namespace Msp {
namespace DataFile {
+Collection::Collection():
+ fallback(0)
+{ }
+
Collection::~Collection()
{
for(TypeList::iterator i = types.begin(); i!=types.end(); ++i)
delete *i;
}
-void Collection::add_future(const std::string &name)
+const Variant &Collection::get_var(const string &name, const CollectionItemTypeBase *type)
{
- if(items.count(name))
- throw key_error(typeid(ItemMap));
+ ItemMap::iterator i = items.find(name);
+ if(i!=items.end())
+ return i->second;
- for(TypeList::const_iterator i=types.begin(); i!=types.end(); ++i)
- if((*i)->match_name(name))
+ if(type)
+ {
+ bool loaded = false;
+ if(type->can_create())
+ {
+ type->create_item(*this, name);
+ loaded = items.count(name);
+ }
+ for(SourceList::iterator j=sources.begin(); (!loaded && j!=sources.end()); ++j)
+ {
+ (*j)->load(*this, *type, name);
+ loaded = items.count(name);
+ }
+ if(!loaded && fallback)
+ {
+ for(TypeList::const_iterator j=fallback->types.begin(); j!=fallback->types.end(); ++j)
+ if((*j)->is_same_type(*type))
+ {
+ if(fallback->get_status(name, **j))
+ return fallback->get_var(name, *j);
+ break;
+ }
+ }
+ }
+
+ return get_item(items, name);
+}
+
+void Collection::gather_items(list<const Variant *> *vars, list<string> *names, const CollectionItemTypeBase &type, bool include_sources) const
+{
+ for(ItemMap::const_iterator i=items.begin(); i!=items.end(); ++i)
+ if(type.check_item_type(i->second))
{
- items.insert(ItemMap::value_type(name, (*i)->create_future()));
- return;
+ if(vars)
+ vars->push_back(&i->second);
+ if(names)
+ names->push_back(i->first);
}
- /* XXX throw something? If we do, DirectoryCollection needs some way to
- check if a name matches any item type. */
+ if(include_sources && names)
+ gather_names_from_sources(*names, type);
+}
+
+unsigned Collection::get_status(const string &name, const CollectionItemTypeBase &type) const
+{
+ ItemMap::const_iterator i = items.find(name);
+ if(i==items.end())
+ {
+ for(SourceList::const_iterator j=sources.begin(); j!=sources.end(); ++j)
+ if((*j)->is_loadable(type, name))
+ return 2;
+ return 0;
+ }
+
+ return type.check_item_type(i->second);
+}
+
+CollectionItemTypeBase *Collection::get_type_for_item(const Variant &var) const
+{
+ for(TypeList::const_iterator i=types.begin(); i!=types.end(); ++i)
+ if((*i)->check_item_type(var))
+ return *i;
+ return 0;
+}
+
+void Collection::add_source(CollectionSource &s)
+{
+ sources.push_back(&s);
+}
+
+IO::Seekable *Collection::open_from_sources(const string &name)
+{
+ for(SourceList::const_iterator i=sources.begin(); i!=sources.end(); ++i)
+ if(IO::Seekable *io = (*i)->open(name))
+ return io;
+
+ return 0;
+}
+
+void Collection::gather_names_from_sources(list<string> &names, const CollectionItemTypeBase &type) const
+{
+ for(SourceList::const_iterator i=sources.begin(); i!=sources.end(); ++i)
+ {
+ std::list<std::string> available_names = (*i)->get_names(type);
+ for(std::list<std::string>::iterator j=available_names.begin(); j!=available_names.end(); ++j)
+ if(!items.count(*j))
+ names.push_back(*j);
+ }
+}
+
+void Collection::load_items_from_sources(const CollectionItemTypeBase &type)
+{
+ for(SourceList::const_iterator i=sources.begin(); i!=sources.end(); ++i)
+ {
+ std::list<std::string> available_names = (*i)->get_names(type);
+ for(std::list<std::string>::iterator j=available_names.begin(); j!=available_names.end(); ++j)
+ if(!items.count(*j))
+ (*i)->load(*this, type, *j);
+ }
+}
+
+void Collection::set_fallback(Collection *f)
+{
+ fallback = f;
}
}
-CollectionItemTypeBase::CollectionItemTypeBase():
- tag(0)
-{ }
-
CollectionItemTypeBase::~CollectionItemTypeBase()
{
- delete tag;
+ for(vector<ExtractorBase *>::iterator i=extractors.begin(); i!=extractors.end(); ++i)
+ delete *i;
}
void CollectionItemTypeBase::set_keyword(const string &k)