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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.
#ifndef OBJECTREGISTRY_HH
#define OBJECTREGISTRY_HH
#include "StringUtil.hh"
#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
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