gtkradiant/libs/modulesystem/modulesmap.h

/*
Copyright (C) 2001-2006, William Joseph.
All Rights Reserved.

This file is part of GtkRadiant.

GtkRadiant 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.

GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#if !defined(INCLUDED_MODULESYSTEM_MODULESMAP_H)
#define INCLUDED_MODULESYSTEM_MODULESMAP_H

#include "modulesystem.h"
#include "string/string.h"
#include <map>
#include <set>

template<typename Type>
class ModulesMap : public Modules<Type>
{
  typedef std::map<CopiedString, Module*> modules_t;
  modules_t m_modules;
public:
  ~ModulesMap()
  {
    for(modules_t::iterator i = m_modules.begin(); i != m_modules.end(); ++i) 
    {
      (*i).second->release();
    }
  }

  typedef modules_t::const_iterator iterator;

  iterator begin() const
  {
    return m_modules.begin();
  }
  iterator end() const
  {
    return m_modules.end();
  }

  void insert(const char* name, Module& module)
  {
    module.capture();
    if(globalModuleServer().getError())
    {
      module.release();
      globalModuleServer().setError(false);
    }
    else
    {
      m_modules.insert(modules_t::value_type(name, &module));
    }
  }

  Type* find(const char* name)
  {
    modules_t::iterator i = m_modules.find(name);
    if(i != m_modules.end())
    {
      return static_cast<Type*>(Module_getTable(*(*i).second));
    }
    return 0;
  }

  Type* findModule(const char* name)
  {
    return find(name);
  }
  void foreachModule(typename Modules<Type>::Visitor& visitor)
  {
    for(modules_t::iterator i = m_modules.begin(); i != m_modules.end(); ++i)
    {
      visitor.visit((*i).first.c_str(), *static_cast<const Type*>(Module_getTable(*(*i).second)));
    }
  }
};

template<typename Type>
class InsertModules : public ModuleServer::Visitor
{
  ModulesMap<Type>& m_modules;
public:
  InsertModules(ModulesMap<Type>& modules)
    : m_modules(modules)
  {
  }
  void visit(const char* name, Module& module)
  {
    m_modules.insert(name, module);
  }
};

template<typename Type>
class ModulesRef
{
  ModulesMap<Type> m_modules;
public:
  ModulesRef(const char* names)
  {
    if(!globalModuleServer().getError())
    {
      if(string_equal(names, "*"))
      {
        InsertModules<Type> visitor(m_modules);
        globalModuleServer().foreachModule(typename Type::Name(), typename Type::Version(), visitor);
      }
      else
      {
        StringTokeniser tokeniser(names);
        for(;;)
        {
          const char* name = tokeniser.getToken();
          if(string_empty(name))
          {
            break;
          }
          Module* module = globalModuleServer().findModule(typename Type::Name(), typename Type::Version(), name);
          if(module == 0)
          {
            globalModuleServer().setError(true);
            globalErrorStream() << "ModulesRef::initialise: type=" << makeQuoted(typename Type::Name()) << " version=" << makeQuoted(typename Type::Version()) << " name=" << makeQuoted(name) << " - not found\n";
            break;
          }
          else
          {
            m_modules.insert(name, *module);
          }
        }
      }
    }
  }
  ModulesMap<Type>& get()
  {
    return m_modules;
  }
};

#endif