Enhancement - Object integration

- Began the big integration festival by moving all objects out of
  the sandbox.
- Hooked up one error message to context.stringtable, just to make
  a point.

src/Context.cpp

@@ -0,0 +1,172 @@
+////////////////////////////////////////////////////////////////////////////////
+// task - a command line task list manager.
+//
+// Copyright 2006 - 2009, Paul Beckingham.
+// All rights reserved.
+//
+// This program is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation; either version 2 of the License, or (at your option) any later
+// version.
+//
+// This program 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.,
+//     51 Franklin Street, Fifth Floor,
+//     Boston, MA
+//     02110-1301
+//     USA
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <pwd.h>
+#include "Context.h"
+#include "text.h"
+#include "util.h"
+#include "task.h"
+#include "../auto.h"
+
+////////////////////////////////////////////////////////////////////////////////
+Context::Context ()
+: config ()
+, filter ()
+, keymap ()
+, sequence ()
+, task ()
+, tdb ()
+, stringtable ()
+{
+  // Set up randomness.
+#ifdef HAVE_SRANDOM
+  srandom (time (NULL));
+#else
+  srand (time (NULL));
+#endif
+}
+
+////////////////////////////////////////////////////////////////////////////////
+Context::Context (const Context& other)
+{
+  throw std::string ("unimplemented Context::Context");
+  config      = other.config;
+  filter      = other.filter;
+  keymap      = other.keymap;
+  sequence    = other.sequence;
+  task        = other.task;
+  tdb         = other.tdb;
+  stringtable = other.stringtable;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+Context& Context::operator= (const Context& other)
+{
+  throw std::string ("unimplemented Context::operator=");
+  if (this != &other)
+  {
+    config      = other.config;
+    filter      = other.filter;
+    keymap      = other.keymap;
+    sequence    = other.sequence;
+    task        = other.task;
+    tdb         = other.tdb;
+    stringtable = other.stringtable;
+  }
+
+  return *this;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+Context::~Context ()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void Context::initialize (int argc, char** argv)
+{
+  // Load the configuration file from the home directory.  If the file cannot
+  // be found, offer to create a sample one.
+  loadCorrectConfigFile (argc, argv);
+
+  // When redirecting output to a file, do not use color, curses.
+  if (!isatty (fileno (stdout)))
+  {
+    config.set ("curses", "off");
+
+    if (! config.get (std::string ("_forcecolor"), false))
+      config.set ("color",  "off");
+  }
+
+  // Load appropriate stringtable as soon after the config file as possible, to
+  // allow all subsequent messages to be localizable.
+  std::string location = expandPath (config.get ("data.location"));
+  std::string locale = config.get ("locale");
+  if (locale != "")
+    stringtable.load (location + "/strings." + locale);
+
+  // TODO Handle "--version, -v" right here.
+
+  // init TDB.
+  std::vector <std::string> all;
+  split (all, location, ',');
+  foreach (path, all)
+    tdb.location (expandPath (*path));
+
+  // TODO Load pending.data.
+  // TODO Load completed.data.
+  // TODO Load deleted.data.
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int Context::run ()
+{
+  // TODO Dispatch to command handlers.
+  // TODO Auto shadow update.
+  // TODO Auto gc.
+  // TODO tdb.load (Filter);
+
+  throw std::string ("unimplemented Context::run");
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int Context::interactive ()
+{
+  throw std::string ("unimplemented Context::interactive");
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void Context::loadCorrectConfigFile (int argc, char** argv)
+{
+  for (int i = 1; i < argc; ++i)
+  {
+    if (! strncmp (argv[i], "rc:", 3))
+    {
+      if (! access (&(argv[i][3]), F_OK))
+      {
+        std::string file = &(argv[i][3]);
+        config.load (file);
+        return;
+      }
+      else
+        throw std::string ("Could not read configuration file '") + &(argv[i][3]) + "'";
+    }
+  }
+
+  struct passwd* pw = getpwuid (getuid ());
+  if (!pw)
+    throw std::string ("Could not read home directory from passwd file.");
+
+  std::string file = pw->pw_dir;
+  config.createDefault (file);
+
+  // TODO Apply overrides of type: "rc.name:value"
+}
+
+////////////////////////////////////////////////////////////////////////////////