X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Fcollection.cpp;h=9f135f0c0ed8eab31c6ffe730b23fd683b69e98e;hb=5e677b2b3eeb2b3c41216a329f7b1363aade0aed;hp=fbe894a8bb4b073c0baa227655bd2d3ecf3781e3;hpb=bcbe8b90de68e18260313b8f0e8a8dd9c7661903;p=libs%2Fdatafile.git

diff --git a/source/collection.cpp b/source/collection.cpp
index fbe894a..9f135f0 100644
--- a/source/collection.cpp
+++ b/source/collection.cpp
@@ -1,3 +1,4 @@
+#include <set>
 #include "collection.h"
 
 using namespace std;
@@ -5,6 +6,10 @@ using namespace std;
 namespace Msp {
 namespace DataFile {
 
+Collection::Collection():
+	fallback(0)
+{ }
+
 Collection::~Collection()
 {
 	for(TypeList::iterator i = types.begin(); i!=types.end(); ++i)
@@ -30,6 +35,10 @@ const Variant &Collection::get_var(const string &name, const CollectionItemTypeB
 			(*j)->load(*this, *type, name);
 			loaded = items.count(name);
 		}
+		if(!loaded && fallback)
+			if(CollectionItemTypeBase *fb_type = fallback->get_type(*type))
+				if(fallback->get_status(name, *fb_type))
+					return fallback->get_var(name, fb_type);
 	}
 
 	return get_item(items, name);
@@ -58,12 +67,23 @@ unsigned Collection::get_status(const string &name, const CollectionItemTypeBase
 		for(SourceList::const_iterator j=sources.begin(); j!=sources.end(); ++j)
 			if((*j)->is_loadable(type, name))
 				return 2;
+		if(fallback)
+			if(CollectionItemTypeBase *fb_type = fallback->get_type(type))
+				return fallback->get_status(name, *fb_type);
 		return 0;
 	}
 
 	return type.check_item_type(i->second);
 }
 
+CollectionItemTypeBase *Collection::get_type(const CollectionItemTypeBase &type) const
+{
+	for(TypeList::const_iterator j=types.begin(); j!=types.end(); ++j)
+		if((*j)->is_same_type(type))
+			return *j;
+	return 0;
+}
+
 CollectionItemTypeBase *Collection::get_type_for_item(const Variant &var) const
 {
 	for(TypeList::const_iterator i=types.begin(); i!=types.end(); ++i)
@@ -72,20 +92,31 @@ CollectionItemTypeBase *Collection::get_type_for_item(const Variant &var) const
 	return 0;
 }
 
-void Collection::add_source(CollectionSource &s)
+void Collection::add_source(const CollectionSource &s)
 {
 	sources.push_back(&s);
 }
 
+IO::Seekable *Collection::open_raw(const string &name) const
+{
+	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
 {
+	set<string> new_names;
 	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);
+				new_names.insert(*j);
 	}
+	names.insert(names.end(), new_names.begin(), new_names.end());
 }
 
 void Collection::load_items_from_sources(const CollectionItemTypeBase &type)
@@ -95,10 +126,24 @@ void Collection::load_items_from_sources(const CollectionItemTypeBase &type)
 		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);
+			{
+				bool loaded = false;
+				if(type.can_create())
+				{
+					type.create_item(*this, *j);
+					loaded = items.count(*j);
+				}
+				if(!loaded)
+					(*i)->load(*this, type, *j);
+			}
 	}
 }
 
+void Collection::set_fallback(Collection *f)
+{
+	fallback = f;
+}
+
 
 Collection::Loader::Loader(Collection &c):
 	coll(c)