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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.         <<wctype>>---get wide-character classification type
  33.  
  34. INDEX
  35.         wctype
  36.  
  37. ANSI_SYNOPSIS
  38.         #include <wctype.h>
  39.         wctype_t wctype(const char *<[c]>);
  40.  
  41. TRAD_SYNOPSIS
  42.         #include <wctype.h>
  43.         wctype_t wctype(<[c]>)
  44.         const char * <[c]>;
  45.  
  46.  
  47. DESCRIPTION
  48. <<wctype>> is a function which takes a string <[c]> and gives back
  49. the appropriate wctype_t type value associated with the string,
  50. if one exists.  The following values are guaranteed to be recognized:
  51. "alnum", "alpha", "blank", "cntrl", "digit", "graph", "lower", "print",
  52. "punct", "space", "upper", and "xdigit".
  53.  
  54. RETURNS
  55. <<wctype>> returns 0 and sets <<errno>> to <<EINVAL>> if the
  56. given name is invalid.  Otherwise, it returns a valid non-zero wctype_t
  57. value.
  58.  
  59. PORTABILITY
  60. <<wctype>> is C99.
  61.  
  62. No supporting OS subroutines are required.
  63. */
  64.  
  65. #include <_ansi.h>
  66. #include <string.h>
  67. #include <reent.h>
  68. #include <wctype.h>
  69. #include <errno.h>
  70. #include "local.h"
  71.  
  72. wctype_t
  73. _DEFUN (_wctype_r, (r, c),
  74.         struct _reent *r _AND
  75.         const char *c)
  76. {
  77.   switch (*c)
  78.     {
  79.     case 'a':
  80.       if (!strcmp (c, "alnum"))
  81.         return WC_ALNUM;
  82.       else if (!strcmp (c, "alpha"))
  83.         return WC_ALPHA;
  84.       break;
  85.     case 'b':
  86.       if (!strcmp (c, "blank"))
  87.         return WC_BLANK;
  88.       break;
  89.     case 'c':
  90.       if (!strcmp (c, "cntrl"))
  91.         return WC_CNTRL;
  92.       break;
  93.     case 'd':
  94.       if (!strcmp (c, "digit"))
  95.         return WC_DIGIT;
  96.       break;
  97.     case 'g':
  98.       if (!strcmp (c, "graph"))
  99.         return WC_GRAPH;
  100.       break;
  101.     case 'l':
  102.       if (!strcmp (c, "lower"))
  103.         return WC_LOWER;
  104.       break;
  105.     case 'p':
  106.       if (!strcmp (c, "print"))
  107.         return WC_PRINT;
  108.       else if (!strcmp (c, "punct"))
  109.         return WC_PUNCT;
  110.       break;
  111.     case 's':
  112.       if (!strcmp (c, "space"))
  113.         return WC_SPACE;
  114.       break;
  115.     case 'u':
  116.       if (!strcmp (c, "upper"))
  117.         return WC_UPPER;
  118.       break;
  119.     case 'x':
  120.       if (!strcmp (c, "xdigit"))
  121.         return WC_XDIGIT;
  122.       break;
  123.     }
  124.  
  125.   /* otherwise invalid */
  126.   r->_errno = EINVAL;
  127.   return 0;
  128. }
  129.  
  130. #ifndef _REENT_ONLY
  131. wctype_t
  132. _DEFUN (wctype, (c),
  133.         const char *c)
  134. {
  135.   return _wctype_r (_REENT, c);
  136. }
  137. #endif /* !_REENT_ONLY */
  138.