CmdSplit: Implemented 'split' command

src/commands/CmdSplit.cpp

@@ -0,0 +1,95 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015 - 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 <Duration.h>
+#include <commands.h>
+#include <timew.h>
+#include <iostream>
+#include <stdlib.h>
+
+////////////////////////////////////////////////////////////////////////////////
+int CmdSplit (
+  const CLI& cli,
+  Rules& rules,
+  Database& database)
+{
+  // Gather IDs and TAGs.
+  std::vector <int> ids;
+  std::string delta;
+  for (auto& arg : cli._args)
+  {
+    if (arg.hasTag ("ID"))
+      ids.push_back (strtol (arg.attribute ("value").c_str (), NULL, 10));
+
+    if (arg.hasTag ("FILTER") &&
+        arg._lextype == Lexer::Type::duration)
+      delta = arg.attribute ("raw");
+  }
+
+  // TODO Support :adjust
+
+  // Load the data.
+  // Note: There is no filter.
+  Interval filter;
+  auto tracked = getTracked (database, rules, filter);
+
+  // Apply tags to ids.
+  for (auto& id : ids)
+  {
+    if (id <= static_cast <int> (tracked.size ()))
+    {
+      // Note: It's okay to subtract a one-based number from a zero-based index.
+      Interval first = tracked[tracked.size () - id];
+      Interval second = first;
+
+      if (first.range.is_open ())
+      {
+        Datetime midpoint;
+        midpoint -= (midpoint - first.range.start) / 2;
+        first.range.end = midpoint;
+        second.range.start = midpoint;
+      }
+      else
+      {
+        Datetime midpoint = first.range.start;
+        midpoint += (first.range.end - first.range.start) / 2;
+        first.range.end = midpoint;
+        second.range.start = midpoint;
+      }
+
+      database.modifyInterval (tracked[tracked.size () - id], first);
+      database.addInterval (second);
+
+      // Feedback.
+      std::cout << "Split @" << id << '\n';
+    }
+  }
+
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////