author Wes Kocher <>
Wed, 29 Jan 2014 15:30:42 -0800
changeset 176108 095aa30cb6ef6a6772808db30e4ec3685a2d7d76
parent 163794 19af7baaf26e984eceec910174b968386bbd7ed2
child 179103 5a9badd6db004310b9d1aca5db25ef4c275a4362
permissions -rw-r--r--
Backed out changeset 82bc631a9e53 (bug 950240) a=backout CLOSED TREE

/* -*- 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 */

#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
	// implementation methods
  virtual ~nsSaveAsCharset();

	// nsISupports

	// nsIEntityConverter
  NS_IMETHOD Init(const char *charset, uint32_t attr, uint32_t entityVersion);

  NS_IMETHOD Convert(const PRUnichar *inString, char **_retval);

  NS_IMETHODIMP GetCharset(char * *aCharset);


  NS_IMETHOD DoCharsetConversion(const PRUnichar *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;