Add GetExistingWriter to FilesContainerW. Need for re-writing any file in files container (sizes should be equal).

1 files changed, 9 insertions, 0 deletions

diff --git a/coding/file_container.hpp b/coding/file_container.hpp
index e013c5da57..63408b9972 100644
--- a/coding/file_container.hpp
+++ b/coding/file_container.hpp
@@ -71,8 +71,17 @@ public:
 
   FileWriter GetWriter(Tag const & tag);
 
+  /// @todo Subclass from FileWriter to check write bounds (avoid overrun).
+  /// Return this object with additional check.
+  /// @precondition Container should be constructed with OP_WRITE_EXISTING.
+  FileWriter GetExistingWriter(Tag const & tag);
+
+  /// @name Append to existing container.
+  /// @precondition Container should be constructed with OP_APPEND.
+  //@{
   void Append(string const & fName, Tag const & tag);
   void Append(vector<char> const & buffer, Tag const & tag);
+  //@}
 
   void Finish();