11057edadd76fece69a8bdc2403cd8731755e9 100644 (file)
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -111,7 +111,10 @@ bool pkgCache::Header::CheckSizes(Header &Against) const
 /* */
 pkgCache::pkgCache(MMap *Map, bool DoMap) : Map(*Map)
 {
-   MultiArchEnabled = APT::Configuration::getArchitectures().size() > 1;
+   // call getArchitectures() with cached=false to ensure that the 
+   // architectures cache is re-evaulated. this is needed in cases
+   // when the APT::Architecture field changes between two cache creations
+   MultiArchEnabled = APT::Configuration::getArchitectures(false).size() > 1;
    if (DoMap == true)
       ReMap();
 }
@@ -349,19 +352,21 @@ pkgCache::PkgIterator pkgCache::GrpIterator::FindPkg(string Arch) const {
 // GrpIterator::FindPreferredPkg - Locate the "best" package           /*{{{*/
 // ---------------------------------------------------------------------
 /* Returns an End-Pointer on error, pointer to the package otherwise */
-pkgCache::PkgIterator pkgCache::GrpIterator::FindPreferredPkg() const {
+pkgCache::PkgIterator pkgCache::GrpIterator::FindPreferredPkg(bool const &PreferNonVirtual) const {
        pkgCache::PkgIterator Pkg = FindPkg("native");
-       if (Pkg.end() == false)
+       if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0))
                return Pkg;
 
        std::vector<std::string> const archs = APT::Configuration::getArchitectures();
        for (std::vector<std::string>::const_iterator a = archs.begin();
             a != archs.end(); ++a) {
                Pkg = FindPkg(*a);
-               if (Pkg.end() == false)
+               if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0))
                        return Pkg;
        }
 
+       if (PreferNonVirtual == true)
+               return FindPreferredPkg(false);
        return PkgIterator(*Owner, 0);
 }
                                                                        /*}}}*/