src/FbTk/ObjectRegistry.hh (raw)
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// ObjectRegistry.hh for FbTk // Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org) // // 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. // $Id: $ #ifndef OBJECTREGISTRY_HH #define OBJECTREGISTRY_HH #include "StringUtil.hh" #include <string> #include <map> using std::string; namespace FbTk { #define REGISTER_OBJECT_PARSER(name, parser, type) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<type>::instance().registerObject(#name, parser); \ } #define REGISTER_OBJECT_PARSER_NSBASE(name, parser, space, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<space::base >::instance().registerObject(#name, parser); \ } /* Include some basic Object creators */ template <typename Derived, typename Base> Base *ObjectCreator(const string &name, const string &args, bool trusted) { return new Derived(); } #define REGISTER_OBJECT(name, derived, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<base >::instance().registerObject(#name, FbTk::ObjectCreator<derived, base >); \ } #define REGISTER_OBJECT_NSBASE(name, derived, space, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<space::base >::instance().registerObject(#name, FbTk::ObjectCreator<derived, space::base >); \ } template <typename Derived, typename Base> Base *ObjectCreatorWithArgs(const string &name, const string &args, bool trusted) { return new Derived(args); } #define REGISTER_OBJECT_WITH_ARGS(name, derived, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<base >::instance().registerObject(#name, FbTk::ObjectCreatorWithArgs<derived, base >); \ } #define REGISTER_OBJECT_WITH_ARGS_NSBASE(name, derived, space, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<space::base >::instance().registerObject(#name, FbTk::ObjectCreatorWithArgs<derived, space::base >); \ } template <typename Derived, typename Base> Base *UntrustedObjectCreator(const string &name, const string &args, bool trusted) { if (!trusted) return 0; return new Derived(); } #define REGISTER_UNTRUSTED_OBJECT(name, derived, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<base >::instance().registerObject(#name, FbTk::UntrustedObjectCreator<derived, base >); \ } #define REGISTER_UNTRUSTED_OBJECT_NSBASE(name, derived, space, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<space::base >::instance().registerObject(#name, FbTk::UntrustedObjectCreator<derived, space::base >); \ } template <typename Derived, typename Base> Base * UntrustedObjectCreatorWithArgs(const string &name, const string &args, bool trusted) { if (!trusted) return 0; return new Derived(args); } #define REGISTER_UNTRUSTED_OBJECT_WITH_ARGS(name, derived, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<base >::instance().registerObject(#name, FbTk::UntrustedObjectCreatorWithArgs<derived, base >); \ } #define REGISTER_UNTRUSTED_OBJECT_WITH_ARGS_NSBASE(name, derived, space, base) \ namespace { \ static const bool p_register_##type_##name = FbTk::ObjectRegistry<space::base >::instance().registerObject(#name, FbTk::UntrustedObjectCreatorWithArgs<derived, space::base >); \ } template <typename Base> class ObjectRegistry { public: typedef Base * CreateFunction(const string &name, const string &args, bool trusted); typedef std::map<string, CreateFunction *> CreatorMap; static ObjectRegistry<Base > &instance() { static ObjectRegistry<Base > s_instance; return s_instance; } Base *parse(const string &name, const string &args, bool trusted = true) const { string lc = StringUtil::toLower(name); typename CreatorMap::const_iterator it = m_creators.find(lc.c_str()); if (it == m_creators.end()) return 0; else return it->second(lc, args, trusted); } Base *parse(const string &line, bool trusted = true) const { // parse args and command string command, args; StringUtil::getFirstWord(line, command, args); StringUtil::removeFirstWhitespace(args); StringUtil::removeTrailingWhitespace(args); // now we have parsed command and args return parse(command, args, trusted); } bool registerObject(string name, CreateFunction createFunction) { name = StringUtil::toLower(name); m_creators[name] = createFunction; return true; } const CreatorMap creatorMap() const { return m_creators; } private: ObjectRegistry() {} ~ObjectRegistry() {} CreatorMap m_creators; }; }; // end namespace FbTk #endif // OBJECTREGISTRY_HH |