1 files changed, 66 insertions, 0 deletions
diff --git a/apt-private/private-upgrade.cc b/apt-private/private-upgrade.cc
new file mode 100644
index 0000000..aeaf506
--- /dev/null
+++ b/apt-private/private-upgrade.cc
@@ -0,0 +1,66 @@
+// Includes								/*{{{*/
+#include <config.h>
+
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/upgrade.h>
+
+#include <apt-private/private-cachefile.h>
+#include <apt-private/private-install.h>
+#include <apt-private/private-output.h>
+#include <apt-private/private-upgrade.h>
+
+#include <iostream>
+
+#include <apti18n.h>
+									/*}}}*/
+
+// this is actually performing the various upgrade operations 
+static bool UpgradeHelper(CommandLine &CmdL, int UpgradeFlags)
+{
+   CacheFile Cache;
+   auto VolatileCmdL = GetPseudoPackages(Cache.GetSourceList(), CmdL, AddVolatileBinaryFile, "");
+
+   if (Cache.OpenForInstall() == false || Cache.CheckDeps() == false)
+      return false;
+
+   if(!DoCacheManipulationFromCommandLine(CmdL, VolatileCmdL,  Cache, UpgradeFlags))
+      return false;
+
+   return InstallPackages(Cache,true);
+}
+
+// DoDistUpgrade - Automatic smart upgrader				/*{{{*/
+// ---------------------------------------------------------------------
+/* Intelligent upgrader that will install and remove packages at will */
+bool DoDistUpgrade(CommandLine &CmdL)
+{
+   return UpgradeHelper(CmdL, APT::Upgrade::ALLOW_EVERYTHING);
+}
+									/*}}}*/
+bool DoUpgrade(CommandLine &CmdL)					/*{{{*/
+{
+   if (_config->FindB("APT::Get::Upgrade-Allow-New", false) == true)
+      return DoUpgradeWithAllowNewPackages(CmdL);
+   else
+      return DoUpgradeNoNewPackages(CmdL);
+}
+									/*}}}*/
+// DoUpgradeNoNewPackages - Upgrade all packages			/*{{{*/
+// ---------------------------------------------------------------------
+/* Upgrade all packages without installing new packages or erasing old
+   packages */
+bool DoUpgradeNoNewPackages(CommandLine &CmdL)
+{
+   // Do the upgrade
+   return UpgradeHelper(CmdL, 
+                        APT::Upgrade::FORBID_REMOVE_PACKAGES|
+                        APT::Upgrade::FORBID_INSTALL_NEW_PACKAGES);
+}
+									/*}}}*/
+// DoSafeUpgrade - Upgrade all packages with install but not remove	/*{{{*/
+bool DoUpgradeWithAllowNewPackages(CommandLine &CmdL)
+{
+   return UpgradeHelper(CmdL, APT::Upgrade::FORBID_REMOVE_PACKAGES);
+}
+									/*}}}*/