implement StringSplit() as we need this to fix the dpkg status-fd output parsing

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

diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 85799a11b9cbc17f955c22df05d929f03c716dce..69d4acd83d621a8776d4124940f8fb8b1d697d56 100644 (file)
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -456,6 +456,49 @@ bool pkgAllUpgrade(pkgDepCache &Cache)
         Cache.MarkInstall(I, false, 0, false);
    }
       
+   return Fix.ResolveByKeep();
+}
+                                                                       /*}}}*/
+// AllUpgradeNoDelete - Upgrade without removing packages              /*{{{*/
+// ---------------------------------------------------------------------
+/* Right now the system must be consistent before this can be called.
+ * Upgrade as much as possible without deleting anything (useful for
+ * stable systems)
+ */
+bool pkgAllUpgradeNoDelete(pkgDepCache &Cache)
+{
+   pkgDepCache::ActionGroup group(Cache);
+
+   pkgProblemResolver Fix(&Cache);
+
+   if (Cache.BrokenCount() != 0)
+      return false;
+
+   // provide the initial set of stuff we want to upgrade by marking
+   // all upgradable packages for upgrade
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+   {
+      if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
+      {
+         if (_config->FindB("APT::Ignore-Hold",false) == false)
+            if (I->SelectedState == pkgCache::State::Hold)
+               continue;
+
+        Cache.MarkInstall(I, false, 0, false);
+      }
+   }
+
+   // then let auto-install loose
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+      if (Cache[I].Install())
+        Cache.MarkInstall(I, true, 0, false);
+
+   // ... but it may remove stuff, we we need to clean up afterwards again
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+      if (Cache[I].Delete() == true)
+        Cache.MarkKeep(I, false, false);
+
+   // resolve remaining issues via keep
    return Fix.ResolveByKeep();
 }
                                                                        /*}}}*/
@@ -550,14 +593,12 @@ void pkgProblemResolver::MakeScores()
    unsigned long Size = Cache.Head().PackageCount;
    memset(Scores,0,sizeof(*Scores)*Size);
 
-   // Maps to pkgCache::State::VerPriority
-   //   which is "Important Required Standard Optional Extra"
-   // (yes, that is confusing, the order of pkgCache::State::VerPriority
-   //  needs to be adjusted but that requires a ABI break)
+   // maps to pkgCache::State::VerPriority: 
+   //    Required Important Standard Optional Extra
    int PrioMap[] = {
       0,
-      _config->FindI("pkgProblemResolver::Scores::Important",2),
       _config->FindI("pkgProblemResolver::Scores::Required",3),
+      _config->FindI("pkgProblemResolver::Scores::Important",2),
       _config->FindI("pkgProblemResolver::Scores::Standard",1),
       _config->FindI("pkgProblemResolver::Scores::Optional",-1),
       _config->FindI("pkgProblemResolver::Scores::Extra",-2)