intl/uconv/nsUTF8ToUnicode.h

   1 /* -*- Mode: C++; tab-width: 2; 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/. */
   5
   6 #ifndef nsUTF8ToUnicode_h___
   7 #define nsUTF8ToUnicode_h___
   8
   9 #include "nsUCSupport.h"
  10
  11 // Class ID for our UTF8ToUnicode charset converter
  12 // {5534DDC0-DD96-11d2-8AAC-00600811A836}
  13 #define NS_UTF8TOUNICODE_CID \
  14   { 0x5534ddc0, 0xdd96, 0x11d2, {0x8a, 0xac, 0x0, 0x60, 0x8, 0x11, 0xa8, 0x36}}
  15
  16 #define NS_UTF8TOUNICODE_CONTRACTID "@mozilla.org/intl/unicode/decoder;1?charset=UTF-8"
  17
  18 //#define NS_ERROR_UCONV_NOUTF8TOUNICODE
  19 //  NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_UCONV, 0x31)
  20
  21 //----------------------------------------------------------------------
  22 // Class nsUTF8ToUnicode [declaration]
  23
  24
  25 /**
  26  * A character set converter from UTF8 to Unicode.
  27  *
  28  * @created         18/Mar/1998
  29  * @modified        04/Feb/2000
  30  * @author  Catalin Rotaru [CATA]
  31  */
  32
  33 class nsUTF8ToUnicode : public nsBasicDecoderSupport
  34 {
  35 public:
  36
  37   /**
  38    * Class constructor.
  39    */
  40   nsUTF8ToUnicode();
  41
  42 protected:
  43
  44   uint32_t mUcs4; // cached Unicode character
  45   uint8_t mState; // cached expected number of bytes per UTF8 character sequence
  46   uint8_t mBytes;
  47   bool mFirst;
  48
  49   //--------------------------------------------------------------------
  50   // Subclassing of nsDecoderSupport class [declaration]
  51
  52   NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength,
  53       int32_t * aDestLength);
  54
  55   //--------------------------------------------------------------------
  56   // Subclassing of nsBasicDecoderSupport class [declaration]
  57
  58   NS_IMETHOD Convert(const char * aSrc, int32_t * aSrcLength,
  59       char16_t * aDest, int32_t * aDestLength);
  60
  61   //--------------------------------------------------------------------
  62   // Subclassing of nsBasicDecoderSupport class [declaration]
  63
  64   NS_IMETHOD Reset();
  65
  66 };
  67
  68 #endif /* nsUTF8ToUnicode_h___ */
  69