1 /****************************************************************************
2 * Copyright (c) 2002 Free Software Foundation, Inc. *
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5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Thomas E. Dickey 2002 *
31 ****************************************************************************/
36 ** The routine get_wch().
40 #include <curses.priv.h>
42 MODULE_ID("$Id: lib_get_wch.c,v 1.3 2002/03/17 16:14:45 tom Exp $")
45 wget_wch(WINDOW *win, wint_t * result)
48 char buffer[(MB_CUR_MAX * 9) + 1]; /* allow some redundant shifts */
55 T((T_CALLED("wget_wch(%p)"), win));
57 * We can get a stream of single-byte characters and KEY_xxx codes from
58 * _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
61 T(("reading %d of %d", count + 1, sizeof(buffer)));
62 code = _nc_wgetch(win, &value, TRUE);
65 } else if (code == KEY_CODE_YES) {
67 * If we were processing an incomplete multibyte character, return
68 * an error since we have a KEY_xxx code which interrupts it. For
69 * some cases, we could improve this by writing a new version of
70 * lib_getch.c(!), but it is not clear whether the improvement
71 * would be worth the effort.
78 } else if (count + 1 >= sizeof(buffer)) {
83 buffer[count++] = UChar(value);
84 memset(&state, 0, sizeof(state));
85 status = mbrlen(buffer, count, &state);
87 memset(&state, 0, sizeof(state));
88 if ((int) mbrtowc(&wch, buffer, count, &state) != status) {
89 code = ERR; /* the two calls should match */
97 T(("result %#o", value));