X-Git-Url: http://git.tdb.fi/?p=libs%2Fdatafile.git;a=blobdiff_plain;f=source%2Fcollection.cpp;h=984fb74da8e7a6007645e6f85aa002b8ae6f894a;hp=2333aaf2726082a6214d2b950aa4570ebc1ea64b;hb=9b1656018f783eb4aad2fbdc1de1404691e89bb1;hpb=a7272165a9dc6a1e9c408e77f96530a7d3aa24e1

diff --git a/source/collection.cpp b/source/collection.cpp
index 2333aaf..984fb74 100644
--- a/source/collection.cpp
+++ b/source/collection.cpp
@@ -5,6 +5,10 @@ using namespace std;
 namespace Msp {
 namespace DataFile {
 
+Collection::Collection():
+	fallback(0)
+{ }
+
 Collection::~Collection()
 {
 	for(TypeList::iterator i = types.begin(); i!=types.end(); ++i)
@@ -30,11 +34,50 @@ const Variant &Collection::get_var(const string &name, const CollectionItemTypeB
 			(*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))
+		{
+			if(vars)
+				vars->push_back(&i->second);
+			if(names)
+				names->push_back(i->first);
+		}
+
+	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)
@@ -48,6 +91,42 @@ 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;
+
+	throw IO::file_not_found(name);
+}
+
+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;
+}
+
 
 Collection::Loader::Loader(Collection &c):
 	coll(c)