newlib/libc/ctype/iswalpha_l.c

   1 /* Modified (m) 2017 Thomas Wolff: revise Unicode and locale/wchar handling */
   2 #include <_ansi.h>
   3 #include <ctype.h>
   4 #include <wctype.h>
   5 #include "local.h"
   6 #include "categories.h"
   7
   8 int
   9 iswalpha_l (wint_t c, struct __locale_t *locale)
  10 {
  11 #ifdef _MB_CAPABLE
  12   c = _jp2uc_l (c, locale);
  13   enum category cat = category (c);
  14   return cat == CAT_LC || cat == CAT_Lu || cat == CAT_Ll || cat == CAT_Lt
  15       || cat == CAT_Lm || cat == CAT_Lo
  16       || cat == CAT_Nl // Letter_Number
  17       ;
  18 #else
  19   return c < (wint_t)0x100 ? isalpha (c) : 0;
  20 #endif /* _MB_CAPABLE */
  21 }