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  1. /* Copyright (c) 2002 Red Hat Incorporated.
  2.    All rights reserved.
  3.  
  4.    Redistribution and use in source and binary forms, with or without
  5.    modification, are permitted provided that the following conditions are met:
  6.  
  7.      Redistributions of source code must retain the above copyright
  8.      notice, this list of conditions and the following disclaimer.
  9.  
  10.      Redistributions in binary form must reproduce the above copyright
  11.      notice, this list of conditions and the following disclaimer in the
  12.      documentation and/or other materials provided with the distribution.
  13.  
  14.      The name of Red Hat Incorporated may not be used to endorse
  15.      or promote products derived from this software without specific
  16.      prior written permission.
  17.  
  18.    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19.    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20.    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21.    ARE DISCLAIMED.  IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
  22.    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23.    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24.    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25.    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS  
  27.    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28. */
  29.  
  30. /*
  31. FUNCTION
  32.         <<iswcntrl>>---control wide character test
  33.  
  34. INDEX
  35.         iswcntrl
  36.  
  37. ANSI_SYNOPSIS
  38.         #include <wctype.h>
  39.         int iswcntrl(wint_t <[c]>);
  40.  
  41. TRAD_SYNOPSIS
  42.         #include <wctype.h>
  43.         int iswcntrl(<[c]>)
  44.         wint_t <[c]>;
  45.  
  46. DESCRIPTION
  47. <<iswcntrl>> is a function which classifies wide-character values that
  48. are categorized as control characters.
  49.  
  50. RETURNS
  51. <<iswcntrl>> returns non-zero if <[c]> is a control wide character.
  52.  
  53. PORTABILITY
  54. <<iswcntrl>> is C99.
  55.  
  56. No supporting OS subroutines are required.
  57. */
  58. #include <_ansi.h>
  59. #include <newlib.h>
  60. #include <wctype.h>
  61. #include <ctype.h>
  62. #include <string.h>
  63. #include "local.h"
  64.  
  65. int
  66. _DEFUN(iswcntrl,(c), wint_t c)
  67. {
  68. #ifdef _MB_CAPABLE
  69.   c = _jp2uc (c);
  70.  
  71.   /* Based on Unicode 5.2.  All characters from general category "Cc", "Zl",
  72.      and "Zp".  */
  73.   return ((c >= 0x0000 && c <= 0x001f) ||
  74.           (c >= 0x007f && c <= 0x009f) ||
  75.           c == 0x2028 || c == 0x2029);
  76. #else
  77.   return (c < 0x100 ? iscntrl (c) : 0);
  78. #endif /* _MB_CAPABLE */
  79. }
  80.  
  81.