groff: update vendor branch to v1.20.1
[dragonfly.git] / contrib / groff / src / libs / libgroff / cmap.cpp
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92d0a6a6 1// -*- C++ -*-
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2/* Copyright (C) 1989, 1990, 1991, 1992, 2009
3 Free Software Foundation, Inc.
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4 Written by James Clark (jjc@jclark.com)
5
6This file is part of groff.
7
8groff is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
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10Software Foundation, either version 3 of the License, or
11(at your option) any later version.
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12
13groff is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16for more details.
17
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18You should have received a copy of the GNU General Public License
19along with this program. If not, see <http://www.gnu.org/licenses/>. */
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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}