1 files changed, 120 insertions, 0 deletions
diff --git a/apt-private/private-unmet.cc b/apt-private/private-unmet.cc
new file mode 100644
index 0000000..229e5a2
--- /dev/null
+++ b/apt-private/private-unmet.cc
@@ -0,0 +1,120 @@
+// -*- mode: cpp; mode: fold -*-
+// Include Files							/*{{{*/
+#include <config.h>
+
+#include <apt-pkg/cachefile.h>
+#include <apt-pkg/cmndline.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/strutl.h>
+
+#include <apt-private/private-cacheset.h>
+#include <apt-private/private-unmet.h>
+
+#include <cstddef>
+
+#include <iostream>
+
+#include <apti18n.h>
+									/*}}}*/
+
+// UnMet - Show unmet dependencies					/*{{{*/
+static bool ShowUnMet(pkgCache::VerIterator const &V, bool const Important)
+{
+	 bool Header = false;
+	 for (pkgCache::DepIterator D = V.DependsList(); D.end() == false;)
+	 {
+	    // Collect or groups
+	    pkgCache::DepIterator Start;
+	    pkgCache::DepIterator End;
+	    D.GlobOr(Start,End);
+
+	    // Important deps only
+	    if (Important == true)
+	       if (End->Type != pkgCache::Dep::PreDepends &&
+	           End->Type != pkgCache::Dep::Depends)
+		  continue;
+
+	    // Skip conflicts and replaces
+	    if (End.IsNegative() == true || End->Type == pkgCache::Dep::Replaces)
+	       continue;
+
+	    // Verify the or group
+	    bool OK = false;
+	    pkgCache::DepIterator RealStart = Start;
+	    do
+	    {
+	       // See if this dep is Ok
+	       pkgCache::Version **VList = Start.AllTargets();
+	       if (*VList != 0)
+	       {
+		  OK = true;
+		  delete [] VList;
+		  break;
+	       }
+	       delete [] VList;
+
+	       if (Start == End)
+		  break;
+	       ++Start;
+	    }
+	    while (1);
+
+	    // The group is OK
+	    if (OK == true)
+	       continue;
+
+	    // Oops, it failed..
+	    if (Header == false)
+	       ioprintf(std::cout,_("Package %s version %s has an unmet dep:\n"),
+			V.ParentPkg().FullName(true).c_str(),V.VerStr());
+	    Header = true;
+
+	    // Print out the dep type
+	    std::cout << " " << End.DepType() << ": ";
+
+	    // Show the group
+	    Start = RealStart;
+	    do
+	    {
+	       std::cout << Start.TargetPkg().FullName(true);
+	       if (Start.TargetVer() != 0)
+		  std::cout << " (" << Start.CompType() << " " << Start.TargetVer() <<
+		  ")";
+	       if (Start == End)
+		  break;
+	       std::cout << " | ";
+	       ++Start;
+	    }
+	    while (1);
+
+	    std::cout << std::endl;
+	 }
+   return true;
+}
+bool UnMet(CommandLine &CmdL)
+{
+   bool const Important = _config->FindB("APT::Cache::Important",false);
+
+   pkgCacheFile CacheFile;
+   if (unlikely(CacheFile.GetPkgCache() == NULL))
+      return false;
+
+   if (CmdL.FileSize() <= 1)
+   {
+      for (pkgCache::PkgIterator P = CacheFile.GetPkgCache()->PkgBegin(); P.end() == false; ++P)
+	 for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
+	    if (ShowUnMet(V, Important) == false)
+	       return false;
+   }
+   else
+   {
+      CacheSetHelperVirtuals helper(true, GlobalError::NOTICE);
+      APT::VersionList verset = APT::VersionList::FromCommandLine(CacheFile, CmdL.FileList + 1,
+				APT::CacheSetHelper::CANDIDATE, helper);
+      for (APT::VersionList::iterator V = verset.begin(); V != verset.end(); ++V)
+	 if (ShowUnMet(V, Important) == false)
+	    return false;
+   }
+   return true;
+}
+									/*}}}*/