import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

browser/components/feeds/nsFeedSniffer.h

@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 8; 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 "nsIContentSniffer.h"
+#include "nsIStreamListener.h"
+#include "nsString.h"
+#include "mozilla/Attributes.h"
+
+class nsFeedSniffer final : public nsIContentSniffer,
+                                   nsIStreamListener
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSICONTENTSNIFFER
+  NS_DECL_NSIREQUESTOBSERVER
+  NS_DECL_NSISTREAMLISTENER
+
+  static nsresult AppendSegmentToString(nsIInputStream* inputStream,
+                                        void* closure,
+                                        const char* rawSegment,
+                                        uint32_t toOffset,
+                                        uint32_t count,
+                                        uint32_t* writeCount);
+
+protected:
+  ~nsFeedSniffer() {}
+
+  nsresult ConvertEncodedData(nsIRequest* request, const uint8_t* data,
+                              uint32_t length);
+
+private:
+  nsCString mDecodedData;
+};
+