varnish-cache/bin/varnishtest/teken_wcwidth.h
0 
/*
1 
 * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
2 
 *
3 
 * Permission to use, copy, modify, and distribute this software
4 
 * for any purpose and without fee is hereby granted. The author
5 
 * disclaims all warranties with regard to this software.
6 
 *
7 
 * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
8 
 *
9 
 * $FreeBSD: head/sys/teken/teken_wcwidth.h 332297 2018-04-08 19:23:50Z phk $
10 
 */
11 





12
  
  
struct interval {





13
  
  
  teken_char_t first;





14
  
  
  teken_char_t last;





15
  
  
};





16
  
  





17
  
  
/* auxiliary function for binary search in interval table */





18
  5015266
  
static int bisearch(teken_char_t ucs, const struct interval *table, int max) {





19
  5015266
  
  int min = 0;





20
  
  
  int mid;





21
  
  





22
  5015266
  
  if (ucs < table[0].first || ucs > table[max].last)





23
  4993106
  
    return 0;





24
  177280
  
  while (max >= min) {





25
  155120
  
    mid = (min + max) / 2;





26
  155120
  
    if (ucs > table[mid].last)





27
  110880
  
      min = mid + 1;





28
  44240
  
    else if (ucs < table[mid].first)





29
  44240
  
      max = mid - 1;





30
  
  
    else





31
  0
  
      return 1;





32
  
  
  }





33
  
  





34
  22160
  
  return 0;





35
  5015266
  
}





36
  
  





37
  5018421
  
static int teken_wcwidth(teken_char_t ucs)





38
  
  
{





39
  
  
  /* sorted list of non-overlapping intervals of non-spacing characters */





40
  
  
  /* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */





41
  
  
  static const struct interval combining[] = {





42
  
  
    { 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },





43
  
  
    { 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },





44
  
  
    { 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },





45
  
  
    { 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },





46
  
  
    { 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },





47
  
  
    { 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },





48
  
  
    { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },





49
  
  
    { 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },





50
  
  
    { 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },





51
  
  
    { 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },





52
  
  
    { 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },





53
  
  
    { 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },





54
  
  
    { 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },





55
  
  
    { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },





56
  
  
    { 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },





57
  
  
    { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },





58
  
  
    { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },





59
  
  
    { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },





60
  
  
    { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },





61
  
  
    { 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },





62
  
  
    { 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },





63
  
  
    { 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },





64
  
  
    { 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },





65
  
  
    { 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },





66
  
  
    { 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },





67
  
  
    { 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },





68
  
  
    { 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },





69
  
  
    { 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },





70
  
  
    { 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },





71
  
  
    { 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },





72
  
  
    { 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },





73
  
  
    { 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },





74
  
  
    { 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },





75
  
  
    { 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },





76
  
  
    { 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },





77
  
  
    { 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },





78
  
  
    { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },





79
  
  
    { 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },





80
  
  
    { 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },





81
  
  
    { 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },





82
  
  
    { 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },





83
  
  
    { 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },





84
  
  
    { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },





85
  
  
    { 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },





86
  
  
    { 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },





87
  
  
    { 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },





88
  
  
    { 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },





89
  
  
    { 0xE0100, 0xE01EF }





90
  
  
  };





91
  
  





92
  
  
  /* test for 8-bit control characters */





93
  5018421
  
  if (ucs == 0)





94
  0
  
    return 0;





95
  5018421
  
  if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))





96
  7294
  
    return -1;





97
  
  





98
  
  
  /* binary search in table of non-spacing characters */





99
  5018661
  
  if (bisearch(ucs, combining,





100
  
  
               sizeof(combining) / sizeof(struct interval) - 1))





101
  0
  
    return 0;





102
  
  





103
  
  
  /* if we arrive here, ucs is not a combining or C0/C1 control character */





104
  
  





105
  5015301
  
  return 1 +





106
  5040821
  
    (int)(ucs >= 0x1100 &&





107
  25520
  
     (ucs <= 0x115f ||                    /* Hangul Jamo init. consonants */





108
  22160
  
      ucs == 0x2329 || ucs == 0x232a ||





109
  22160
  
      (ucs >= 0x2e80 && ucs <= 0xa4cf &&





110
  0
  
       ucs != 0x303f) ||                  /* CJK ... Yi */





111
  22160
  
      (ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */





112
  23840
  
      (ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */





113
  23520
  
      (ucs >= 0xfe10 && ucs <= 0xfe19) || /* Vertical forms */





114
  23200
  
      (ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */





115
  22880
  
      (ucs >= 0xff00 && ucs <= 0xff60) || /* Fullwidth Forms */





116
  22560
  
      (ucs >= 0xffe0 && ucs <= 0xffe6) ||





117
  44320
  
      (ucs >= 0x20000 && ucs <= 0x2fffd) ||





118
  22080
  
      (ucs >= 0x30000 && ucs <= 0x3fffd)));





119
  5015541
  
}