intl/uconv/ucvlatin/nsUTF7ToUnicode.h

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  37
  38 #ifndef nsUTF7ToUnicode_h___
  39 #define nsUTF7ToUnicode_h___
  40
  41 #include "nsUCSupport.h"
  42
  43 //----------------------------------------------------------------------
  44 // Class nsBasicUTF7Decoder [declaration]
  45
  46 /**
  47  * Basic class for a character set converter from UTF-7 to Unicode.
  48  *
  49  * @created         03/Jun/1999
  50  * @author  Catalin Rotaru [CATA]
  51  */
  52 class nsBasicUTF7Decoder : public nsBufferDecoderSupport
  53 {
  54 public:
  55
  56   /**
  57    * Class constructor.
  58    */
  59   nsBasicUTF7Decoder(char aLastChar, char aEscChar);
  60
  61 protected:
  62
  63   PRInt32                   mEncoding;      // current encoding
  64   PRUint32                  mEncBits;
  65   PRInt32                   mEncStep;
  66   char                      mLastChar;
  67   char                      mEscChar;
  68   PRBool                    mFreshBase64;
  69
  70   nsresult DecodeDirect(const char * aSrc, PRInt32 * aSrcLength,
  71       PRUnichar * aDest, PRInt32 * aDestLength);
  72   nsresult DecodeBase64(const char * aSrc, PRInt32 * aSrcLength,
  73       PRUnichar * aDest, PRInt32 * aDestLength);
  74   PRUint32 CharToValue(char aChar);
  75
  76   //--------------------------------------------------------------------
  77   // Subclassing of nsBufferDecoderSupport class [declaration]
  78
  79   NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
  80       PRUnichar * aDest, PRInt32 * aDestLength);
  81   NS_IMETHOD Reset();
  82 };
  83
  84 //----------------------------------------------------------------------
  85 // Class nsUTF7ToUnicode [declaration]
  86
  87 /**
  88  * A character set converter from Modified UTF7 to Unicode.
  89  *
  90  * @created         18/May/1999
  91  * @author  Catalin Rotaru [CATA]
  92  */
  93 class nsUTF7ToUnicode : public nsBasicUTF7Decoder
  94 {
  95 public:
  96
  97   /**
  98    * Class constructor.
  99    */
 100   nsUTF7ToUnicode();
 101
 102 };
 103
 104 #endif /* nsUTF7ToUnicode_h___ */