newlib/libc/ctype/iswctype.c

   1 /*
   2 FUNCTION
   3         <<iswctype>>, <<iswctype_l>>---extensible wide-character test
   4
   5 INDEX
   6         iswctype
   7
   8 INDEX
   9         iswctype_l
  10
  11 SYNOPSIS
  12         #include <wctype.h>
  13         int iswctype(wint_t <[c]>, wctype_t <[desc]>);
  14
  15         #include <wctype.h>
  16         int iswctype_l(wint_t <[c]>, wctype_t <[desc]>, locale_t <[locale]>);
  17
  18 DESCRIPTION
  19 <<iswctype>> is a function which classifies wide-character values using the
  20 wide-character test specified by <[desc]>.
  21
  22 <<iswctype_l>> is like <<iswctype>> but performs the check based on the
  23 locale specified by the locale object locale.  If <[locale]> is
  24 LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
  25
  26 RETURNS
  27 <<iswctype>>, <<iswctype_l>> return non-zero if and only if <[c]> matches
  28 the test specified by <[desc]>.  If <[desc]> is unknown, zero is returned.
  29
  30 PORTABILITY
  31 <<iswctype>> is C99.
  32 <<iswctype_l>> is POSIX-1.2008.
  33
  34 No supporting OS subroutines are required.
  35 */
  36 #include <_ansi.h>
  37 #include <wctype.h>
  38 #include "local.h"
  39
  40 int
  41 iswctype (wint_t c, wctype_t desc)
  42 {
  43   switch (desc)
  44     {
  45     case WC_ALNUM:
  46       return iswalnum (c);
  47     case WC_ALPHA:
  48       return iswalpha (c);
  49     case WC_BLANK:
  50       return iswblank (c);
  51     case WC_CNTRL:
  52       return iswcntrl (c);
  53     case WC_DIGIT:
  54       return iswdigit (c);
  55     case WC_GRAPH:
  56       return iswgraph (c);
  57     case WC_LOWER:
  58       return iswlower (c);
  59     case WC_PRINT:
  60       return iswprint (c);
  61     case WC_PUNCT:
  62       return iswpunct (c);
  63     case WC_SPACE:
  64       return iswspace (c);
  65     case WC_UPPER:
  66       return iswupper (c);
  67     case WC_XDIGIT:
  68       return iswxdigit (c);
  69     default:
  70       return 0; /* eliminate warning */
  71     }
  72
  73   /* otherwise unknown */
  74   return 0;
  75 }