1 files changed, 33 insertions, 0 deletions
diff --git a/comm/mailnews/base/src/nsMsgCompressIStream.h b/comm/mailnews/base/src/nsMsgCompressIStream.h
new file mode 100644
index 0000000000..642d35f9fa
--- /dev/null
+++ b/comm/mailnews/base/src/nsMsgCompressIStream.h
@@ -0,0 +1,33 @@
+/* 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 "msgCore.h"
+#include "nsIAsyncInputStream.h"
+#include "nsIInputStream.h"
+#include "nsCOMPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "zlib.h"
+
+class nsMsgCompressIStream final : public nsIAsyncInputStream {
+ public:
+  nsMsgCompressIStream();
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+  NS_DECL_NSIINPUTSTREAM
+  NS_DECL_NSIASYNCINPUTSTREAM
+
+  nsresult InitInputStream(nsIInputStream* rawStream);
+
+ protected:
+  ~nsMsgCompressIStream();
+  nsresult DoInflation();
+  nsCOMPtr<nsIInputStream> m_iStream;
+  mozilla::UniquePtr<char[]> m_zbuf;
+  mozilla::UniquePtr<char[]> m_databuf;
+  char* m_dataptr;
+  uint32_t m_dataleft;
+  bool m_inflateAgain;
+  z_stream m_zstream;
+};