TDB2

- Implemented CmdAdd.cpp and CmdLog.cpp using TDB2.
- Implemented simple append writes in TDB2.
- Modified CmdImport to accept and parse JSON.
- Added more const-ness in DOM, Expression and Task, to allow TDB2::get_tasks
  to return a const vector ref, which is a Very Good Thing.
- Corrected usage for the export command.
- Implemented Task::urgency as a call to Task::urgency_c, which is a const
  overload to allow urgency calculations (without caching) for const Task
  objects.
- Removed obolete code from TDB.
- Added lots of diagnostic output for TDB2 - it's annoying, but will be
  gone soon.
- Added mention in CmdHelp of the new <filter> and <modifications>
  syntax elements.  Needs more.
- Added Command::filter overload which uses TDB2.  Not in use yet.

src/DOM.cpp

@@ -203,7 +203,7 @@ const std::string DOM::get (const std::string& name)
 //   recur
 //   depends
 //
-const std::string DOM::get (const std::string& name, Task& task)
+const std::string DOM::get (const std::string& name, const Task& task)
 {
   // Cache test.
 /*
@@ -232,7 +232,7 @@ const std::string DOM::get (const std::string& name, Task& task)
       n.getUntilEOS (attr);
 
            if (attr == "id")      return format (task.id);
-      else if (attr == "urgency") return format (task.urgency (), 4, 3);
+      else if (attr == "urgency") return format (task.urgency_c (), 4, 3);
       else                        return task.get (attr);
     }
   }
@@ -249,7 +249,7 @@ const std::string DOM::get (const std::string& name, Task& task)
       n.getUntilEOS (attr);
 
            if (attr == "id")      return format (task.id);
-      else if (attr == "urgency") return format (task.urgency (), 4, 3);
+      else if (attr == "urgency") return format (task.urgency_c (), 4, 3);
       else                        return task.get (attr);
     }
   }
@@ -258,7 +258,7 @@ const std::string DOM::get (const std::string& name, Task& task)
 //  std::cout << "# DOM::get " << name << "\n";
 
        if (name == "id")      return format (task.id);
-  else if (name == "urgency") return format (task.urgency (), 4, 3);
+  else if (name == "urgency") return format (task.urgency_c (), 4, 3);
   else                        return task.get (name);
 
   // Delegate to the context-free version of DOM::get.

src/DOM.h

@@ -39,7 +39,7 @@ public:
   ~DOM ();
 
   const std::string get (const std::string&);
-  const std::string get (const std::string&, Task&);
+  const std::string get (const std::string&, const Task&);
   void set (const std::string&, const std::string&);
 
 private:

src/Expression.cpp

@@ -66,7 +66,7 @@ Expression::~Expression ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool Expression::eval (Task& task)
+bool Expression::eval (const Task& task)
 {
   // If there are no elements in the filter, then all tasks pass.
   if (_args.size () == 0)

src/Expression.h

@@ -40,7 +40,7 @@ class Expression
 public:
   Expression (Arguments&);
   ~Expression ();
-  bool eval (Task&);
+  bool eval (const Task&);
 
 private:
   void expand_sequence ();

src/TDB.cpp

@@ -317,41 +317,16 @@ int TDB::loadPending (std::vector <Task>& tasks)
     }
 
     // Now filter and return.
-/*
-    if (filter.size ())
-    {
-      foreach (task, mPending)
-        if (filter.pass (*task))
-          tasks.push_back (*task);
-    }
-    else
-*/
-    {
-      foreach (task, mPending)
-        tasks.push_back (*task);
-    }
+    foreach (task, mPending)
+      tasks.push_back (*task);
 
     // Hand back any accumulated additions, if TDB::loadPending is being called
     // repeatedly.
     int fakeId = mId;
-/*
-    if (filter.size ())
+    foreach (task, mNew)
     {
-      foreach (task, mNew)
-      {
-        task->id = fakeId++;
-        if (filter.pass (*task))
-          tasks.push_back (*task);
-      }
-    }
-    else
-*/
-    {
-      foreach (task, mNew)
-      {
-        task->id = fakeId++;
-        tasks.push_back (*task);
-      }
+      task->id = fakeId++;
+      tasks.push_back (*task);
     }
   }
 
@@ -406,19 +381,8 @@ int TDB::loadCompleted (std::vector <Task>& tasks)
     }
 
     // Now filter and return.
-/*
-    if (filter.size ())
-    {
-      foreach (task, mCompleted)
-        if (filter.pass (*task))
-          tasks.push_back (*task);
-    }
-    else
-*/
-    {
-      foreach (task, mCompleted)
-        tasks.push_back (*task);
-    }
+    foreach (task, mCompleted)
+      tasks.push_back (*task);
   }
 
   catch (std::string& e)

src/TDB2.cpp

@@ -25,6 +25,7 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#include <iostream> // TODO Remove.
 #include <Context.h>
 #include <text.h>
 #include <TDB2.h>
@@ -52,29 +53,37 @@ void TF2::target (const std::string& f)
 {
   _file = File (f);
   _read_only = ! _file.writable ();
+
+  std::cout << "# TF2::target " << f << "\n";
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 const std::vector <Task>& TF2::get_tasks ()
 {
+  std::cout << "# TF2::get_tasks\n";
+
   if (! _loaded_tasks)
     load_tasks ();
 
-  return _tasks /*+ _added_tasks*/;
+  return _tasks;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 const std::vector <std::string>& TF2::get_lines ()
 {
+  std::cout << "# TF2::get_lines\n";
+
   if (! _loaded_lines)
     load_lines ();
 
-  return _lines /*+ _added_lines*/;
+  return _lines;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 const std::string& TF2::get_contents ()
 {
+  std::cout << "# TF2::get_contents\n";
+
   if (! _loaded_contents)
     load_contents ();
 
@@ -84,13 +93,29 @@ const std::string& TF2::get_contents ()
 ////////////////////////////////////////////////////////////////////////////////
 void TF2::add_task (const Task& task)
 {
-  _added_tasks.push_back (task);
+  std::cout << "# TF2::add_task\n";
+
+  _tasks.push_back (task);           // For subsequent queries
+  _added_tasks.push_back (task);     // For commit/synch
   _dirty = true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void TF2::modify_task (const Task& task)
 {
+  std::cout << "# TF2::modify_task\n";
+
+  // Modify in-place.
+  std::vector <Task>::iterator i;
+  for (i = _tasks.begin (); i != _tasks.end (); ++i)
+  {
+    if (i->get ("uuid") == task.get ("uuid"))
+    {
+      *i = task;
+      break;
+    }
+  }
+
   _modified_tasks.push_back (task);
   _dirty = true;
 }
@@ -98,6 +123,8 @@ void TF2::modify_task (const Task& task)
 ////////////////////////////////////////////////////////////////////////////////
 void TF2::add_line (const std::string& line)
 {
+  std::cout << "# TF2::add_line\n";
+
   _added_lines.push_back (line);
   _dirty = true;
 }
@@ -106,6 +133,7 @@ void TF2::add_line (const std::string& line)
 // This is so that synch.key can just overwrite and not grow.
 void TF2::clear_lines ()
 {
+  std::cout << "# TF2::clear_lines\n";
   _lines.clear ();
   _dirty = true;
 }
@@ -114,6 +142,57 @@ void TF2::clear_lines ()
 // Top-down recomposition.
 void TF2::commit ()
 {
+  std::cout << "# TF2::commit " << _file.data << "\n";
+
+  // The _dirty flag indicates that the file needs to be written.
+  if (_dirty)
+  {
+    // Special case: added but no modified means just append to the file.
+    if (!_modified_tasks.size () &&
+        (_added_tasks.size () || _added_lines.size ()))
+    {
+      if (_file.open ())
+      {
+        if (context.config.getBoolean ("locking"))
+          _file.lock ();
+
+        // Write out all the added tasks.
+        std::vector <Task>::iterator task;
+        for (task = _added_tasks.begin ();
+             task != _added_tasks.end ();
+             ++task)
+        {
+          _file.append (task->composeF4 ());
+        }
+
+        _added_tasks.clear ();
+
+        // Write out all the added lines.
+        std::vector <std::string>::iterator line;
+        for (line = _added_lines.begin ();
+             line != _added_lines.end ();
+             ++line)
+        {
+          _file.append (*line);
+        }
+
+        _added_lines.clear ();
+        _file.close ();
+      }
+    }
+    else
+    {
+      // TODO _file.truncate ();
+      // TODO only write out _tasks, because any deltas have already been applied.
+      // TODO append _added_lines.
+    }
+
+    _dirty = false;
+  }
+
+
+  // --------------------------- old implementation -------------------------
+/*
   // Load the lowest form, to allow
   if (_dirty)
   {
@@ -154,24 +233,49 @@ void TF2::commit ()
 
     _dirty = false;
   }
+*/
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void TF2::load_tasks ()
 {
+  std::cout << "# TF2::load_tasks\n";
+
   if (! _loaded_lines)
     load_lines ();
 
-  std::vector <std::string>::iterator i;
-  for (i = _lines.begin (); i != _lines.end (); ++i)
-    _tasks.push_back (Task (*i));
+  int line_number = 0;
+  try
+  {
+    std::vector <std::string>::iterator i;
+    for (i = _lines.begin (); i != _lines.end (); ++i)
+    {
+      ++line_number;
+      Task task (*i);
+// TODO Find a way to number pending tasks, but not others.
+//      task.id = _id++;
+      _tasks.push_back (task);
+    }
 
-  _loaded_tasks = true;
+    _loaded_tasks = true;
+  }
+
+  catch (std::string& e)
+  {
+/*
+    std::stringstream s;
+    s << " in " << _file.data << " at line " << line_number;
+    throw e + s.str ();
+*/
+    throw e + format (" in {1} at line {2}", _file.data, line_number);
+  }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void TF2::load_lines ()
 {
+  std::cout << "# TF2::load_lines\n";
+
   if (! _loaded_contents)
     load_contents ();
 
@@ -182,16 +286,17 @@ void TF2::load_lines ()
 ////////////////////////////////////////////////////////////////////////////////
 void TF2::load_contents ()
 {
+  std::cout << "# TF2::load_contents\n";
+
   _contents = "";
 
   if (_file.open ())
   {
-    if (_file.lock ())
-    {
-      _file.read (_contents);
-      _loaded_contents = true;
-    }
-    // TODO Error handling?
+    if (context.config.getBoolean ("locking"))
+      _file.lock ();
+
+    _file.read (_contents);
+    _loaded_contents = true;
   }
   // TODO Error handling?
 }
@@ -209,7 +314,9 @@ void TF2::load_contents ()
 ////////////////////////////////////////////////////////////////////////////////
 TDB2::TDB2 ()
 : _location ("")
+, _id (1)
 {
+  std::cout << "# TDB2::TDB2\n";
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -217,6 +324,7 @@ TDB2::TDB2 ()
 // already called, if data is to be preserved.
 TDB2::~TDB2 ()
 {
+  std::cout << "# TDB2::~TDB2\n";
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -224,6 +332,7 @@ TDB2::~TDB2 ()
 // read.
 void TDB2::set_location (const std::string& location)
 {
+  std::cout << "# TDB2::set_location " << location << "\n";
   _location = location;
 
   pending.target   (location + "/pending.data");
@@ -234,35 +343,53 @@ void TDB2::set_location (const std::string& location)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// Add the new task to the appropriate file.
 void TDB2::add (const Task& task)
 {
-  // Use the raw string form for speed.
+  std::cout << "# TDB2::add\n";
+
   std::string status = task.get ("status");
-  if (status == "completed" || status == "deleted")
+  if (status == "completed" ||
+      status == "deleted")
     completed.add_task (task);
   else
     pending.add_task (task);
+
+  backlog.add_task (task);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void TDB2::modify (const Task& task)
 {
-  // TODO Handle pending vs completed/deleted
+  std::cout << "# TDB2::modify\n";
+
+  std::string status = task.get ("status");
+  if (status == "completed" ||
+      status == "deleted")
+    completed.modify_task (task);
+  else
+    pending.modify_task (task);
+
+  backlog.modify_task (task);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void TDB2::commit ()
 {
+  dump ();
+  std::cout << "# TDB2::commit\n";
   pending.commit ();
   completed.commit ();
   undo.commit ();
   backlog.commit ();
   synch_key.commit ();
+  dump ();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 int TDB2::gc ()
 {
+  std::cout << "# TDB2::gc\n";
 /*
   pending.load_tasks
   completed.load_tasks
@@ -283,6 +410,12 @@ int TDB2::gc ()
   return 0;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+int TDB2::next_id ()
+{
+  return _id++;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 //
 //  File           RW State Tasks + - ~ lines + - Bytes
@@ -304,7 +437,6 @@ void TDB2::dump ()
     view.add (Column::factory ("string.right", "State"));
     view.add (Column::factory ("string.right", "Tasks"));
     view.add (Column::factory ("string.right", "+"));
-    view.add (Column::factory ("string.right", "-"));
     view.add (Column::factory ("string.right", "~"));
     view.add (Column::factory ("string.right", "Lines"));
     view.add (Column::factory ("string.right", "+"));
@@ -329,11 +461,10 @@ void TDB2::dump_file (ViewText& view, const std::string& label, TF2& tf)
   view.set (row, 2, tf._dirty ? "dirty" : "clean");
   view.set (row, 3, tf._loaded_tasks ? (format ((int)tf._tasks.size ())) : "-");
   view.set (row, 4, (int)tf._added_tasks.size ());
-  view.set (row, 5, (int)tf._removed_tasks.size ());
-  view.set (row, 6, (int)tf._modified_tasks.size ());
-  view.set (row, 7, tf._loaded_lines ? (format ((int)tf._lines.size ())) : "-");
-  view.set (row, 8, (int)tf._added_lines.size ());
-  view.set (row, 9, tf._loaded_contents ? (format ((int)tf._contents.size ())) : "-");
+  view.set (row, 5, (int)tf._modified_tasks.size ());
+  view.set (row, 6, tf._loaded_lines ? (format ((int)tf._lines.size ())) : "-");
+  view.set (row, 7, (int)tf._added_lines.size ());
+  view.set (row, 8, tf._loaded_contents ? (format ((int)tf._contents.size ())) : "-");
 }
 
 ////////////////////////////////////////////////////////////////////////////////

src/TDB2.h

@@ -45,9 +45,9 @@ public:
 
   void target (const std::string&);
 
-  const std::vector <Task>& get_tasks ();
+  const std::vector <Task>&        get_tasks ();
   const std::vector <std::string>& get_lines ();
-  const std::string& get_contents ();
+  const std::string&               get_contents ();
 
   void add_task (const Task&);
   void modify_task (const Task&);
@@ -55,7 +55,6 @@ public:
   void clear_lines ();
   void commit ();
 
-public:
   void load_tasks ();
   void load_lines ();
   void load_contents ();
@@ -68,7 +67,6 @@ public:
   bool _loaded_contents;
   std::vector <Task> _tasks;
   std::vector <Task> _added_tasks;
-  std::vector <Task> _removed_tasks;
   std::vector <Task> _modified_tasks;
   std::vector <std::string> _lines;
   std::vector <std::string> _added_lines;
@@ -87,7 +85,8 @@ public:
   void add (const Task&);
   void modify (const Task&);
   void commit ();
-  int gc ();
+  int  gc ();
+  int  next_id ();
 
   void dump ();
   void dump_file (ViewText&, const std::string&, TF2&);
@@ -101,6 +100,7 @@ public:
 
 private:
   std::string _location;
+  int _id;
 };
 
 

src/Task.cpp

@@ -697,7 +697,7 @@ void Task::getDependencies (std::vector <std::string>& all) const
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-int Task::getTagCount ()
+int Task::getTagCount () const
 {
   std::vector <std::string> tags;
   split (tags, get ("tags"), ',');
@@ -706,7 +706,7 @@ int Task::getTagCount ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool Task::hasTag (const std::string& tag)
+bool Task::hasTag (const std::string& tag) const
 {
   std::vector <std::string> tags;
   split (tags, get ("tags"), ',');
@@ -1042,53 +1042,61 @@ int Task::determineVersion (const std::string& line)
 //
 // See rfc31-urgency.txt for full details.
 //
+float Task::urgency_c () const
+{
+  float value = 0.0;
+  value += urgency_priority ()    * context.config.getReal ("urgency.priority.coefficient");
+  value += urgency_project ()     * context.config.getReal ("urgency.project.coefficient");
+  value += urgency_active ()      * context.config.getReal ("urgency.active.coefficient");
+  value += urgency_waiting ()     * context.config.getReal ("urgency.waiting.coefficient");
+  value += urgency_blocked ()     * context.config.getReal ("urgency.blocked.coefficient");
+  value += urgency_annotations () * context.config.getReal ("urgency.annotations.coefficient");
+  value += urgency_tags ()        * context.config.getReal ("urgency.tags.coefficient");
+  value += urgency_next ()        * context.config.getReal ("urgency.next.coefficient");
+  value += urgency_due ()         * context.config.getReal ("urgency.due.coefficient");
+  value += urgency_blocking ()    * context.config.getReal ("urgency.blocking.coefficient");
+
+  // Tag- and project-specific coefficients.
+  std::vector <std::string> all;
+  context.config.all (all);
+
+  std::vector <std::string>::iterator var;
+  for (var = all.begin (); var != all.end (); ++var)
+  {
+    if (var->substr (0, 13) == "urgency.user.")
+    {
+      // urgency.user.project.<project>.coefficient
+      std::string::size_type end = std::string::npos;
+      if (var->substr (13, 8) == "project." &&
+          (end = var->find (".coefficient")) != std::string::npos)
+      {
+        std::string project = var->substr (21, end - 21);
+
+        if (get ("project").find (project) == 0)
+          value += context.config.getReal (*var);
+      }
+
+      // urgency.user.tag.<tag>.coefficient
+      if (var->substr (13, 4) == "tag." &&
+          (end = var->find (".coefficient")) != std::string::npos)
+      {
+        std::string tag = var->substr (17, end - 17);
+
+        if (hasTag (tag))
+          value += context.config.getReal (*var);
+      }
+    }
+  }
+
+  return value;
+}
+
+////////////////////////////////////////////////////////////////////////////////
 float Task::urgency ()
 {
   if (recalc_urgency)
   {
-    urgency_value = 0.0;
-    urgency_value += urgency_priority ()    * context.config.getReal ("urgency.priority.coefficient");
-    urgency_value += urgency_project ()     * context.config.getReal ("urgency.project.coefficient");
-    urgency_value += urgency_active ()      * context.config.getReal ("urgency.active.coefficient");
-    urgency_value += urgency_waiting ()     * context.config.getReal ("urgency.waiting.coefficient");
-    urgency_value += urgency_blocked ()     * context.config.getReal ("urgency.blocked.coefficient");
-    urgency_value += urgency_annotations () * context.config.getReal ("urgency.annotations.coefficient");
-    urgency_value += urgency_tags ()        * context.config.getReal ("urgency.tags.coefficient");
-    urgency_value += urgency_next ()        * context.config.getReal ("urgency.next.coefficient");
-    urgency_value += urgency_due ()         * context.config.getReal ("urgency.due.coefficient");
-    urgency_value += urgency_blocking ()    * context.config.getReal ("urgency.blocking.coefficient");
-
-    // Tag- and project-specific coefficients.
-    std::vector <std::string> all;
-    context.config.all (all);
-
-    std::vector <std::string>::iterator var;
-    for (var = all.begin (); var != all.end (); ++var)
-    {
-      if (var->substr (0, 13) == "urgency.user.")
-      {
-        // urgency.user.project.<project>.coefficient
-        std::string::size_type end = std::string::npos;
-        if (var->substr (13, 8) == "project." &&
-            (end = var->find (".coefficient")) != std::string::npos)
-        {
-          std::string project = var->substr (21, end - 21);
-
-          if (get ("project").find (project) == 0)
-            urgency_value += context.config.getReal (*var);
-        }
-
-        // urgency.user.tag.<tag>.coefficient
-        if (var->substr (13, 4) == "tag." &&
-            (end = var->find (".coefficient")) != std::string::npos)
-        {
-          std::string tag = var->substr (17, end - 17);
-
-          if (hasTag (tag))
-            urgency_value += context.config.getReal (*var);
-        }
-      }
-    }
+    urgency_value = urgency_c ();
 
     // Return the sum of all terms.
     recalc_urgency = false;
@@ -1098,7 +1106,7 @@ float Task::urgency ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_priority ()
+float Task::urgency_priority () const
 {
   std::string value = get ("priority");
 
@@ -1110,7 +1118,7 @@ float Task::urgency_priority ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_project ()
+float Task::urgency_project () const
 {
   if (has ("project"))
     return 1.0;
@@ -1119,7 +1127,7 @@ float Task::urgency_project ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_active ()
+float Task::urgency_active () const
 {
   if (has ("start"))
     return 1.0;
@@ -1128,7 +1136,7 @@ float Task::urgency_active ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_waiting ()
+float Task::urgency_waiting () const
 {
   if (get ("status") == "pending")
     return 1.0;
@@ -1137,7 +1145,7 @@ float Task::urgency_waiting ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_blocked ()
+float Task::urgency_blocked () const
 {
   if (has ("depends"))
     return 1.0;
@@ -1146,7 +1154,7 @@ float Task::urgency_blocked ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_annotations ()
+float Task::urgency_annotations () const
 {
   std::vector <Att> annos;
   getAnnotations (annos);
@@ -1159,7 +1167,7 @@ float Task::urgency_annotations ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_tags ()
+float Task::urgency_tags () const
 {
   switch (getTagCount ())
   {
@@ -1171,7 +1179,7 @@ float Task::urgency_tags ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_next ()
+float Task::urgency_next () const
 {
   if (hasTag ("next"))
     return 1.0;
@@ -1180,7 +1188,7 @@ float Task::urgency_next ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_due ()
+float Task::urgency_due () const
 {
   if (has ("due"))
   {
@@ -1216,7 +1224,7 @@ float Task::urgency_due ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-float Task::urgency_blocking ()
+float Task::urgency_blocking () const
 {
   if (dependencyIsBlocking (*this))
     return 1.0;

src/Task.h

@@ -65,8 +65,8 @@ public:
   status getStatus () const;
   void setStatus (status);
 
-  int getTagCount ();
-  bool hasTag (const std::string&);
+  int getTagCount () const;
+  bool hasTag (const std::string&) const;
   void addTag (const std::string&);
   void addTags (const std::vector <std::string>&);
   void getTags (std::vector<std::string>&) const;
@@ -87,22 +87,23 @@ public:
 
   void validate () const;
 
+  float urgency_c () const;
   float urgency ();
 
 private:
   int determineVersion (const std::string&);
   void legacyParse (const std::string&);
 
-  inline float urgency_priority ();
-  inline float urgency_project ();
-  inline float urgency_active ();
-  inline float urgency_waiting ();
-  inline float urgency_blocked ();
-  inline float urgency_annotations ();
-  inline float urgency_tags ();
-  inline float urgency_next ();
-  inline float urgency_due ();
-  inline float urgency_blocking ();
+  inline float urgency_priority () const;
+  inline float urgency_project () const;
+  inline float urgency_active () const;
+  inline float urgency_waiting () const;
+  inline float urgency_blocked () const;
+  inline float urgency_annotations () const;
+  inline float urgency_tags () const;
+  inline float urgency_next () const;
+  inline float urgency_due () const;
+  inline float urgency_blocking () const;
 };
 
 #endif

src/commands/CmdAdd.cpp

@@ -51,12 +51,6 @@ int CmdAdd::execute (std::string& output)
 {
   int rc = 0;
 
-  // Must load pending to resolve dependencies, and to provide a new ID.
-  context.tdb.lock (context.config.getBoolean ("locking"));
-
-  std::vector <Task> all;
-  context.tdb.loadPending (all);
-
   // Every task needs a UUID.
   Task task;
   task.set ("uuid", uuid ());
@@ -68,17 +62,16 @@ int CmdAdd::execute (std::string& output)
 
   // Only valid tasks can be added.
   task.validate ();
-
-  context.tdb.add (task);
+  context.tdb2.add (task);
 
   // TODO This should be a call in to feedback.cpp.
+/*
   if (context.verbose ("new-id"))
     output = format (STRING_CMD_ADD_FEEDBACK, context.tdb.nextId ()) + "\n";
+*/
 
   context.footnote (onProjectChange (task));
-
-  context.tdb.commit ();
-  context.tdb.unlock ();
+  context.tdb2.commit ();
   return rc;
 }
 

src/commands/CmdHelp.cpp

@@ -125,6 +125,15 @@ int CmdHelp::execute (std::string& output)
            "or at http://taskwarrior.org"
          + "\n"
          + "\n"
+
+         + "<filter>\n"
+           "  Used to restrict the visible data.\n"
+           "\n"
+
+         + "<modfications>\n"
+           "  Changes to apply to the filtered data.\n"
+           "\n"
+
          + "ID is the numeric identifier displayed by the 'task list' command. "
            "You can specify multiple IDs for task commands, and multiple tasks "
            "will be affected.  To specify multiple IDs make sure you use one "

src/commands/CmdImport.cpp

@@ -25,9 +25,11 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
+#include <iostream>
 #include <sstream>
 #include <Context.h>
 #include <Transport.h>
+#include <JSON.h>
 #include <text.h>
 #include <util.h>
 #include <main.h>
@@ -35,6 +37,85 @@
 
 extern Context context;
 
+////////////////////////////////////////////////////////////////////////////////
+CmdImport::CmdImport ()
+{
+  _keyword     = "import";
+  _usage       = "task import <file> [<file> ...]";
+  _description = "Imports JSON files.";
+  _read_only   = false;
+  _displays_id = false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int CmdImport::execute (std::string& output)
+{
+  int rc = 0;
+
+	// Use the description as a file name.
+  Arguments words = context.args.extract_simple_words ();
+  if (! words.size ())
+    throw std::string ("You must specify a file to import.");
+
+  std::vector <Triple>::iterator word;
+  for (word = words.begin (); word != words.end (); ++word)
+  {
+    std::string file = word->_first;
+    std::cout << "Importing '" << file << "'\n";
+
+    std::string tmpfile = "";
+    Uri uri (file);
+    uri.parse ();
+
+    Transport* transport;
+    if ((transport = Transport::getTransport (uri)) != NULL)
+    {
+      std::string location (context.config.get ("data.location"));
+      tmpfile = location + "/import.data";
+      transport->recv (tmpfile);
+      delete transport;
+
+      file = tmpfile;
+    }
+
+    // Load the file.
+    std::vector <std::string> lines;
+    File::read (file, lines);
+
+    std::vector <std::string>::iterator line;
+    for (line = lines.begin (); line != lines.end (); ++line)
+    {
+      std::string object = trimLeft (
+                             trimRight (
+                               trimRight (
+                                 trim (*line), ","),
+                               "]"),
+                             "[");
+
+      // Parse the whole thing.
+      json::value* root = json::parse (object);
+      std::cout << root->dump ()
+                << "\n";
+
+/*
+      // For each object element...
+      std::map <std::string, json::value*>::iterator i;
+      for (i  = ((std::map <std::string, json::value*>*)root)->begin ();
+           i != ((std::map <std::string, json::value*>*)root)->end ();
+           ++i)
+      {
+        Task task;
+
+        // TODO Navigate each object.
+      }
+*/
+    }
+  }
+
+  return rc;
+}
+
+#ifdef OLD_STYLE
 ////////////////////////////////////////////////////////////////////////////////
 CmdImport::CmdImport ()
 {
@@ -1368,5 +1449,5 @@ int CmdImport::execute (std::string& output)
 */
   return rc;
 }
-
+#endif
 ////////////////////////////////////////////////////////////////////////////////

src/commands/CmdImport.h

@@ -31,6 +31,14 @@
 #include <string>
 #include <Command.h>
 
+class CmdImport : public Command
+{
+public:
+  CmdImport ();
+  int execute (std::string&);
+};
+
+/*
 class CmdImport : public Command
 {
 public:
@@ -62,6 +70,7 @@ private:
   std::string CSV (const std::vector <std::string>&);
   std::string YAML (const std::vector <std::string>&);
 };
+*/
 
 #endif
 ////////////////////////////////////////////////////////////////////////////////

src/commands/CmdLog.cpp

@@ -51,12 +51,6 @@ int CmdLog::execute (std::string& output)
 {
   int rc = 0;
 
-  // Must load pending to resolve dependencies, and to provide a new ID.
-  context.tdb.lock (context.config.getBoolean ("locking"));
-
-  std::vector <Task> all;
-  context.tdb.loadPending (all);
-
   // Every task needs a UUID.
   Task task;
   task.set ("uuid", uuid ());
@@ -82,13 +76,10 @@ int CmdLog::execute (std::string& output)
 
   // Only valid tasks can be added.
   task.validate ();
-
-  context.tdb.add (task);
+  context.tdb2.add (task);
 
   context.footnote (onProjectChange (task));
-
-  context.tdb.commit ();
-  context.tdb.unlock ();
+  context.tdb2.commit ();
 
   if (context.config.getBoolean ("echo.command"))
     output = std::string (STRING_CMD_LOG_LOGGED) + "\n";

src/commands/Command.cpp

@@ -283,6 +283,48 @@ void Command::filter (std::vector <Task>& input, std::vector <Task>& output)
     output = input;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+void Command::filter (std::vector <Task>& output)
+{
+  Timer timer ("Command::filter");
+
+  Arguments f;
+  if (read_only ())
+    f = context.args.extract_read_only_filter ();
+  else
+    f = context.args.extract_write_filter ();
+
+  if (f.size ())
+  {
+    const std::vector <Task>& pending = context.tdb2.pending.get_tasks ();
+    const std::vector <Task>& completed = context.tdb2.completed.get_tasks (); // TODO Optional
+
+    Expression e (f);
+
+    output.clear ();
+    std::vector <Task>::const_iterator task;
+    for (task = pending.begin (); task != pending.end (); ++task)
+      if (e.eval (*task))
+        output.push_back (*task);
+
+    for (task = completed.begin (); task != completed.end (); ++task)
+      if (e.eval (*task))
+        output.push_back (*task);
+  }
+  else
+  {
+    const std::vector <Task>& pending = context.tdb2.pending.get_tasks ();
+    const std::vector <Task>& completed = context.tdb2.completed.get_tasks ();
+
+    std::vector <Task>::const_iterator task;
+    for (task = pending.begin (); task != pending.end (); ++task)
+      output.push_back (*task);
+
+    for (task = completed.begin (); task != completed.end (); ++task)
+      output.push_back (*task);
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Apply the modifications in arguments to the task.
 void Command::modify_task_description_replace (Task& task, Arguments& arguments)

src/commands/Command.h

@@ -54,6 +54,8 @@ public:
 
 protected:
   void filter (std::vector <Task>&, std::vector <Task>&);
+  void filter (std::vector <Task>&);
+
   void modify_task_description_replace (Task&, Arguments&);
   void modify_task_description_prepend (Task&, Arguments&);
   void modify_task_description_append (Task&, Arguments&);

src/en-US.h

@@ -182,7 +182,7 @@
 #define STRING_CMD_IDS_USAGE_RANGE   "Shows only the IDs of matching tasks, in the form of a range."
 #define STRING_CMD_IDS_USAGE_LIST    "Shows only the IDs of matching tasks, in the form of a list."
 #define STRING_CMD_IDS_USAGE_ZSH     "Shows the IDs and descriptions of matching tasks."
-#define STRING_CMD_EXPORT_USAGE      "Executes external commands and scripts"
+#define STRING_CMD_EXPORT_USAGE      "Exports tasks in JSON format."
 #define STRING_CMD_INFO_USAGE        "Shows all data and metadata for specified tasks."
 #define STRING_CMD_INFO_BLOCKED      "This task blocked by"
 #define STRING_CMD_INFO_BLOCKING     "This task is blocking"