CmdPurge: Add initial implementation

src/commands/CmdPurge.cpp

@@ -0,0 +1,80 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2006 - 2016, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <cmake.h>
+#include <CmdPurge.h>
+#include <Context.h>
+#include <Filter.h>
+#include <i18n.h>
+
+extern Context context;
+
+////////////////////////////////////////////////////////////////////////////////
+CmdPurge::CmdPurge ()
+{
+  _keyword               = "purge";
+  _usage                 = "task <filter> purge";
+  _description           = STRING_CMD_PURGE_USAGE;
+  _read_only             = false;
+  _displays_id           = false;
+  _needs_confirm         = true;
+  _needs_gc              = false;
+  _uses_context          = true;
+  _accepts_filter        = true;
+  _accepts_modifications = false;
+  _accepts_miscellaneous = false;
+  _category              = Command::Category::operation;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int CmdPurge::execute (std::string&)
+{
+  int rc = 0;
+  int count = 0;
+
+  // Apply filter.
+  Filter filter;
+  std::vector <Task> filtered;
+  filter.subset (filtered);
+  if (filtered.size () == 0)
+  {
+    context.footnote (STRING_FEEDBACK_NO_TASKS_SP);
+    return 1;
+  }
+
+  for (auto& task : filtered)
+  {
+    if (task.getStatus () == Task::deleted)
+    {
+        context.tdb2.purge (task);
+        count++;
+    }
+  }
+
+  return rc;
+}
+
+////////////////////////////////////////////////////////////////////////////////