The Tor Browser: intl/uconv/ucvcn/nsUnicodeToGBK.h@fc2d59ddac77

     1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6  /**

     7  * A character set converter from Unicode to GBK.

     8  *

     9  *

    10  * @created         08/Sept/1999

    11  * @author  Yueheng Xu, Yueheng.Xu@intel.com

    12  */

    14 #ifndef nsUnicodeToGBK_h___

    15 #define nsUnicodeToGBK_h___

    17 #include "nsUCSupport.h"

    18 #include "nsCOMPtr.h"

    19 #include "nsIUnicodeEncoder.h"

    20 #include "nsGBKConvUtil.h"

    21 //----------------------------------------------------------------------

    22 // Class nsUnicodeToGBK [declaration]

    24 class nsUnicodeToGBK: public nsEncoderSupport

    25 {

    26 public:

    28   /**

    29    * Class constructor.

    30    */

    31   nsUnicodeToGBK(uint32_t aMaxLengthFactor = 2);

    32   virtual ~nsUnicodeToGBK() {}

    34 protected:

    36   //--------------------------------------------------------------------

    37   // Subclassing of nsEncoderSupport class [declaration]

    38   NS_IMETHOD ConvertNoBuff(const char16_t * aSrc,

    39                             int32_t * aSrcLength,

    40                             char * aDest,

    41                             int32_t * aDestLength);

    43   NS_IMETHOD ConvertNoBuffNoErr(const char16_t * aSrc, int32_t * aSrcLength,

    44                                 char * aDest, int32_t * aDestLength)

    45   {

    46     return NS_OK;

    47   }  // just make it not abstract;

    49   virtual void CreateExtensionEncoder();

    50   virtual void Create4BytesEncoder();

    52   nsCOMPtr<nsIUnicodeEncoder> mExtensionEncoder;

    53   nsCOMPtr<nsIUnicodeEncoder> m4BytesEncoder;

    54 protected:

    55   char16_t mSurrogateHigh;

    56   nsGBKConvUtil mUtil;

    57   bool TryExtensionEncoder(char16_t aChar, char* aDest, int32_t* aOutLen);

    58   bool Try4BytesEncoder(char16_t aChar, char* aDest, int32_t* aOutLen);

    59   virtual bool EncodeSurrogate(char16_t aSurrogateHigh, char16_t aSurrogateLow, char* aDest);

    60 };

    62 class nsUnicodeToGB18030: public nsUnicodeToGBK

    63 {

    64 public:

    65   nsUnicodeToGB18030() : nsUnicodeToGBK(4) {}

    66   virtual ~nsUnicodeToGB18030() {}

    67 protected:

    68   virtual void CreateExtensionEncoder();

    69   virtual void Create4BytesEncoder();

    70   virtual bool EncodeSurrogate(char16_t aSurrogateHigh, char16_t aSurrogateLow, char* aDest);

    71 };

    73 #endif /* nsUnicodeToGBK_h___ */

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