1 files changed, 33 insertions, 0 deletions
diff --git a/comm/mailnews/mime/emitters/nsMimeRebuffer.cpp b/comm/mailnews/mime/emitters/nsMimeRebuffer.cpp
new file mode 100644
index 0000000000..136ad7553d
--- /dev/null
+++ b/comm/mailnews/mime/emitters/nsMimeRebuffer.cpp
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <string.h>
+#include "nsMimeRebuffer.h"
+#include "prmem.h"
+
+MimeRebuffer::MimeRebuffer(void) {}
+
+MimeRebuffer::~MimeRebuffer(void) {}
+
+uint32_t MimeRebuffer::GetSize() { return mBuf.Length(); }
+
+uint32_t MimeRebuffer::IncreaseBuffer(const nsACString& addBuf) {
+  mBuf.Append(addBuf);
+  return mBuf.Length();
+}
+
+uint32_t MimeRebuffer::ReduceBuffer(uint32_t numBytes) {
+  if (numBytes == 0) return mBuf.Length();
+
+  if (numBytes >= mBuf.Length()) {
+    mBuf.Truncate();
+    return 0;
+  }
+
+  mBuf.Cut(0, numBytes);
+  return mBuf.Length();
+}
+
+nsACString& MimeRebuffer::GetBuffer() { return mBuf; }