intl/uconv/ucvlatin/nsUnicodeToUCS2BE.h

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  15  * The Original Code is Mozilla Communicator client code.
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  37
  38 #ifndef nsUnicodeToUCS2BE_h___
  39 #define nsUnicodeToUCS2BE_h___
  40
  41 #include "nsUCSupport.h"
  42
  43 class nsUnicodeToUTF16BE: public nsBasicEncoder
  44 {
  45 public:
  46   nsUnicodeToUTF16BE() { mBOM = 0;}
  47
  48   //--------------------------------------------------------------------
  49   // Interface nsIUnicodeEncoder [declaration]
  50
  51   NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
  52       char * aDest, PRInt32 * aDestLength);
  53   NS_IMETHOD GetMaxLength(const PRUnichar * aSrc, PRInt32 aSrcLength,
  54       PRInt32 * aDestLength);
  55   NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
  56   NS_IMETHOD Reset();
  57   NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
  58       nsIUnicharEncoder * aEncoder, PRUnichar aChar);
  59
  60   //--------------------------------------------------------------------
  61   // Interface nsICharRepresentable [declaration]
  62   NS_IMETHOD FillInfo(PRUint32 *aInfo);
  63
  64 protected:
  65   PRUnichar mBOM;
  66   NS_IMETHOD CopyData(char* aDest, const PRUnichar* aSrc, PRInt32 aLen  );
  67 };
  68
  69 class nsUnicodeToUTF16LE: public nsUnicodeToUTF16BE
  70 {
  71 public:
  72   nsUnicodeToUTF16LE() { mBOM = 0;}
  73
  74 protected:
  75   NS_IMETHOD CopyData(char* aDest, const PRUnichar* aSrc, PRInt32 aLen  );
  76 };
  77
  78 // XXX In theory, we have to check the endianness at run-time because some
  79 // modern RISC processors can be run at both LE and BE.
  80 #ifdef IS_LITTLE_ENDIAN
  81 class nsUnicodeToUTF16: public nsUnicodeToUTF16LE
  82 #elif defined(IS_BIG_ENDIAN)
  83 class nsUnicodeToUTF16: public nsUnicodeToUTF16BE
  84 #else
  85 #error "Unknown endianness"
  86 #endif
  87 {
  88 public:
  89   nsUnicodeToUTF16() { mBOM = 0xFEFF;}
  90 };
  91
  92 #endif /* nsUnicodeToUCS2BE_h___ */