Adding framework for an option parser.

git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@448 e378c898-3ddf-0310-93e7-cc216c733640

src/option_handler.cc

@@ -0,0 +1,73 @@
+// rTorrent - BitTorrent client
+// Copyright (C) 2005, Jari Sundell
+//
+// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// Contact:  Jari Sundell <jaris@ifi.uio.no>
+//
+//           Skomakerveien 33
+//           3185 Skoppum, NORWAY
+
+#include "config.h"
+
+#include <stdexcept>
+#include <sigc++/bind.h>
+#include <sigc++/hide.h>
+
+#include "option_handler.h"
+
+OptionHandlerBase::~OptionHandlerBase() {
+}
+
+void
+OptionHandler::insert(const std::string& key, OptionHandlerBase* opt) {
+  iterator itr = find(key);
+
+  if (itr == end()) {
+    Base::insert(value_type(key, opt));
+  } else {
+    delete itr->second;
+    itr->second = opt;
+  }
+}
+
+void
+OptionHandler::erase(const std::string& key) {
+  iterator itr = find(key);
+
+  if (itr == end())
+    return;
+
+  delete itr->second;
+  Base::erase(itr);
+}
+
+void
+OptionHandler::clear() {
+  for (iterator itr = begin(), last = end(); itr != last; ++itr)
+    delete itr->second;
+
+  Base::clear();
+}
+
+void
+OptionHandler::process(const std::string& key, const std::string& arg) const {
+  const_iterator itr = find(key);
+
+  if (itr == end())
+    throw std::runtime_error("Could not find option key matching \"" + key + "\"");
+
+  itr->second->process(key, arg);
+}