/libraries/vendor/joomla/string/src/phputf8/utils/patterns.php

https://gitlab.com/vitaliylukin91/idea-rating · PHP · 64 lines · 30 code · 3 blank · 31 comment · 0 complexity · 0a730cb180908e3784f4caf1c017d1a8 MD5 · raw file 

    

  1. <?php
    2. 

  2. /**
    3. 

  3. * PCRE Regular expressions for UTF-8. Note this file is not actually used by
    4. 

  4. * the rest of the library but these regular expressions can be useful to have
    5. 

  5. * available.
    6. 

  6. * @see http://www.w3.org/International/questions/qa-forms-utf-8
    7. 

  7. * @package utf8
    8. 

  8. */
    9. 

  9. 

  10. //--------------------------------------------------------------------
    11. 

  11. /**
    12. 

  12. * PCRE Pattern to check a UTF-8 string is valid
    13. 

  13. * Comes from W3 FAQ: Multilingual Forms
    14. 

  14. * Note: modified to include full ASCII range including control chars
    15. 

  15. * @see http://www.w3.org/International/questions/qa-forms-utf-8
    16. 

  16. * @package utf8
    17. 

  17. */
    18. 

  18. $UTF8_VALID = '^('.
    19. 

  19.     '[\x00-\x7F]'.                          # ASCII (including control chars)
    20. 

  20.     '|[\xC2-\xDF][\x80-\xBF]'.              # non-overlong 2-byte
    21. 

  21.     '|\xE0[\xA0-\xBF][\x80-\xBF]'.          # excluding overlongs
    22. 

  22.     '|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}'.   # straight 3-byte
    23. 

  23.     '|\xED[\x80-\x9F][\x80-\xBF]'.          # excluding surrogates
    24. 

  24.     '|\xF0[\x90-\xBF][\x80-\xBF]{2}'.       # planes 1-3
    25. 

  25.     '|[\xF1-\xF3][\x80-\xBF]{3}'.           # planes 4-15
    26. 

  26.     '|\xF4[\x80-\x8F][\x80-\xBF]{2}'.       # plane 16
    27. 

  27.     ')*$';
    28. 

  28. 

  29. //--------------------------------------------------------------------
    30. 

  30. /**
    31. 

  31. * PCRE Pattern to match single UTF-8 characters
    32. 

  32. * Comes from W3 FAQ: Multilingual Forms
    33. 

  33. * Note: modified to include full ASCII range including control chars
    34. 

  34. * @see http://www.w3.org/International/questions/qa-forms-utf-8
    35. 

  35. * @package utf8
    36. 

  36. */
    37. 

  37. $UTF8_MATCH =
    38. 

  38.     '([\x00-\x7F])'.                          # ASCII (including control chars)
    39. 

  39.     '|([\xC2-\xDF][\x80-\xBF])'.              # non-overlong 2-byte
    40. 

  40.     '|(\xE0[\xA0-\xBF][\x80-\xBF])'.          # excluding overlongs
    41. 

  41.     '|([\xE1-\xEC\xEE\xEF][\x80-\xBF]{2})'.   # straight 3-byte
    42. 

  42.     '|(\xED[\x80-\x9F][\x80-\xBF])'.          # excluding surrogates
    43. 

  43.     '|(\xF0[\x90-\xBF][\x80-\xBF]{2})'.       # planes 1-3
    44. 

  44.     '|([\xF1-\xF3][\x80-\xBF]{3})'.           # planes 4-15
    45. 

  45.     '|(\xF4[\x80-\x8F][\x80-\xBF]{2})';       # plane 16
    46. 

  46. 

  47. //--------------------------------------------------------------------
    48. 

  48. /**
    49. 

  49. * PCRE Pattern to locate bad bytes in a UTF-8 string
    50. 

  50. * Comes from W3 FAQ: Multilingual Forms
    51. 

  51. * Note: modified to include full ASCII range including control chars
    52. 

  52. * @see http://www.w3.org/International/questions/qa-forms-utf-8
    53. 

  53. * @package utf8
    54. 

  54. */
    55. 

  55. $UTF8_BAD =
    56. 

  56.     '([\x00-\x7F]'.                          # ASCII (including control chars)
    57. 

  57.     '|[\xC2-\xDF][\x80-\xBF]'.               # non-overlong 2-byte
    58. 

  58.     '|\xE0[\xA0-\xBF][\x80-\xBF]'.           # excluding overlongs
    59. 

  59.     '|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}'.    # straight 3-byte
    60. 

  60.     '|\xED[\x80-\x9F][\x80-\xBF]'.           # excluding surrogates
    61. 

  61.     '|\xF0[\x90-\xBF][\x80-\xBF]{2}'.        # planes 1-3
    62. 

  62.     '|[\xF1-\xF3][\x80-\xBF]{3}'.            # planes 4-15
    63. 

  63.     '|\xF4[\x80-\x8F][\x80-\xBF]{2}'.        # plane 16
    64. 

  64.     '|(.{1}))';                              # invalid byte
    65.