1 files changed, 16 insertions, 0 deletions
diff --git a/src/BufferedFile.cc b/src/BufferedFile.cc
index 078acb27..080d251d 100644
--- a/src/BufferedFile.cc
+++ b/src/BufferedFile.cc
@@ -35,6 +35,7 @@
 #include "BufferedFile.h"
 
 #include <cstring>
+#include <ostream>
 
 #include "a2io.h"
 #include "util.h"
@@ -102,4 +103,19 @@ bool BufferedFile::eof()
   return open_ && feof(fp_);
 }
 
+size_t BufferedFile::transfer(std::ostream& out)
+{
+  size_t count = 0;
+  char buf[4096];
+  while(1) {
+    size_t r = this->read(buf, sizeof(buf));
+    out.write(buf, r);
+    count += r;
+    if(r < sizeof(buf)) {
+      break;
+    }
+  }
+  return count;
+}
+
 } // namespace aria2