gecko/intl/unicharutil/nsSaveAsCharset.h

74 lines
2.3 KiB
C++

/* -*- 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"
#include "nsCOMPtr.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();
//
// nsISupports
//
NS_DECL_ISUPPORTS
//
// nsIEntityConverter
//
NS_IMETHOD Init(const char *charset, uint32_t attr, uint32_t entityVersion) MOZ_OVERRIDE;
NS_IMETHOD Convert(const char16_t *inString, char **_retval) MOZ_OVERRIDE;
NS_IMETHODIMP GetCharset(char * *aCharset) MOZ_OVERRIDE;
protected:
virtual ~nsSaveAsCharset();
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