blob: 91ceb32ff738407ff0bcaf9f1bdd725ede354b7f [file] [log] [blame]
Amit Daniel Kachhape6a01f52011-07-20 11:45:59 +05301/****************************************************************************
2 * Copyright (c) 2003-2005,2008 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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26 * authorization. *
27 ****************************************************************************/
28
29/*
30** Support functions for wide/narrow conversion.
31*/
32
33#include <curses.priv.h>
34
35MODULE_ID("$Id: charable.c,v 1.5 2008/07/05 20:51:41 tom Exp $")
36
37NCURSES_EXPORT(bool) _nc_is_charable(wchar_t ch)
38{
39 bool result;
40#if HAVE_WCTOB
41 result = (wctob((wint_t) ch) == (int) ch);
42#else
43 result = (_nc_to_char(ch) >= 0);
44#endif
45 return result;
46}
47
48NCURSES_EXPORT(int) _nc_to_char(wint_t ch)
49{
50 int result;
51#if HAVE_WCTOB
52 result = wctob(ch);
53#elif HAVE_WCTOMB
54 char temp[MB_LEN_MAX];
55 result = wctomb(temp, ch);
56 if (strlen(temp) == 1)
57 result = UChar(temp[0]);
58 else
59 result = -1;
60#endif
61 return result;
62}
63
64NCURSES_EXPORT(wint_t) _nc_to_widechar(int ch)
65{
66 wint_t result;
67#if HAVE_BTOWC
68 result = btowc(ch);
69#elif HAVE_MBTOWC
70 wchar_t convert;
71 char temp[2];
72 temp[0] = ch;
73 temp[1] = '\0';
74 if (mbtowc(&convert, temp, 1) >= 0)
75 result = convert;
76 else
77 result = WEOF;
78#endif
79 return result;
80}