diff -r 000000000000 -r 6474c204b198 intl/unicharutil/src/nsSaveAsCharset.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/unicharutil/src/nsSaveAsCharset.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef nsSaveAsCharset_h__
+#define nsSaveAsCharset_h__
+
+#include "nsStringFwd.h"
+#include "nsTArray.h"
+#include "nsISaveAsCharset.h"
+
+
+#define MASK_FALLBACK(a) (nsISaveAsCharset::mask_Fallback & (a))
+#define MASK_ENTITY(a) (nsISaveAsCharset::mask_Entity & (a))
+#define MASK_CHARSET_FALLBACK(a) (nsISaveAsCharset::mask_CharsetFallback & (a))
+#define ATTR_NO_FALLBACK(a) (nsISaveAsCharset::attr_FallbackNone == MASK_FALLBACK(a) && \
+                             nsISaveAsCharset::attr_EntityAfterCharsetConv != MASK_ENTITY(a))
+
+class nsIUnicodeEncoder;
+class nsIEntityConverter;
+
+class nsSaveAsCharset : public nsISaveAsCharset
+{
+public:
+	
+	//
+	// implementation methods
+	//
+  nsSaveAsCharset();
+  virtual ~nsSaveAsCharset();
+
+	//
+	// nsISupports
+	//
+	NS_DECL_ISUPPORTS
+
+	//
+	// nsIEntityConverter
+	//
+  NS_IMETHOD Init(const char *charset, uint32_t attr, uint32_t entityVersion);
+
+  NS_IMETHOD Convert(const char16_t *inString, char **_retval);
+
+  NS_IMETHODIMP GetCharset(char * *aCharset);
+
+protected:
+
+  NS_IMETHOD DoCharsetConversion(const char16_t *inString, char **outString);
+
+  NS_IMETHOD DoConversionFallBack(uint32_t inUCS4, char *outString, int32_t bufferLength);
+
+  // do the fallback, reallocate the buffer if necessary
+  // need to pass destination buffer info (size, current position and estimation of rest of the conversion)
+  NS_IMETHOD HandleFallBack(uint32_t character, char **outString, int32_t *bufferLength, 
+                            int32_t *currentPos, int32_t estimatedLength);
+
+  nsresult SetupUnicodeEncoder(const char* charset);
+
+  nsresult SetupCharsetList(const char *charsetList);
+
+  const char * GetNextCharset();
+
+  uint32_t mAttribute;                    // conversion attribute
+  uint32_t mEntityVersion;                // see nsIEntityConverter
+  nsCOMPtr<nsIUnicodeEncoder> mEncoder;   // encoder (convert from unicode)
+  nsCOMPtr<nsIEntityConverter> mEntityConverter;
+  nsTArray<nsCString> mCharsetList;
+  int32_t        mCharsetListIndex;
+};
+
+#endif