kernel/include/ctype.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 #ifndef __TL_CTYPE_H
  22 #define __TL_CTYPE_H
  23
  24 extern char _ctype[];
  25
  26 #define CT_UP   0x01    /* upper case */
  27 #define CT_LOW  0x02    /* lower case */
  28 #define CT_DIG  0x04    /* digit */
  29 #define CT_CTL  0x08    /* control */
  30 #define CT_PUN  0x10    /* punctuation */
  31 #define CT_WHT  0x20    /* white space (space/cr/lf/tab) */
  32 #define CT_HEX  0x40    /* hex digit */
  33 #define CT_SP   0x80    /* hard space (0x20) */
  34
  35 /* without the cast to unsigned, DJGPP complains (using -Wall) */
  36 #define isalnum(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_UP | CT_LOW | CT_DIG))
  37 #define isalpha(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_UP | CT_LOW))
  38 #define iscntrl(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_CTL))
  39 #define isdigit(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_DIG))
  40 #define isgraph(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_PUN | CT_UP | CT_LOW | CT_DIG))
  41 #define islower(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_LOW))
  42 #define isprint(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_PUN | CT_UP | CT_LOW | CT_DIG | CT_SP))
  43 #define ispunct(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_PUN))
  44 #define isspace(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_WHT))
  45 #define isupper(c)      ((_ctype + 1)[(unsigned)(c)] & (CT_UP))
  46 #define isxdigit(c)     ((_ctype + 1)[(unsigned)(c)] & (CT_DIG | CT_HEX))
  47 #define isascii(c)      ((unsigned)(c) <= 0x7F)
  48 #define toascii(c)      ((unsigned)(c) & 0x7F)
  49
  50 #define tolower(c)      (isupper(c) ? c + 'a' - 'A' : c)
  51 #define toupper(c)      (islower(c) ? c + 'A' - 'a' : c)
  52
  53 #endif