thodg/libiconv/src/cp936ext.h

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• Hash : 3af9cd39
  Author :
  Date : 1999-12-31T12:50:49
  

  Import from libiconv-0.3.
  

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• src/cp936ext.h

• 
  /*
   * CP936 extensions
   */
  
  static const unsigned short cp936ext_2uni_pagea6[181-159] = {
    /* 0xa6 */
                                                            0xfe35,
    0xfe36, 0xfe39, 0xfe3a, 0xfe3f, 0xfe40, 0xfe3d, 0xfe3e, 0xfe41,
    0xfe42, 0xfe43, 0xfe44, 0xfffd, 0xfffd, 0xfe3b, 0xfe3c, 0xfe37,
    0xfe38, 0xfe31, 0xfffd, 0xfe33, 0xfe34,
  };
  static const unsigned short cp936ext_2uni_pagea8[128-122] = {
    /* 0xa8 */
                    0x0251, 0xfffd, 0x0144, 0x0148, 0xfffd, 0x0261,
  };
  
  static int
  cp936ext_mbtowc (conv_t conv, wchar_t *pwc, const unsigned char *s, int n)
  {
    unsigned char c1 = s[0];
    if ((c1 == 0xa6) || (c1 == 0xa8)) {
      if (n >= 2) {
        unsigned char c2 = s[1];
        if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0x80 && c2 < 0xff)) {
          unsigned int i = 190 * (c1 - 0x81) + (c2 - (c2 >= 0x80 ? 0x41 : 0x40));
          unsigned short wc = 0xfffd;
          if (i < 7410) {
            if (i >= 7189 && i < 7211)
              wc = cp936ext_2uni_pagea6[i-7189];
          } else {
            if (i >= 7532 && i < 7538)
              wc = cp936ext_2uni_pagea8[i-7532];
          }
          if (wc != 0xfffd) {
            *pwc = (wchar_t) wc;
            return 2;
          }
        }
        return RET_ILSEQ;
      }
      return RET_TOOFEW(0);
    }
    return RET_ILSEQ;
  }
  
  static const unsigned short cp936ext_page01[16] = {
    0x0000, 0x0000, 0x0000, 0x0000, 0xa8bd, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
    0xa8be, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x48-0x4f*/
  };
  static const unsigned short cp936ext_page02[24] = {
    0x0000, 0xa8bb, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x50-0x57*/
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x58-0x5f*/
    0x0000, 0xa8c0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x60-0x67*/
  };
  static const unsigned short cp936ext_pagefe[24] = {
    0x0000, 0xa6f2, 0x0000, 0xa6f4, 0xa6f5, 0xa6e0, 0xa6e1, 0xa6f0, /*0x30-0x37*/
    0xa6f1, 0xa6e2, 0xa6e3, 0xa6ee, 0xa6ef, 0xa6e6, 0xa6e7, 0xa6e4, /*0x38-0x3f*/
    0xa6e5, 0xa6e8, 0xa6e9, 0xa6ea, 0xa6eb, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
  };
  
  static int
  cp936ext_wctomb (conv_t conv, unsigned char *r, wchar_t wc, int n)
  {
    if (n >= 2) {
      unsigned short c = 0;
      if (wc >= 0x0140 && wc < 0x0150)
        c = cp936ext_page01[wc-0x0140];
      else if (wc >= 0x0250 && wc < 0x0268)
        c = cp936ext_page02[wc-0x0250];
      else if (wc >= 0xfe30 && wc < 0xfe48)
        c = cp936ext_pagefe[wc-0xfe30];
      if (c != 0) {
        r[0] = (c >> 8); r[1] = (c & 0xff);
        return 2;
      }
      return RET_ILSEQ;
    }
    return RET_TOOSMALL;
  }
  

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