X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcollectionsource.h;h=90c36f2fce009768874c42b56c21fbf29d11457d;hb=e3cfc75aa5be3238776caec7f1a437ece7aefa51;hp=61bb11555decbbf85d36500f18ed829073b64f31;hpb=b1bc25649c1f22abf940a807d934f1e9bb780c28;p=libs%2Fdatafile.git

diff --git a/source/collectionsource.h b/source/collectionsource.h
index 61bb115..90c36f2 100644
--- a/source/collectionsource.h
+++ b/source/collectionsource.h
@@ -3,6 +3,7 @@
 
 #include <list>
 #include <string>
+#include <msp/io/seekable.h>
 
 namespace Msp {
 namespace DataFile {
@@ -21,8 +22,9 @@ public:
 
 protected:
 	CollectionSource() { }
-
 public:
+	virtual ~CollectionSource() { }
+
 	/** Determines */
 	virtual bool is_loadable(const CollectionItemTypeBase &type, const std::string &name) const = 0;
 
@@ -31,6 +33,10 @@ public:
 	virtual NameList get_names(const CollectionItemTypeBase &type) const = 0;
 
 	virtual void load(Collection &, const CollectionItemTypeBase &, const std::string &) const = 0;
+
+	/** Opens a file from the source.  The caller is responsible for deleting
+	the returned object when done with it. */
+	virtual IO::Seekable *open(const std::string &) const = 0;
 };
 
 } // namespace DataFile