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thodg/libiconv/src/gb12345.h

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  • Author : Bruno Haible
    Date : 2000-11-20 18:30:25
    Hash : 1ca2adf0
    Message : Use ucs4_t instead of locally defined wchar_t.

  • src/gb12345.h
  • /*
     * GB/T 12345-1990
     */
    
    /*
     * GB/T 12345-1990 is a traditional chinese counterpart of GB 2312-1986.
     * According to the unicode.org tables:
     * 2146 characters have been changed to their traditional counterpart,
     * 103 characters have been added, no characters have been removed.
     * Therefore we use an auxiliary table, which contains only the changes.
     */
    
    #include "gb12345ext.h"
    
    static int
    gb12345_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
    {
      int ret;
    
      /* The gb12345ext table overrides some entries in the gb2312 table. */
      /* Try the GB12345 extensions -> Unicode table. */
      ret = gb12345ext_mbtowc(conv,pwc,s,n);
      if (ret != RET_ILSEQ)
        return ret;
      /* Try the GB2312 -> Unicode table. */
      ret = gb2312_mbtowc(conv,pwc,s,n);
      return ret;
    }
    
    static int
    gb12345_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
    {
      int ret;
    
      /* The gb12345ext table overrides some entries in the gb2312 table. */
      /* Try the Unicode -> GB12345 extensions table. */
      ret = gb12345ext_wctomb(conv,r,wc,n);
      if (ret != RET_ILSEQ)
        return ret;
      /* Try the Unicode -> GB2312 table, and check that the resulting GB2312
         byte sequence is not overridden by the GB12345 extensions table. */
      ret = gb2312_wctomb(conv,r,wc,n);
      if (ret == 2 && gb12345ext_mbtowc(conv,&wc,r,2) == 2)
        return RET_ILSEQ;
      else
        return ret;
    }