convert a lot of places to use IsNegative instead of checking by hand

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

diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 7014aee228bc2089033745d84e7404e16cfdb024..38e4e904ed41133ae2feb07b9bdd94fad8584354 100644 (file)
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -211,12 +211,18 @@ pkgCache::PkgIterator pkgCache::SingleArchFindPkg(const string &Name)
 // ---------------------------------------------------------------------
 /* Returns 0 on error, pointer to the package otherwise */
 pkgCache::PkgIterator pkgCache::FindPkg(const string &Name) {
-       if (MultiArchCache() == false)
-               return SingleArchFindPkg(Name);
        size_t const found = Name.find(':');
        if (found == string::npos)
-               return FindPkg(Name, "native");
+       {
+               if (MultiArchCache() == false)
+                       return SingleArchFindPkg(Name);
+               else
+                       return FindPkg(Name, "native");
+       }
        string const Arch = Name.substr(found+1);
+       /* Beware: This is specialcased to handle pkg:any in dependencies as
+          these are linked to virtual pkg:any named packages with all archs.
+          If you want any arch from a given pkg, use FindPkg(pkg,arch) */
        if (Arch == "any")
                return FindPkg(Name, "any");
        return FindPkg(Name.substr(0, found), Arch);
@@ -228,7 +234,7 @@ pkgCache::PkgIterator pkgCache::FindPkg(const string &Name) {
 pkgCache::PkgIterator pkgCache::FindPkg(const string &Name, string const &Arch) {
        if (MultiArchCache() == false) {
                if (Arch == "native" || Arch == "all" || Arch == "any" ||
-                   Arch == _config->Find("APT::Architecture"))
+                   Arch == NativeArch())
                        return SingleArchFindPkg(Name);
                else
                        return PkgIterator(*this,0);
@@ -317,22 +323,22 @@ pkgCache::PkgIterator pkgCache::GrpIterator::FindPkg(string Arch) const {
        if (unlikely(IsGood() == false || S->FirstPackage == 0))
                return PkgIterator(*Owner, 0);
 
-       static string const myArch = _config->Find("APT::Architecture");
+       /* If we accept any package we simply return the "first"
+          package in this group (the last one added). */
+       if (Arch == "any")
+               return PkgIterator(*Owner, Owner->PkgP + S->FirstPackage);
+
+       char const* const myArch = Owner->NativeArch();
        /* Most of the time the package for our native architecture is
           the one we add at first to the cache, but this would be the
           last one we check, so we do it now. */
-       if (Arch == "native" || Arch == myArch) {
-               Arch = myArch;
+       if (Arch == "native" || Arch == myArch || Arch == "all") {
                pkgCache::Package *Pkg = Owner->PkgP + S->LastPackage;
-               if (stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0)
+               if (strcasecmp(myArch, Owner->StrP + Pkg->Arch) == 0)
                        return PkgIterator(*Owner, Pkg);
+               Arch = myArch;
        }
 
-       /* If we accept any package we simply return the "first"
-          package in this group (the last one added). */
-       if (Arch == "any")
-               return PkgIterator(*Owner, Owner->PkgP + S->FirstPackage);
-
        /* Iterate over the list to find the matching arch
           unfortunately this list includes "package noise"
           (= different packages with same calculated hash),
@@ -503,7 +509,8 @@ std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const
 {
    string fullname = Name();
    if (Pretty == false ||
-       (strcmp(Arch(), "all") != 0 && _config->Find("APT::Architecture") != Arch()))
+       (strcmp(Arch(), "all") != 0 &&
+       strcmp(Owner->NativeArch(), Arch()) != 0))
       return fullname.append(":").append(Arch());
    return fullname;
 }
@@ -514,15 +521,24 @@ std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const
    conflicts (including dpkg's Breaks fields). */
 bool pkgCache::DepIterator::IsCritical() const
 {
-   if (S->Type == pkgCache::Dep::Conflicts ||
-       S->Type == pkgCache::Dep::DpkgBreaks ||
-       S->Type == pkgCache::Dep::Obsoletes ||
+   if (IsNegative() == true ||
        S->Type == pkgCache::Dep::Depends ||
        S->Type == pkgCache::Dep::PreDepends)
       return true;
    return false;
 }
                                                                        /*}}}*/
+// DepIterator::IsNegative - Returns true if the dep is a negative one /*{{{*/
+// ---------------------------------------------------------------------
+/* Some dependencies are positive like Depends and Recommends, others
+   are negative like Conflicts which can and should be handled differently */
+bool pkgCache::DepIterator::IsNegative() const
+{
+   return S->Type == Dep::DpkgBreaks ||
+         S->Type == Dep::Conflicts ||
+         S->Type == Dep::Obsoletes;
+}
+                                                                       /*}}}*/
 // DepIterator::SmartTargetPkg - Resolve dep target pointers w/provides        /*{{{*/
 // ---------------------------------------------------------------------
 /* This intellegently looks at dep target packages and tries to figure
@@ -600,9 +616,7 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const
         if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
            continue;
 
-        if ((S->Type == pkgCache::Dep::Conflicts ||
-             S->Type == pkgCache::Dep::DpkgBreaks ||
-             S->Type == pkgCache::Dep::Obsoletes) &&
+        if (IsNegative() == true &&
             ParentPkg() == I.ParentPkg())
            continue;
         
@@ -617,9 +631,7 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const
         if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
            continue;
         
-        if ((S->Type == pkgCache::Dep::Conflicts ||
-             S->Type == pkgCache::Dep::DpkgBreaks ||
-             S->Type == pkgCache::Dep::Obsoletes) &&
+        if (IsNegative() == true &&
             ParentPkg() == I.OwnerPkg())
            continue;