1 files changed, 119 insertions, 0 deletions
diff --git a/src/clients/cave/cmd_purge.cc b/src/clients/cave/cmd_purge.cc
new file mode 100644
index 000000000..fc58a70c0
--- /dev/null
+++ b/src/clients/cave/cmd_purge.cc
@@ -0,0 +1,119 @@
+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+
+/*
+ * Copyright (c) 2010 Ciaran McCreesh
+ *
+ * This file is part of the Paludis package manager. Paludis is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU General
+ * Public License version 2, as published by the Free Software Foundation.
+ *
+ * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "cmd_purge.hh"
+#include "cmd_resolve_cmdline.hh"
+#include "resolve_common.hh"
+#include "exceptions.hh"
+
+#include <paludis/util/make_shared_ptr.hh>
+#include <paludis/util/stringify.hh>
+#include <paludis/user_dep_spec.hh>
+#include <paludis/selection.hh>
+#include <paludis/generator.hh>
+#include <paludis/filter.hh>
+#include <paludis/filtered_generator.hh>
+#include <paludis/environment.hh>
+#include <paludis/package_id.hh>
+#include <paludis/metadata_key.hh>
+
+#include <iostream>
+#include <cstdlib>
+
+using namespace paludis;
+using namespace cave;
+
+using std::cout;
+using std::endl;
+
+namespace
+{
+    struct PurgeCommandLine :
+        CaveCommandCommandLine
+    {
+        std::tr1::shared_ptr<ResolveCommandLineResolutionOptions> resolution_options;
+        std::tr1::shared_ptr<ResolveCommandLineExecutionOptions> execution_options;
+        std::tr1::shared_ptr<ResolveCommandLineDisplayOptions> display_options;
+        std::tr1::shared_ptr<ResolveCommandLineProgramOptions> program_options;
+
+        PurgeCommandLine(const bool for_docs) :
+            resolution_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineResolutionOptions(this))),
+            execution_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineExecutionOptions(this))),
+            display_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineDisplayOptions(this))),
+            program_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineProgramOptions(this)))
+        {
+            add_usage_line("[ -x|--execute ]");
+            add_note("All options available for 'cave resolve' are also permitted. See 'man cave-resolve' for details.");
+        }
+
+        std::string app_name() const
+        {
+            return "cave purge";
+        }
+
+        std::string app_synopsis() const
+        {
+            return "Uninstall unused packages.";
+        }
+
+        std::string app_description() const
+        {
+            return "Uninstalls any package that is not either in 'world' or a dependency of a package "
+                "in 'world'.";
+        }
+    };
+}
+
+bool
+PurgeCommand::important() const
+{
+    return true;
+}
+
+int
+PurgeCommand::run(
+        const std::tr1::shared_ptr<Environment> & env,
+        const std::tr1::shared_ptr<const Sequence<std::string > > & args
+        )
+{
+    PurgeCommandLine cmdline(false);
+    cmdline.run(args, "CAVE", "CAVE_PURGE_OPTIONS", "CAVE_PURGE_CMDLINE");
+
+    if (cmdline.a_help.specified())
+    {
+        cout << cmdline;
+        return EXIT_SUCCESS;
+    }
+
+    cmdline.resolution_options->apply_shortcuts();
+    cmdline.resolution_options->verify(env);
+
+    cmdline.resolution_options->a_purge.set_specified(true);
+    cmdline.resolution_options->a_purge.add_argument("*/*");
+
+    return resolve_common(env, *cmdline.resolution_options, *cmdline.execution_options, *cmdline.display_options,
+            *cmdline.program_options, make_null_shared_ptr(), make_null_shared_ptr(), true);
+}
+
+std::tr1::shared_ptr<args::ArgsHandler>
+PurgeCommand::make_doc_cmdline()
+{
+    return make_shared_ptr(new PurgeCommandLine(true));
+}
+