Make BufferedInStream allocation more available

Allow subclasses to call it, instead of it being strictly internal. This
is useful when a subclass can only provide data in minimum sized chunks.

1 files changed, 6 insertions, 1 deletions

diff --git a/common/rdr/BufferedInStream.h b/common/rdr/BufferedInStream.h
index 84405255..05f7231e 100644
--- a/common/rdr/BufferedInStream.h
+++ b/common/rdr/BufferedInStream.h
@@ -37,8 +37,13 @@ namespace rdr {
 
     virtual size_t pos();
 
+  protected:
+    size_t availSpace() { return start + bufSize - end; }
+
+    void ensureSpace(size_t needed);
+
   private:
-    virtual bool fillBuffer(size_t maxSize) = 0;
+    virtual bool fillBuffer() = 0;
 
     virtual bool overrun(size_t needed);