src/lib-roff/cmap.cpp

   1 /*@
   2  * Copyright (c) 2014 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   3  *
   4  * Copyright (C) 1989 - 1992 Free Software Foundation, Inc.
   5  *      Written by James Clark (jjc@jclark.com)
   6  *
   7  * This is free software; you can redistribute it and/or modify it under
   8  * the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2, or (at your option) any later
  10  * version.
  11  *
  12  * This is distributed in the hope that it will be useful, but WITHOUT ANY
  13  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with groff; see the file COPYING.  If not, write to the Free Software
  19  * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #include "config.h"
  23
  24 #include <ctype.h>
  25 #include "cmap.h"
  26
  27 cmap cmlower(CMAP_BUILTIN);
  28 cmap cmupper(CMAP_BUILTIN);
  29
  30 #ifdef isascii /* FIXME lib.h? */
  31 #define ISASCII(c) isascii(c)
  32 #else
  33 #define ISASCII(c) (1)
  34 #endif
  35
  36 cmap::cmap()
  37 {
  38   unsigned char *p = v;
  39   for (int i = 0; i <= UCHAR_MAX; i++)
  40     p[i] = i;
  41 }
  42
  43 cmap::cmap(cmap_builtin)
  44 {
  45   // these are initialised by cmap_init::cmap_init()
  46 }
  47
  48 int cmap_init::initialised = 0;
  49
  50 cmap_init::cmap_init()
  51 {
  52   if (initialised)
  53     return;
  54   initialised = 1;
  55   for (int i = 0; i <= UCHAR_MAX; i++) {
  56     cmupper.v[i] = ISASCII(i) && islower(i) ? toupper(i) : i;
  57     cmlower.v[i] = ISASCII(i) && isupper(i) ? tolower(i) : i;
  58   }
  59 }
  60
  61 // s-it2-mode