1// -*- C++ -*-
2/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
3     Written by James Clark (jjc@jclark.com)
4
5This file is part of groff.
6
7groff is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12groff is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License along
18with groff; see the file COPYING.  If not, write to the Free Software
19Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21#include <ctype.h>
22#include "cmap.h"
23
24cmap cmlower(CMAP_BUILTIN);
25cmap cmupper(CMAP_BUILTIN);
26
27#ifdef isascii
28#define ISASCII(c) isascii(c)
29#else
30#define ISASCII(c) (1)
31#endif
32
33cmap::cmap()
34{
35  unsigned char *p = v;
36  for (int i = 0; i <= UCHAR_MAX; i++)
37    p[i] = i;
38}
39
40cmap::cmap(cmap_builtin)
41{
42  // these are initialised by cmap_init::cmap_init()
43}
44
45int cmap_init::initialised = 0;
46
47cmap_init::cmap_init()
48{
49  if (initialised)
50    return;
51  initialised = 1;
52  for (int i = 0; i <= UCHAR_MAX; i++) {
53    cmupper.v[i] = ISASCII(i) && islower(i) ? toupper(i) : i;
54    cmlower.v[i] = ISASCII(i) && isupper(i) ? tolower(i) : i;
55  }
56}
57